{"id":2585,"date":"2025-10-01T09:08:56","date_gmt":"2025-10-01T09:08:56","guid":{"rendered":"https:\/\/productionscrews.com\/"},"modified":"2025-10-01T09:08:56","modified_gmt":"2025-10-01T09:08:56","slug":"salt-spray-test-guide-expert-tips-for-corrosion-testing-success","status":"publish","type":"post","link":"https:\/\/productionscrews.com\/vi\/salt-spray-test-guide-expert-tips-for-corrosion-testing-success\/","title":{"rendered":"H\u01b0\u1edbng D\u1eabn Ki\u1ec3m Tra Phun Mu\u1ed1i: M\u1eb9o Chuy\u00ean Gia \u0111\u1ec3 Th\u00e0nh C\u00f4ng Trong Ki\u1ec3m Tra \u0102n M\u00f2n"},"content":{"rendered":"<h2>Ki\u1ec3m Tra Phun Mu\u1ed1i: H\u01b0\u1edbng D\u1eabn To\u00e0n Di\u1ec7n V\u1ec1 C\u00e1ch Ho\u1ea1t \u0110\u1ed9ng V\u00e0 \u00dd Ngh\u0129a C\u1ee7a N\u00f3<\/h2>\n<h2>Gi\u1edbi Thi\u1ec7u: H\u01a1n C\u1ea3 M\u1ed9t B\u00e0i Ki\u1ec3m Tra \u0110\u01a1n Gi\u1ea3n<\/h2>\n<p>Ki\u1ec3m tra phun mu\u1ed1i l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n \u0111\u1ec3 t\u0103ng t\u1ed1c ki\u1ec3m tra \u0103n m\u00f2n \u0111\u00e3 gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng trong g\u1ea7n 100 n\u0103m. Nhi\u1ec7m v\u1ee5 ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 ki\u1ec3m tra kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 l\u1edbp ph\u1ee7 b\u1ec1 m\u1eb7t trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. Trong khi nhi\u1ec1u ng\u01b0\u1eddi s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, n\u00f3 c\u0169ng b\u1ecb hi\u1ec3u l\u1ea7m r\u1ed9ng r\u00e3i. \u0110\u1ec3 th\u1ef1c s\u1ef1 t\u1eadn d\u1ee5ng s\u1ee9c m\u1ea1nh c\u1ee7a n\u00f3, b\u1ea1n c\u1ea7n \u0111i xa h\u01a1n nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u00e0 hi\u1ec3u r\u00f5 c\u00e1c chi ti\u1ebft k\u1ef9 thu\u1eadt ki\u1ec3m so\u00e1t c\u00e1ch n\u00f3 ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u00fd ngh\u0129a c\u1ee7a k\u1ebft qu\u1ea3. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p l\u1eddi gi\u1ea3i th\u00edch \u0111\u1ea7y \u0111\u1ee7 \u0111\u00f3.<\/p>\n<h3>Hi\u1ec3u Bi\u1ebft C\u01a1 B\u1ea3n<\/h3>\n<p>V\u1ec1 b\u1ea3n ch\u1ea5t, ki\u1ec3m tra phun mu\u1ed1i (c\u00f2n g\u1ecdi l\u00e0 ki\u1ec3m tra s\u01b0\u01a1ng mu\u1ed1i) t\u1ea1o ra m\u1ed9t kh\u00f4ng kh\u00ed \u0103n m\u00f2n, ch\u1ee9a mu\u1ed1i trong m\u1ed9t bu\u1ed3ng k\u00edn. C\u00e1c m\u1eabu th\u1eed \u0111\u01b0\u1ee3c ph\u01a1i nhi\u1ec5m trong m\u00f4i tr\u01b0\u1eddng n\u00e0y trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh, sau \u0111\u00f3 ki\u1ec3m tra d\u1ea5u hi\u1ec7u c\u1ee7a \u0103n m\u00f2n. M\u1ee5c \u0111\u00edch ch\u00ednh kh\u00f4ng ph\u1ea3i d\u1ef1 \u0111o\u00e1n th\u1eddi gian v\u1eadt li\u1ec7u s\u1ebd t\u1ed3n t\u1ea1i trong th\u1ef1c t\u1ebf, m\u00e0 l\u00e0 cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p nhanh ch\u00f3ng v\u00e0 l\u1eb7p l\u1ea1i \u0111\u1ec3 so s\u00e1nh ch\u1ea5t l\u01b0\u1ee3ng gi\u1eefa c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau. N\u00f3 cho ph\u00e9p c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ki\u1ec3m tra t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a quy tr\u00ecnh ph\u1ee7 v\u00e0 so s\u00e1nh hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u ho\u1eb7c l\u1edbp ho\u00e0n thi\u1ec7n kh\u00e1c nhau d\u01b0\u1edbi c\u00f9ng \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t.<\/p>\n<h3>T\u1ea1i Sao Vi\u1ec7c Hi\u1ec3u Chi Ti\u1ebft Quan Tr\u1ecdng<\/h3>\n<p>M\u1ed9t sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 nghi\u00eam tr\u1ecdng l\u00e0 c\u1ed1 g\u1eafng li\u00ean k\u1ebft tr\u1ef1c ti\u1ebfp s\u1ed1 gi\u1edd trong bu\u1ed3ng phun mu\u1ed1i v\u1edbi s\u1ed1 n\u0103m trong th\u1ef1c t\u1ebf. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1ec1 m\u1eb7t khoa h\u1ecdc. Bu\u1ed3ng ki\u1ec3m tra \u0111\u1ea1i di\u1ec7n cho m\u1ed9t \u0111i\u1ec1u ki\u1ec7n duy nh\u1ea5t, kh\u00f4ng \u0111\u1ed5i v\u00e0 r\u1ea5t nh\u00e2n t\u1ea1o. \u0110\u1ec3 th\u1ef1c s\u1ef1 hi\u1ec3u ki\u1ec3m tra phun mu\u1ed1i, b\u1ea1n c\u1ea7n ph\u00e2n t\u00edch \u201cc\u00e1ch\u201d v\u00e0 \u201cl\u00fd do\u201d \u0111\u1eb1ng sau c\u00e1ch n\u00f3 ho\u1ea1t \u0111\u1ed9ng, ch\u1ee9 kh\u00f4ng ch\u1ec9 l\u00e0 \u201cc\u00e1i g\u00ec\u201d c\u1ee7a c\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n. Ki\u1ebfn th\u1ee9c n\u00e0y gi\u00fap c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 khoa h\u1ecdc di\u1ec5n gi\u1ea3i k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh th\u00f4ng minh.<\/p>\n<p><a href=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-nkxSoZRA59g.jpg\" target=\"_blank\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-nkxSoZRA59g.jpg\" height=\"1200\" width=\"960\" class=\"alignnone size-full wp-image-2588\" alt=\"C\u1eadn c\u1ea3nh bu\u1ed3ng th\u1eed phun mu\u1ed1i ph\u00e1t ra s\u01b0\u01a1ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a \u1ed1c v\u00edt v\u00e0 bu l\u00f4ng c\u00f4ng nghi\u1ec7p.\" srcset=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-nkxSoZRA59g.jpg 960w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-nkxSoZRA59g-240x300.jpg 240w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-nkxSoZRA59g-768x960.jpg 768w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-nkxSoZRA59g-10x12.jpg 10w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/> <\/a><\/p>\n<h3>B\u1ea1n S\u1ebd H\u1ecdc \u0110\u01b0\u1ee3c G\u00ec: T\u1ed5ng Quan B\u00e0i Vi\u1ebft<\/h3>\n<p>H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y s\u1ebd cung c\u1ea5p cho b\u1ea1n hi\u1ec3u bi\u1ebft k\u1ef9 thu\u1eadt v\u1eefng ch\u1eafc v\u1ec1 ki\u1ec3m tra phun mu\u1ed1i. Ch\u00fang t\u00f4i s\u1ebd kh\u00e1m ph\u00e1:<\/p>\n<ul>\n<li>C\u00e1c <a href=\"https:\/\/productionscrews.com\/vi\/the-science-behind-metal-cutting-from-basic-principles-to-expert-mastery\/\"  data-wpil-monitor-id=\"516\" target=\"_blank\">nguy\u00ean l\u00fd \u0111i\u1ec7n h\u00f3a c\u01a1 b\u1ea3n<\/a> v\u1ec1 \u0103n m\u00f2n m\u00e0 ki\u1ec3m tra n\u00e0y t\u0103ng t\u1ed1c.<\/li>\n<li>Ph\u00e2n t\u00edch c\u00e1c thi\u1ebft l\u1eadp ki\u1ec3m tra quan tr\u1ecdng v\u00e0 \u1ea3nh h\u01b0\u1edfng ch\u00ednh c\u1ee7a ch\u00fang \u0111\u1ebfn k\u1ebft qu\u1ea3.<\/li>\n<li>C\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc \u0111\u1eb7c tr\u01b0ng g\u00e2y ra s\u1ef1 c\u1ed1 t\u0103ng t\u1ed1c trong bu\u1ed3ng ki\u1ec3m tra.<\/li>\n<li>So s\u00e1nh c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf ch\u00ednh nh\u01b0 ASTM B117 v\u00e0 ISO 9227.<\/li>\n<li>H\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf \u0111\u1ec3 hi\u1ec3u ch\u00ednh x\u00e1c k\u1ebft qu\u1ea3 v\u00e0 nh\u1eadn bi\u1ebft gi\u1edbi h\u1ea1n t\u00edch h\u1ee3p c\u1ee7a ki\u1ec3m tra.<\/li>\n<\/ul>\n<h2>\u0110\u1ed9ng C\u01a1 \u0110i\u1ec7n H\u00f3a<\/h2>\n<p>\u0110\u1ec3 hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ki\u1ec3m tra phun mu\u1ed1i, tr\u01b0\u1edbc ti\u00ean ch\u00fang ta ph\u1ea3i hi\u1ec3u \u0103n m\u00f2n th\u1ef1c s\u1ef1 l\u00e0 g\u00ec. \u0110\u00f3 kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 \u201cg\u1ec9 s\u00e9t\u201d; \u0111\u00f3 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh \u0111i\u1ec7n h\u00f3a. C\u00e1c nguy\u00ean l\u00fd gi\u1ed1ng nhau gi\u00fap m\u1ed9t pin th\u00f4ng th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng c\u0169ng ch\u00ednh l\u00e0 nguy\u00ean nh\u00e2n khi\u1ebfn m\u1ed9t m\u1ea3nh th\u00e9p ph\u1ee7 b\u1ecb h\u1ecfng.<\/p>\n<h3>\u0102n M\u00f2n Nh\u01b0 M\u1ed9t Pin<\/h3>\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t vi\u00ean pin nh\u1ecf tr\u00ean b\u1ec1 m\u1eb7t kim lo\u1ea1i. \u0110\u1ec3 x\u1ea3y ra \u0103n m\u00f2n, b\u1ed1n ph\u1ea7n ph\u1ea3i c\u00f3 m\u1eb7t, t\u1ea1o th\u00e0nh m\u1ed9t t\u1ebf b\u00e0o \u0103n m\u00f2n:<\/p>\n<ol>\n<li>Anode: \u0110\u00e2y l\u00e0 n\u01a1i kim lo\u1ea1i b\u1ecb oxy h\u00f3a, ngh\u0129a l\u00e0 m\u1ea5t electron v\u00e0 h\u00f2a tan v\u00e0o m\u00f4i tr\u01b0\u1eddng d\u01b0\u1edbi d\u1ea1ng c\u00e1c h\u1ea1t kim lo\u1ea1i. \u0110\u00e2y l\u00e0 n\u01a1i x\u1ea3y ra m\u1ea5t m\u00e1t kim lo\u1ea1i.