{"id":3086,"date":"2023-06-23T10:19:01","date_gmt":"2023-06-23T10:19:01","guid":{"rendered":"https:\/\/web.webrt.net\/phongvu\/?p=3086"},"modified":"2023-06-23T10:19:01","modified_gmt":"2023-06-23T10:19:01","slug":"nhiet-luyen-la-gi-cac-phuong-phap-nhiet-luyen-va-ung-dung","status":"publish","type":"post","link":"https:\/\/web.webrt.net\/phongvu\/?p=3086","title":{"rendered":"Nhi\u1ec7t luy\u1ec7n l\u00e0 g\u00ec? C\u00e1c ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t luy\u1ec7n v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_50 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">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=\"Toggle Table of Content\" role=\"button\"><label for=\"item-69d0995b472f7\" aria-hidden=\"true\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #999;color:#999\" 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: #999;color:#999\" 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><\/label><input  type=\"checkbox\" id=\"item-69d0995b472f7\"><\/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:\/\/web.webrt.net\/phongvu\/?p=3086\/#Cac_phuong_phap_nhiet_luyen\" title=\"C\u00e1c ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t luy\u1ec7n\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t luy\u1ec7n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/web.webrt.net\/phongvu\/?p=3086\/#Ung_dung_cua_nhiet_luyen\" title=\"\u1ee8ng d\u1ee5ng c\u1ee7a nhi\u1ec7t luy\u1ec7n\">\u1ee8ng d\u1ee5ng c\u1ee7a nhi\u1ec7t luy\u1ec7n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/web.webrt.net\/phongvu\/?p=3086\/#Ket_luan\" title=\"K\u1ebft lu\u1eadn\">K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>Nhi\u1ec7t luy\u1ec7n<\/strong>\u00a0l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p t\u00e1c \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 l\u00ean v\u1eadt ch\u1ea5t nh\u1eb1m l\u00e0m thay \u0111\u1ed5i vi c\u1ea5u tr\u00fac ch\u1ea5t r\u1eafn, \u0111\u00f4i khi t\u00e1c \u0111\u1ed9ng l\u00e0m thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u. Ch\u1ee7 y\u1ebfu c\u1ee7a \u1ee9ng d\u1ee5ng nhi\u1ec7t luy\u1ec7n l\u00e0 thu\u1ed9c v\u1ec1 ng\u00e0nh luy\u1ec7n kim.\u00a0Nhi\u1ec7t luy\u1ec7n c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, v\u00ed d\u1ee5 nh\u01b0 ng\u00e0nh s\u1ea3n xu\u1ea5t th\u1ee7y tinh.<\/p>\n<p>M\u1ee5c \u0111\u00edch c\u1ee7a nhi\u1ec7t luy\u1ec7n l\u00e0 \u0111\u1ec3 c\u1ea3i thi\u1ec7n c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, \u0111i\u1ec7n h\u00f3a, nhi\u1ec7t h\u1ecdc ho\u1eb7c t\u1eeb t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u. Nhi\u1ec7t luy\u1ec7n c\u00f3 th\u1ec3 l\u00e0m t\u0103ng ho\u1eb7c gi\u1ea3m \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 d\u1ebbo, \u0111\u1ed9 m\u00e0i m\u00f2n, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n ho\u1eb7c kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n<p>M\u1ed9t quy tr\u00ecnh nhi\u1ec7t luy\u1ec7n bao g\u1ed3m ba giai \u0111o\u1ea1n: nung n\u00f3ng, gi\u1eef nhi\u1ec7t v\u00e0 l\u00e0m ngu\u1ed9i. Khi nung n\u00f3ng, t\u1ed5 ch\u1ee9c v\u1eadt li\u1ec7u s\u1ebd thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9, tu\u1ef3 th\u1eddi \u0111i\u1ec3m n\u00e2ng, h\u1ea1 nhi\u1ec7t v\u1edbi c\u00e1c t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau m\u00e0 nhi\u1ec7t luy\u1ec7n v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau s\u1ebd cho ra t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u mong mu\u1ed1n. Khi gi\u1eef nhi\u1ec7t, t\u1ed5 ch\u1ee9c v\u1eadt li\u1ec7u s\u1ebd \u1ed5n \u0111\u1ecbnh ho\u1eb7c bi\u1ebfn \u0111\u1ed5i theo th\u1eddi gian.