{"id":6109,"date":"2026-10-15T23:22:57","date_gmt":"2026-10-15T15:22:57","guid":{"rendered":"https:\/\/www.sj-gauge.com\/?p=6109"},"modified":"2026-10-15T23:22:58","modified_gmt":"2026-10-15T15:22:58","slug":"diaphragm-seal-material-selection","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-material-selection\/","title":{"rendered":"L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u gio\u0103ng m\u00e0ng: Li\u1ec7u th\u00e9p kh\u00f4ng g\u1ec9 316L lu\u00f4n ph\u00f9 h\u1ee3p?"},"content":{"rendered":"<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u l\u00e0m k\u00edn m\u00e0ng ng\u0103n b\u1eaft \u0111\u1ea7u t\u1eeb ch\u1ea5t l\u1ecfng trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 t\u1eeb \u201cth\u00e9p kh\u00f4ng g\u1ec9\u201d. M\u00e0ng ng\u0103n v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t l\u1ecfng kh\u00e1c ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c m\u00f4i ch\u1ea5t trong su\u1ed1t qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 v\u00e0 v\u1ec7 sinh. S\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn r\u1ed7, m\u1ecfng, n\u1ee9t v\u00e0 r\u00f2 r\u1ec9 ch\u1ea5t l\u1ecfng trong h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<p>Th\u00e9p kh\u00f4ng g\u1ec9 316L ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, nh\u01b0ng n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 gi\u1ea3i ph\u00e1p to\u00e0n di\u1ec7n cho m\u1ecdi lo\u1ea1i ch\u1ea5t l\u1ecfng ch\u1ee9a axit, ki\u1ec1m, clorua ho\u1eb7c quy tr\u00ecnh h\u00f3a h\u1ecdc \u1edf nhi\u1ec7t \u0111\u1ed9 cao. H\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c thu th\u1eadp \u0111\u1ea7y \u0111\u1ee7 d\u1eef li\u1ec7u v\u1eadn h\u00e0nh, sau \u0111\u00f3 c\u00f9ng nhau x\u00e1c nh\u1eadn v\u1eadt li\u1ec7u v\u00e0 c\u1ea5u tr\u00fac ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\" style=\"width:640px;max-width:100%;margin:32px auto\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1386\" height=\"1135\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-flange-capillary-detail.png\" alt=\"Flanged seal assembly with capillary and pressure switch in a workshop\" class=\"wp-image-6105\" sizes=\"(max-width: 640px) 100vw, 640px\" loading=\"eager\" style=\"display:block;width:100%;height:auto;aspect-ratio:3\/2;object-fit:cover;object-position:center 25%\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-flange-capillary-detail.png 1386w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-flange-capillary-detail-300x246.png 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-flange-capillary-detail-1024x839.png 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-flange-capillary-detail-768x629.png 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-flange-capillary-detail-15x12.png 15w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-flange-capillary-detail-600x491.png 600w\" \/><figcaption class=\"wp-element-caption\" style=\"text-align:center\">H\u00ecnh 1 | M\u1ed9t c\u1ee5m m\u1eb7t b\u00edch v\u00e0 \u1ed1ng mao d\u1eabn minh h\u1ecda l\u00fd do t\u1ea1i sao c\u1ea7n ph\u1ea3i xem x\u00e9t l\u1ea1i to\u00e0n b\u1ed9 c\u1ea5u tr\u00fac ni\u00eam phong. H\u00ecnh \u1ea3nh n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 h\u00ecnh \u1ea3nh ch\u1ea9n \u0111o\u00e1n v\u1eadt li\u1ec7u ho\u1eb7c l\u1ed7i; th\u00f4ng tin nh\u1eadn d\u1ea1ng \u0111\u00e3 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf.<\/figcaption><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"B\u1eadt\/t\u1eaft M\u1ee5c l\u1ee5c\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">B\u1eadt\/T\u1eaft<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #7b1e1c;color:#7b1e1c\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #7b1e1c;color:#7b1e1c\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-material-selection\/#which-parts-need-a-compatibility-check\" >Nh\u1eefng b\u1ed9 ph\u1eadn n\u00e0o c\u1ea7n ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-material-selection\/#prepare-these-details-before-selecting-a-material\" >Chu\u1ea9n b\u1ecb nh\u1eefng th\u00f4ng tin chi ti\u1ebft n\u00e0y tr\u01b0\u1edbc khi ch\u1ecdn v\u1eadt li\u1ec7u.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-material-selection\/#why-temperature-and-cleaning-matter\" >T\u1ea1i sao nhi\u1ec7t \u0111\u1ed9 v\u00e0 qu\u00e1 tr\u00ecnh l\u00e0m s\u1ea1ch l\u1ea1i quan tr\u1ecdng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-material-selection\/#are-special-alloys-or-coatings-always-better\" >Li\u1ec7u h\u1ee3p kim ho\u1eb7c l\u1edbp ph\u1ee7 \u0111\u1eb7c bi\u1ec7t lu\u00f4n t\u1ed1t h\u01a1n?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-material-selection\/#check-the-cause-before-replacing-a-corroded-seal\" >Ki\u1ec3m tra nguy\u00ean nh\u00e2n tr\u01b0\u1edbc khi thay th\u1ebf gio\u0103ng b\u1ecb \u0103n m\u00f2n.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-material-selection\/#international-standards-use-the-right-scope\" >Ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf: S\u1eed d\u1ee5ng ph\u1ea1m vi ph\u00f9 h\u1ee3p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-material-selection\/#frequently-asked-questions\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-material-selection\/#choose-from-the-full-operating-conditions\" >Ch\u1ecdn t\u1eeb c\u00e1c \u0110i\u1ec1u ki\u1ec7n V\u1eadn h\u00e0nh \u0110\u1ea7y \u0111\u1ee7<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-which-parts-need-a-compatibility-check\"><span class=\"ez-toc-section\" id=\"which-parts-need-a-compatibility-check\"><\/span>Nh\u1eefng b\u1ed9 ph\u1eadn n\u00e0o c\u1ea7n ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>M\u00e0ng ng\u0103n m\u1ecfng truy\u1ec1n \u00e1p su\u1ea5t \u0111\u1ebfn h\u1ec7 th\u1ed1ng \u0111o k\u00edn. T\u00f9y thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf, v\u1ecf d\u01b0\u1edbi, kh\u1edbp n\u1ed1i quy tr\u00ecnh, gio\u0103ng v\u00e0 b\u1ea5t k\u1ef3 l\u1edbp l\u00f3t ho\u1eb7c l\u1edbp ph\u1ee7 n\u00e0o c\u0169ng c\u00f3 th\u1ec3 ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t l\u1ecfng trong quy tr\u00ecnh. Ch\u1ec9 ri\u00eang m\u00e0ng ng\u0103n ch\u1ed1ng \u0103n m\u00f2n kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 b\u1ea3o v\u1ec7 v\u1ecf d\u01b0\u1edbi ho\u1eb7c gio\u0103ng kh\u00f4ng t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi ki\u1ec3u l\u1eafp \u0111\u1eb7t m\u1eb7t b\u00edch, h\u00e3y xem x\u00e9t c\u00e1c t\u00f9y ch\u1ecdn v\u1eadt li\u1ec7u th\u00e2n v\u00e0 m\u00e0ng ng\u0103n c\u1ee7a s\u1ea3n ph\u1ea9m. <a