<\/li>\n<li>An\u1ed1t: \u0110\u00e2y l\u00e0 n\u01a1i x\u1ea3y ra ph\u1ea3n \u1ee9ng kh\u1eed. Ph\u1ea3n \u1ee9ng n\u00e0y s\u1eed d\u1ee5ng c\u00e1c electron \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1ea1i c\u1ef1c \u00e2m. Trong m\u00f4i tr\u01b0\u1eddng trung t\u00ednh, gi\u00e0u oxy nh\u01b0 bu\u1ed3ng phun mu\u1ed1i, ph\u1ea3n \u1ee9ng ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a c\u1ef1c \u00e2m l\u00e0 kh\u1eed oxy.<\/li>\n<li>Con \u0111\u01b0\u1eddng kim lo\u1ea1i: Kim lo\u1ea1i t\u1ef1 n\u00f3 cung c\u1ea5p m\u1ed9t con \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n cho c\u00e1c electron di chuy\u1ec3n t\u1eeb c\u1ef1c \u00e2m \u0111\u1ebfn c\u1ef1c d\u01b0\u01a1ng.<\/li>\n<li>Dung d\u1ecbch \u0111i\u1ec7n ly: \u0110\u00e2y l\u00e0 dung d\u1ecbch d\u1eabn \u0111i\u1ec7n cho ph\u00e9p c\u00e1c h\u1ea1t di chuy\u1ec3n gi\u1eefa c\u1ef1c \u00e2m v\u00e0 c\u1ef1c d\u01b0\u01a1ng, ho\u00e0n th\u00e0nh m\u1ea1ch \u0111i\u1ec7n. Trong th\u1eed nghi\u1ec7m phun mu\u1ed1i, dung d\u1ecbch \u0111i\u1ec7n ly l\u00e0 s\u01b0\u01a1ng mu\u1ed1i n\u01b0\u1edbc mu\u1ed1i.<\/li>\n<\/ol>\n<p>Khi c\u1ea3 b\u1ed1n ph\u1ea7n n\u00e0y c\u00f3 m\u1eb7t, \u0111\u1ed9ng c\u01a1 \u0103n m\u00f2n b\u1eaft \u0111\u1ea7u ho\u1ea1t \u0111\u1ed9ng, v\u00e0 kim lo\u1ea1i t\u1ea1i c\u1ef1c \u00e2m b\u1eaft \u0111\u1ea7u ph\u00e2n h\u1ee7y.<\/p>\n<h3>\u00d4xy h\u00f3a v\u00e0 kh\u1eed<\/h3>\n<p>Trung t\u00e2m c\u1ee7a qu\u00e1 tr\u00ecnh \u0103n m\u00f2n li\u00ean quan \u0111\u1ebfn hai ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc x\u1ea3y ra c\u00f9ng l\u00fac.<\/p>\n<p>T\u1ea1i c\u1ef1c \u00e2m, kim lo\u1ea1i nh\u01b0\u1eddng electron trong ph\u1ea3n \u1ee9ng oxi h\u00f3a. \u0110\u1ed1i v\u1edbi s\u1eaft, qu\u00e1 tr\u00ecnh l\u00e0:<\/p>\n<p>Fe \u2192 Fe\u00b2\u207a + 2e\u207b (Kim lo\u1ea1i s\u1eaft tr\u1edf th\u00e0nh c\u00e1c h\u1ea1t s\u1eaft, gi\u1ea3i ph\u00f3ng hai electron)<\/p>\n<p>T\u1ea1i c\u1ef1c d\u01b0\u01a1ng, c\u00e1c electron n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ph\u1ea3n \u1ee9ng kh\u1eed. Trong m\u00f4i tr\u01b0\u1eddng s\u01b0\u01a1ng mu\u1ed1i trung t\u00ednh, th\u01b0\u1eddng l\u00e0:<\/p>\n<p>O\u2082 + 2H\u2082O + 4e\u207b \u2192 4OH\u207b (Oxy v\u00e0 n\u01b0\u1edbc ph\u1ea3n \u1ee9ng v\u1edbi electron \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c h\u1ea1t hydroxide)<\/p>\n<p>C\u00e1c h\u1ea1t s\u1eaft (Fe\u00b2\u207a) sau \u0111\u00f3 c\u00f3 th\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c h\u1ea1t hydroxide (OH\u207b) v\u00e0 nhi\u1ec1u oxy h\u01a1n \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c oxit s\u1eaft v\u00e0 hydroxide kh\u00e1c nhau, m\u00e0 ch\u00fang ta g\u1ecdi l\u00e0 g\u1ec9 s\u00e9t.<\/p>\n<h3>C\u00e1ch l\u1edbp ph\u1ee7 gi\u00fap \u00edch<\/h3>\n<p>C\u00e1c l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh \u0111i\u1ec7n h\u00f3a n\u00e0y b\u1eb1ng c\u00e1ch lo\u1ea1i b\u1ecf m\u1ed9t trong b\u1ed1n ph\u1ea7n thi\u1ebft y\u1ebfu c\u1ee7a t\u1ebf b\u00e0o \u0103n m\u00f2n. Ch\u00fang ch\u1ee7 y\u1ebfu ho\u1ea1t \u0111\u1ed9ng theo hai c\u00e1ch:<\/p>\n<ol>\n<li>B\u1ea3o v\u1ec7 h\u00e0ng r\u00e0o: \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u1ea5t. S\u01a1n, b\u1ed9t v\u00e0 m\u1ed9t s\u1ed1 l\u1edbp ph\u1ee7 nh\u1ef1a ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t h\u00e0ng r\u00e0o v\u1eadt l\u00fd, ng\u0103n c\u00e1ch kim lo\u1ea1i n\u1ec1n kh\u1ecfi dung d\u1ecbch \u0111i\u1ec7n ly (s\u01b0\u01a1ng mu\u1ed1i). M\u1ed9t l\u1edbp ph\u1ee7 kh\u00f4ng x\u1ed1p ho\u00e0n h\u1ea3o v\u1ec1 l\u00fd thuy\u1ebft s\u1ebd cung c\u1ea5p s\u1ef1 b\u1ea3o v\u1ec7 v\u00f4 t\u1eadn. Tuy nhi\u00ean, t\u1ea5t c\u1ea3 c\u00e1c l\u1edbp ph\u1ee7 \u0111\u1ec1u c\u00f3 m\u1ed9t s\u1ed1 l\u1ed7 nh\u1ecf ho\u1eb7c c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng, t\u1ea1o \u0111\u01b0\u1eddng d\u1eabn cho dung d\u1ecbch \u0111i\u1ec7n ly ti\u1ebfp x\u00fac v\u1edbi kim lo\u1ea1i.<\/li>\n<li>B\u1ea3o v\u1ec7 \u0111i\u1ec7n h\u00f3a ho\u1eb7c b\u1ea3o v\u1ec7 hi sinh: Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u1eadn d\u1ee5ng \u0111i\u1ec7n h\u00f3a h\u1ecdc. M\u1ed9t l\u1edbp kim lo\u1ea1i ph\u1ea3n \u1ee9ng m\u1ea1nh h\u01a1n \u0111\u01b0\u1ee3c ph\u1ee7 l\u00ean v\u1eadt li\u1ec7u n\u1ec1n. V\u00ed d\u1ee5, khi th\u00e9p \u0111\u01b0\u1ee3c ph\u1ee7 k\u1ebdm (m\u1ea1 k\u1ebdm), k\u1ebdm c\u00f3 t\u00ednh \u0111i\u1ec7n h\u00f3a ho\u1ea1t \u0111\u1ed9ng h\u01a1n th\u00e9p. N\u1ebfu m\u1ed9t v\u1ebft tr\u1ea7y x\u01b0\u1edbc l\u00e0m l\u1ed9 c\u1ea3 hai kim lo\u1ea1i ra dung d\u1ecbch \u0111i\u1ec7n ly, k\u1ebdm tr\u1edf th\u00e0nh c\u1ef1c \u00e2m v\u00e0 \u0103n m\u00f2n hi sinh, b\u1ea3o v\u1ec7 th\u00e9p, v\u1ed1n \u0111\u00f3ng vai tr\u00f2 c\u1ef1c d\u01b0\u01a1ng.<\/li>\n<\/ol>\n<h2><img decoding=\"async\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/pixabay-4549408.jpg\" height=\"850\" width=\"1280\" class=\"alignnone size-full wp-image-2587\" alt=\"Thi\u1ebft l\u1eadp th\u1eed nghi\u1ec7m \u0103n m\u00f2n hi\u1ec3n th\u1ecb bu\u1ed3ng phun mu\u1ed1i v\u00e0 turbine gi\u00f3 trong c\u1ea3nh quan c\u00f4ng nghi\u1ec7p s\u1ea1ch.\" srcset=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/pixabay-4549408.jpg 1280w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/pixabay-4549408-300x199.jpg 300w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/pixabay-4549408-768x510.jpg 768w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/pixabay-4549408-18x12.jpg 18w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/> <\/h2>\n<h2>Ph\u00e2n t\u00edch bu\u1ed3ng th\u1eed<\/h2>\n<p>Bu\u1ed3ng phun mu\u1ed1i kh\u00f4ng \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t h\u1ed9p ch\u1ee9a s\u01b0\u01a1ng mu\u1ed1i m\u1eb7n. N\u00f3 l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ch\u00ednh x\u00e1c \u0111\u1ec3 duy tr\u00ec m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t nh\u1ea5t qu\u00e1n v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i. M\u1ecdi c\u00e0i \u0111\u1eb7t \u0111\u1ec1u \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd v\u00ec ngay c\u1ea3 nh\u1eefng thay \u0111\u1ed5i nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m.<\/p>\n<h3>C\u00e1c ph\u1ea7n c\u1ee7a t\u1ee7<\/h3>\n<p>M\u1ed9t t\u1ee7 phun mu\u1ed1i \u0111i\u1ec3n h\u00ecnh g\u1ed3m nhi\u1ec1u ph\u1ea7n ch\u00ednh ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau:<\/p>\n<ul>\n<li>Th\u00e2n t\u1ee7: M\u1ed9t h\u1ed9p kh\u00f4ng ph\u1ea3n \u1ee9ng, ch\u1ed1ng \u0103n m\u00f2n, th\u01b0\u1eddng l\u00e0m b\u1eb1ng nh\u1ef1a c\u1ee9ng gia c\u1ed1, c\u00f3 n\u1eafp k\u00edn n\u01b0\u1edbc v\u00e0 c\u00f3 th\u1ec3 gia nhi\u1ec7t \u0111\u1ec3 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m b\u00ean trong.<\/li>\n<li>B\u00ecnh ch\u1ee9a dung d\u1ecbch mu\u1ed1i: M\u1ed9t b\u00ecnh ch\u1ee9a gi\u1eef dung d\u1ecbch mu\u1ed1i \u0111\u00e3 chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi bi\u1ebfn th\u00e0nh s\u01b0\u01a1ng m\u00f9.<\/li>\n<li>V\u00f2i phun phun s\u01b0\u01a1ng: Nh\u1eefng thi\u1ebft b\u1ecb n\u00e0y s\u1eed d\u1ee5ng kh\u00ed n\u00e9n \u0111\u1ec3 bi\u1ebfn \u0111\u1ed5i dung d\u1ecbch mu\u1ed1i th\u00e0nh s\u01b0\u01a1ng m\u00f9 m\u1ecbn, \u0111\u1eb7c, lan t\u1ecfa kh\u1eafp bu\u1ed3ng.<\/li>\n<li>H\u1ec7 th\u1ed1ng s\u01b0\u1edfi \u1ea5m: M\u00e1y s\u01b0\u1edfi, th\u01b0\u1eddng l\u00e0 m\u00e1y s\u01b0\u1edfi d\u1ea1ng \u00e1o n\u01b0\u1edbc ho\u1eb7c \u00e1o kh\u00ed, duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 \u1ed5n \u0111\u1ecbnh b\u00ean trong t\u1ee7.