{"id":4086,"date":"2025-01-21T11:50:41","date_gmt":"2025-01-21T03:50:41","guid":{"rendered":"https:\/\/www.oc-epc.com\/?p=4086"},"modified":"2025-01-20T16:43:36","modified_gmt":"2025-01-20T08:43:36","slug":"quy-trinh-duc-bot-bi-mat-yeu-cau-thong-so-ky-thuat-chinh-va-bien-phap-phong-ngua-an-toan","status":"publish","type":"post","link":"https:\/\/www.oc-epc.com\/vi\/news-blog\/industry-news\/lost-foam-casting-process-key-specifications-requirements-and-safety-precautions\/","title":{"rendered":"Qu\u00e1 tr\u00ecnh \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t: Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh, y\u00eau c\u1ea7u v\u00e0 bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba an to\u00e0n"},"content":{"rendered":"<p>Lost Boam Casting (EPC), c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u00fac \u0111\u1ea7y \u0111\u1ee7, l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh \u0111\u00fac s\u1eed d\u1ee5ng m\u1eabu b\u1ecdt c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra c\u00e1c v\u1eadt \u0111\u00fac ph\u1ee9c t\u1ea1p v\u00e0 g\u1ea7n n-net.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, y\u00eau c\u1ea7u v\u00e0 bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba an to\u00e0n ch\u00ednh cho qu\u00e1 tr\u00ecnh \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t:<\/p>\n<h2><strong>I. Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 y\u00eau c\u1ea7u ch\u00ednh<\/strong><\/h2>\n<h3><strong>1. V\u1eadt li\u1ec7u v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng m\u1eabu:<\/strong><\/h3>\n<ul>\n<li>Polystyrene (EPS) l\u00e0 v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn nh\u1ea5t cho c\u00e1c m\u1eabu b\u1ecdt do chi ph\u00ed th\u1ea5p, d\u1ec5 x\u1eed l\u00fd v\u00e0 h\u00f3a h\u01a1i ho\u00e0n to\u00e0n trong qu\u00e1 tr\u00ecnh \u0111\u1ed5.<\/li>\n<li>C\u00e1c v\u1eadt li\u1ec7u b\u1ecdt kh\u00e1c nh\u01b0 STMMA (styrene-methyl methacrylate copolyme) ho\u1eb7c EPMMA (ethylene-propylene-methyl methacrylate terpolyme) c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/li>\n<li>Ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e1c m\u1eabu b\u1ecdt \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u00fac v\u00e0 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t.<\/li>\n<\/ul>\n<h3>2.\u00a0<a href=\"https:\/\/www.oc-epc.com\/vi\/danh-muc-san-pham\/may-tron-son-loai-thang-may\/\"><strong><u>H\u1ec7 th\u1ed1ng l\u1edbp ph\u1ee7<\/u><\/strong><\/a><strong>:<\/strong><\/h3>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-4088 aligncenter\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2025\/01\/Lost-Foam-Casting-Process-2-300x220.webp\" alt=\"Lost Boam Casting Process 2\" width=\"659\" height=\"483\" srcset=\"\" sizes=\"(max-width: 659px) 100vw, 659px\" data-srcset=\"\" \/><\/p>\n<p>L\u1edbp ph\u1ee7 ch\u1ecbu l\u1eeda r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t khi ch\u00fang:<\/p>\n<p style=\"padding-left: 40px;\">H\u1ed7 tr\u1ee3 v\u00e0 b\u1ea3o v\u1ec7 m\u1eabu b\u1ecdt.