{"id":815,"date":"2026-04-07T17:07:00","date_gmt":"2026-04-07T17:07:00","guid":{"rendered":"https:\/\/ninhson-vn.com\/?p=815"},"modified":"2026-04-07T17:07:00","modified_gmt":"2026-04-07T17:07:00","slug":"shot-to-shot-variation-su-bien-doi-khong-deu-giua-cac-shot","status":"publish","type":"post","link":"https:\/\/ninhson-vn.com\/?p=815","title":{"rendered":"HOT TO SHOT VARIATION (S\u1ef0 BI\u1ebeN \u0110\u1ed4I KH\u00d4NG \u0110\u1ec0U GI\u1eeeA C\u00c1C SHOT)"},"content":{"rendered":"<h1 data-section-id=\"13785mj\" data-start=\"305\" data-end=\"413\">SHOT TO SHOT VARIATION (S\u1ef0 BI\u1ebeN \u0110\u1ed4I KH\u00d4NG \u0110\u1ec0U GI\u1eeeA C\u00c1C SHOT)\u00a0<\/h1>\n<h1 data-section-id=\"13785mj\" data-start=\"305\" data-end=\"413\">NGUY\u00caN NH\u00c2N V\u00c0 C\u00c1CH KH\u1eaeC PH\u1ee4C<\/h1>\n<h2 data-section-id=\"1dqf8o8\" data-start=\"415\" data-end=\"450\">1. Shot to Shot Variation l\u00e0 g\u00ec?<\/h2>\n<div class=\"no-scrollbar flex min-h-36 flex-nowrap gap-0.5 overflow-auto sm:gap-1 sm:overflow-hidden xl:min-h-44 mt-1 mb-5 [&amp;:not(:first-child)]:mt-4\">\n<div class=\"border-token-border-default relative w-32 shrink-0 overflow-hidden rounded-xl border-[0.5px] md:shrink max-h-64 sm:w-[calc((100%-0.5rem)\/3)] rounded-s-xl\">\n<div class=\"group\/search-image @container\/search-image relative rounded-[inherit] h-full w-full\">\n<div><img decoding=\"async\" class=\"bg-token-main-surface-tertiary m-0 h-full w-full object-cover\" src=\"https:\/\/isopara.com\/admin_uploads\/allblogimages\/introduction-to-plastic-defects-its-causes-and-solutions-helpful-for-automotive-plastic-part-designing.webp\" alt=\"https:\/\/isopara.com\/admin_uploads\/allblogimages\/introduction-to-plastic-defects-its-causes-and-solutions-helpful-for-automotive-plastic-part-designing.webp\" \/><\/div>\n<\/div>\n<\/div>\n<div class=\"border-token-border-default relative w-32 shrink-0 overflow-hidden rounded-xl border-[0.5px] md:shrink max-h-64 sm:w-[calc((100%-0.5rem)\/3)]\">\n<div class=\"group\/search-image @container\/search-image relative rounded-[inherit] h-full w-full\">\n<div><img decoding=\"async\" class=\"bg-token-main-surface-tertiary m-0 h-full w-full object-cover\" src=\"https:\/\/media.licdn.com\/dms\/image\/v2\/D5612AQGAhlAC_WhjYA\/article-cover_image-shrink_720_1280\/article-cover_image-shrink_720_1280\/0\/1739188799938?e=2147483647&amp;t=LtgSRfpuohywZYtqKcy5cGZYmEsufpfowV8j-VyZpyg&amp;v=beta\" alt=\"https:\/\/media.licdn.com\/dms\/image\/v2\/D5612AQGAhlAC_WhjYA\/article-cover_image-shrink_720_1280\/article-cover_image-shrink_720_1280\/0\/1739188799938?e=2147483647&amp;t=LtgSRfpuohywZYtqKcy5cGZYmEsufpfowV8j-VyZpyg&amp;v=beta\" \/><\/div>\n<\/div>\n<\/div>\n<div class=\"border-token-border-default relative w-32 shrink-0 overflow-hidden rounded-xl border-[0.5px] md:shrink max-h-64 sm:w-[calc((100%-0.5rem)\/3)] rounded-e-xl\">\n<div class=\"group\/search-image @container\/search-image relative rounded-[inherit] h-full w-full\">\n<div><img decoding=\"async\" class=\"bg-token-main-surface-tertiary m-0 h-full w-full object-cover\" src=\"https:\/\/cdn.prod.website-files.com\/603ceb1eb9302d5bc37112cd\/6696cec965476c73b7629ebe_Dimensional-Inspection-Molded-Parts_Main.jpg\" alt=\"https:\/\/cdn.prod.website-files.com\/603ceb1eb9302d5bc37112cd\/6696cec965476c73b7629ebe_Dimensional-Inspection-Molded-Parts_Main.jpg\" \/><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p data-start=\"494\" data-end=\"633\"><strong data-start=\"494\" data-end=\"520\">Shot to Shot Variation<\/strong> l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng <strong data-start=\"535\" data-end=\"598\">ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m thay \u0111\u1ed5i gi\u1eefa c\u00e1c chu k\u1ef3 \u00e9p phun (shot)<\/strong> trong c\u00f9ng m\u1ed9t \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t.