<\/li>\n<li>Gi\u00e1 \u0111\u1ee1 m\u1eabu th\u1eed: L\u00e0m b\u1eb1ng v\u1eadt li\u1ec7u kh\u00f4ng ph\u1ea3n \u1ee9ng (nh\u01b0 nh\u1ef1a), c\u00e1c gi\u00e1 \u0111\u1ee1 n\u00e0y gi\u1eef m\u1eabu th\u1eed \u1edf g\u00f3c c\u1ed1 \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ph\u01a1i nhi\u1ec5m \u0111\u1ec1u v\u00e0 tr\u00e1nh nhi\u1ec5u lo\u1ea1n.<\/li>\n<li>Th\u00e1p l\u00e0m \u1ea9m: M\u1ed9t th\u00e1p n\u01b0\u1edbc \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng \u0111\u1ec3 b\u00e3o h\u00f2a kh\u00f4ng kh\u00ed n\u00e9n tr\u01b0\u1edbc khi \u0111\u1ebfn \u0111\u1ea7u phun t\u1ea1o s\u01b0\u01a1ng, ng\u0103n ch\u1eb7n s\u1ef1 bay h\u01a1i c\u1ee7a c\u00e1c gi\u1ecdt s\u01b0\u01a1ng v\u00e0 gi\u00fap duy tr\u00ec n\u1ed3ng \u0111\u1ed9 c\u1ee7a dung d\u1ecbch.<\/li>\n<\/ul>\n<h3>C\u00e0i \u0111\u1eb7t ki\u1ec3m tra quan tr\u1ecdng<\/h3>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c \u201cl\u00fd do\u201d \u0111\u1eb1ng sau m\u1ed7i c\u00e0i \u0111\u1eb7t ki\u1ec3m so\u00e1t l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf c\u1ee7a b\u00e0i ki\u1ec3m tra.<\/p>\n<h4>Dung d\u1ecbch mu\u1ed1i<\/h4>\n<p>Gi\u1ea3i ph\u00e1p ti\u00eau chu\u1ea9n, theo c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ASTM B117, l\u00e0 dung d\u1ecbch 5% (theo tr\u1ecdng l\u01b0\u1ee3ng) c\u1ee7a natri clorua (NaCl) trong n\u01b0\u1edbc tinh khi\u1ebft, ch\u1ea5t l\u01b0\u1ee3ng ph\u00f2ng th\u00ed nghi\u1ec7m. N\u1ed3ng \u0111\u1ed9 5% \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh t\u1eeb tr\u01b0\u1edbc l\u00e0 cung c\u1ea5p m\u1ee9c \u0111\u1ed9 \u0103n m\u00f2n cao m\u00e0 kh\u00f4ng qu\u00e1 \u0111\u1eb7c \u0111\u1ebfn m\u1ee9c mu\u1ed1i b\u1eaft \u0111\u1ea7u h\u00ecnh th\u00e0nh tinh th\u1ec3 tr\u00ean m\u1eabu. \u0110\u1ed9 tinh khi\u1ebft c\u1ee7a c\u1ea3 mu\u1ed1i v\u00e0 n\u01b0\u1edbc l\u00e0 r\u1ea5t quan tr\u1ecdng. C\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m nh\u01b0 \u0111\u1ed3ng ho\u1eb7c s\u1eaft trong mu\u1ed1i c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 ch\u1ea5t x\u00fac t\u00e1c, l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 \u0103n m\u00f2n m\u1ed9t c\u00e1ch gi\u1ea3 t\u1ea1o v\u00e0 l\u00e0m cho th\u1eed nghi\u1ec7m kh\u00f4ng h\u1ee3p l\u1ec7.<\/p>\n<h4>\u0110\u1ed9 pH c\u1ee7a dung d\u1ecbch<\/h4>\n<p>pH c\u1ee7a dung d\u1ecbch mu\u1ed1i thu th\u1eadp ph\u1ea3i \u0111\u01b0\u1ee3c duy tr\u00ec trong ph\u1ea1m vi h\u1eb9p, g\u1ea7n trung t\u00ednh, th\u01b0\u1eddng t\u1eeb 6.5 \u0111\u1ebfn 7.2. M\u1ee9c \u0111\u1ed9 pH c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u01a1 ch\u1ebf \u0103n m\u00f2n. Dung d\u1ecbch c\u00f3 t\u00ednh axit cao (pH th\u1ea5p) c\u00f3 th\u1ec3 t\u1ea5n c\u00f4ng m\u1ea1nh m\u1ebd kim lo\u1ea1i v\u00e0 c\u00e1c l\u1edbp b\u1ea3o v\u1ec7 c\u1ee7a n\u00f3, trong khi dung d\u1ecbch c\u00f3 t\u00ednh ki\u1ec1m cao (pH cao) c\u00f3 th\u1ec3 th\u00fac \u0111\u1ea9y s\u1ef1 h\u00ecnh th\u00e0nh c\u00e1c l\u1edbp oxit kh\u00e1c nhau, \u0111\u00f4i khi b\u1ea3o v\u1ec7 h\u01a1n. Vi\u1ec7c ki\u1ec3m so\u00e1t pH \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u1ef1 \u0103n m\u00f2n quan s\u00e1t \u0111\u01b0\u1ee3c ch\u1ee7 y\u1ebfu do c\u00e1c h\u1ea1t chloride g\u00e2y ra, kh\u00f4ng ph\u1ea3i do \u0111\u1ed9 axit ho\u1eb7c ki\u1ec1m nh\u00e2n t\u1ea1o.<\/p>\n<h4>Nhi\u1ec7t \u0111\u1ed9 bu\u1ed3ng<\/h4>\n<p>H\u1ea7u h\u1ebft c\u00e1c th\u1eed nghi\u1ec7m phun mu\u1ed1i trung t\u00ednh \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u1ed5i 35\u00b0C \u00b1 2\u00b0C (95\u00b0F \u00b1 3\u00b0F). Nhi\u1ec7t \u0111\u1ed9 ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 c\u1ee7a c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc. Ph\u01b0\u01a1ng tr\u00ecnh Arrhenius cho th\u1ea5y, theo quy t\u1eafc chung, t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng t\u0103ng g\u1ea5p \u0111\u00f4i v\u1edbi m\u1ed7i l\u1ea7n t\u0103ng 10\u00b0C. Ti\u00eau chu\u1ea9n 35\u00b0C cung c\u1ea5p \u0111i\u1ec1u ki\u1ec7n t\u0103ng t\u1ed1c v\u1eeba ph\u1ea3i, \u0111\u1ee7 cao \u0111\u1ec3 \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh \u0103n m\u00f2n nh\u01b0ng kh\u00f4ng qu\u00e1 cao \u0111\u1ec3 g\u00e2y ra c\u00e1c c\u01a1 ch\u1ebf h\u1ecfng h\u00f3c kh\u00f4ng th\u1ef1c t\u1ebf, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u01b0 h\u1ea1i do nhi\u1ec7t \u0111\u1ed1i v\u1edbi l\u1edbp ph\u1ee7 h\u1eefu c\u01a1.<\/p>\n<h4>S\u01b0\u01a1ng m\u00f9 v\u00e0 T\u1ef7 l\u1ec7 thu th\u1eadp<\/h4>\n<p>B\u00e0i ki\u1ec3m tra n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 ki\u1ec3m tra \u201cphun mu\u1ed1i\u201d theo ngh\u0129a phun tr\u1ef1c ti\u1ebfp. \u0110\u00e2y l\u00e0 ki\u1ec3m tra \u201cs\u01b0\u01a1ng mu\u1ed1i\u201d. \u0110\u1ea7u phun t\u1ea1o ra m\u1ed9t l\u1edbp s\u01b0\u01a1ng m\u1ecbn tr\u00f4i xu\u1ed1ng v\u00e0 l\u1eafng \u0111\u1ecdng l\u00ean c\u00e1c m\u1eabu th\u1eed d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a tr\u1ecdng l\u1ef1c. T\u1ed1c \u0111\u1ed9 l\u1eafng \u0111\u1ecdng c\u1ee7a s\u01b0\u01a1ng n\u00e0y, hay c\u00f2n g\u1ecdi l\u00e0 \u201cfall-out\u201d, l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 r\u1ea5t quan tr\u1ecdng. N\u00f3 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng c\u00e1ch \u0111\u1eb7t c\u00e1c ph\u1ec5u thu gom b\u00ean trong bu\u1ed3ng ki\u1ec3m tra v\u00e0 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh l\u00e0 t\u1eeb 1,0 \u0111\u1ebfn 2,0 mililit m\u1ed7i gi\u1edd tr\u00ean di\u1ec7n t\u00edch thu gom n\u1eb1m ngang 80 cm\u00b2. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o b\u1ec1 m\u1eb7t m\u1eabu th\u1eed lu\u00f4n \u0111\u01b0\u1ee3c l\u00e0m \u01b0\u1edbt li\u00ean t\u1ee5c, \u0111\u1ed3ng \u0111\u1ec1u b\u1eb1ng ch\u1ea5t \u0111i\u1ec7n ph\u00e2n m\u1edbi, cung c\u1ea5p n\u01b0\u1edbc v\u00e0 c\u00e1c h\u1ea1t c\u1ea7n thi\u1ebft cho qu\u00e1 tr\u00ecnh \u0103n m\u00f2n m\u00e0 kh\u00f4ng qu\u00e1 m\u1ea1nh \u0111\u1ec3 cu\u1ed1n tr\u00f4i c\u00e1c s\u1ea3n ph\u1ea9m \u0103n m\u00f2n \u0111ang h\u00ecnh th\u00e0nh.<\/p>\n<h4>V\u1ecb tr\u00ed m\u1eabu<\/h4>\n<p>C\u00e1c m\u1eabu kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1eb7t ph\u1eb3ng. Ch\u00fang \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u1edf g\u00f3c nghi\u00eang, th\u01b0\u1eddng t\u1eeb 15 \u0111\u1ebfn 30 \u0111\u1ed9 so v\u1edbi ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng. V\u1ecb tr\u00ed n\u00e0y ph\u1ee5c v\u1ee5 hai m\u1ee5c \u0111\u00edch. Th\u1ee9 nh\u1ea5t, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c gi\u1ecdt s\u01b0\u01a1ng m\u00f9 kh\u00f4ng t\u1ee5 l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t, \u0111i\u1ec1u n\u00e0y s\u1ebd t\u1ea1o ra c\u00e1c khu v\u1ef1c c\u00f3 \u0111i\u1ec1u ki\u1ec7n \u0103n m\u00f2n kh\u00e1c nhau. Th\u1ee9 hai, th\u00fac \u0111\u1ea9y s\u1ef1 ph\u01a1i nhi\u1ec5m \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 cho ph\u00e9p c\u00e1c s\u1ea3n ph\u1ea9m \u0103n m\u00f2n ch\u1ea3y xu\u1ed1ng m\u1eabu theo c\u00e1ch nh\u1ea5t qu\u00e1n t\u1eeb l\u1ea7n th\u1eed n\u00e0y sang l\u1ea7n th\u1eed kh\u00e1c.<\/p>\n<h3>B\u1ea3ng 1: \u1ea2nh h\u01b0\u1edfng c\u1ee7a c\u00e1c tham s\u1ed1<\/h3>\n<p>B\u1ea3ng n\u00e0y t\u00f3m t\u1eaft c\u00e1c thi\u1ebft l\u1eadp ch\u00ednh v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a ch\u00fang trong th\u1eed nghi\u1ec7m phun mu\u1ed1i trung t\u00ednh.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"144\">Th\u00f4ng s\u1ed1<\/td>\n<td width=\"144\">Ph\u1ea1m vi ti\u00eau chu\u1ea9n (ASTM B117)<\/td>\n<td width=\"144\">\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn \u0103n m\u00f2n<\/td>\n<td width=\"144\">T\u1ea1i sao n\u00f3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/td>\n<\/tr>\n<tr>\n<td width=\"144\">N\u1ed3ng \u0111\u1ed9 mu\u1ed1i<\/td>\n<td width=\"144\">5 \u00b1 1% NaCl<\/td>\n<td width=\"144\">Cung c\u1ea5p c\u00e1c h\u1ea1t chloride; n\u1ed3ng \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n v\u00e0 kh\u1ea3 n\u0103ng \u0103n m\u00f2n.