<\/p>\n<p style=\"padding-left: 40px;\">Ng\u0103n ng\u1eeba x\u00e2m nh\u1eadp kim lo\u1ea1i n\u00f3ng ch\u1ea3y v\u00e0o c\u00e1t, ng\u0103n ch\u1eb7n s\u1ef1 k\u1ebft d\u00ednh c\u1ee7a c\u00e1t.<\/p>\n<p style=\"padding-left: 40px;\">T\u1ea1o \u0111i\u1ec1u ki\u1ec7n tho\u00e1t tr\u01a1n tru c\u1ee7a kh\u00ed ph\u00e2n h\u1ee7y.<\/p>\n<p style=\"padding-left: 40px;\">Duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a khoang khu\u00f4n.<\/p>\n<p>C\u00e1c thu\u1ed9c t\u00ednh l\u1edbp ph\u1ee7 r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u00fac th\u00e0nh c\u00f4ng bao g\u1ed3m:<\/p>\n<p style=\"padding-left: 40px;\">S\u1ee9c m\u1ea1nh cao v\u00e0 \u0111\u1ed9 c\u1ee9ng.<\/p>\n<p style=\"padding-left: 40px;\">Kh\u1ea3 n\u0103ng kh\u00fac x\u1ea1 cao.<\/p>\n<p style=\"padding-left: 40px;\">T\u00ednh th\u1ea5m tuy\u1ec7t v\u1eddi.<\/p>\n<p style=\"padding-left: 40px;\">\u0110\u1ed9 b\u00e1m d\u00ednh m\u1ea1nh m\u1ebd.<\/p>\n<p style=\"padding-left: 40px;\">Kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng t\u1ed1t.<\/p>\n<p style=\"padding-left: 40px;\">Thi\u00eau k\u1ebft t\u1ed1t v\u00e0 g\u1ecdt v\u1ecf.<\/p>\n<p>C\u00e1c v\u1eadt li\u1ec7u ch\u1ecbu l\u1eeda ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u1edbp ph\u1ee7 \u0111\u00fac x\u1ed1p b\u1ecb m\u1ea5t bao g\u1ed3m:<\/p>\n<p style=\"padding-left: 40px;\"><strong>Zirconium silicat:<\/strong>\u00a0Cung c\u1ea5p kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y cao v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh ch\u1ed1ng c\u00e1t tuy\u1ec7t v\u1eddi, ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u00fac th\u00e9p v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn gang l\u1edbn.<\/p>\n<p style=\"padding-left: 40px;\"><strong>B\u1ed9t th\u1ea1ch anh:<\/strong>\u00a0th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00fac c\u00e1c b\u1ed9 ph\u1eadn nh\u1ecf, nh\u00f4m v\u00e0 \u0111\u1ed3ng.<\/p>\n<p style=\"padding-left: 40px;\"><strong>Alumina:<\/strong>\u00a0M\u1ed9t v\u1eadt li\u1ec7u ch\u1ecbu l\u1eeda hi\u1ec7u su\u1ea5t cao th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c b\u1ed9 ph\u1eadn b\u1eb1ng th\u00e9p v\u00e0 gang l\u1edbn.<\/p>\n<p style=\"padding-left: 40px;\"><strong>B\u1ed9t than ch\u00ec:<\/strong>\u00a0\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong s\u1ea3n xu\u1ea5t gang do kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y cao nh\u01b0ng d\u1ec5 b\u1ecb oxy h\u00f3a.<\/p>\n<p style=\"padding-left: 40px;\"><strong>Kyanite:<\/strong>\u00a0Ph\u00e2n h\u1ee7y th\u00e0nh mullite \u1edf nhi\u1ec7t \u0111\u1ed9 cao, l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t s\u1ef1 thay th\u1ebf ph\u00f9 h\u1ee3p cho c\u00e1c v\u1eadt li\u1ec7u d\u1ef1a tr\u00ean alumina.