{"id":55284,"date":"2022-06-02T19:58:36","date_gmt":"2022-06-03T00:58:36","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-is-the-foil-test-done\/"},"modified":"2025-01-21T07:13:12","modified_gmt":"2025-01-21T12:13:12","slug":"how-is-the-foil-test-done","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-is-the-foil-test-done\/","title":{"rendered":"Th\u1eed nghi\u1ec7m l\u00e1 nh\u00f4m: Quy tr\u00ecnh th\u1ef1c hi\u1ec7n chi ti\u1ebft"},"content":{"rendered":"<p>Vi\u1ec7c ki\u1ec3m tra l\u00e1 nh\u00f4m, hay c\u00f2n g\u1ecdi l\u00e0 foil test, l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y l\u00e0m s\u1ea1ch b\u1eb1ng s\u00f3ng si\u00eau \u00e2m.  Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng \u0111\u00e1nh gi\u00e1 m\u1ed9t c\u00e1ch tr\u1ef1c quan kh\u1ea3 n\u0103ng l\u00e0m s\u1ea1ch v\u00e0 ph\u00e2n b\u1ed1 s\u00f3ng si\u00eau \u00e2m trong b\u1ec3 r\u1eeda.  B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch th\u1ef1c hi\u1ec7n foil test m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p>\n<h3>Chu\u1ea9n b\u1ecb d\u1ee5ng c\u1ee5 v\u00e0 v\u1eadt li\u1ec7u<\/h3>\n<p>\u0110\u1ec3 th\u1ef1c hi\u1ec7n foil test, b\u1ea1n c\u1ea7n chu\u1ea9n b\u1ecb nh\u1eefng v\u1eadt d\u1ee5ng sau:<\/p>\n<ul>\n<li>M\u1ed9t b\u1ec3 r\u1eeda si\u00eau \u00e2m \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ed5 \u0111\u1ea7y dung d\u1ecbch l\u00e0m s\u1ea1ch. Dung d\u1ecbch n\u00e0y c\u00f3 th\u1ec3 l\u00e0 n\u01b0\u1edbc th\u00f4ng th\u01b0\u1eddng ho\u1eb7c dung d\u1ecbch chuy\u00ean d\u1ee5ng t\u00f9y thu\u1ed9c v\u00e0o m\u1ee5c \u0111\u00edch l\u00e0m s\u1ea1ch.<\/li>\n<li>M\u1ed9t t\u1ea5m l\u00e1 nh\u00f4m m\u1ecfng. \u0110\u1ed9 d\u00e0y khuy\u1ebfn ngh\u1ecb l\u00e0 kho\u1ea3ng 0.05mm \u0111\u1ebfn 0.1mm.  K\u00edch th\u01b0\u1edbc t\u1ea5m nh\u00f4m c\u1ea7n \u0111\u1ee7 l\u1edbn \u0111\u1ec3 ph\u1ee7 k\u00edn m\u1ed9t ph\u1ea7n di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t dung d\u1ecbch.<\/li>\n<li>M\u1ed9t v\u1eadt n\u1eb7ng (v\u00ed d\u1ee5: vi\u00ean \u0111\u00e1 nh\u1ecf, mi\u1ebfng s\u1ee9) \u0111\u1ec3 gi\u1eef cho l\u00e1 nh\u00f4m ch\u00ecm trong dung d\u1ecbch v\u00e0 kh\u00f4ng n\u1ed5i l\u00ean.<\/li>\n<li>B\u00fat \u0111\u00e1nh d\u1ea5u \u0111\u1ec3 ghi ch\u00fa k\u1ebft qu\u1ea3.<\/li>\n<\/ul>\n<h3>Ti\u1ebfn h\u00e0nh ki\u1ec3m tra<\/h3>\n<p>\u0110\u1ea7u ti\u00ean, \u0111\u1eb7t t\u1ea5m l\u00e1 nh\u00f4m l\u00ean b\u1ec1 m\u1eb7t dung d\u1ecbch trong b\u1ec3 r\u1eeda.  S\u1eed d\u1ee5ng v\u1eadt n\u1eb7ng \u0111\u1ec3 gi\u1eef cho l\u00e1 nh\u00f4m ch\u00ecm ho\u00e0n to\u00e0n v\u00e0 tr\u1ea3i ph\u1eb3ng.  B\u1eadt m\u00e1y l\u00e0m s\u1ea1ch si\u00eau \u00e2m v\u00e0 cho m\u00e1y ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh, th\u01b0\u1eddng l\u00e0 t\u1eeb 5 \u0111\u1ebfn 10 ph\u00fat.<\/p>\n<h3>\u0110\u00e1nh gi\u00e1 k\u1ebft qu\u1ea3<\/h3>\n<p>Sau khi t\u1eaft m\u00e1y, l\u1ea5y t\u1ea5m l\u00e1 nh\u00f4m ra kh\u1ecfi b\u1ec3 r\u1eeda v\u00e0 quan s\u00e1t k\u1ef9 b\u1ec1 m\u1eb7t.  N\u1ebfu m\u00e1y l\u00e0m s\u1ea1ch si\u00eau \u00e2m ho\u1ea1t \u0111\u1ed9ng t\u1ed1t v\u00e0 s\u00f3ng si\u00eau \u00e2m ph\u00e2n b\u1ed1 \u0111\u1ec1u, b\u1ec1 m\u1eb7t l\u00e1 nh\u00f4m s\u1ebd xu\u1ea5t hi\u1ec7n nhi\u1ec1u l\u1ed7 nh\u1ecf li ti v\u00e0 ph\u00e2n b\u1ed1 \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>K\u1ebft qu\u1ea3<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<th>Nguy\u00ean nh\u00e2n ti\u1ec1m \u1ea9n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Nhi\u1ec1u l\u1ed7 nh\u1ecf, ph\u00e2n b\u1ed1 \u0111\u1ec1u<\/td>\n<td>M\u00e1y ho\u1ea1t \u0111\u1ed9ng