<\/td>\n<td width=\"144\">\u0110\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 l\u1eb7p l\u1ea1i c\u1ee7a m\u1ee9c \u0111\u1ed9 \u0103n m\u00f2n c\u1ee7a m\u00f4i tr\u01b0\u1eddng.<\/td>\n<\/tr>\n<tr>\n<td width=\"144\">pH dung d\u1ecbch<\/td>\n<td width=\"144\">6.5 \u2013 7.2<\/td>\n<td width=\"144\">\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a l\u1edbp m\u00e0ng b\u1ea3o v\u1ec7 v\u00e0 t\u1ed1c \u0111\u1ed9 ph\u00e1t sinh hydro.<\/td>\n<td width=\"144\">Ng\u0103n ch\u1eb7n t\u1ed1c \u0111\u1ed9 \u0103n m\u00f2n gi\u1ea3 t\u1ea1o cao ho\u1eb7c th\u1ea5p do axit\/ki\u1ec1m.<\/td>\n<\/tr>\n<tr>\n<td width=\"144\">Nhi\u1ec7t \u0111\u1ed9 bu\u1ed3ng<\/td>\n<td width=\"144\">35 \u00b1 2\u00b0C (95\u00b0F)<\/td>\n<td width=\"144\">Ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc, bao g\u1ed3m c\u1ea3 \u0103n m\u00f2n.<\/td>\n<td width=\"144\">Duy tr\u00ec t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng nh\u1ea5t qu\u00e1n, t\u0103ng t\u1ed1c.<\/td>\n<\/tr>\n<tr>\n<td width=\"144\">T\u1ed1c \u0111\u1ed9 r\u01a1i s\u01b0\u01a1ng m\u00f9<\/td>\n<td width=\"144\">1.0 \u2013 2.0 mL\/gi\u1edd\/80cm\u00b2<\/td>\n<td width=\"144\">X\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng dung d\u1ecbch \u0111i\u1ec7n gi\u1ea3i cung c\u1ea5p cho b\u1ec1 m\u1eb7t m\u1eabu.<\/td>\n<td width=\"144\">\u0110\u1ea3m b\u1ea3o \u1ea9m li\u00ean t\u1ee5c v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u m\u00e0 kh\u00f4ng \u201cr\u1eeda tr\u00f4i\u201d c\u00e1c s\u1ea3n ph\u1ea9m \u0103n m\u00f2n.<\/td>\n<\/tr>\n<tr>\n<td width=\"144\">G\u00f3c m\u1eabu<\/td>\n<td width=\"144\">15 \u2013 30\u00b0 so v\u1edbi ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng<\/td>\n<td width=\"144\">Ng\u0103n ch\u1eb7n t\u1ee5 t\u1eadp gi\u1ecdt n\u01b0\u1edbc v\u00e0 \u0111\u1ea3m b\u1ea3o ti\u1ebfp x\u00fac s\u01b0\u01a1ng m\u00f9 nh\u1ea5t qu\u00e1n.<\/td>\n<td width=\"144\">Th\u00fac \u0111\u1ea9y ph\u01a1i s\u00e1ng \u0111\u1ec1u \u0111\u1eb7n tr\u00ean to\u00e0n b\u1ed9 b\u1ec1 m\u1eb7t th\u1eed nghi\u1ec7m.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>H\u00f3a h\u1ecdc b\u00ean trong<\/h2>\n<p>Ki\u1ec3m tra phun mu\u1ed1i kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt, c\u00f3 mu\u1ed1i. C\u00e1c c\u01a1 ch\u1ebf h\u00f3a h\u1ecdc \u0111\u1eb7c th\u00f9 \u0111ang ho\u1ea1t \u0111\u1ed9ng khi\u1ebfn s\u01b0\u01a1ng mu\u1ed1i li\u00ean t\u1ee5c tr\u1edf n\u00ean \u0111\u1eb7c bi\u1ec7t hung h\u00e3n, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c kim lo\u1ea1i d\u1ef1a v\u00e0o l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 \u0111\u1ec3 b\u1ea3o v\u1ec7, ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u00f4m v\u00e0 <a href=\"https:\/\/productionscrews.com\/vi\/ultimate-guide-stainless-steel-bar-selection-prevent-costly-mistakes-failures\/\"  data-wpil-monitor-id=\"511\" target=\"_blank\">th\u00e9p kh\u00f4ng g\u1ec9<\/a>.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-jybQOCm2jXo.jpg\" height=\"1067\" width=\"1600\" class=\"alignnone size-full wp-image-2586\" alt=\"B\u00e0n tay th\u1ea3 c\u00e1c h\u1ea1t phun mu\u1ed1i \u0111\u1ec3 minh h\u1ecda qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m \u0103n m\u00f2n cho \u1ed1c v\u00edt v\u00e0 bu l\u00f4ng c\u00f4ng nghi\u1ec7p.\" srcset=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-jybQOCm2jXo.jpg 1600w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-jybQOCm2jXo-300x200.jpg 300w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-jybQOCm2jXo-768x512.jpg 768w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-jybQOCm2jXo-1536x1024.jpg 1536w, https:\/\/productionscrews.com\/wp-content\/uploads\/2025\/10\/unsplash-jybQOCm2jXo-18x12.jpg 18w\" sizes=\"(max-width: 1600px) 100vw, 1600px\" \/> <\/p>\n<h3>Ch\u1ea5t x\u00fac t\u00e1c chloride<\/h3>\n<p>Nh\u00e2n t\u1ed1 ch\u00ednh trong th\u1eed nghi\u1ec7m phun mu\u1ed1i l\u00e0 h\u1ea1t chloride (Cl\u207b). Trong khi c\u00e1c h\u1ea1t kh\u00e1c c\u00f3 th\u1ec3 g\u00e2y \u0103n m\u00f2n, chloride l\u00e0 lo\u1ea1i g\u00e2y ph\u00e1 h\u1ee7y \u0111\u1eb7c bi\u1ec7t. K\u00edch th\u01b0\u1edbc nh\u1ecf v\u00e0 \u0111\u1ed9 \u00e2m \u0111i\u1ec7n cao c\u1ee7a n\u00f3 cho ph\u00e9p n\u00f3 x\u00e2m nh\u1eadp v\u00e0o c\u00e1c l\u1edbp oxit b\u1ea3o v\u1ec7 v\u1ed1n \u1ed5n \u0111\u1ecbnh. Nhi\u1ec1u kim lo\u1ea1i ch\u1ed1ng \u0103n m\u00f2n, nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 v\u00e0 nh\u00f4m, t\u1ef1 b\u1ea3o v\u1ec7 b\u1eb1ng c\u00e1ch h\u00ecnh th\u00e0nh m\u1ed9t l\u1edbp oxit m\u1ecfng, v\u00f4 h\u00ecnh v\u00e0 kh\u00f4ng ph\u1ea3n \u1ee9ng tr\u00ean b\u1ec1 m\u1eb7t (v\u00ed d\u1ee5, oxit cr\u00f4m tr\u00ean th\u00e9p kh\u00f4ng g\u1ec9). L\u1edbp \u201cth\u1ee5 \u0111\u1ed9ng\u201d n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t h\u00e0ng r\u00e0o. H\u1ea1t chloride l\u00e0 chuy\u00ean gia trong vi\u1ec7c ph\u00e1 v\u1ee1 l\u1edbp ph\u00f2ng th\u1ee7 n\u00e0y.<\/p>\n<h3>Qu\u00e1 tr\u00ecnh \u0103n m\u00f2n r\u1ed7<\/h3>\n<p>H\u00ecnh th\u1ee9c th\u1ea5t b\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a kim lo\u1ea1i th\u1ee5 \u0111\u1ed9ng trong th\u1eed nghi\u1ec7m phun mu\u1ed1i l\u00e0 \u0103n m\u00f2n r\u1ed7. \u0110\u00e2y l\u00e0 d\u1ea1ng t\u1ea5n c\u00f4ng c\u1ee5c b\u1ed9 v\u00e0 tinh vi c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn th\u1ee7ng nhanh v\u1eadt li\u1ec7u. Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra qua nhi\u1ec1u b\u01b0\u1edbc:<\/p>\n<ol>\n<li>H\u1ea5p ph\u1ee5: C\u00e1c h\u1ea1t chloride mang \u0111i\u1ec7n \u00e2m b\u1ecb h\u1ea5p d\u1eabn v\u00e0 b\u00e1m v\u00e0o b\u1ec1 m\u1eb7t oxit kim lo\u1ea1i mang \u0111i\u1ec7n d\u01b0\u01a1ng. Ch\u00fang c\u00f3 xu h\u01b0\u1edbng t\u1eadp trung t\u1ea1i c\u00e1c \u0111i\u1ec3m y\u1ebfu c\u1ee7a l\u1edbp th\u1ee5 \u0111\u1ed9ng, nh\u01b0 ranh gi\u1edbi h\u1ea1t, t\u1ea1p ch\u1ea5t ho\u1eb7c c\u00e1c khuy\u1ebft t\u1eadt vi m\u00f4.<\/li>\n<li>Th\u00e2m nh\u1eadp: C\u00e1c h\u1ea1t chloride c\u1ea1nh tranh v\u1edbi oxy \u0111\u1ec3 li\u00ean k\u1ebft v\u1edbi c\u00e1c h\u1ea1t kim lo\u1ea1i trong c\u1ea5u tr\u00fac oxit. Cu\u1ed1i c\u00f9ng, ch\u00fang x\u00e2m nh\u1eadp v\u00e0o l\u1edbp th\u1ee5 \u0111\u1ed9ng, ph\u01a1i b\u00e0y m\u1ed9t di\u1ec7n t\u00edch nh\u1ecf c\u1ee7a kim lo\u1ea1i tr\u1ea7n b\u00ean d\u01b0\u1edbi. Di\u1ec7n t\u00edch nh\u1ecf n\u00e0y tr\u1edf th\u00e0nh an\u1ed1t c\u1ee7a m\u1ed9t t\u1ebf b\u00e0o \u0103n m\u00f2n vi m\u00f4 m\u1edbi.<\/li>\n<li>Axit h\u00f3a c\u1ee5c b\u1ed9: Khi m\u1ed9t v\u1ebft r\u1ed7 b\u1eaft \u0111\u1ea7u, qu\u00e1 tr\u00ecnh \u0103n m\u00f2n t\u0103ng t\u1ed1c \u0111\u00e1ng k\u1ec3. Kim lo\u1ea1i \u1edf \u0111\u00e1y v\u1ebft r\u1ed7 h\u00f2a tan (v\u00ed d\u1ee5, Fe \u2192 Fe\u00b2\u207a + 2e\u207b). C\u00e1c h\u1ea1t kim lo\u1ea1i mang \u0111i\u1ec7n d\u01b0\u01a1ng n\u00e0y thu h\u00fat th\u00eam c\u00e1c h\u1ea1t chloride mang \u0111i\u1ec7n \u00e2m v\u00e0o v\u1ebft r\u1ed7, <a href=\"https:\/\/productionscrews.com\/vi\/the-ultimate-guide-to-cold-heading-steel-science-behind-metal-forming\/\"  data-wpil-monitor-id=\"512\" target=\"_blank\">h\u00ecnh th\u00e0nh chloride kim lo\u1ea1i<\/a> v\u00ed d\u1ee5, FeCl\u2082. C\u00e1c chloride kim lo\u1ea1i n\u00e0y sau \u0111\u00f3 ph\u1ea3n \u1ee9ng v\u1edbi n\u01b0\u1edbc (thu\u1ef7 ph\u00e2n), t\u1ea1o ra axit clohidric (HCl) v\u00e0 l\u00e0m gi\u1ea3m pH trong v\u1ebft r\u1ed7 xu\u1ed1ng m\u1ee9c c\u1ef1c k\u1ef3 axit (th\u1ea5p nh\u1ea5t l\u00e0 1-2).