href=\"https:\/\/www.sj-gauge.com\/vi\/product\/dif\/\">DIF m\u00e0ng ch\u1eafn c\u00f3 m\u1eb7t b\u00edch<\/a> Ri\u00eang bi\u1ec7t. Danh m\u1ee5c li\u1ec7t k\u00ea c\u00e1c c\u1ea5u h\u00ecnh kh\u1ea3 thi; s\u1ef1 k\u1ebft h\u1ee3p cu\u1ed1i c\u00f9ng v\u1eabn c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn cho m\u00f4i ch\u1ea5t, \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-prepare-these-details-before-selecting-a-material\"><span class=\"ez-toc-section\" id=\"prepare-these-details-before-selecting-a-material\"><\/span>Chu\u1ea9n b\u1ecb nh\u1eefng th\u00f4ng tin chi ti\u1ebft n\u00e0y tr\u01b0\u1edbc khi ch\u1ecdn v\u1eadt li\u1ec7u.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u1ea7n cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 t\u00ean h\u00f3a h\u1ecdc, th\u00e0nh ph\u1ea7n h\u1ed7n h\u1ee3p, ph\u1ea1m vi n\u1ed3ng \u0111\u1ed9, h\u00e0m l\u01b0\u1ee3ng n\u01b0\u1edbc v\u00e0 c\u00e1c t\u1ea1p ch\u1ea5t \u0111\u00e3 bi\u1ebft. M\u00f4 t\u1ea3 nh\u01b0 \u201cch\u1ea5t l\u1ecfng \u0103n m\u00f2n\u201d l\u00e0 kh\u00f4ng \u0111\u1ee7.<\/li>\n\n\n\n<li>Nhi\u1ec7t \u0111\u1ed9 b\u00ecnh th\u01b0\u1eddng v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a, bao g\u1ed3m c\u1ea3 \u0111i\u1ec1u ki\u1ec7n kh\u1edfi \u0111\u1ed9ng, t\u1eaft m\u00e1y v\u00e0 v\u1ec7 sinh.<\/li>\n\n\n\n<li>\u00c1p su\u1ea5t l\u00e0m vi\u1ec7c, \u00e1p su\u1ea5t t\u1ed1i \u0111a, \u0111i\u1ec1u ki\u1ec7n ch\u00e2n kh\u00f4ng v\u00e0 chu k\u1ef3 \u00e1p su\u1ea5t (n\u1ebfu c\u00f3).<\/li>\n\n\n\n<li>C\u00e1c h\u1ea1t r\u1eafn, s\u1ef1 k\u1ebft tinh, \u0111\u1ed9 nh\u1edbt v\u00e0 kh\u1ea3 n\u0103ng m\u00e0i m\u00f2n t\u1ea1i b\u1ec1 m\u1eb7t c\u1ea3m bi\u1ebfn.<\/li>\n\n\n\n<li>C\u00e1c ch\u1ea5t t\u1ea9y r\u1eeda, n\u1ed3ng \u0111\u1ed9, nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1eddi gian ti\u1ebfp x\u00fac; \u0111\u1ed3ng th\u1eddi x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u v\u1ec1 an to\u00e0n th\u1ef1c ph\u1ea9m, v\u1ec7 sinh ho\u1eb7c t\u00e0i li\u1ec7u.<\/li>\n<\/ul>\n\n\n\n<p>H\u00e3y cung c\u1ea5p b\u1ea3ng d\u1eef li\u1ec7u an to\u00e0n v\u00e0 l\u1ecbch s\u1eed v\u1eadn h\u00e0nh n\u1ebfu c\u00f3. Ch\u00fang gi\u00fap x\u00e1c \u0111\u1ecbnh \u1ee9ng d\u1ee5ng, nh\u01b0ng ch\u1ec9 ri\u00eang b\u1ea3ng d\u1eef li\u1ec7u an to\u00e0n kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 thi\u1ebft l\u1eadp kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1eadt li\u1ec7u l\u00e2u d\u00e0i cho m\u00e0ng m\u1ecfng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-temperature-and-cleaning-matter\"><span class=\"ez-toc-section\" id=\"why-temperature-and-cleaning-matter\"><\/span>T\u1ea1i sao nhi\u1ec7t \u0111\u1ed9 v\u00e0 qu\u00e1 tr\u00ecnh l\u00e0m s\u1ea1ch l\u1ea1i quan tr\u1ecdng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>V\u1eadt li\u1ec7u ho\u1ea1t \u0111\u1ed9ng t\u1ed1t \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng c\u00f3 th\u1ec3 b\u1ecb \u0103n m\u00f2n nhanh h\u01a1n khi b\u1ecb nung n\u00f3ng. S\u1ef1 thay \u0111\u1ed5i v\u1ec1 n\u1ed3ng \u0111\u1ed9, t\u1ea1p ch\u1ea5t ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n ti\u1ebfp x\u00fac c\u0169ng c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i c\u01a1 ch\u1ebf \u0103n m\u00f2n. Do \u0111\u00f3, b\u1ea3ng t\u01b0\u01a1ng th\u00edch \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng ch\u1ec9 l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u.