\u00a0Khi l\u00e0m ngu\u1ed9i, t\u1ed5 ch\u1ee9c v\u1eadt li\u1ec7u s\u1ebd bi\u1ebfn \u0111\u1ed5i theo t\u1ed1c \u0111\u1ed9 v\u00e0 ph\u01b0\u01a1ng th\u1ee9c l\u00e0m ngu\u1ed9i.<\/p>\n<h2 id=\"ftoc-heading-1\" class=\"ftwp-heading\"><span class=\"ez-toc-section\" id=\"Cac_phuong_phap_nhiet_luyen\"><\/span><strong>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t luy\u1ec7n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t luy\u1ec7n kh\u00e1c nhau cho c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u v\u00e0 m\u1ee5c \u0111\u00edch kh\u00e1c nhau. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t luy\u1ec7n th\u00f4ng d\u1ee5ng:<\/p>\n<ul>\n<li><strong>\u1ee6<\/strong>: L\u00e0 qu\u00e1 tr\u00ecnh gia c\u00f4ng kim lo\u1ea1i b\u1eb1ng c\u00e1ch l\u00e0m ngu\u1ed9i ch\u1eadm sau khi \u0111\u01b0\u1ee3c gia nhi\u1ec7t \u1edf m\u1ed9t nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh.\u00a0M\u1ee5c \u0111\u00edch c\u1ee7a \u1ee7 l\u00e0 \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 c\u1ee9ng v\u00e0 t\u0103ng \u0111\u1ed9 d\u1ebbo c\u1ee7a kim lo\u1ea1i, c\u0169ng nh\u01b0 \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c \u1ee9ng su\u1ea5t c\u00f3 trong kim lo\u1ea1i. C\u00f3 hai lo\u1ea1i \u1ee7: \u1ee7 kh\u00f4ng chuy\u1ec3n bi\u1ebfn pha (\u1ee7 \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n nhi\u1ec7t \u0111\u1ed9 t\u1edbi h\u1ea1n) v\u00e0 \u1ee7 c\u00f3 chuy\u1ec3n bi\u1ebfn pha (\u1ee7 \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n nhi\u1ec7t \u0111\u1ed9 t\u1edbi h\u1ea1n).<\/li>\n<li><strong>Th\u01b0\u1eddng h\u00f3a<\/strong>: L\u00e0 qu\u00e1 tr\u00ecnh gia c\u00f4ng kim lo\u1ea1i b\u1eb1ng c\u00e1ch nung n\u00f3ng kim lo\u1ea1i l\u00ean tr\u1ea1ng th\u00e1i austenit (ho\u00e0n to\u00e0n ho\u1eb7c kh\u00f4ng ho\u00e0n to\u00e0n), gi\u1eef nhi\u1ec7t v\u00e0 l\u00e0m ngu\u1ed9i trong kh\u00f4ng kh\u00ed.\u00a0M\u1ee5c \u0111\u00edch c\u1ee7a th\u01b0\u1eddng h\u00f3a l\u00e0 \u0111\u1ec3 l\u00e0m nh\u1ecf h\u1ea1t tinh th\u1ec3, \u0111\u1ed3ng nh\u1ea5t t\u1ed5 ch\u1ee9c, kh\u1eed \u1ee9ng su\u1ea5t v\u00e0 t\u0103ng \u0111\u1ed9 d\u1ebbo c\u1ee7a kim lo\u1ea1i.<\/li>\n<li><strong>T\u00f4i<\/strong>: L\u00e0 qu\u00e1 tr\u00ecnh gia c\u00f4ng kim lo\u1ea1i b\u1eb1ng c\u00e1ch nung n\u00f3ng kim lo\u1ea1i l\u00ean tr\u1ea1ng th\u00e1i austenit, gi\u1eef nhi\u1ec7t v\u00e0 l\u00e0m ngu\u1ed9i \u0111\u1ee7 nhanh \u0111\u1ec3 qu\u00e1 tr\u00ecnh khu\u1ebfch t\u00e1n kh\u00f4ng k\u1ecbp x\u1ea3y ra, k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c kh\u00f4ng c\u00e2n b\u1eb1ng.\u00a0M\u1ee5c \u0111\u00edch c\u1ee7a t\u00f4i l\u00e0 \u0111\u1ec3 t\u0103ng \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a kim lo\u1ea1i. C\u00f3 hai lo\u1ea1i t\u00f4i: t\u00f4i m\u1eb7t ngo\u00e0i (t\u00f4i \u1edf b\u1ec1 m\u1eb7t) v\u00e0 t\u00f4i xuy\u00ean t\u00e2m (t\u00f4i \u1edf c\u1ea3 b\u1ec1 m\u1eb7t v\u00e0 ph\u1ea7n trong).<\/li>\n<li><strong>Ram<\/strong>: L\u00e0 qu\u00e1 tr\u00ecnh gia c\u00f4ng kim lo\u1ea1i b\u1eb1ng c\u00e1ch nung n\u00f3ng kim lo\u1ea1i l\u00ean tr\u1ea1ng th\u00e1i austenit, gi\u1eef nhi\u1ec7t v\u00e0 l\u00e0m ngu\u1ed9i ch\u1eadm \u0111\u1ec3 qu\u00e1 tr\u00ecnh khu\u1ebfch t\u00e1n x\u1ea3y ra, k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c c\u00e2n b\u1eb1ng.\u00a0M\u1ee5c \u0111\u00edch c\u1ee7a ram l\u00e0 \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 c\u1ee9ng v\u00e0 t\u0103ng \u0111\u1ed9 d\u1ebbo c\u1ee7a kim lo\u1ea1i.