<\/p>\n<p data-start=\"635\" data-end=\"747\">N\u00f3i c\u00e1ch kh\u00e1c, d\u00f9 m\u00e1y \u00e9p ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c v\u1edbi c\u00f9ng th\u00f4ng s\u1ed1, nh\u01b0ng <strong data-start=\"704\" data-end=\"746\">c\u00e1c s\u1ea3n ph\u1ea9m t\u1ea1o ra l\u1ea1i kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u<\/strong>.<\/p>\n<p data-start=\"749\" data-end=\"786\">S\u1ef1 bi\u1ebfn \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 bi\u1ec3u hi\u1ec7n qua:<\/p>\n<ul data-start=\"788\" data-end=\"946\">\n<li data-section-id=\"1xspnuy\" data-start=\"788\" data-end=\"827\"><strong data-start=\"790\" data-end=\"827\">K\u00edch th\u01b0\u1edbc s\u1ea3n ph\u1ea9m kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/strong><\/li>\n<li data-section-id=\"1h2a4yf\" data-start=\"828\" data-end=\"863\"><strong data-start=\"830\" data-end=\"863\">Tr\u1ecdng l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m thay \u0111\u1ed5i<\/strong><\/li>\n<li data-section-id=\"1hzzdhw\" data-start=\"864\" data-end=\"895\"><strong data-start=\"866\" data-end=\"895\">B\u1ec1 m\u1eb7t s\u1ea3n ph\u1ea9m kh\u00e1c nhau<\/strong><\/li>\n<li data-section-id=\"1ybkya7\" data-start=\"896\" data-end=\"946\"><strong data-start=\"898\" data-end=\"946\">\u0110\u1ed9 co r\u00fat ho\u1eb7c \u0111\u1ed9 cong v\u00eanh kh\u00f4ng gi\u1ed1ng nhau<\/strong><\/li>\n<\/ul>\n<p data-start=\"948\" data-end=\"1077\">\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng l\u1ed7i nghi\u00eam tr\u1ecdng trong s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t v\u00ec <strong data-start=\"1016\" data-end=\"1076\">\u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a qu\u00e1 tr\u00ecnh \u00e9p nh\u1ef1a<\/strong>.<\/p>\n<hr data-start=\"1079\" data-end=\"1082\" \/>\n<h1 data-section-id=\"hkm532\" data-start=\"1084\" data-end=\"1129\">2. C\u01a1 ch\u1ebf h\u00ecnh th\u00e0nh Shot to Shot Variation<\/h1>\n<div class=\"no-scrollbar flex min-h-36 flex-nowrap gap-0.5 overflow-auto sm:gap-1 sm:overflow-hidden xl:min-h-44 mt-1 mb-5 [&amp;:not(:first-child)]:mt-4\">\n<div class=\"border-token-border-default relative w-32 shrink-0 overflow-hidden rounded-xl border-[0.5px] md:shrink max-h-64 sm:w-[calc((100%-0.5rem)\/3)] rounded-s-xl\">\n<div class=\"group\/search-image @container\/search-image relative rounded-[inherit] h-full w-full\">\n<div><img decoding=\"async\" class=\"bg-token-main-surface-tertiary m-0 h-full w-full object-cover\" src=\"https:\/\/www.researchgate.net\/publication\/371889155\/figure\/fig1\/AS%3A11431281358690737%401744065075700\/The-main-stages-of-injection-molding.tif\" alt=\"https:\/\/www.researchgate.net\/publication\/371889155\/figure\/fig1\/AS%3A11431281358690737%401744065075700\/The-main-stages-of-injection-molding.tif\" \/><\/div>\n<\/div>\n<\/div>\n<div class=\"border-token-border-default relative w-32 shrink-0 overflow-hidden rounded-xl border-[0.5px] md:shrink max-h-64 sm:w-[calc((100%-0.5rem)\/3)]\">\n<div class=\"group\/search-image @container\/search-image relative rounded-[inherit] h-full w-full\">\n<div><img decoding=\"async\" class=\"bg-token-main-surface-tertiary m-0 h-full w-full object-cover\" src=\"https:\/\/d2n4wb9orp1vta.cloudfront.net\/cms\/brand\/PT\/2019-PT\/0919ptkhinjection-fig1.jpg%3BmaxWidth%3D1200\" alt=\"https:\/\/d2n4wb9orp1vta.cloudfront.net\/cms\/brand\/PT\/2019-PT\/0919ptkhinjection-fig1.jpg%3BmaxWidth%3D1200\" \/><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p