<\/p>\n<h3><strong>3. C\u00e1t \u0111\u00fac:<\/strong><\/h3>\n<ul>\n<li>Silica sandis kh\u00f4 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t.<\/li>\n<li>C\u00e1t ph\u1ea3i c\u00f3 h\u00e0m l\u01b0\u1ee3ng silica cao (85% -90% tr\u1edf l\u00ean), ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t th\u00edch h\u1ee3p (0,850 s\u1eaft0,300 mm \u0111\u1ed1i v\u1edbi v\u1eadt \u0111\u00fac b\u1eb1ng th\u00e9p v\u00e0 s\u1eaft), t\u00ednh th\u1ea5m t\u1ed1t v\u00e0 \u0111\u1ed9 kh\u00fac x\u1ea1.<\/li>\n<\/ul>\n<h3><strong>4. Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng r\u00f3t:<\/strong><\/h3>\n<ul>\n<li>C\u00e1c h\u1ec7 th\u1ed1ng gating th\u1ef1c hi\u1ec7n m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o d\u00f2ng ch\u1ea3y m\u01b0\u1ee3t m\u00e0 c\u1ee7a kim lo\u1ea1i n\u00f3ng ch\u1ea3y v\u00e0 s\u01a1 t\u00e1n th\u00e0nh c\u00f4ng c\u00e1c kh\u00ed ph\u00e2n h\u1ee7y.<\/li>\n<li>Thi\u1ebft k\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng r\u00f3t trong EPCDiffers t\u1eeb \u0111\u00fac c\u00e1t truy\u1ec1n th\u1ed1ng v\u00e0 n\u00ean xem x\u00e9t c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee5 th\u1ec3 c\u1ee7a qu\u00e1 tr\u00ecnh.<\/li>\n<li>C\u00e1c y\u1ebfu t\u1ed1 \u0111\u1ec3 xem x\u00e9t khi thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng r\u00f3t bao g\u1ed3m:<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">K\u00edch th\u01b0\u1edbc \u0111\u00fac v\u00e0 h\u00ecnh d\u1ea1ng.<\/p>\n<p style=\"padding-left: 80px;\">C\u1ea5u h\u00ecnh c\u1ee5m m\u00f4 h\u00ecnh.<\/p>\n<p style=\"padding-left: 80px;\">Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed5.<\/p>\n<p style=\"padding-left: 80px;\">\u0110i\u1ec7n tr\u1edf d\u00f2ng kim lo\u1ea1i do m\u00f4 h\u00ecnh b\u1ed1c h\u01a1i.<\/p>\n<p style=\"padding-left: 80px;\">S\u1ef1 c\u1ea7n thi\u1ebft c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t h\u1ec7 th\u1ed1ng r\u00f3t k\u00edn \u0111\u1ec3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh \u0111\u1ed5.<\/p>\n<h3><strong>5. Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed5:<\/strong><\/h3>\n<ul>\n<li>Nhi\u1ec7t \u0111\u1ed9 r\u00f3t trong EPCShould cao h\u01a1n m\u1ed9t ch\u00fat (30-50 \u00b0 C) so v\u1edbi \u0111\u00fac c\u00e1t truy\u1ec1n th\u1ed1ng \u0111\u1ec3 b\u00f9 cho nhi\u1ec7t h\u1ea5p th\u1ee5 trong qu\u00e1 tr\u00ecnh b\u1ed1c h\u01a1i b\u1ecdt.<\/li>\n<li>T\u00ednh ch\u1ea5t kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 s\u1ebd d\u1eabn \u0111\u1ebfn c\u00e1c khi\u1ebfm khuy\u1ebft nh\u01b0 l\u00e0m \u0111\u1ea7y kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7, \u0111\u00f3ng c\u1eeda l\u1ea1nh v\u00e0 n\u1ebfp nh\u0103n.<\/li>\n<li>Qu\u00e1 m\u1ee9c qu\u00e1 m\u1ee9c cao g\u00e2y ra khi\u1ebfm khuy\u1ebft bao g\u1ed3m c\u00e1t.