<\/p>\n\n\n\n<p>\u0110\u00e1nh gi\u00e1 c\u1ea3 m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t v\u00e0 chu tr\u00ecnh l\u00e0m s\u1ea1ch. V\u00ed d\u1ee5, vi\u1ec7c s\u1eed d\u1ee5ng dung d\u1ecbch l\u00e0m s\u1ea1ch nh\u1eb9 kh\u00f4ng lo\u1ea1i b\u1ecf \u0111\u01b0\u1ee3c nhu c\u1ea7u ki\u1ec3m tra dung d\u1ecbch l\u00e0m s\u1ea1ch n\u00f3ng h\u01a1n ho\u1eb7c \u0111\u1eadm \u0111\u1eb7c h\u01a1n. Trong c\u00e1c \u1ee9ng d\u1ee5ng v\u1ec7 sinh, c\u0169ng c\u1ea7n x\u00e1c nh\u1eadn \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t, thi\u1ebft k\u1ebf k\u1ebft n\u1ed1i, gio\u0103ng v\u00e0 kh\u1ea3 n\u0103ng l\u00e0m s\u1ea1ch.<\/p>\n\n\n\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c k\u1ebft n\u1ed1i quy tr\u00ecnh h\u1ee3p v\u1ec7 sinh, <a href=\"https:\/\/www.sj-gauge.com\/vi\/product\/dis-c\/\">DIS-C gio\u0103ng m\u00e0ng Tri-Clamp v\u1ec7 sinh<\/a> \u0110\u00e2y l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u h\u1eefu \u00edch \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 k\u1ebft n\u1ed1i k\u1eb9p trong d\u1ecbch v\u1ee5 v\u1ec7 sinh. Vi\u1ec7c l\u1ef1a ch\u1ecdn k\u1ebft n\u1ed1i v\u1ec7 sinh ho\u1eb7c t\u00f9y ch\u1ecdn 316L kh\u00f4ng t\u1ef1 n\u00f3 \u0111\u1ea3m b\u1ea3o t\u00ednh ph\u00f9 h\u1ee3p cho m\u1ecdi chu tr\u00ecnh l\u00e0m s\u1ea1ch.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\" style=\"width:640px;max-width:100%;margin:32px auto\"><img loading=\"lazy\" decoding=\"async\" width=\"1087\" height=\"1447\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-material-field.png\" alt=\"Clamp-connected instruments on an industrial process pipe\" class=\"wp-image-6106\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" style=\"display:block;width:100%;height:auto;aspect-ratio:3\/2;object-fit:cover;object-position:center 80%\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-material-field.png 1087w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-material-field-225x300.png 225w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-material-field-769x1024.png 769w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-material-field-768x1022.png 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-material-field-9x12.png 9w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-material-field-300x399.png 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-diaphragm-material-field-600x799.png 600w\" \/><figcaption class=\"wp-element-caption\" style=\"text-align:center\">H\u00ecnh 2 | M\u1ed9t h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t th\u1ef1c t\u1ebf v\u1edbi c\u00e1c m\u1ed1i n\u1ed1i k\u1eb9p. Kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u1ea5p v\u1eadt li\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch h\u00f3a h\u1ecdc ch\u1ec9 d\u1ef1a v\u00e0o h\u00ecnh th\u1ee9c b\u00ean ngo\u00e0i. C\u00e1c nh\u00e3n hi\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-are-special-alloys-or-coatings-always-better\"><span class=\"ez-toc-section\" id=\"are-special-alloys-or-coatings-always-better\"><\/span>Li\u1ec7u h\u1ee3p kim ho\u1eb7c l\u1edbp ph\u1ee7 \u0111\u1eb7c bi\u1ec7t lu\u00f4n t\u1ed1t h\u01a1n?