<\/li>\n<li>Qu\u00e1 tr\u00ecnh t\u1ef1 duy tr\u00ec: \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t chu tr\u00ecnh t\u1ef1 duy tr\u00ec v\u00e0 gia t\u1ed1c. M\u00f4i tr\u01b0\u1eddng gi\u00e0u chloride v\u00e0 c\u1ef1c k\u1ef3 axit b\u00ean trong v\u1ebft r\u1ed7 \u0103n m\u00f2n kim lo\u1ea1i nhanh h\u01a1n, l\u00e0m cho v\u1ebft r\u1ed7 s\u00e2u h\u01a1n v\u00e0 c\u00f3 t\u00ednh axit cao h\u01a1n. B\u1ec1 m\u1eb7t b\u00ean ngo\u00e0i c\u1ee7a kim lo\u1ea1i v\u1eabn l\u00e0 c\u1ef1c \u00e2m, \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi l\u1edbp th\u1ee5 \u0111\u1ed9ng c\u1ee7a n\u00f3, trong khi v\u1ebft r\u1ed7 nh\u1ecf ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ef1c d\u01b0\u01a1ng m\u1ea1nh m\u1ebd.<\/li>\n<\/ol>\n<h3>S\u01b0\u01a1ng mu\u1ed1i so v\u1edbi ng\u00e2m t\u1ea9m<\/h3>\n<p>S\u01b0\u01a1ng mu\u1ed1i li\u00ean t\u1ee5c th\u01b0\u1eddng hung h\u00e3n h\u01a1n so v\u1edbi vi\u1ec7c ng\u00e2m t\u1ea9m \u0111\u01a1n gi\u1ea3n trong c\u00f9ng m\u1ed9t dung d\u1ecbch mu\u1ed1i. L\u00fd do n\u1eb1m \u1edf kh\u1ea3 n\u0103ng cung c\u1ea5p oxy. Ph\u1ea3n \u1ee9ng t\u1ea1i c\u1ef1c \u00e2m, thi\u1ebft y\u1ebfu cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u1ebf b\u00e0o \u0103n m\u00f2n, \u0111\u00f2i h\u1ecfi ngu\u1ed3n cung c\u1ea5p oxy h\u00f2a tan \u0111\u1ec1u \u0111\u1eb7n tr\u00ean b\u1ec1 m\u1eb7t kim lo\u1ea1i. Trong tr\u01b0\u1eddng h\u1ee3p ng\u00e2m t\u1ea9m ho\u00e0n to\u00e0n, t\u1ed1c \u0111\u1ed9 \u0103n m\u00f2n c\u00f3 th\u1ec3 b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi kh\u1ea3 n\u0103ng oxy di chuy\u1ec3n qua kh\u1ed1i dung d\u1ecbch \u0111\u1ec3 \u0111\u1ebfn c\u1ef1c \u00e2m. Trong m\u00f4i tr\u01b0\u1eddng s\u01b0\u01a1ng mu\u1ed1i, l\u1edbp m\u00e0ng \u0111i\u1ec7n gi\u1ea3i m\u1ecfng tr\u00ean b\u1ec1 m\u1eb7t m\u1eabu c\u00f3 t\u1ef7 l\u1ec7 di\u1ec7n t\u00edch m\u1eb7t ti\u1ebfp x\u00fac so v\u1edbi th\u1ec3 t\u00edch r\u1ea5t l\u1edbn, cho ph\u00e9p n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan cao h\u01a1n li\u00ean t\u1ee5c c\u00f3 s\u1eb5n t\u1ea1i giao di\u1ec7n kim lo\u1ea1i - \u0111i\u1ec7n gi\u1ea3i. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o ph\u1ea3n \u1ee9ng t\u1ea1i c\u1ef1c \u00e2m kh\u00f4ng b\u1ecb thi\u1ebfu oxy, cho ph\u00e9p ph\u1ea3n \u1ee9ng \u0103n m\u00f2n (t\u1ea1i c\u1ef1c d\u01b0\u01a1ng) di\u1ec5n ra v\u1edbi t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a.<\/p>\n<h2>Hi\u1ec3u bi\u1ebft v\u1ec1 c\u00e1c Ti\u00eau chu\u1ea9n<\/h2>\n<p>Trong khi c\u00e1c nguy\u00ean l\u00fd l\u00e0 ph\u1ed5 qu\u00e1t, c\u00e1c quy tr\u00ecnh c\u1ee5 th\u1ec3 \u0111\u1ec3 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m phun mu\u1ed1i \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh b\u1edfi c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf. Nh\u1eefng t\u00e0i li\u1ec7u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t <a href=\"https:\/\/productionscrews.com\/vi\/ultimate-guide-precision-screws-manufacturing-from-materials-to-performance-testing\/\"  data-wpil-monitor-id=\"513\" target=\"_blank\">th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n<\/a> t\u1ea1i m\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m c\u00f3 th\u1ec3 so s\u00e1nh m\u1ed9t c\u00e1ch c\u00f3 \u00fd ngh\u0129a v\u1edbi th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf n\u01a1i kh\u00e1c. Hai ti\u00eau chu\u1ea9n n\u1ed5i b\u1eadt nh\u1ea5t l\u00e0 ASTM B117 v\u00e0 ISO 9227.<\/p>\n<h3>Ti\u00eau chu\u1ea9n ASTM B117<\/h3>\n<p>ASTM B117, \u201cTi\u00eau chu\u1ea9n th\u1ef1c h\u00e0nh v\u1eadn h\u00e0nh thi\u1ebft b\u1ecb phun mu\u1ed1i (s\u01b0\u01a1ng mu\u1ed1i),\u201d l\u00e0 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c tr\u00edch d\u1eabn ph\u1ed5 bi\u1ebfn nh\u1ea5t cho th\u1eed nghi\u1ec7m phun mu\u1ed1i \u1edf nhi\u1ec1u khu v\u1ef1c. C\u1ea7n hi\u1ec3u r\u00f5 r\u1eb1ng B117 l\u00e0 ti\u00eau chu\u1ea9n quy tr\u00ecnh. N\u00f3 m\u00f4 t\u1ea3 c\u1ea9n th\u1eadn c\u00e1ch thi\u1ebft l\u1eadp, v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m \u0111\u1ec3 t\u1ea1o ra m\u00f4i tr\u01b0\u1eddng phun mu\u1ed1i trung l\u1eadp ti\u00eau chu\u1ea9n (NSS). Tuy nhi\u00ean, n\u00f3 kh\u00f4ng quy \u0111\u1ecbnh th\u1eddi gian th\u1eed nghi\u1ec7m ho\u1eb7c y\u00eau c\u1ea7u v\u1ec1 hi\u1ec7u su\u1ea5t (v\u00ed d\u1ee5, \u201ckh\u00f4ng qu\u00e1 5% r\u1ec9 \u0111\u1ecf sau 240 gi\u1edd\u201d). C\u00e1c ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn lu\u00f4n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u, ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m ho\u1eb7c theo th\u1ecfa thu\u1eadn gi\u1eefa nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 kh\u00e1ch h\u00e0ng.<\/p>\n<h3>Ti\u00eau chu\u1ea9n ISO 9227 To\u00e0n C\u1ea7u<\/h3>\n<p>ISO 9227, \u201cC\u00e1c b\u00e0i ki\u1ec3m tra \u0103n m\u00f2n trong m\u00f4i tr\u01b0\u1eddng nh\u00e2n t\u1ea1o \u2014 C\u00e1c b\u00e0i ki\u1ec3m tra phun mu\u1ed1i,\u201d l\u00e0 ti\u00eau chu\u1ea9n ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf Ch\u00e2u \u00c2u v\u00e0 ph\u1ea7n l\u1edbn c\u00e1c khu v\u1ef1c kh\u00e1c tr\u00ean th\u1ebf gi\u1edbi. N\u00f3 l\u00e0 t\u00e0i li\u1ec7u to\u00e0n di\u1ec7n h\u01a1n ASTM B117 v\u00ec bao g\u1ed3m ba lo\u1ea1i b\u00e0i ki\u1ec3m tra phun mu\u1ed1i kh\u00e1c nhau trong m\u1ed9t ti\u00eau chu\u1ea9n duy nh\u1ea5t:<\/p>\n<ul>\n<li>NSS (Phun mu\u1ed1i trung t\u00ednh): \u0110\u00e2y v\u1ec1 ch\u1ee9c n\u0103ng r\u1ea5t gi\u1ed1ng v\u1edbi b\u00e0i ki\u1ec3m tra m\u00f4 t\u1ea3 trong ASTM B117 v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c m\u1ee5c \u0111\u00edch chung t\u01b0\u01a1ng t\u1ef1.<\/li>\n<li>AASS (Phun mu\u1ed1i axit axetic): B\u00e0i ki\u1ec3m tra n\u00e0y m\u1ea1nh h\u01a1n NSS. Axit axetic tinh khi\u1ebft \u0111\u01b0\u1ee3c th\u00eam v\u00e0o dung d\u1ecbch mu\u1ed1i \u0111\u1ec3 gi\u1ea3m pH xu\u1ed1ng kho\u1ea3ng t\u1eeb 3.1 \u0111\u1ebfn 3.3. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra l\u1edbp ph\u1ee7 trang tr\u00ed nh\u01b0 \u0111\u1ed3ng-niken-k\u1ebdm cr\u00f4m v\u00e0 cho nh\u00f4m anodized.<\/li>\n<li>CASS (Phun mu\u1ed1i axit axetic t\u0103ng c\u01b0\u1eddng \u0111\u1ed3ng): \u0110\u00e2y l\u00e0 b\u00e0i ki\u1ec3m tra c\u00f2n kh\u1eafc nghi\u1ec7t h\u01a1n n\u1eefa. Ngo\u00e0i axit axetic, m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf chloride \u0111\u1ed3ng \u0111\u01b0\u1ee3c th\u00eam v\u00e0o dung d\u1ecbch. C\u00e1c h\u1ea1t \u0111\u1ed3ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 ch\u1ea5t x\u00fac t\u00e1c, l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 qu\u00e1 tr\u00ecnh \u0103n m\u00f2n. Nhi\u1ec7t \u0111\u1ed9 bu\u1ed3ng ki\u1ec3m tra c\u0169ng cao h\u01a1n, \u1edf 50\u00b0C. C\u00e1c b\u00e0i ki\u1ec3m tra CASS ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 l\u1edbp m\u1ea1 cr\u00f4m tr\u00ean th\u00e9p, \u0111\u00fac h\u1ee3p kim k\u1ebdm, v\u00e0 nh\u1ef1a, ph\u1ed5 bi\u1ebfn trong ng\u00e0nh \u00f4 t\u00f4 v\u00e0 ng\u00e0nh \u1ed1ng n\u01b0\u1edbc.<\/li>\n<\/ul>\n<h3>B\u1ea3ng 2: So s\u00e1nh ti\u00eau chu\u1ea9n<\/h3>\n<p>B\u1ea3ng n\u00e0y l\u00e0m n\u1ed5i b\u1eadt nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa c\u00e1c ti\u00eau chu\u1ea9n l\u1edbn n\u00e0y.