data-start=\"1173\" data-end=\"1236\">Trong chu k\u1ef3 \u00e9p phun, qu\u00e1 tr\u00ecnh t\u1ea1o h\u00ecnh di\u1ec5n ra theo c\u00e1c b\u01b0\u1edbc:<\/p>\n<ol data-start=\"1238\" data-end=\"1331\">\n<li data-section-id=\"fcjhix\" data-start=\"1238\" data-end=\"1268\"><strong data-start=\"1241\" data-end=\"1266\">Injection (Phun nh\u1ef1a)<\/strong><\/li>\n<li data-section-id=\"i3kkte\" data-start=\"1269\" data-end=\"1303\"><strong data-start=\"1272\" data-end=\"1301\">Holding pressure (Gi\u1eef \u00e1p)<\/strong><\/li>\n<li data-section-id=\"1xrd9x8\" data-start=\"1304\" data-end=\"1331\"><strong data-start=\"1307\" data-end=\"1329\">Cooling (L\u00e0m l\u1ea1nh)<\/strong><\/li>\n<\/ol>\n<p data-start=\"1333\" data-end=\"1429\">Trong giai \u0111o\u1ea1n <strong data-start=\"1349\" data-end=\"1367\">phun v\u00e0 gi\u1eef \u00e1p<\/strong>, \u00e1p l\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 <strong data-start=\"1392\" data-end=\"1428\">\u0111\u1ea9y nh\u1ef1a v\u00e0o cavity v\u00e0 b\u00f9 co r\u00fat<\/strong>.<\/p>\n<p data-start=\"1431\" data-end=\"1588\">N\u1ebfu \u00e1p l\u1ef1c ho\u1eb7c l\u01b0\u1ee3ng nh\u1ef1a \u0111i\u1ec1n \u0111\u1ea7y <strong data-start=\"1467\" data-end=\"1500\">kh\u00f4ng \u1ed5n \u0111\u1ecbnh gi\u1eefa c\u00e1c chu k\u1ef3<\/strong>, l\u01b0\u1ee3ng v\u1eadt li\u1ec7u trong m\u1ed7i shot s\u1ebd thay \u0111\u1ed5i, d\u1eabn \u0111\u1ebfn <strong data-start=\"1553\" data-end=\"1587\">s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c s\u1ea3n ph\u1ea9m<\/strong>.<\/p>\n<hr data-start=\"1590\" data-end=\"1593\" \/>\n<h1 data-section-id=\"1wthcdx\" data-start=\"1595\" data-end=\"1641\">3. Nguy\u00ean nh\u00e2n g\u00e2y ra Shot to Shot Variation<\/h1>\n<h2 data-section-id=\"d7hz4v\" data-start=\"1643\" data-end=\"1706\">3.1 Thi\u1ebfu \u00e1p l\u1ef1c trong qu\u00e1 tr\u00ecnh \u00e9p phun (Pressure Shortage)<\/h2>\n<p data-start=\"1708\" data-end=\"1759\">\u0110\u00e2y l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y bi\u1ebfn \u0111\u1ed9ng s\u1ea3n ph\u1ea9m.<\/p>\n<p data-start=\"1761\" data-end=\"1890\">N\u1ebfu \u00e1p l\u1ef1c trong qu\u00e1 tr\u00ecnh phun v\u00e0 gi\u1eef \u00e1p <strong data-start=\"1803\" data-end=\"1834\">kh\u00f4ng \u0111\u1ee7 ho\u1eb7c kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/strong>, l\u01b0\u1ee3ng nh\u1ef1a \u0111i\u1ec1n \u0111\u1ea7y cavity s\u1ebd thay \u0111\u1ed5i theo t\u1eebng shot.<\/p>\n<p data-start=\"1892\" data-end=\"1919\">C\u00e1c nguy\u00ean nh\u00e2n c\u1ee5 th\u1ec3 g\u1ed3m:<\/p>\n<ul data-start=\"1921\" data-end=\"2084\">\n<li data-section-id=\"khj3q0\" data-start=\"1921\" data-end=\"1941\">\u00c1p l\u1ef1c nh\u1ef1a th\u1ea5p<\/li>\n<li data-section-id=\"6v33s3\" data-start=\"1942\" data-end=\"1964\">Nhi\u1ec7t \u0111\u1ed9 nh\u1ef1a th\u1ea5p<\/li>\n<li data-section-id=\"16zmvam\" data-start=\"1965\" data-end=\"1985\">T\u1ed1c \u0111\u1ed9 phun ch\u1eadm<\/li>\n<li data-section-id=\"kvgnxr\" data-start=\"1986\" data-end=\"2005\">\u00c1p l\u1ef1c gi\u1eef th\u1ea5p<\/li>\n<li data-section-id=\"734z21\" data-start=\"2006\" data-end=\"2031\">Th\u1eddi gian gi\u1eef \u00e1p ng\u1eafn<\/li>\n<li data-section-id=\"vq30p1\" data-start=\"2032\" data-end=\"2084\">Chuy\u1ec3n \u0111\u1ed5i <strong data-start=\"2045\" data-end=\"2074\">V-P (Velocity \u2192 Pressure)<\/strong> qu\u00e1 s\u1edbm<\/li>\n<\/ul>\n<p data-start=\"2086\" data-end=\"2156\">Ngo\u00e0i ra, h\u1ec7 th\u1ed1ng d\u1eabn nh\u1ef1a c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng truy\u1ec1n \u00e1p l\u1ef1c.