<\/li>\n<\/ul>\n<h3><strong>6. Ki\u1ec3m so\u00e1t \u00e1p su\u1ea5t \u00e2m:<\/strong><\/h3>\n<ul>\n<li>\u00c1p l\u1ef1c ti\u00eau c\u1ef1c l\u00e0 m\u1ed9t kh\u00eda c\u1ea1nh quan tr\u1ecdng c\u1ee7a EPC, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ee3p kim \u0111en (s\u1eaft v\u00e0 th\u00e9p), v\u00ec n\u00f3 gi\u00fap:<\/li>\n<\/ul>\n<p>T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 v\u00e0 \u0111\u1ed9 c\u1ee9ng c\u1ee7a khu\u00f4n c\u00e1t.<\/p>\n<p>Lo\u1ea1i b\u1ecf hi\u1ec7u qu\u1ea3 c\u00e1c s\u1ea3n ph\u1ea9m kh\u00ed \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb ph\u00e2n r\u00e3 m\u1eabu.<\/p>\n<ul>\n<li>M\u1ee9c \u0111\u1ed9 \u00e1p l\u1ef1c ti\u00eau c\u1ef1c th\u1eddi gian gi\u1eef c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0:<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">V\u1eadt li\u1ec7u \u0111\u00fac.<\/p>\n<p style=\"padding-left: 80px;\">C\u1ea5u tr\u00fac c\u1ee5m m\u00f4 h\u00ecnh.<\/p>\n<p style=\"padding-left: 80px;\">Lo\u1ea1i l\u1edbp ph\u1ee7 v\u00e0 \u0111\u1ed9 d\u00e0y.<\/p>\n<p style=\"padding-left: 80px;\">K\u00edch th\u01b0\u1edbc \u0111\u00fac.<\/p>\n<h3><strong>7. Bi\u1ec3u n\u00e9n rung:<\/strong><\/h3>\n<ul>\n<li>S\u1ef1 n\u00e9n rung c\u1ee7a c\u00e1t m\u1ed1c c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c:<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">M\u1eadt \u0111\u1ed9 \u0111\u00f3ng g\u00f3i th\u00edch h\u1ee3p c\u1ee7a c\u00e1t.<\/p>\n<p style=\"padding-left: 80px;\">H\u1ed7 tr\u1ee3 th\u1ed1ng nh\u1ea5t cho m\u1eabu b\u1ecdt.<\/p>\n<p style=\"padding-left: 80px;\">Ph\u00f2ng ng\u1eeba c\u00e1c khuy\u1ebft t\u1eadt \u0111\u00fac g\u00e2y ra b\u1edfi bi\u1ebfn d\u1ea1ng n\u1ea5m m\u1ed1c ho\u1eb7c n\u1ee9t l\u1edbp ph\u1ee7.<\/p>\n<ul>\n<li>C\u00e1c th\u00f4ng s\u1ed1 rung \u0111\u1ed9ng nh\u01b0 l\u1ef1c k\u00edch th\u00edch, bi\u00ean \u0111\u1ed9 v\u00e0 th\u1eddi gian rung n\u00ean \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh c\u1ea9n th\u1eadn \u0111\u1ec3 ng\u0103n ch\u1eb7n bi\u1ebfn d\u1ea1ng m\u1eabu.<\/li>\n<\/ul>\n<h2><strong>Ii.<\/strong><\/h2>\n<h3><strong>1. X\u1eed l\u00fd kim lo\u1ea1i n\u00f3ng ch\u1ea3y:<\/strong><\/h3>\n<ul>\n<li>X\u1eed l\u00fd kim lo\u1ea1i n\u00f3ng ch\u1ea3y li\u00ean quan \u0111\u1ebfn r\u1ee7i ro v\u1ed1n c\u00f3, v\u00e0 c\u00e1c quy tr\u00ecnh an to\u00e0n ph\u00f9 h\u1ee3p v\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 c\u00e1 nh\u00e2n (PPE) ph\u1ea3i \u0111\u01b0\u1ee3c tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t.<\/li>\n<li>PPE n\u00ean bao g\u1ed3m qu\u1ea7n \u00e1o ch\u1ed1ng nhi\u1ec7t, g\u0103ng tay, khi\u00ean m\u1eb7t v\u00e0 gi\u00e0y an to\u00e0n.<\/li>\n<li>H\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3 v\u00e0 \u1ed1ng x\u1ea3 th\u00edch h\u1ee3p c\u1ea7n thi\u1ebft \u0111\u1ec3 ki\u1ec3m so\u00e1t kh\u00f3i v\u00e0 kh\u00ed \u0111\u01b0\u1ee3c t\u1ea1o ra trong qu\u00e1 tr\u00ecnh tan ch\u1ea3y v\u00e0 \u0111\u1ed5.