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"115\">\u0110\u1eb7c \u0111i\u1ec3m<\/td>\n<td width=\"115\">ASTM B117 (NSS)<\/td>\n<td width=\"115\">ISO 9227 (NSS)<\/td>\n<td width=\"115\">ISO 9227 (AASS)<\/td>\n<td width=\"115\">ISO 9227 (CASS)<\/td>\n<\/tr>\n<tr>\n<td width=\"115\">Lo\u1ea1i b\u00e0i ki\u1ec3m tra<\/td>\n<td width=\"115\">Phun mu\u1ed1i trung t\u00ednh<\/td>\n<td width=\"115\">Phun mu\u1ed1i trung t\u00ednh<\/td>\n<td width=\"115\">Phun mu\u1ed1i axit axetic<\/td>\n<td width=\"115\">Phun mu\u1ed1i axit axetic t\u0103ng c\u01b0\u1eddng \u0111\u1ed3ng<\/td>\n<\/tr>\n<tr>\n<td width=\"115\">\u1ee8ng d\u1ee5ng ch\u00ednh<\/td>\n<td width=\"115\">Kim lo\u1ea1i s\u1eaft &amp; kh\u00f4ng s\u1eaft; l\u1edbp ph\u1ee7 h\u1eefu c\u01a1 &amp; v\u00f4 c\u01a1<\/td>\n<td width=\"115\">Gi\u1ed1ng nh\u01b0 ASTM B117<\/td>\n<td width=\"115\">L\u1edbp ph\u1ee7 trang tr\u00ed (Cu-Ni-Cr); Nh\u00f4m anodized<\/td>\n<td width=\"115\">Gi\u1ed1ng nh\u01b0 AASS, nh\u01b0ng kh\u1eafc nghi\u1ec7t h\u01a1n; th\u01b0\u1eddng d\u00f9ng cho nh\u1ef1a m\u1ea1<\/td>\n<\/tr>\n<tr>\n<td width=\"115\">pH c\u1ee7a dung d\u1ecbch mu\u1ed1i<\/td>\n<td width=\"115\">6.5 &#8211; 7.2<\/td>\n<td width=\"115\">6.5 &#8211; 7.2<\/td>\n<td width=\"115\">3.1 &#8211; 3.3<\/td>\n<td width=\"115\">3.1 &#8211; 3.3<\/td>\n<\/tr>\n<tr>\n<td width=\"115\">Ch\u1ea5t ph\u1ee5 gia<\/td>\n<td width=\"115\">Kh\u00f4ng c\u00f3<\/td>\n<td width=\"115\">Kh\u00f4ng c\u00f3<\/td>\n<td width=\"115\">Axit Axetic B\u0103ng<\/td>\n<td width=\"115\">Axit Axetic + Chloride \u0110\u1ed3ng (CuCl\u2082)<\/td>\n<\/tr>\n<tr>\n<td width=\"115\">Nhi\u1ec7t \u0111\u1ed9<\/td>\n<td width=\"115\">35\u00b0C<\/td>\n<td width=\"115\">35\u00b0C<\/td>\n<td width=\"115\">35\u00b0C<\/td>\n<td width=\"115\">50\u00b0C<\/td>\n<\/tr>\n<tr>\n<td width=\"115\">S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh<\/td>\n<td width=\"115\">Ch\u1ee7 y\u1ebfu l\u00e0 m\u1ed9t quy tr\u00ecnh ki\u1ec3m tra \u0111\u01a1n, trung t\u00ednh.<\/td>\n<td width=\"115\">M\u1ed9t ti\u00eau chu\u1ea9n to\u00e0n di\u1ec7n ch\u1ee9a nhi\u1ec1u lo\u1ea1i ki\u1ec3m tra (NSS, AASS, CASS).<\/td>\n<td width=\"115\">M\u1ea1nh h\u01a1n do pH th\u1ea5p h\u01a1n.<\/td>\n<td width=\"115\">M\u1ea1nh nh\u1ea5t do pH th\u1ea5p v\u00e0 t\u00e1c d\u1ee5ng x\u00fac t\u00e1c c\u1ee7a \u0111\u1ed3ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Ki\u1ec3m tra CASS<\/h3>\n<p>Ki\u1ec3m tra CASS x\u1ee9ng \u0111\u00e1ng \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp \u0111\u1eb7c bi\u1ec7t do h\u00f3a h\u1ecdc v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u1ed9c \u0111\u00e1o c\u1ee7a n\u00f3. Vi\u1ec7c th\u00eam chloride \u0111\u1ed3ng(II) t\u1ea1o ra m\u00f4i tr\u01b0\u1eddng c\u1ef1c k\u1ef3 \u0103n m\u00f2n \u0111\u1ec3 ki\u1ec3m tra c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1 nhi\u1ec1u l\u1edbp. C\u00e1c h\u1ea1t \u0111\u1ed3ng c\u00f3 th\u1ec3 k\u1ebft t\u1ee7a l\u00ean b\u1ec1 m\u1eb7t m\u1eabu, t\u1ea1o ra c\u00e1c \u0111i\u1ec3m cathode c\u1ee5c b\u1ed9 m\u1edbi l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 \u0103n m\u00f2n c\u1ee7a c\u00e1c kim lo\u1ea1i ho\u1ea1t \u0111\u1ed9ng h\u01a1n trong h\u1ec7 th\u1ed1ng m\u1ea1, nh\u01b0 nickel. Ki\u1ec3m tra n\u00e0y c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 trong vi\u1ec7c ph\u00e1t hi\u1ec7n porosity, v\u1ebft n\u1ee9t ho\u1eb7c \u0111\u1ed9 d\u00e0y kh\u00f4ng \u0111\u1ee7 trong l\u1edbp m\u1ea1 chrome, cho k\u1ebft qu\u1ea3 trong m\u1ed9t ph\u1ea7n nh\u1ecf th\u1eddi gian so v\u1edbi ki\u1ec3m tra NSS.<\/p>\n<h2>T\u1eeb Ki\u1ec3m tra \u0111\u1ebfn Th\u1ef1c t\u1ebf<\/h2>\n<p>B\u01b0\u1edbc cu\u1ed1i c\u00f9ng v\u00e0 quan tr\u1ecdng nh\u1ea5t trong qu\u00e1 tr\u00ecnh l\u00e0 hi\u1ec3u r\u00f5 \u00fd ngh\u0129a c\u1ee7a k\u1ebft qu\u1ea3. \u0110\u00e2y l\u00e0 n\u01a1i ki\u1ebfn th\u1ee9c chuy\u00ean m\u00f4n v\u00e0 hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng v\u1ec1 m\u1ee5c \u0111\u00edch c\u1ee7a ki\u1ec3m tra tr\u1edf n\u00ean quan tr\u1ecdng nh\u1ea5t. S\u1ef1 hi\u1ec3u l\u1ea7m c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u k\u00e9m, t\u1ef1 tin sai v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u1ee7a s\u1ea3n ph\u1ea9m, v\u00e0 g\u00e2y ra c\u00e1c s\u1ef1 c\u1ed1 \u0111\u1eaft \u0111\u1ecf trong th\u1ef1c t\u1ebf.<\/p>\n<h3>Sai l\u1ea7m Gi\u1eefa Gi\u1edd v\u00e0 N\u0103m<\/h3>\n<p>Sai l\u1ea7m l\u1edbn nh\u1ea5t trong vi\u1ec7c di\u1ec5n gi\u1ea3i d\u1eef li\u1ec7u phun mu\u1ed1i l\u00e0 c\u1ed1 g\u1eafng t\u1ea1o ra m\u1ed1i li\u00ean h\u1ec7 tr\u1ef1c ti\u1ebfp gi\u1eefa gi\u1edd ki\u1ec3m tra v\u00e0 tu\u1ed5i th\u1ecd d\u1ecbch v\u1ee5 th\u1ef1c t\u1ebf. \u0110i\u1ec1u n\u00e0y v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 kh\u00f4ng th\u1ec3 v\u00ec bu\u1ed3ng phun mu\u1ed1i l\u00e0 m\u1ed9t m\u00f4i tr\u01b0\u1eddng \u0111\u01a1n gi\u1ea3n h\u00f3a cao v\u00e0 nh\u00e2n t\u1ea1o. N\u00f3 thi\u1ebfu nhi\u1ec1u y\u1ebfu t\u1ed1 g\u00f3p ph\u1ea7n v\u00e0o qu\u00e1 tr\u00ecnh \u0103n m\u00f2n v\u00e0 suy tho\u00e1i trong th\u1ef1c t\u1ebf:<\/p>\n<ul>\n<li>Tia UV: \u00c1nh s\u00e1ng m\u1eb7t tr\u1eddi l\u00e0m h\u1ecfng l\u1edbp ph\u1ee7 h\u1eefu c\u01a1, khi\u1ebfn ch\u00fang gi\u00f2n v\u00e0 th\u1ea5m kh\u00ed.<\/li>\n<li>Chu k\u1ef3 \u01b0\u1edbt\/kh\u00f4: T\u00ednh chu k\u1ef3 c\u1ee7a m\u01b0a v\u00e0 kh\u00f4 c\u00f3 th\u1ec3 t\u1eadp trung mu\u1ed1i \u0103n m\u00f2n v\u00e0 t\u1ea1o ra \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc trong l\u1edbp ph\u1ee7.<\/li>\n<li>Thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9: Chu k\u1ef3 \u0111\u00f3ng b\u0103ng v\u00e0 tan b\u0103ng c\u00f3 th\u1ec3 l\u00e0m n\u1ee9t v\u00e0 t\u00e1ch l\u1edbp ph\u1ee7.<\/li>\n<li>Ch\u1ea5t \u00f4 nhi\u1ec5m kh\u00ed quy\u1ec3n: \u00d4 nhi\u1ec5m c\u00f4ng nghi\u1ec7p nh\u01b0 sulfur dioxide (SO\u2082) v\u00e0 oxit nit\u01a1 (NOx) c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh m\u01b0a axit, t\u1ea1o ra m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n kh\u00e1c v\u00e0 th\u01b0\u1eddng ph\u1ee9c t\u1ea1p h\u01a1n.<\/li>\n<li>M\u00e0i m\u00f2n v\u00e0 m\u00e0i m\u00f2n c\u01a1 h\u1ecdc: Tr\u1ea7y x\u01b0\u1edbc, va \u0111\u1eadp v\u00e0 x\u00f3i m\u00f2n do c\u00e1t ho\u1eb7c b\u1ee5i b\u1ea9n th\u01b0\u1eddng g\u1eb7p trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng nh\u01b0ng kh\u00f4ng c\u00f3 trong bu\u1ed3ng th\u1eed t\u0129nh.<\/li>\n<\/ul>\n<p>Ch\u00fang t\u00f4i \u0111\u00e3 ch\u1ee9ng ki\u1ebfn nhi\u1ec1u s\u1ea3n ph\u1ea9m b\u1ecb h\u1ecfng d\u00f9 \u0111\u00e3 v\u01b0\u1ee3t qua c\u00e1c b\u00e0i ki\u1ec3m tra phun mu\u1ed1i k\u00e9o d\u00e0i, b\u1edfi v\u00ec c\u01a1 ch\u1ebf h\u1ecfng th\u1ef1c t\u1ebf, nh\u01b0 s\u1ef1 suy gi\u1ea3m ch\u1ea5t k\u1ebft d\u00ednh s\u01a1n do tia UV, l\u1ea1i kh\u00f4ng \u0111\u01b0\u1ee3c m\u00f4 ph\u1ecfng trong b\u00e0i ki\u1ec3m tra \u0111\u00f3.<\/p>\n<h3>S\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch<\/h3>\n<p>Khi s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch, th\u1eed nghi\u1ec7m phun mu\u1ed1i l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 c\u1ef1c k\u1ef3 m\u1ea1nh m\u1ebd \u0111\u1ec3 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ph\u00e2n t\u00edch so s\u00e1nh. Nh\u1eefng \u0111i\u1ec3m m\u1ea1nh c\u1ee7a n\u00f3 n\u1eb1m \u1edf:<\/p>\n<ul>\n<li>T\u00ednh nh\u1ea5t qu\u00e1n theo l\u00f4: N\u00f3 cung c\u1ea5p m\u1ed9t ki\u1ec3m tra nhanh \u201c\u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t\u201d \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t <a href=\"https:\/\/productionscrews.com\/vi\/expert-guide-rail-fastening-bolts-production-process-safety-standards\/\"  data-wpil-monitor-id=\"514\" target=\"_blank\">qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t<\/a> D\u00f2ng s\u01a1n ho\u1eb7c b\u1ed3n m\u1ea1 (v\u00ed d\u1ee5 nh\u01b0 d\u00f2ng s\u01a1n ho\u1eb7c b\u1ed3n m\u1ea1) \u1ed5n \u0111\u1ecbnh v\u00e0 li\u00ean t\u1ee5c s\u1ea3n xu\u1ea5t c\u00e1c b\u1ed9 ph\u1eadn c\u00f3 m\u1ee9c \u0111\u1ed9 ch\u1ed1ng \u0103n m\u00f2n nh\u01b0 mong \u0111\u1ee3i.