<\/p>\n<p data-start=\"2158\" data-end=\"2162\">N\u1ebfu:<\/p>\n<ul data-start=\"2164\" data-end=\"2215\">\n<li data-section-id=\"yxbqw0\" data-start=\"2164\" data-end=\"2179\"><strong data-start=\"2166\" data-end=\"2179\">Sprue nh\u1ecf<\/strong><\/li>\n<li data-section-id=\"5ricux\" data-start=\"2180\" data-end=\"2196\"><strong data-start=\"2182\" data-end=\"2196\">Runner h\u1eb9p<\/strong><\/li>\n<li data-section-id=\"1fgqek3\" data-start=\"2197\" data-end=\"2215\"><strong data-start=\"2199\" data-end=\"2215\">Gate qu\u00e1 nh\u1ecf<\/strong><\/li>\n<\/ul>\n<p data-start=\"2217\" data-end=\"2263\">th\u00ec \u00e1p l\u1ef1c truy\u1ec1n \u0111\u1ebfn cavity s\u1ebd kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/p>\n<hr data-start=\"2265\" data-end=\"2268\" \/>\n<h2 data-section-id=\"12dc5ae\" data-start=\"2270\" data-end=\"2302\">3.2 \u0110\u1ed9 ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u th\u1ea5p<\/h2>\n<p data-start=\"2304\" data-end=\"2432\">M\u1ed9t s\u1ed1 lo\u1ea1i nh\u1ef1a c\u00f3 <strong data-start=\"2324\" data-end=\"2357\">\u0111\u1ed9 ch\u1ea3y k\u00e9m (low flowability)<\/strong> s\u1ebd g\u00e2y t\u1ed5n th\u1ea5t \u00e1p l\u1ef1c l\u1edbn khi d\u00f2ng nh\u1ef1a di chuy\u1ec3n trong runner v\u00e0 cavity.<\/p>\n<p data-start=\"2434\" data-end=\"2500\">\u0110i\u1ec1u n\u00e0y l\u00e0m <strong data-start=\"2447\" data-end=\"2499\">l\u01b0\u1ee3ng nh\u1ef1a \u0111i\u1ec1n \u0111\u1ea7y kh\u00e1c nhau gi\u1eefa c\u00e1c chu k\u1ef3 \u00e9p<\/strong>.<\/p>\n<hr data-start=\"2502\" data-end=\"2505\" \/>\n<h2 data-section-id=\"ri8s99\" data-start=\"2507\" data-end=\"2547\">3.3 Thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m c\u00f3 v\u00f9ng qu\u00e1 d\u00e0y<\/h2>\n<p data-start=\"2549\" data-end=\"2641\">Khi s\u1ea3n ph\u1ea9m c\u00f3 <strong data-start=\"2565\" data-end=\"2584\">khu v\u1ef1c qu\u00e1 d\u00e0y<\/strong>, l\u01b0\u1ee3ng nh\u1ef1a c\u1ea7n \u0111\u1ec3 \u0111i\u1ec1n \u0111\u1ea7y s\u1ebd l\u1edbn h\u01a1n v\u00e0 kh\u00f3 ki\u1ec3m so\u00e1t.<\/p>\n<p data-start=\"2643\" data-end=\"2654\">K\u1ebft qu\u1ea3 l\u00e0:<\/p>\n<ul data-start=\"2656\" data-end=\"2728\">\n<li data-section-id=\"o6ssbf\" data-start=\"2656\" data-end=\"2682\">\u00c1p l\u1ef1c ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ec1u<\/li>\n<li data-section-id=\"evwqfq\" data-start=\"2683\" data-end=\"2728\">Tr\u1ecdng l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m thay \u0111\u1ed5i gi\u1eefa c\u00e1c shot<\/li>\n<\/ul>\n<hr data-start=\"2730\" data-end=\"2733\" \/>\n<h2 data-section-id=\"1lukwnc\" data-start=\"2735\" data-end=\"2780\">3.4 Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 khu\u00f4n kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/h2>\n<p data-start=\"2782\" data-end=\"2821\">Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn:<\/p>\n<ul data-start=\"2823\" data-end=\"2874\">\n<li data-section-id=\"d4vby4\" data-start=\"2823\" data-end=\"2849\">T\u1ed1c \u0111\u1ed9 \u0111\u00f4ng \u0111\u1eb7c c\u1ee7a nh\u1ef1a<\/li>\n<li data-section-id=\"h4gqxi\" data-start=\"2850\" data-end=\"2874\">\u0110\u1ed9 co r\u00fat c\u1ee7a s\u1ea3n ph\u1ea9m<\/li>\n<\/ul>\n<p data-start=\"2876\" data-end=\"2964\">N\u1ebfu h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t kh\u00f4ng \u1ed5n \u0111\u1ecbnh, nhi\u1ec7t \u0111\u1ed9 khu\u00f4n s\u1ebd thay \u0111\u1ed5i gi\u1eefa c\u00e1c chu k\u1ef3, d\u1eabn \u0111\u1ebfn:<\/p>\n<ul data-start=\"2966\" data-end=\"3041\">\n<li data-section-id=\"d0boxv\" data-start=\"2966\" data-end=\"3002\">K\u00edch th\u01b0\u1edbc s\u1ea3n ph\u1ea9m kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u<\/li>\n<li data-section-id=\"7gpci8\" data-start=\"3003\" data-end=\"3041\">S\u1ef1 bi\u1ebfn \u0111\u1ed5i ch\u1ea5t l\u01b0\u1ee3ng