<\/li>\n<\/ul>\n<h3><strong>2. X\u1eed l\u00fd v\u1eadt li\u1ec7u m\u1eabu v\u00e0 l\u1edbp ph\u1ee7:<\/strong><\/h3>\n<ul>\n<li>M\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u m\u1eabu b\u1ecdt v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n l\u1edbp ph\u1ee7 c\u00f3 th\u1ec3 gi\u1ea3i ph\u00f3ng qu\u00e1 tr\u00ecnh x\u1eed l\u00fd ho\u1eb7c ph\u00e2n h\u1ee7y kh\u00f3i c\u00f3 h\u1ea1i.<\/li>\n<li>Th\u00f4ng gi\u00f3 \u0111\u1ea7y \u0111\u1ee7 c\u1ea7n thi\u1ebft khi x\u1eed l\u00fd c\u00e1c v\u1eadt li\u1ec7u n\u00e0y.<\/li>\n<li>T\u1edd d\u1eef li\u1ec7u an to\u00e0n (SDS) cho t\u1ea5t c\u1ea3 c\u00e1c t\u00e0i li\u1ec7u n\u00ean c\u00f3 s\u1eb5n v\u00e0 tham kh\u1ea3o \u00fd ki\u1ebfn \u200b\u200bcho c\u00e1c quy tr\u00ecnh x\u1eed l\u00fd an to\u00e0n.<\/li>\n<\/ul>\n<h3><strong>3. X\u1eed l\u00fd c\u00e1t:<\/strong><\/h3>\n<ul>\n<li>C\u00e1t silica kh\u00f4 c\u00f3 th\u1ec3 t\u1ea1o ra x\u1eed l\u00fd b\u1ee5i, c\u00f3 th\u1ec3 g\u00e2y nguy hi\u1ec3m h\u00f4 h\u1ea5p.<\/li>\n<li>B\u1ec7nh tri\u1ec7t ti\u00eau b\u1ee5i nh\u01b0 l\u00e0m \u01b0\u1edbt c\u00e1t ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3 c\u1ee5c b\u1ed9 n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/li>\n<li>N\u00ean \u0111eo m\u1eb7t n\u1ea1 b\u1ee5i b\u1ea3o v\u1ec7 h\u00f4 h\u1ea5p khi x\u1eed l\u00fd c\u00e1t kh\u00f4.<\/li>\n<\/ul>\n<h3><strong>4. Nguy hi\u1ec3m h\u1ecfa ho\u1ea1n:<\/strong><\/h3>\n<ul>\n<li>S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u d\u1ec5 ch\u00e1y nh\u01b0 c\u00e1c m\u1eabu b\u1ecdt v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m ph\u00e2n h\u1ee7y d\u1ec5 ch\u00e1y g\u00e2y nguy hi\u1ec3m h\u1ecfa ho\u1ea1n.<\/li>\n<li>\u0110o ph\u00f2ng ch\u1ed1ng ch\u1eefa ch\u00e1y nh\u01b0 l\u01b0u tr\u1eef th\u00edch h\u1ee3p c\u00e1c v\u1eadt li\u1ec7u d\u1ec5 ch\u00e1y, s\u1ef1 s\u1eb5n c\u00f3 c\u1ee7a b\u00ecnh ch\u1eefa ch\u00e1y v\u00e0 c\u00e1c quy tr\u00ecnh s\u01a1 t\u00e1n r\u00f5 r\u00e0ng l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/li>\n<\/ul>\n<h3><strong>5. Ng\u0103n ch\u1eb7n b\u1eafn tung t\u00f3e trong khi r\u00f3t:<\/strong><\/h3>\n<ul>\n<li>Splashingcan kim lo\u1ea1i n\u00f3ng ch\u1ea3y g\u00e2y b\u1ecfng n\u1eb7ng v\u00e0 c\u00e1c ch\u1ea5n th\u01b0\u01a1ng kh\u00e1c.<\/li>\n<li>C\u00e1c bi\u1ec7n ph\u00e1p \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 gi\u1eadt g\u00e2n bao g\u1ed3m:<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">S\u1eed d\u1ee5ng c\u00e1c m\u1eabu b\u1ecdt m\u1eadt \u0111\u1ed9 th\u1ea5p.<\/p>\n<p style=\"padding-left: 80px;\">L\u00e0m kh\u00f4 ho\u00e0n to\u00e0n c\u00e1c m\u1eabu b\u1ecdt tr\u01b0\u1edbc khi ph\u1ee7.<\/p>\n<p style=\"padding-left: 80px;\">Tr\u00e1nh ph\u1ee7 c\u00e1c k\u00eanh r\u00f3t tr\u1ef1c ti\u1ebfp v\u00e0 b\u00ean.