<\/li>\n<li>Ph\u00e2n t\u00edch so s\u00e1nh: \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p l\u00fd t\u01b0\u1edfng \u0111\u1ec3 so s\u00e1nh hi\u1ec7u su\u1ea5t t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a L\u1edbp ph\u1ee7 A so v\u1edbi L\u1edbp ph\u1ee7 B, ho\u1eb7c Nh\u00e0 cung c\u1ea5p X so v\u1edbi Nh\u00e0 cung c\u1ea5p Y, trong \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m so\u00e1t gi\u1ed1ng nhau. N\u00f3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi, \u201cL\u1ef1a ch\u1ecdn n\u00e0o t\u1ed1t h\u01a1n trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t n\u00e0y?\u201d<\/li>\n<li>Ph\u00e1t hi\u1ec7n l\u1ed7i: B\u00e0i ki\u1ec3m tra r\u1ea5t t\u1ed1t trong vi\u1ec7c nhanh ch\u00f3ng ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7i l\u1edbn trong l\u1edbp ph\u1ee7, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1ed7 kim, x\u1ed1p, \u0111\u1ed9 d\u00e0y kh\u00f4ng \u0111\u1ee7 ho\u1eb7c chu\u1ea9n b\u1ecb b\u1ec1 m\u1eb7t k\u00e9m, nh\u1eefng l\u1ed7i c\u00f3 th\u1ec3 kh\u00f4ng nh\u00ecn th\u1ea5y b\u1eb1ng m\u1eaft th\u01b0\u1eddng.<\/li>\n<\/ul>\n<h3>\u0110\u00e1nh gi\u00e1 m\u1ed9t m\u1eabu th\u1eed<\/h3>\n<p>\u0110\u00e1nh gi\u00e1 m\u1eabu th\u1eed nghi\u1ec7m c\u1ea7n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng v\u00e0 d\u1ef1a tr\u00ean c\u00e1c ti\u00eau ch\u00ed \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc, th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt c\u1ee7a s\u1ea3n ph\u1ea9m ho\u1eb7c v\u1eadt li\u1ec7u. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ASTM D1654 cung c\u1ea5p quy tr\u00ecnh \u0111\u00e1nh gi\u00e1 c\u00e1c m\u1eabu s\u01a1n ho\u1eb7c ph\u1ee7 ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh gi\u00e1 ch\u00ednh bao g\u1ed3m:<\/p>\n<ul>\n<li>\u0110\u00e1nh gi\u00e1 ngo\u1ea1i h\u00ecnh: \u0110\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 \u0103n m\u00f2n, th\u01b0\u1eddng b\u1eb1ng c\u00e1ch x\u1ebfp h\u1ea1ng s\u1ed1 l\u01b0\u1ee3ng v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a c\u00e1c v\u1ebft r\u1ec9 s\u00e9t, b\u00f3ng kh\u00ed ho\u1eb7c l\u1ed7 r\u1ed7 theo c\u00e1c bi\u1ec3u \u0111\u1ed3 ti\u00eau chu\u1ea9n.<\/li>\n<li>Scribe Creepback: \u0110\u1ed1i v\u1edbi c\u00e1c t\u1ea5m ph\u1ee7, th\u01b0\u1eddng t\u1ea1o m\u1ed9t v\u1ebft x\u01b0\u1edbc (m\u1ed9t v\u1ebft tr\u1ea7y qua l\u1edbp ph\u1ee7 \u0111\u1ebfn kim lo\u1ea1i n\u1ec1n) tr\u01b0\u1edbc khi th\u1eed nghi\u1ec7m. Sau khi th\u1eed nghi\u1ec7m, l\u01b0\u1ee3ng \u0103n m\u00f2n \u0111\u00e3 \u201cl\u1ea5n\u201d d\u01b0\u1edbi l\u1edbp ph\u1ee7 t\u1eeb \u0111\u01b0\u1eddng v\u1ebft x\u01b0\u1edbc \u0111\u01b0\u1ee3c \u0111o. \u0110\u00e2y l\u00e0 ch\u1ec9 s\u1ed1 xu\u1ea5t s\u1eafc v\u1ec1 \u0111\u1ed9 b\u00e1m d\u00ednh v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a l\u1edbp ph\u1ee7.<\/li>\n<li>Ti\u00eau ch\u00ed \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t: Ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t trong m\u1ed9t <a href=\"https:\/\/productionscrews.com\/vi\/ultimate-guide-to-spring-clip-production-materials-steps-quality-control\/\"  data-wpil-monitor-id=\"515\" target=\"_blank\">h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/a> m\u00f4i tr\u01b0\u1eddng l\u00e0 m\u1ed9t \u0111\u00e1nh gi\u00e1 \u0111\u01a1n gi\u1ea3n qua\/kh\u00f4ng qua sau m\u1ed9t s\u1ed1 gi\u1edd nh\u1ea5t \u0111\u1ecbnh. V\u00ed d\u1ee5, \"kh\u00f4ng qu\u00e1 ba v\u1ebft r\u1ec9 s\u00e9t l\u1edbn h\u01a1n 1mm \u0111\u01b0\u1eddng k\u00ednh sau 96 gi\u1edd.\" Khi \u0111\u00e1nh gi\u00e1, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u00e2n bi\u1ec7t c\u00e1c lo\u1ea1i \u0103n m\u00f2n kh\u00e1c nhau v\u00e0 ghi ch\u00fa v\u1ecb tr\u00ed, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ecf qua \u0103n m\u00f2n b\u1eaft \u0111\u1ea7u t\u1eeb c\u00e1c c\u1ea1nh c\u1eaft tr\u1eeb khi b\u1ea3o v\u1ec7 c\u1ea1nh l\u00e0 ph\u1ea7n c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u00e1nh gi\u00e1.<\/li>\n<\/ul>\n<h3>B\u1ea3ng 3: X\u00e1c \u0111\u1ecbnh l\u1ed7i<\/h3>\n<p>B\u1ea3ng n\u00e0y d\u00f9ng l\u00e0m h\u01b0\u1edbng d\u1eabn th\u1ef1c \u0111\u1ecba \u0111\u1ec3 nh\u1eadn bi\u1ebft c\u00e1c l\u1ed7i \u0103n m\u00f2n ph\u1ed5 bi\u1ebfn quan s\u00e1t \u0111\u01b0\u1ee3c sau th\u1eed nghi\u1ec7m phun mu\u1ed1i v\u00e0 hi\u1ec3u \u00fd ngh\u0129a c\u1ee7a ch\u00fang.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"192\">Lo\u1ea1i l\u1ed7i<\/td>\n<td width=\"192\">H\u00ecnh d\u1ea1ng tr\u1ef1c quan<\/td>\n<td width=\"192\">Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 \/ \u00dd ngh\u0129a c\u1ee7a n\u00f3<\/td>\n<\/tr>\n<tr>\n<td width=\"192\">\u0102n m\u00f2n chung<\/td>\n<td width=\"192\">M\u1ecfng \u0111\u1ed3ng \u0111\u1ec1u ho\u1eb7c r\u1ec9 s\u00e9t tr\u00ean to\u00e0n b\u1ed9 b\u1ec1 m\u1eb7t.<\/td>\n<td width=\"192\">L\u1edbp ph\u1ee7 cung c\u1ea5p \u00edt ho\u1eb7c kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ec9; kim lo\u1ea1i n\u1ec1n r\u1ea5t d\u1ec5 ph\u1ea3n \u1ee9ng. Th\u01b0\u1eddng th\u1ea5y tr\u00ean th\u00e9p tr\u1ea7n, kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7.<\/td>\n<\/tr>\n<tr>\n<td width=\"192\">\u0102n m\u00f2n \u0103n m\u00f2n r\u1ed7<\/td>\n<td width=\"192\">C\u00e1c v\u1ebft r\u1ed7 nh\u1ecf, c\u1ee5c b\u1ed9 ho\u1eb7c l\u1ed7 xuy\u00ean qua b\u1ec1 m\u1eb7t.<\/td>\n<td width=\"192\">S\u1ef1 ph\u00e1 v\u1ee1 c\u1ee5c b\u1ed9 c\u1ee7a l\u1edbp b\u1ea3o v\u1ec7; th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u b\u1edfi c\u00e1c h\u1ea1t chloride. Ch\u1ec9 ra l\u1ed7i trong l\u1edbp m\u00e0ng b\u1ea3o v\u1ec7 c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c nh\u00f4m.<\/td>\n<\/tr>\n<tr>\n<td width=\"192\">S\u01b0 Creepback c\u1ee7a v\u1ebft tr\u1ea7y x\u01b0\u1edbc<\/td>\n<td width=\"192\">\u0102n m\u00f2n lan r\u1ed9ng d\u01b0\u1edbi l\u1edbp ph\u1ee7 t\u1eeb v\u1ebft tr\u1ea7y x\u01b0\u1edbc c\u00f3 ch\u1ee7 \u00fd.<\/td>\n<td width=\"192\">K\u00e9m b\u00e1m d\u00ednh c\u1ee7a l\u1edbp ph\u1ee7; dung d\u1ecbch \u0111i\u1ec7n ph\u00e2n th\u1ea5m v\u00e0o d\u01b0\u1edbi l\u1edbp m\u00e0ng ph\u1ee7. L\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 ch\u00ednh \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng l\u1edbp ph\u1ee7.<\/td>\n<\/tr>\n<tr>\n<td width=\"192\">Xu\u1ea5t hi\u1ec7n b\u00f3ng kh\u00ed<\/td>\n<td width=\"192\">C\u00e1c bong b\u00f3ng ho\u1eb7c m\u00e1i v\u00f2m h\u00ecnh th\u00e0nh trong l\u1edbp ph\u1ee7.<\/td>\n<td width=\"192\">M\u1ea5t kh\u1ea3 n\u0103ng b\u00e1m d\u00ednh do \u00e1p l\u1ef1c t\u1eeb c\u00e1c s\u1ea3n ph\u1ea9m \u0103n m\u00f2n ho\u1eb7c hi\u1ec7u \u1ee9ng th\u1ea9m th\u1ea5u khi n\u01b0\u1edbc \u0111\u01b0\u1ee3c h\u00fat qua l\u1edbp ph\u1ee7. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 theo k\u00edch th\u01b0\u1edbc v\u00e0 m\u1eadt \u0111\u1ed9.<\/td>\n<\/tr>\n<tr>\n<td width=\"192\">\u0102n m\u00f2n d\u1ea1ng s\u1ee3i d\u00e2y<\/td>\n<td width=\"192\">C\u00e1c s\u1ee3i \u0103n m\u00f2n gi\u1ed1ng nh\u01b0 s\u1ee3i ch\u1ec9 ph\u00e1t tri\u1ec3n d\u01b0\u1edbi l\u1edbp ph\u1ee7.<\/td>\n<td width=\"192\">X\u1ea3y ra d\u01b0\u1edbi l\u1edbp ph\u1ee7 h\u1eefu c\u01a1 m\u1ecfng tr\u00ean kim lo\u1ea1i nh\u01b0 nh\u00f4m ho\u1eb7c magi\u00ea, th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u t\u1eeb l\u1ed7i c\u1ee7a l\u1edbp ph\u1ee7. Ch\u1ec9 ra s\u1ef1 k\u00e9m <a href=\"https:\/\/productionscrews.com\/vi\/7-game-changing-surface-treatment-methods-engineers-use-to-enhance-materials\/\"  data-wpil-monitor-id=\"509\" target=\"_blank\">x\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/a>.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>K\u1ebft lu\u1eadn: M\u1ed9t C\u00f4ng c\u1ee5 Chuy\u00ean gia<\/h2>\n<p>H\u00e0nh tr\u00ecnh t\u1eeb vi\u1ec7c hi\u1ec3u b\u1ea3n ch\u1ea5t \u0111i\u1ec7n h\u00f3a c\u01a1 b\u1ea3n c\u1ee7a \u0103n m\u00f2n \u0111\u1ebfn vi\u1ec7c di\u1ec5n gi\u1ea3i k\u1ebft qu\u1ea3 chi ti\u1ebft c\u1ee7a b\u00e0i ki\u1ec3m tra phun mu\u1ed1i l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh k\u1ef9 thu\u1eadt. N\u00f3 \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c c\u00e1c thi\u1ebft l\u1eadp, c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc c\u1ee5 th\u1ec3 \u0111ang di\u1ec5n ra, v\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh gi\u00e1 c\u00f3 k\u1ef7 lu\u1eadt.