gi\u1eefa c\u00e1c shot<\/li>\n<\/ul>\n<p data-start=\"3043\" data-end=\"3081\">C\u00e1c v\u1ecb tr\u00ed kh\u00f3 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 g\u1ed3m:<\/p>\n<ul data-start=\"3083\" data-end=\"3138\">\n<li data-section-id=\"8z685g\" data-start=\"3083\" data-end=\"3097\"><strong data-start=\"3085\" data-end=\"3097\">Core pin<\/strong><\/li>\n<li data-section-id=\"seu96e\" data-start=\"3098\" data-end=\"3114\"><strong data-start=\"3100\" data-end=\"3114\">Insert nh\u1ecf<\/strong><\/li>\n<li data-section-id=\"1rekf1\" data-start=\"3115\" data-end=\"3138\"><strong data-start=\"3117\" data-end=\"3138\">Khu v\u1ef1c th\u00e0nh d\u00e0y<\/strong><\/li>\n<\/ul>\n<hr data-start=\"3140\" data-end=\"3143\" \/>\n<h2 data-section-id=\"1vcdjd4\" data-start=\"3145\" data-end=\"3204\">3.5 Qu\u00e1 tr\u00ecnh n\u1ea1p nh\u1ef1a kh\u00f4ng \u1ed5n \u0111\u1ecbnh (Unstable Metering)<\/h2>\n<p data-start=\"3206\" data-end=\"3311\">N\u1ebfu qu\u00e1 tr\u00ecnh <strong data-start=\"3220\" data-end=\"3259\">n\u1ea1p nh\u1ef1a trong barrel kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/strong>, l\u01b0\u1ee3ng nh\u1ef1a \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb cho m\u1ed7i shot s\u1ebd thay \u0111\u1ed5i.<\/p>\n<p data-start=\"3313\" data-end=\"3335\">Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 do:<\/p>\n<ul data-start=\"3337\" data-end=\"3436\">\n<li data-section-id=\"1b9glnw\" data-start=\"3337\" data-end=\"3375\">T\u1ed1c \u0111\u1ed9 quay tr\u1ee5c v\u00edt kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/li>\n<li data-section-id=\"1hj088y\" data-start=\"3376\" data-end=\"3407\">Back pressure kh\u00f4ng ph\u00f9 h\u1ee3p<\/li>\n<li data-section-id=\"187tfrz\" data-start=\"3408\" data-end=\"3436\">Nhi\u1ec7t \u0111\u1ed9 barrel thay \u0111\u1ed5i<\/li>\n<\/ul>\n<p data-start=\"3438\" data-end=\"3487\">\u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn <strong data-start=\"3455\" data-end=\"3486\">shot size thay \u0111\u1ed5i li\u00ean t\u1ee5c<\/strong>.<\/p>\n<hr data-start=\"3489\" data-end=\"3492\" \/>\n<h2 data-section-id=\"iusyb2\" data-start=\"3494\" data-end=\"3529\">3.6 H\u1ec7 th\u1ed1ng tho\u00e1t kh\u00ed khu\u00f4n k\u00e9m<\/h2>\n<p data-start=\"3531\" data-end=\"3616\">N\u1ebfu <strong data-start=\"3535\" data-end=\"3560\">r\u00e3nh tho\u00e1t kh\u00ed (vent)<\/strong> kh\u00f4ng hi\u1ec7u qu\u1ea3, kh\u00ed b\u1ecb gi\u1eef l\u1ea1i trong cavity c\u00f3 th\u1ec3 l\u00e0m:<\/p>\n<ul data-start=\"3618\" data-end=\"3686\">\n<li data-section-id=\"5b9kbk\" data-start=\"3618\" data-end=\"3654\">D\u00f2ng nh\u1ef1a \u0111i\u1ec1n \u0111\u1ea7y kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/li>\n<li data-section-id=\"13bgide\" data-start=\"3655\" data-end=\"3686\">\u00c1p l\u1ef1c trong khu\u00f4n thay \u0111\u1ed5i<\/li>\n<\/ul>\n<p data-start=\"3688\" data-end=\"3769\">K\u1ebft qu\u1ea3 l\u00e0 s\u1ea3n ph\u1ea9m gi\u1eefa c\u00e1c shot c\u00f3 th\u1ec3 <strong data-start=\"3729\" data-end=\"3768\">kh\u00e1c nhau v\u1ec1 k\u00edch th\u01b0\u1edbc ho\u1eb7c b\u1ec1 m\u1eb7t<\/strong>.<\/p>\n<hr data-start=\"3771\" data-end=\"3774\" \/>\n<h1 data-section-id=\"1w666qy\" data-start=\"3776\" data-end=\"3823\">4. Gi\u1ea3i ph\u00e1p kh\u1eafc ph\u1ee5c Shot to Shot Variation<\/h1>\n<h2 data-section-id=\"pjyoxu\" data-start=\"3825\" data-end=\"3868\">4.1 T\u1ed1i \u01b0u \u00e1p l\u1ef1c gi\u1eef (Holding Pressure)<\/h2>\n<p data-start=\"3870\" data-end=\"3928\">\u00c1p l\u1ef1c gi\u1eef ph\u1ea3i \u0111\u1ee7 \u0111\u1ec3 <strong data-start=\"3892\" data-end=\"3927\">b\u00f9 co r\u00fat c\u1ee7a nh\u1ef1a trong cavity<\/strong>.