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>H\u1ee3p kim niken, tantali, titan v\u00e0 l\u1edbp ph\u1ee7 fluoropolymer \u0111\u1ec1u c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf \u1ee9ng d\u1ee5ng ri\u00eang. H\u00e3y so s\u00e1nh kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch h\u00f3a h\u1ecdc c\u00f9ng v\u1edbi gi\u1edbi h\u1ea1n \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9, ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p n\u1ed1i, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 chi ph\u00ed. V\u1eadt li\u1ec7u \u0111\u1eaft ti\u1ec1n h\u01a1n kh\u00f4ng t\u1ef1 \u0111\u1ed9ng l\u00e0 v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n<p>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n kh\u00e1c v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n. \u0110\u1ed1i v\u1edbi ch\u1ea5t l\u1ecfng c\u00f3 ch\u1ee9a c\u00e1c h\u1ea1t, c\u1ea7n xem x\u00e9t l\u1ea1i quy tr\u00ecnh v\u1eadn h\u00e0nh v\u00e0 l\u00e0m s\u1ea1ch c\u0169ng nh\u01b0 v\u1eadt li\u1ec7u m\u00e0ng ng\u0103n. L\u1edbp ph\u1ee7 c\u1ea7n c\u00f3 gi\u1edbi h\u1ea1n s\u1eed d\u1ee5ng ph\u00f9 h\u1ee3p v\u00e0 b\u1ec1 m\u1eb7t nguy\u00ean v\u1eb9n; ch\u00fang kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c coi l\u00e0 gi\u1ea3i ph\u00e1p s\u1eeda ch\u1eefa cho m\u00e0ng ng\u0103n \u0111\u00e3 b\u1ecb h\u01b0 h\u1ecfng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-check-the-cause-before-replacing-a-corroded-seal\"><span class=\"ez-toc-section\" id=\"check-the-cause-before-replacing-a-corroded-seal\"><\/span>Ki\u1ec3m tra nguy\u00ean nh\u00e2n tr\u01b0\u1edbc khi thay th\u1ebf gio\u0103ng b\u1ecb \u0103n m\u00f2n.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ghi l\u1ea1i v\u1ecb tr\u00ed x\u1ea3y ra h\u01b0 h\u1ecfng v\u00e0 li\u1ec7u m\u00f4i tr\u01b0\u1eddng, n\u1ed3ng \u0111\u1ed9, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p l\u00e0m s\u1ea1ch c\u00f3 thay \u0111\u1ed5i hay kh\u00f4ng. Vi\u1ec7c thay th\u1ebf gio\u0103ng b\u1eb1ng lo\u1ea1i c\u00f3 c\u00f9ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt m\u00e0 kh\u00f4ng xem x\u00e9t l\u1ea1i c\u00e1c \u0111i\u1ec1u ki\u1ec7n n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c h\u01b0 h\u1ecfng l\u1eb7p l\u1ea1i. Ch\u1ec9 d\u1ef1a v\u00e0o m\u00e0u s\u1eafc b\u1ec1 m\u1eb7t kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c c\u1eb7n b\u00e1m, qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 \u0103n m\u00f2n \u0111ang di\u1ec5n ra.<\/p>\n\n\n\n<p>N\u1ebfu nghi ng\u1edd r\u00f2 r\u1ec9 ho\u1eb7c m\u00e0ng ng\u0103n b\u1ecb h\u01b0 h\u1ecfng, h\u00e3y th\u1ef1c hi\u1ec7n quy tr\u00ecnh c\u00e1ch ly v\u00e0 b\u1ea3o tr\u00ec nh\u00e0 m\u00e1y tr\u01b0\u1edbc khi ki\u1ec3m tra. Kh\u00f4ng \u0111\u01b0\u1ee3c m\u1edf c\u1ee5m gio\u0103ng \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ed5 \u0111\u1ea7y ho\u1eb7c c\u1ea1o l\u1edbp m\u00e0ng ng\u0103n m\u1ecfng. Tham kh\u1ea3o <a href=\"https:\/\/www.sj-gauge.com\/vi\/diaphragm-seal-process-leak\/\">R\u00f2 r\u1ec9 trong qu\u00e1 tr\u00ecnh l\u00e0m k\u00edn m\u00e0ng ng\u0103n: C\u1ea7n ki\u1ec3m tra nh\u1eefng g\u00ec?<\/a> \u0111\u1ec3 bi\u1ebft c\u00e1c \u0111i\u1ec3m kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 li\u00ean quan.