<\/p>\n<h3>C\u00e1c \u0111i\u1ec3m k\u1ef9 thu\u1eadt ch\u00ednh<\/h3>\n<p>N\u1ebfu c\u00f3 nguy\u00ean t\u1eafc c\u1ed1t l\u00f5i c\u1ea7n r\u00fat ra t\u1eeb ph\u00e2n t\u00edch s\u00e2u n\u00e0y, \u0111\u00f3 l\u00e0:<\/p>\n<ul>\n<li>B\u00e0i ki\u1ec3m tra phun mu\u1ed1i l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p t\u0103ng t\u1ed1c, so s\u00e1nh <a href=\"https:\/\/productionscrews.com\/vi\/raw-material-testing-a-comprehensive-guide-to-quality-control-methods-2024\/\"  data-wpil-monitor-id=\"510\" target=\"_blank\">ki\u1ec3m tra ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/a>, kh\u00f4ng ph\u1ea3i l\u00e0 d\u1ef1 \u0111o\u00e1n tu\u1ed5i th\u1ecd d\u1ecbch v\u1ee5 th\u1ef1c t\u1ebf. Gi\u00e1 tr\u1ecb c\u1ee7a n\u00f3 n\u1eb1m \u1edf kh\u1ea3 n\u0103ng l\u1eb7p l\u1ea1i v\u00e0 so s\u00e1nh.<\/li>\n<li>N\u00f3 ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t m\u00f4i tr\u01b0\u1eddng ki\u1ec3m so\u00e1t, c\u00f3 t\u00ednh ch\u1ea5t \u0103n m\u00f2n cao d\u1ef1a tr\u00ean b\u1ea3n ch\u1ea5t \u0111i\u1ec7n h\u00f3a c\u1ee7a \u0103n m\u00f2n, v\u1edbi c\u00e1c h\u1ea1t chloride \u0111\u00f3ng vai tr\u00f2 x\u00fac t\u00e1c ch\u00ednh trong vi\u1ec7c ph\u00e1 v\u1ee1 l\u1edbp b\u1ea3o v\u1ec7.<\/li>\n<li>Tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t c\u00e1c thi\u1ebft l\u1eadp ti\u00eau chu\u1ea9n v\u1ec1 nhi\u1ec7t \u0111\u1ed9, pH, n\u1ed3ng \u0111\u1ed9 v\u00e0 thu gom s\u01b0\u01a1ng m\u00f9 l\u00e0 ho\u00e0n to\u00e0n c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea1o ra k\u1ebft qu\u1ea3 l\u1eb7p l\u1ea1i v\u00e0 c\u00f3 \u00fd ngh\u0129a.<\/li>\n<li>Vi\u1ec7c di\u1ec5n gi\u1ea3i \u0111\u00fang l\u00e0 r\u1ea5t quan tr\u1ecdng. Tr\u1ecdng t\u00e2m ph\u1ea3i l\u00e0 so s\u00e1nh c\u00e1c m\u1eabu, x\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m y\u1ebfu c\u1ee7a quy tr\u00ecnh v\u00e0 ph\u00e1t hi\u1ec7n khuy\u1ebft t\u1eadt, kh\u00f4ng ph\u1ea3i c\u1ed1 g\u1eafng d\u1ef1 \u0111o\u00e1n s\u1ed1 n\u0103m s\u1eed d\u1ee5ng ngo\u00e0i th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n<h3>Vai Tr\u00f2 Ti\u1ebfp Di\u1ec5n<\/h3>\n<p>M\u1eb7c d\u00f9 c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed \u0103n m\u00f2n chu k\u1ef3 ph\u1ee9c t\u1ea1p h\u01a1n, th\u1eed nghi\u1ec7m phun s\u01b0\u01a1ng mu\u1ed1i v\u1eabn l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed cho s\u1ea3n xu\u1ea5t hi\u1ec7n \u0111\u1ea1i v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng. Khi c\u00e1c nguy\u00ean t\u1eafc c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c t\u00f4n tr\u1ecdng v\u00e0 c\u00e1c gi\u1edbi h\u1ea1n c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c hi\u1ec3u r\u00f5, n\u00f3 cung c\u1ea5p d\u1eef li\u1ec7u v\u00f4 gi\u00e1 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m, x\u00e1c minh ki\u1ec3m so\u00e1t quy tr\u00ecnh v\u00e0 th\u00fac \u0111\u1ea9y \u0111\u1ed5i m\u1edbi v\u1eadt li\u1ec7u. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p th\u1eed kinh \u0111i\u1ec3n m\u00e0 khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi ki\u1ebfn th\u1ee9c chuy\u00ean m\u00f4n, v\u1eabn ti\u1ebfp t\u1ee5c mang l\u1ea1i gi\u00e1 tr\u1ecb to l\u1edbn.<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li class=\"whitespace-normal break-words\">Ti\u00eau Chu\u1ea9n Th\u1eed Nghi\u1ec7m \u0102n M\u00f2n \u2013 ASTM Qu\u1ed1c T\u1ebf <a class=\"underline\" href=\"https:\/\/www.astm.org\/products-services\/standards-and-publications\/standards\/b117.html\" target=\"_blank\" rel=\"noopener\">https:\/\/www.astm.org\/products-services\/standards-and-publications\/standards\/b117.html<\/a><\/li>\n<li class=\"whitespace-normal break-words\">Th\u1eed Nghi\u1ec7m Phun S\u01b0\u01a1ng Mu\u1ed1i \u2013 Ti\u00eau Chu\u1ea9n ISO <a class=\"underline\" href=\"https:\/\/www.iso.org\/standard\/53651.html\" target=\"_blank\" rel=\"noopener\">https:\/\/www.iso.org\/standard\/53651.html<\/a><\/li>\n<li class=\"whitespace-normal break-words\">Khoa H\u1ecdc v\u00e0 K\u1ef9 Thu\u1eadt \u0102n M\u00f2n \u2013 NACE Qu\u1ed1c T\u1ebf (AMPP) <a class=\"underline\" href=\"https:\/\/www.ampp.org\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.ampp.org\/<\/a><\/li>\n<li class=\"whitespace-normal break-words\">Th\u1eed Nghi\u1ec7m V\u1eadt Li\u1ec7u v\u00e0 \u0102n M\u00f2n \u2013 ASM Qu\u1ed1c T\u1ebf <a class=\"underline\" href=\"https:\/\/www.asminternational.org\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.asminternational.org\/<\/a><\/li>\n<li class=\"whitespace-normal break-words\">Gi\u1ea3i Th\u00edch Th\u1eed Nghi\u1ec7m Phun S\u01b0\u01a1ng Mu\u1ed1i \u2013 Wikipedia <a class=\"underline\" href=\"https:\/\/en.wikipedia.org\/wiki\/Salt_spray_test\" target=\"_blank\" rel=\"noopener\">https:\/\/en.wikipedia.org\/wiki\/Salt_spray_test<\/a><\/li>\n<li class=\"whitespace-normal break-words\">Thi\u1ebft B\u1ecb Th\u1eed Nghi\u1ec7m \u0102n M\u00f2n \u2013 Thomasnet <a class=\"underline\" href=\"https:\/\/www.thomasnet.com\/products\/corrosion-testing-equipment-48040800-1.html\" target=\"_blank\" rel=\"noopener\">https:\/\/www.thomasnet.com\/products\/corrosion-testing-equipment-48040800-1.html<\/a><\/li>\n<li class=\"whitespace-normal break-words\">Th\u1eed Nghi\u1ec7m \u0102n M\u00f2n Gia T\u1ed1c \u2013 NIST <a class=\"underline\" href=\"https:\/\/www.nist.gov\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.nist.gov\/<\/a><\/li>\n<li class=\"whitespace-normal break-words\">Th\u1eed Nghi\u1ec7m Hi\u1ec7u Su\u1ea5t L\u1edbp Ph\u1ee7 \u2013 SSPC <a class=\"underline\" href=\"https:\/\/www.sspc.org\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.sspc.org\/<\/a><\/li>\n<li class=\"whitespace-normal break-words\">Ti\u00eau Chu\u1ea9n Th\u1eed Nghi\u1ec7m Ph\u00f2ng Th\u00ed Nghi\u1ec7m \u2013 SAE Qu\u1ed1c T\u1ebf <a class=\"underline\" href=\"https:\/\/www.sae.org\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.sae.org\/<\/a><\/li>\n<li class=\"whitespace-normal break-words\">Khoa H\u1ecdc V\u1eadt Li\u1ec7u v\u00e0 \u0102n M\u00f2n \u2013 ScienceDirect <a class=\"underline\" href=\"https:\/\/www.sciencedirect.com\/topics\/engineering\/salt-spray-test\" target=\"_blank\" rel=\"noopener\">https:\/\/www.sciencedirect.com\/topics\/engineering\/salt-spray-test<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>The Salt Spray Test: A Complete Guide to How It Works and What It Means Introduction: More Than Just a Simple Test The salt spray test is a standard way to speed up corrosion testing that has been helping manufacturers check quality for almost 100 years. Its main job is to test how well materials [&hellip;]<\/p>","protected":false},"author":1,"featured_media":2588,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-2585","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-5g-communication-fasteners"],"_links":{"self":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/2585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/comments?post=2585"}],"version-history":[{"count":3,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/2585\/revisions"}],"predecessor-version":[{"id":2881,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/2585\/revisions\/2881"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/media\/2588"}],"wp:attachment":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/media?parent=2585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/categories?post=2585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/tags?post=2585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}