<\/p>\n<p data-start=\"3930\" data-end=\"3957\">C\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n b\u1eb1ng c\u00e1ch:<\/p>\n<ul data-start=\"3959\" data-end=\"4124\">\n<li data-section-id=\"1r2czsk\" data-start=\"3959\" data-end=\"3983\">T\u0103ng <strong data-start=\"3966\" data-end=\"3983\">nhi\u1ec7t \u0111\u1ed9 nh\u1ef1a<\/strong><\/li>\n<li data-section-id=\"skwdym\" data-start=\"3984\" data-end=\"4009\">T\u0103ng <strong data-start=\"3991\" data-end=\"4009\">nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/strong><\/li>\n<li data-section-id=\"od4zzv\" data-start=\"4010\" data-end=\"4032\">T\u0103ng <strong data-start=\"4017\" data-end=\"4032\">t\u1ed1c \u0111\u1ed9 phun<\/strong><\/li>\n<li data-section-id=\"f0nyns\" data-start=\"4033\" data-end=\"4054\">T\u0103ng <strong data-start=\"4040\" data-end=\"4054\">\u00e1p l\u1ef1c gi\u1eef<\/strong><\/li>\n<li data-section-id=\"10cxkhd\" data-start=\"4055\" data-end=\"4085\">K\u00e9o d\u00e0i <strong data-start=\"4065\" data-end=\"4085\">th\u1eddi gian gi\u1eef \u00e1p<\/strong><\/li>\n<li data-section-id=\"1fv5nu7\" data-start=\"4086\" data-end=\"4124\">Tr\u00ec ho\u00e3n th\u1eddi \u0111i\u1ec3m <strong data-start=\"4107\" data-end=\"4124\">V-P switching<\/strong><\/li>\n<\/ul>\n<hr data-start=\"4126\" data-end=\"4129\" \/>\n<h2 data-section-id=\"11zgbgy\" data-start=\"4131\" data-end=\"4170\">4.2 C\u1ea3i ti\u1ebfn h\u1ec7 th\u1ed1ng runner v\u00e0 gate<\/h2>\n<p data-start=\"4172\" data-end=\"4201\">\u0110\u1ec3 truy\u1ec1n \u00e1p l\u1ef1c \u1ed5n \u0111\u1ecbnh c\u1ea7n:<\/p>\n<ul data-start=\"4203\" data-end=\"4269\">\n<li data-section-id=\"1n7tiih\" data-start=\"4203\" data-end=\"4222\">M\u1edf r\u1ed9ng <strong data-start=\"4213\" data-end=\"4222\">sprue<\/strong><\/li>\n<li data-section-id=\"3624jj\" data-start=\"4223\" data-end=\"4251\">T\u0103ng k\u00edch th\u01b0\u1edbc <strong data-start=\"4241\" data-end=\"4251\">runner<\/strong><\/li>\n<li data-section-id=\"3dl77a\" data-start=\"4252\" data-end=\"4269\">T\u1ed1i \u01b0u <strong data-start=\"4261\" data-end=\"4269\">gate<\/strong><\/li>\n<\/ul>\n<p data-start=\"4271\" data-end=\"4338\">Ngo\u00e0i ra, s\u1ea3n ph\u1ea9m n\u00ean \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf <strong data-start=\"4308\" data-end=\"4337\">\u0111\u1ed9 d\u00e0y t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u<\/strong>.<\/p>\n<p data-start=\"4340\" data-end=\"4365\">\u0110\u1ed9 d\u00e0y ti\u00eau chu\u1ea9n th\u01b0\u1eddng:<\/p>\n<p data-start=\"4367\" data-end=\"4417\"><strong data-start=\"4367\" data-end=\"4379\">2 \u2013 4 mm<\/strong> \u0111\u1ed1i v\u1edbi nhi\u1ec1u s\u1ea3n ph\u1ea9m nh\u1ef1a k\u1ef9 thu\u1eadt.<\/p>\n<hr data-start=\"4419\" data-end=\"4422\" \/>\n<h2 data-section-id=\"769oly\" data-start=\"4424\" data-end=\"4463\">4.3 Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 khu\u00f4n \u1ed5n \u0111\u1ecbnh<\/h2>\n<p data-start=\"4465\" data-end=\"4474\">Ki\u1ec3m tra:<\/p>\n<ul data-start=\"4476\" data-end=\"4599\">\n<li data-section-id=\"mz0ouh\" data-start=\"4476\" data-end=\"4509\">H\u1ec7 th\u1ed1ng <strong data-start=\"4487\" data-end=\"4509\">\u0111\u01b0\u1eddng n\u01b0\u1edbc l\u00e0m m\u00e1t<\/strong><\/li>\n<li data-section-id=\"52y3fo\" data-start=\"4510\" data-end=\"4557\">Kho\u1ea3ng c\u00e1ch t\u1eeb <strong data-start=\"4527\" data-end=\"4557\">cooling channel \u0111\u1ebfn cavity<\/strong><\/li>\n<li data-section-id=\"1wwer3f\" data-start=\"4558\" data-end=\"4599\">V\u1ecb tr\u00ed <strong data-start=\"4567\" data-end=\"4599\">heater (n\u1ebfu khu\u00f4n gia nhi\u1ec7t)<\/strong><\/li>\n<\/ul>\n<p data-start=\"4601\" data-end=\"4637\">\u0110\u1eb7c bi\u1ec7t