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-international-standards-use-the-right-scope\"><span class=\"ez-toc-section\" id=\"international-standards-use-the-right-scope\"><\/span>Ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf: S\u1eed d\u1ee5ng ph\u1ea1m vi ph\u00f9 h\u1ee3p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/pressure-gauges-and-gauge-attachments\">Ti\u00eau chu\u1ea9n ASME B40.100-2022<\/a>T\u00e0i li\u1ec7u n\u00e0y bao g\u1ed3m c\u00e1c \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t v\u00e0 c\u00e1c ph\u1ee5 ki\u1ec7n k\u00e8m theo, k\u1ec3 c\u1ea3 c\u00e1c gio\u0103ng m\u00e0ng ch\u1eafn. H\u00e3y s\u1eed d\u1ee5ng n\u00f3 nh\u01b0 m\u1ed9t khung tham kh\u1ea3o c\u00f9ng v\u1edbi c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u1ee9ng d\u1ee5ng v\u00e0 v\u1eadt li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.iso.org\/standard\/79658.html\">ISO 15156-1:2020<\/a>Ti\u00eau chu\u1ea9n n\u00e0y \u0111\u01b0a ra c\u00e1c nguy\u00ean t\u1eafc chung \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u00e0 \u0111\u00e1nh gi\u00e1 c\u00e1c v\u1eadt li\u1ec7u kim lo\u1ea1i c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t do H\u2082S trong s\u1ea3n xu\u1ea5t d\u1ea7u kh\u00ed v\u00e0 d\u1ecbch v\u1ee5 l\u00e0m ng\u1ecdt kh\u00ed t\u1ef1 nhi\u00ean. N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 ti\u00eau chu\u1ea9n t\u01b0\u01a1ng th\u00edch \u0103n m\u00f2n chung cho t\u1ea5t c\u1ea3 c\u00e1c quy tr\u00ecnh h\u00f3a h\u1ecdc.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/bpe-bioprocessing-equipment-(1)\">ASME BPE-2026<\/a>: \u0111\u1ec1 c\u1eadp \u0111\u1ebfn thi\u1ebft b\u1ecb d\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 y\u00eau c\u1ea7u v\u1ec7 sinh cao, bao g\u1ed3m v\u1eadt li\u1ec7u, thi\u1ebft k\u1ebf v\u00e0 ch\u1ebf t\u1ea1o. Ch\u1ec9 ri\u00eang vi\u1ec7c ch\u1ec9 \u0111\u1ecbnh h\u1ee3p kim kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ednh ph\u00f9 h\u1ee3p v\u1ec1 m\u1eb7t v\u1ec7 sinh.<\/li>\n<\/ul>\n\n\n\n<p>H\u00e3y x\u00e1c nh\u1eadn phi\u00ean b\u1ea3n \u00e1p d\u1ee5ng v\u00e0 c\u00e1c t\u00e0i li\u1ec7u c\u1ea7n thi\u1ebft so v\u1edbi \u0111\u1eb7c t\u1ea3 d\u1ef1 \u00e1n v\u00e0 c\u00e1c y\u00eau c\u1ea7u \u0111\u1ecba ph\u01b0\u01a1ng. Vi\u1ec7c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t ti\u00eau chu\u1ea9n kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 s\u1ea3n ph\u1ea9m \u0111\u00f3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn theo ti\u00eau chu\u1ea9n \u0111\u00f3 ho\u1eb7c m\u1ecdi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u0111\u1ec1u ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\"><span class=\"ez-toc-section\" id=\"frequently-asked-questions\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-is-slight-discolouration-on-a-diaphragm-normal\">Hi\u1ec7n t\u01b0\u1ee3ng m\u00e0ng ng\u0103n \u00e2m \u0111\u1ea1o h\u01a1i \u0111\u1ed5i m\u00e0u c\u00f3 b\u00ecnh th\u01b0\u1eddng kh\u00f4ng?