<\/p>\n<p style=\"padding-left: 80px;\">L\u1eafp \u0111\u1eb7t m\u1ed9t t\u1ea5m v\u00e1ch ng\u0103n ph\u00eda tr\u00ean c\u1ed1c \u0111\u1ed5 \u0111\u1ec3 l\u00e0m ch\u1ec7ch h\u01b0\u1edbng.<\/p>\n<h2><strong><b>T\u1ed5ng quan c\u1ee7a c\u00f4ng ty: C\u00f4ng ty TNHH C\u00f4ng ngh\u1ec7 H\u00e0ng Ch\u00e2u H\u00e0ng Ch\u00e2u, Ltd<\/b><\/strong><\/h2>\n<p><a href=\"https:\/\/www.oc-epc.com\/vi\/\"><strong><u><b>C\u00f4ng ty TNHH C\u00f4ng ngh\u1ec7 H\u00e0ng Ch\u00e2u Ouchen<\/b><\/u><\/strong><\/a>, c\u00f3 tr\u1ee5 s\u1edf t\u1ea1i Xindeng Town, Qu\u1eadn Fuyang, l\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng \u0111\u1ea7u chuy\u00ean v\u1ec1 thi\u1ebft b\u1ecb \u0111\u00fac x\u1ed1p b\u1ecb m\u1ea5t th\u00f4ng minh cao c\u1ea5p.<\/p>\n<p><img decoding=\"async\" class=\"wp-image-4087 aligncenter\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2025\/01\/Lost-Foam-Casting-Process-1-300x188.webp\" alt=\"Lost Boam Casting Process 1\" width=\"602\" height=\"377\" srcset=\"\" sizes=\"(max-width: 602px) 100vw, 602px\" data-srcset=\"\" \/><\/p>\n<p>Ouchen cung c\u1ea5p m\u1ed9t lo\u1ea1t c\u00e1c m\u00e1y \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t ti\u00ean ti\u1ebfn:<\/p>\n<h3><strong>M\u00e1y s\u1ea3n xu\u1ea5t m\u1eabu b\u1ecdt<\/strong>:<\/h3>\n<ol>\n<li><a href=\"https:\/\/www.oc-epc.com\/vi\/danh-muc-san-pham\/may-tam-bot\/\"><strong><u>M\u00e1y x\u1ed1p<\/u><\/strong><\/a>: T\u1ea1o t\u1ea5m b\u1ecdt cho c\u00e1c m\u1eabu v\u1edbi c\u00e1c \u0111i\u1ec1u khi\u1ec3n \u0111\u00e1ng tin c\u1eady.<\/li>\n<li><strong>M\u00e1y t\u1ea1o ti\u1ec1n tr\u01b0\u1edbc<\/strong>: M\u1edf r\u1ed9ng c\u00e1c h\u1ea1t EPS, c\u00f3 s\u1eb5n trong c\u00e1c m\u00f4 h\u00ecnh ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng \u0111\u01b0\u1ee3c x\u1ea3 ho\u00e0n to\u00e0n v\u1edbi \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c cho \u0111\u1ed9 l\u1ec7ch m\u1edf r\u1ed9ng h\u1ea1t t\u1ed1i thi\u1ec3u.<\/li>\n<li><strong>Silo tr\u01b0\u1edfng th\u00e0nh<\/strong>: M\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng m\u00e1y t\u00ednh \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 \u1ed5n \u0111\u1ecbnh c\u00e1c h\u1ea1t m\u1edf r\u1ed9ng tr\u01b0\u1edbc, \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n.<\/li>\n<li><a href=\"https:\/\/www.oc-epc.com\/vi\/danh-muc-san-pham\/may-ep-bot\/\"><strong><u>M\u00e1y \u0111\u00fac b\u1ecdt<\/u><\/strong><\/a>: Bao g\u1ed3m <strong>Th\u1eb3ng \u0111\u1ee9ng<\/strong>V\u00e0 <strong>N\u1eb1m ngang<\/strong>\u00a0C\u00e1c m\u00f4 h\u00ecnh v\u1edbi c\u00e1c ho\u1ea1t \u0111\u1ed9ng t\u1ef1 \u0111\u1ed9ng v\u00e0 thi\u1ebft k\u1ebf m\u1ea1nh m\u1ebd \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3.