c\u1ea7n ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 t\u1ea1i:<\/p>\n<ul data-start=\"4639\" data-end=\"4685\">\n<li data-section-id=\"1rxkfd0\" data-start=\"4639\" data-end=\"4649\">Core pin<\/li>\n<li data-section-id=\"15lekmu\" data-start=\"4650\" data-end=\"4662\">Insert nh\u1ecf<\/li>\n<li data-section-id=\"2a631\" data-start=\"4663\" data-end=\"4685\">Khu v\u1ef1c c\u00f3 th\u00e0nh d\u00e0y<\/li>\n<\/ul>\n<hr data-start=\"4687\" data-end=\"4690\" \/>\n<h2 data-section-id=\"1pj4h71\" data-start=\"4692\" data-end=\"4725\">4.4 \u1ed4n \u0111\u1ecbnh qu\u00e1 tr\u00ecnh n\u1ea1p nh\u1ef1a<\/h2>\n<p data-start=\"4727\" data-end=\"4755\">M\u1ed9t s\u1ed1 \u0111i\u1ec1u ch\u1ec9nh c\u1ea7n thi\u1ebft:<\/p>\n<ul data-start=\"4757\" data-end=\"4847\">\n<li data-section-id=\"1lw9dh8\" data-start=\"4757\" data-end=\"4790\">T\u1ed1i \u01b0u <strong data-start=\"4766\" data-end=\"4790\">t\u1ed1c \u0111\u1ed9 quay tr\u1ee5c v\u00edt<\/strong><\/li>\n<li data-section-id=\"1leuvu7\" data-start=\"4791\" data-end=\"4821\">\u0110i\u1ec1u ch\u1ec9nh <strong data-start=\"4804\" data-end=\"4821\">back pressure<\/strong><\/li>\n<li data-section-id=\"1d97cq0\" data-start=\"4822\" data-end=\"4847\">Ki\u1ec3m so\u00e1t <strong data-start=\"4834\" data-end=\"4847\">shot size<\/strong><\/li>\n<\/ul>\n<p data-start=\"4849\" data-end=\"4913\">\u0110i\u1ec1u n\u00e0y gi\u00fap l\u01b0\u1ee3ng nh\u1ef1a chu\u1ea9n b\u1ecb cho m\u1ed7i shot <strong data-start=\"4896\" data-end=\"4912\">lu\u00f4n \u1ed5n \u0111\u1ecbnh<\/strong>.<\/p>\n<hr data-start=\"4915\" data-end=\"4918\" \/>\n<h2 data-section-id=\"p9taos\" data-start=\"4920\" data-end=\"4955\">4.5 C\u1ea3i thi\u1ec7n h\u1ec7 th\u1ed1ng tho\u00e1t kh\u00ed<\/h2>\n<p data-start=\"4957\" data-end=\"4985\">N\u1ebfu khu\u00f4n tho\u00e1t kh\u00ed k\u00e9m c\u1ea7n:<\/p>\n<ul data-start=\"4987\" data-end=\"5062\">\n<li data-section-id=\"ew8gco\" data-start=\"4987\" data-end=\"5007\">T\u0103ng <strong data-start=\"4994\" data-end=\"5007\">r\u00e3nh vent<\/strong><\/li>\n<li data-section-id=\"we0xnz\" data-start=\"5008\" data-end=\"5033\">L\u00e0m s\u1ea1ch r\u00e3nh tho\u00e1t kh\u00ed<\/li>\n<li data-section-id=\"hpmc6k\" data-start=\"5034\" data-end=\"5062\">\u0110i\u1ec1u ch\u1ec9nh <strong data-start=\"5047\" data-end=\"5062\">t\u1ed1c \u0111\u1ed9 phun<\/strong><\/li>\n<\/ul>\n<p data-start=\"5064\" data-end=\"5113\">Vent t\u1ed1t gi\u00fap <strong data-start=\"5078\" data-end=\"5112\">d\u00f2ng nh\u1ef1a \u0111i\u1ec1n \u0111\u1ea7y \u1ed5n \u0111\u1ecbnh h\u01a1n<\/strong>.<\/p>\n<hr data-start=\"5115\" data-end=\"5118\" \/>\n<h1 data-section-id=\"l1q147\" data-start=\"5120\" data-end=\"5133\">5. K\u1ebft lu\u1eadn<\/h1>\n<p data-start=\"5135\" data-end=\"5279\"><strong data-start=\"5135\" data-end=\"5161\">Shot to Shot Variation<\/strong> l\u00e0 l\u1ed7i x\u1ea3y ra khi <strong data-start=\"5180\" data-end=\"5236\">ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m thay \u0111\u1ed5i gi\u1eefa c\u00e1c chu k\u1ef3 \u00e9p phun<\/strong>, g\u00e2y m\u1ea5t \u1ed5n \u0111\u1ecbnh trong s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/p>\n<p data-start=\"5281\" data-end=\"5307\">Nguy\u00ean nh\u00e2n ch\u00ednh bao g\u1ed3m:<\/p>\n<ul data-start=\"5309\" data-end=\"5479\">\n<li data-section-id=\"1dfw0h6\" data-start=\"5309\" data-end=\"5345\">\u00c1p l\u1ef1c phun v\u00e0 gi\u1eef kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/li>\n<li data-section-id=\"10z70pm\" data-start=\"5346\" data-end=\"5378\">Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 khu\u00f4n k\u00e9m<\/li>\n<li data-section-id=\"1p7hoq9\" data-start=\"5379\" data-end=\"5415\">Qu\u00e1 