t\u1ed1t, s\u00f3ng si\u00eau \u00e2m ph\u00e2n b\u1ed1 \u0111\u1ec1u<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u00cdt l\u1ed7 ho\u1eb7c kh\u00f4ng c\u00f3 l\u1ed7<\/td>\n<td>M\u00e1y c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng ho\u1eb7c s\u00f3ng si\u00eau \u00e2m kh\u00f4ng \u0111\u1ee7 m\u1ea1nh<\/td>\n<td>Ki\u1ec3m tra ngu\u1ed3n \u0111i\u1ec7n, b\u1ed9 ph\u1eadn ph\u00e1t s\u00f3ng si\u00eau \u00e2m<\/td>\n<\/tr>\n<tr>\n<td>L\u1ed7 t\u1eadp trung \u1edf m\u1ed9t s\u1ed1 v\u1ecb tr\u00ed<\/td>\n<td>S\u00f3ng si\u00eau \u00e2m ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ec1u<\/td>\n<td>Ki\u1ec3m tra v\u1ecb tr\u00ed \u0111\u1eb7t v\u1eadt c\u1ea7n l\u00e0m s\u1ea1ch, l\u01b0\u1ee3ng dung d\u1ecbch<\/td>\n<\/tr>\n<tr>\n<td>L\u00e1 nh\u00f4m b\u1ecb r\u00e1ch<\/td>\n<td>C\u01b0\u1eddng \u0111\u1ed9 s\u00f3ng si\u00eau \u00e2m qu\u00e1 m\u1ea1nh ho\u1eb7c th\u1eddi gian ki\u1ec3m tra qu\u00e1 l\u00e2u<\/td>\n<td>Gi\u1ea3m c\u01b0\u1eddng \u0111\u1ed9 ho\u1eb7c th\u1eddi gian ki\u1ec3m tra<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3<\/h3>\n<p>M\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 c\u1ee7a foil test, bao g\u1ed3m:<\/p>\n<ul>\n<li>T\u1ea7n s\u1ed1 si\u00eau \u00e2m: T\u1ea7n s\u1ed1 cao th\u01b0\u1eddng t\u1ea1o ra c\u00e1c l\u1ed7 nh\u1ecf h\u01a1n v\u00e0 ph\u00e2n b\u1ed1 d\u00e0y h\u01a1n.<\/li>\n<li>C\u00f4ng su\u1ea5t si\u00eau \u00e2m: C\u00f4ng su\u1ea5t cao t\u1ea1o ra hi\u1ec7u \u1ee9ng cavitation m\u1ea1nh h\u01a1n, d\u1eabn \u0111\u1ebfn nhi\u1ec1u l\u1ed7 h\u01a1n tr\u00ean l\u00e1 nh\u00f4m.<\/li>\n<li>Lo\u1ea1i dung d\u1ecbch: M\u1ed9t s\u1ed1 dung d\u1ecbch c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh cavitation.<\/li>\n<li>Th\u1eddi gian ki\u1ec3m tra: Th\u1eddi gian ki\u1ec3m tra qu\u00e1 ng\u1eafn c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 t\u1ea1o ra hi\u1ec7u \u1ee9ng r\u00f5 r\u00e0ng, trong khi th\u1eddi gian qu\u00e1 d\u00e0i c\u00f3 th\u1ec3 l\u00e0m r\u00e1ch l\u00e1 nh\u00f4m.<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, foil test l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y l\u00e0m s\u1ea1ch si\u00eau \u00e2m.  B\u1eb1ng c\u00e1ch quan s\u00e1t s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee7a c\u00e1c l\u1ed7 tr\u00ean l\u00e1 nh\u00f4m, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t l\u00e0m s\u1ea1ch v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c v\u1ea5n \u0111\u1ec1 ti\u1ec1m \u1ea9n c\u1ee7a m\u00e1y.  Vi\u1ec7c th\u1ef1c hi\u1ec7n foil test \u0111\u1ecbnh k\u1ef3 gi\u00fap \u0111\u1ea3m b\u1ea3o m\u00e1y ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c ki\u1ec3m tra l\u00e1 nh\u00f4m, hay c\u00f2n g\u1ecdi l\u00e0 foil test, l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y l\u00e0m s\u1ea1ch b\u1eb1ng s\u00f3ng si\u00eau \u00e2m. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng \u0111\u00e1nh gi\u00e1 m\u1ed9t c\u00e1ch tr\u1ef1c quan kh\u1ea3 n\u0103ng l\u00e0m s\u1ea1ch v\u00e0 ph\u00e2n b\u1ed1 s\u00f3ng si\u00eau<\/p>\n","protected":false},"author":1,"featured_media":20058,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-55284","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/55284","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=55284"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/55284\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/20058"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=55284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=55284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=55284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}