<\/li>\n<\/ol>\n<h3><strong>Thi\u1ebft y\u1ebfu<\/strong><strong>\u00a0L<\/strong><strong>OST <\/strong><strong>F<\/strong><strong>oam <\/strong><strong>C<\/strong><strong>asting<\/strong><strong>\u00a0<\/strong><strong>Thi\u1ebft b\u1ecb ph\u1ee5 tr\u1ee3<\/strong>:<\/h3>\n<ol>\n<li><strong>M\u00e1y s\u1ea5y kh\u00f4ng kh\u00ed<\/strong>: Cung c\u1ea5p c\u00e1c l\u1ef1a ch\u1ecdn s\u1ea5y kh\u00f4 hi\u1ec7u qu\u1ea3 v\u1ec1 n\u0103ng l\u01b0\u1ee3ng, th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng trung t\u00e2m<\/strong>: \u0110\u1ea3m b\u1ea3o m\u1ed9t m\u00f4i tr\u01b0\u1eddng s\u1ea1ch s\u1ebd, kh\u00f4ng c\u00f3 b\u1ee5i.<\/li>\n<li><strong>M\u00e1y tr\u1ed9n s\u01a1n lo\u1ea1i n\u00e2ng<\/strong>: \u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp ph\u1ee7 nh\u1ea5t qu\u00e1n.<\/li>\n<\/ol>\n<p>Thi\u1ebft b\u1ecb Ouchen s\u01b0\u1eddn \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u1edbi c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn, t\u1ed1i \u0111a h\u00f3a ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t, v\u1edbi s\u1ef1 h\u1ed7 tr\u1ee3 sau b\u00e1n h\u00e0ng to\u00e0n di\u1ec7n.<\/p>\n<h2><strong><b>Ph\u1ea7n k\u1ebft lu\u1eadn<\/b><\/strong><\/h2>\n<p>M\u1ea5t b\u1ecdt \u0111\u00fac l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh \u0111a n\u0103ng mang l\u1ea1i \u0111\u1ed9 ch\u00ednh x\u00e1c chi\u1ec1u cao v\u00e0 thi\u1ebft k\u1ebf ph\u1ee9c t\u1ea1p.<\/p>\n<p><strong>Ghi ch\u00fa:<\/strong>\u00a0Ph\u1ea3n h\u1ed3i n\u00e0y ch\u1ec9 d\u1ef1a tr\u00ean c\u00e1c ngu\u1ed3n \u0111\u01b0\u1ee3c cung c\u1ea5p v\u00e0 c\u00f3 th\u1ec3 kh\u00f4ng bao g\u1ed3m t\u1ea5t c\u1ea3 c\u00e1c kh\u00eda c\u1ea1nh c\u1ee7a \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Lost foam casting (EPC), also known as full-mold casting, is a casting process that uses an expendable foam pattern to create complex and near-net-shape castings. It offers advantages such as high dimensional accuracy, design flexibility, and reduced machining costs compared to traditional sand casting. Here are the key specifications, requirements, and safety precautions for the [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4088,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[160],"tags":[],"class_list":["post-4086","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"acf":[],"jetpack_publicize_connections":[],"_links":{"self":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4086","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/comments?post=4086"}],"version-history":[{"count":2,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4086\/revisions"}],"predecessor-version":[{"id":4090,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4086\/revisions\/4090"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media\/4088"}],"wp:attachment":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media?parent=4086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/categories?post=4086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/tags?post=4086"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}