tr\u00ecnh n\u1ea1p nh\u1ef1a kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/li>\n<li data-section-id=\"ykkgv5\" data-start=\"5416\" data-end=\"5455\">H\u1ec7 th\u1ed1ng runner v\u00e0 gate ch\u01b0a t\u1ed1i \u01b0u<\/li>\n<li data-section-id=\"ebfbz7\" data-start=\"5456\" data-end=\"5479\">Tho\u00e1t kh\u00ed khu\u00f4n k\u00e9m<\/li>\n<\/ul>\n<p data-start=\"5481\" data-end=\"5599\">\u0110\u1ec3 kh\u1eafc ph\u1ee5c hi\u1ec7u qu\u1ea3 c\u1ea7n <strong data-start=\"5507\" data-end=\"5598\">t\u1ed1i \u01b0u th\u00f4ng s\u1ed1 m\u00e1y \u00e9p, c\u1ea3i ti\u1ebfn thi\u1ebft k\u1ebf khu\u00f4n v\u00e0 ki\u1ec3m so\u00e1t \u1ed5n \u0111\u1ecbnh qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t<\/strong>.<\/p>\n<p data-start=\"5025\" data-end=\"5136\"><span style=\"color: #d83131\"><strong><a style=\"color: #d83131\" href=\"https:\/\/ninhson-vn.com\/?p=772\">Click \u0111\u1ec3 tham kh\u1ea3o th\u00eam L\u1ed7i Loang m\u00e0u tr\u00ean s\u1ea3n ph\u1ea9m nh\u1ef1a<\/a><\/strong><\/span><\/p>\n<p data-start=\"5025\" data-end=\"5136\"><span style=\"color: #d83131\"><strong><a style=\"color: #d83131\" href=\"https:\/\/www.tan-star.com\/\">Click \u0111\u00ear tham kh\u1ea3o th\u00eam Xilanh tr\u1ee5c v\u00edt Tanstar cho m\u00e1y \u00e9p nh\u1ef1a<\/a><\/strong><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SHOT TO SHOT VARIATION (S\u1ef0 BI\u1ebeN \u0110\u1ed4I KH\u00d4NG \u0110\u1ec0U GI\u1eeeA C\u00c1C SHOT)\u00a0 NGUY\u00caN NH\u00c2N V\u00c0 C\u00c1CH KH\u1eaeC PH\u1ee4C 1. Shot to Shot Variation l\u00e0 g\u00ec? Shot to Shot Variation l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m thay \u0111\u1ed5i gi\u1eefa c\u00e1c chu k\u1ef3 \u00e9p phun (shot) trong c\u00f9ng m\u1ed9t \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t. N\u00f3i c\u00e1ch kh\u00e1c,&#8230;.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-815","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.2 (Yoast SEO v25.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>HOT TO SHOT VARIATION (S\u1ef0 BI\u1ebeN \u0110\u1ed4I KH\u00d4NG \u0110\u1ec0U GI\u1eeeA C\u00c1C SHOT) - C\u00d4NG TY TNHH TH\u01af\u01a0NG M\u1ea0I D\u1ecaCH V\u1ee4 V\u00c0 S\u1ea2N PH\u1ea8M NINH S\u01a0N<\/title>\n<meta name=\"description\" content=\"Shot to Shot Variation l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m thay \u0111\u1ed5i gi\u1eefa c\u00e1c chu k\u1ef3 \u00e9p phun (shot) trong c\u00f9ng m\u1ed9t \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HOT TO SHOT VARIATION (S\u1ef0 BI\u1ebeN \u0110\u1ed4I KH\u00d4NG \u0110\u1ec0U GI\u1eeeA C\u00c1C SHOT)\" \/>\n<meta property=\"og:description\" content=\"Shot to Shot Variation l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m thay \u0111\u1ed5i gi\u1eefa c\u00e1c chu k\u1ef3 \u00e9p phun (shot) trong c\u00f9ng m\u1ed9t \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ninhson-vn.com\/?p=815\" \/>\n<meta property=\"og:site_name\" content=\"C\u00d4NG TY TNHH TH\u01af\u01a0NG M\u1ea0I D\u1ecaCH V\u1ee4 V\u00c0 S\u1ea2N PH\u1ea8M NINH S\u01a0N\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-07T17:07:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ninhson-vn.com\/wp-content\/uploads\/Short-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1438\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\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=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/ninhson-vn.com\/?p=815\",\"url\":\"https:\/\/ninhson-vn.com\/?p=815\",\"name\":\"HOT TO SHOT VARIATION (S\u1ef0 BI\u1ebeN \u0110\u1ed4I KH\u00d4NG \u0110\u1ec0U GI\u1eeeA C\u00c1C SHOT) - 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