<\/li>\n<\/ul>\n<p>Ngo\u00e0i ra, c\u00f2n c\u00f3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t luy\u1ec7n k\u1ebft h\u1ee3p, nh\u01b0:<\/p>\n<ul>\n<li><strong>H\u00f3a nhi\u1ec7t luy\u1ec7n<\/strong>: L\u00e0 qu\u00e1 tr\u00ecnh gia c\u00f4ng kim lo\u1ea1i b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p t\u00e1c \u0111\u1ed9ng h\u00f3a h\u1ecdc v\u00e0 nhi\u1ec7t luy\u1ec7n.\u00a0M\u1ee5c \u0111\u00edch c\u1ee7a h\u00f3a nhi\u1ec7t luy\u1ec7n l\u00e0 \u0111\u1ec3 thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc \u1edf b\u1ec1 m\u1eb7t ho\u1eb7c ph\u1ea7n trong c\u1ee7a kim lo\u1ea1i, nh\u1eb1m t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, ch\u1ed1ng m\u00e0i m\u00f2n ho\u1eb7c c\u1ea3i thi\u1ec7n c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c c\u1ee7a kim lo\u1ea1i. C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p h\u00f3a nhi\u1ec7t luy\u1ec7n, nh\u01b0: th\u1ea5m cacbon (cementit), th\u1ea5m nit\u01a1 (nitrit), th\u1ea5m cacbua (carburit),\u2026<\/li>\n<li><strong>C\u01a1 nhi\u1ec7t luy\u1ec7n<\/strong>: L\u00e0 qu\u00e1 tr\u00ecnh gia c\u00f4ng kim lo\u1ea1i b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p bi\u1ebfn d\u1ea1ng d\u1ebbo v\u00e0 nhi\u1ec7t luy\u1ec7n.\u00a0M\u1ee5c \u0111\u00edch c\u1ee7a c\u01a1 nhi\u1ec7t luy\u1ec7n l\u00e0 \u0111\u1ec3 t\u1ea1o ra c\u00e1c bi\u1ebfn d\u1ea1ng v\u0129 m\u00f4 ho\u1eb7c vi m\u00f4 trong t\u1ed5 ch\u1ee9c kim lo\u1ea1i, nh\u1eb1m t\u0103ng \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 b\u1ec1n ho\u1eb7c c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c c\u1ee7a kim lo\u1ea1i. C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p c\u01a1 nhi\u1ec7t luy\u1ec7n, nh\u01b0: r\u00e8n, \u00e9p, cu\u1ed1n, k\u00e9o,\u2026<\/li>\n<\/ul>\n<h2 id=\"ftoc-heading-2\" class=\"ftwp-heading\"><span class=\"ez-toc-section\" id=\"Ung_dung_cua_nhiet_luyen\"><\/span><strong>\u1ee8ng d\u1ee5ng c\u1ee7a nhi\u1ec7t luy\u1ec7n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Nhi\u1ec7t luy\u1ec7n c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, nh\u01b0:<\/p>\n<ul>\n<li><strong>Ng\u00e0nh s\u1ea3n xu\u1ea5t m\u00e1y m\u00f3c<\/strong>: Nhi\u1ec7t luy\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gia c\u00f4ng c\u00e1c chi ti\u1ebft m\u00e1y c\u00f3 y\u00eau c\u1ea7u cao v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i. V\u00ed d\u1ee5: c\u00e1c chi ti\u1ebft m\u00e1y c\u00f4ng c\u1ee5, m\u00e1y m\u00f3c thi\u1ebft b\u1ecb, m\u00e1y m\u00f3c \u00f4 t\u00f4, m\u00e1y bay\u2026<\/li>\n<li><strong>Ng\u00e0nh s\u1ea3n xu\u1ea5t v\u0169 kh\u00ed<\/strong>: Nhi\u1ec7t luy\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gia c\u00f4ng c\u00e1c lo\u1ea1i v\u0169 kh\u00ed c\u00f3 y\u00eau c\u1ea7u cao v\u1ec1 \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t. V\u00ed d\u1ee5: c\u00e1c lo\u1ea1i dao, ki\u1ebfm, r\u00ecu, s\u00fang, \u0111\u1ea1n\u2026<\/li>\n<li><strong>Ng\u00e0nh s\u1ea3n xu\u1ea5t d\u1ee5ng c\u1ee5 c\u1eaft g\u1ecdt<\/strong>: Nhi\u1ec7t luy\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gia c\u00f4ng c\u00e1c lo\u1ea1i d\u1ee5ng c\u1ee5 c\u1eaft g\u1ecdt c\u00f3 y\u00eau c\u1ea7u cao v\u1ec1 \u0111\u1ed9 s\u1eafc b\u00e9n, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n. V\u00ed d\u1ee5: c\u00e1c lo\u1ea1i dao phay, dao ti\u1ec7n, m\u0169i khoan, m\u0169i taro\u2026<\/li>\n<li><strong>Ng\u00e0nh s\u1ea3n xu\u1ea5t th\u1ee7y tinh<\/strong>: Nhi\u1ec7t luy\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gia