<\/h3>\n\n\n\n<p>\u0110\u00f3 c\u00f3 th\u1ec3 l\u00e0 do c\u1eb7n b\u00e1m, qu\u00e1 tr\u00ecnh oxy h\u00f3a ho\u1eb7c \u0103n m\u00f2n. H\u00e3y xem x\u00e9t k\u1ef9 t\u00ecnh tr\u1ea1ng b\u1ec1 m\u1eb7t, \u0111\u1eb7c t\u00ednh \u0111o l\u01b0\u1eddng v\u00e0 k\u1ebft qu\u1ea3 ki\u1ec3m tra thay v\u00ec ch\u1ec9 \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean m\u00e0u s\u1eafc. H\u00e3y nh\u1edd nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e1nh gi\u00e1 nh\u1eefng ch\u1ed7 nghi ng\u1edd b\u1ecb m\u1ecfng ho\u1eb7c h\u01b0 h\u1ecfng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-is-316l-enough-for-a-food-or-hygienic-application\">Li\u1ec7u 316L c\u00f3 \u0111\u1ee7 d\u00f9ng cho c\u00e1c \u1ee9ng d\u1ee5ng li\u00ean quan \u0111\u1ebfn th\u1ef1c ph\u1ea9m ho\u1eb7c v\u1ec7 sinh kh\u00f4ng?<\/h3>\n\n\n\n<p>Kh\u00f4ng. H\u00e3y x\u00e1c nh\u1eadn \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t, k\u1ebft n\u1ed1i quy tr\u00ecnh, gio\u0103ng, \u0111i\u1ec1u ki\u1ec7n l\u00e0m s\u1ea1ch v\u00e0 c\u00e1c t\u00e0i li\u1ec7u c\u1ea7n thi\u1ebft nh\u01b0 m\u1ed9t c\u1ee5m l\u1eafp r\u00e1p ho\u00e0n ch\u1ec9nh. Tr\u01b0\u1eddng h\u1ee3p c\u1ea7n x\u00e1c \u0111\u1ecbnh t\u00ednh ph\u00f9 h\u1ee3p c\u1ee7a ch\u1ea5t l\u1ecfng d\u00f9ng \u0111\u1ec3 \u0111\u1ed5 \u0111\u1ea7y, h\u00e3y ch\u1ec9 r\u00f5 \u0111i\u1ec1u \u0111\u00f3 ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-choose-from-the-full-operating-conditions\"><span class=\"ez-toc-section\" id=\"choose-from-the-full-operating-conditions\"><\/span>Ch\u1ecdn t\u1eeb c\u00e1c \u0110i\u1ec1u ki\u1ec7n V\u1eadn h\u00e0nh \u0110\u1ea7y \u0111\u1ee7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00e0ng ch\u1eafn k\u00edn \u0111\u00e1ng tin c\u1eady k\u1ebft h\u1ee3p c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 m\u00f4i ch\u1ea5t, n\u1ed3ng \u0111\u1ed9, nhi\u1ec7t \u0111\u1ed9, \u00e1p su\u1ea5t, h\u1ea1t v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u00e0m s\u1ea1ch v\u1edbi to\u00e0n b\u1ed9 c\u1ea5u tr\u00fac ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t l\u1ecfng. H\u00e3y chia s\u1ebb nh\u1eefng chi ti\u1ebft n\u00e0y v\u1edbi SJ Gauge tr\u01b0\u1edbc khi x\u00e1c nh\u1eadn v\u1eadt li\u1ec7u v\u00e0 ki\u1ec3u m\u00e1y.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.sj-gauge.com\/vi\/contact\/\">Th\u1ea3o lu\u1eadn v\u1ec1 vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u l\u00e0m k\u00edn m\u00e0ng ng\u0103n.<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Choosing a diaphragm seal material starts with the process fluid, not simply the word \u201cstainless.\u201d The diaphragm and other wetted parts must withstand the medium throughout normal operation, temperature excursions and cleaning. A mismatch can lead to pitting, thinning, cracks and leakage of the system fill fluid. 316L stainless steel suits many industrial applications, but [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":6105,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[71],"class_list":["post-6109","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-pressure"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v28.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Diaphragm Seal Material Selection: 316L &amp; Beyond | SJ Gauge<\/title>\n<meta name=\"description\" content=\"Select diaphragm seal materials for the actual medium, concentration, temperature and cleaning cycle. 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