c\u00f4ng c\u00e1c lo\u1ea1i th\u1ee7y tinh c\u00f3 y\u00eau c\u1ea7u cao v\u1ec1 \u0111\u1ed9 trong su\u1ed1t, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t. V\u00ed d\u1ee5: c\u00e1c lo\u1ea1i k\u00ednh c\u01b0\u1eddng l\u1ef1c, k\u00ednh ch\u1ecbu nhi\u1ec7t, k\u00ednh ch\u1ed1ng x\u01b0\u1edbc\u2026<\/li>\n<\/ul>\n<h2 id=\"ftoc-heading-3\" class=\"ftwp-heading\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span><strong>K\u1ebft lu\u1eadn<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Nhi\u1ec7t luy\u1ec7n l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p quan tr\u1ecdng trong c\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u. Nhi\u1ec7t luy\u1ec7n gi\u00fap t\u1ea1o ra c\u00e1c v\u1eadt li\u1ec7u c\u00f3 c\u00e1c t\u00ednh ch\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p. C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t luy\u1ec7n kh\u00e1c nhau cho c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u v\u00e0 m\u1ee5c \u0111\u00edch kh\u00e1c nhau. \u0110\u1ec3 th\u1ef1c hi\u1ec7n nhi\u1ec7t luy\u1ec7n hi\u1ec7u qu\u1ea3 v\u00e0 an to\u00e0n, b\u1ea1n c\u1ea7n tu\u00e2n th\u1ee7 c\u00e1c quy tr\u00ecnh v\u00e0 quy \u0111\u1ecbnh c\u1ee7a ng\u00e0nh. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n c\u00f3 th\u00eam ki\u1ebfn th\u1ee9c v\u1ec1 nhi\u1ec7t luy\u1ec7n v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nhi\u1ec7t luy\u1ec7n\u00a0l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p t\u00e1c \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 l\u00ean v\u1eadt ch\u1ea5t nh\u1eb1m l\u00e0m thay \u0111\u1ed5i vi c\u1ea5u tr\u00fac ch\u1ea5t r\u1eafn, \u0111\u00f4i khi t\u00e1c \u0111\u1ed9ng l\u00e0m thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u. Ch\u1ee7 y\u1ebfu c\u1ee7a \u1ee9ng d\u1ee5ng nhi\u1ec7t luy\u1ec7n l\u00e0 thu\u1ed9c v\u1ec1 ng\u00e0nh luy\u1ec7n kim.\u00a0Nhi\u1ec7t luy\u1ec7n c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng&#8230;<\/p>\n","protected":false},"author":6,"featured_media":2812,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[185,187,1,188,186,184],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nhi\u1ec7t luy\u1ec7n l\u00e0 g\u00ec? C\u00e1c ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t luy\u1ec7n v\u00e0 \u1ee9ng d\u1ee5ng - Phong V\u0169<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/web.webrt.net\/phongvu\/?p=3086\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nhi\u1ec7t luy\u1ec7n l\u00e0 g\u00ec? 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Ch\u1ee7 y\u1ebfu c\u1ee7a \u1ee9ng d\u1ee5ng nhi\u1ec7t luy\u1ec7n l\u00e0 thu\u1ed9c v\u1ec1 ng\u00e0nh luy\u1ec7n kim.\u00a0Nhi\u1ec7t luy\u1ec7n c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/web.webrt.net\/phongvu\/?p=3086\" \/>\n<meta property=\"og:site_name\" content=\"Phong V\u0169\" \/>\n<meta property=\"article:published_time\" content=\"2023-06-23T10:19:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/web.webrt.net\/phongvu\/wp-content\/uploads\/2023\/06\/gallery_3.png\" \/>\n\t<meta property=\"og:image:width\" content=\"418\" \/>\n\t<meta property=\"og:image:height\" content=\"279\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"phongvu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"phongvu\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/web.webrt.net\/phongvu\/?p=3086\",\"url\":\"https:\/\/web.webrt.net\/phongvu\/?p=3086\",\"name\":\"Nhi\u1ec7t luy\u1ec7n l\u00e0 g\u00ec? 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