{"id":4552,"date":"2025-09-11T11:50:38","date_gmt":"2025-09-11T03:50:38","guid":{"rendered":"https:\/\/www.oc-epc.com\/?p=4552"},"modified":"2025-09-09T11:55:09","modified_gmt":"2025-09-09T03:55:09","slug":"duc-bot-bi-mat-cac-loai-bot-lam-the-nao-de-chon-bot-tot-nhat-cho-duc-bot-bi-mat","status":"publish","type":"post","link":"https:\/\/www.oc-epc.com\/vi\/news-blog\/industry-news\/lost-foam-casting-foam-types-how-to-select-the-best-foam-for-lost-foam-casting\/","title":{"rendered":"Lost Foam Casting C\u00e1c lo\u1ea1i b\u1ecdt L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn b\u1ecdt t\u1ed1t nh\u1ea5t cho \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t"},"content":{"rendered":"<h2 id=\"introduction-to-lost-foam-casting-and-the-role-of-foam-materials\">Gi\u1edbi thi\u1ec7u v\u1ec1 \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t v\u00e0 vai tr\u00f2 c\u1ee7a v\u1eadt li\u1ec7u b\u1ecdt<\/h2>\n<p><a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/cac-san-pham\/\"><strong>M\u1ea5t b\u1ecdt \u0111\u00fac<\/strong><\/a>, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u00fac m\u1eabu bay h\u01a1i, l\u00e0 m\u1ed9t c\u00e1ch s\u00e1ng t\u1ea1o v\u00e0 ti\u1ec7n d\u1ee5ng \u0111\u1ec3 l\u00e0m c\u00e1c b\u1ed9 ph\u1eadn kim lo\u1ea1i chi ti\u1ebft. N\u00f3 thay \u0111\u1ed5i c\u00e1ch ch\u00fang ta t\u1ea1o ra c\u00e1c h\u00ecnh d\u1ea1ng kh\u00f3 kh\u0103n trong s\u1ea3n xu\u1ea5t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y b\u1eaft \u0111\u1ea7u v\u1edbi vi\u1ec7c t\u1ea1o ra m\u1ed9t m\u00f4 h\u00ecnh b\u1ecdt tr\u00f4ng gi\u1ed1ng nh\u01b0 m\u1ea3nh cu\u1ed1i c\u00f9ng. Sau \u0111\u00f3, ch\u00fang t\u00f4i bao ph\u1ee7 n\u00f3 v\u1edbi m\u1ed9t l\u1edbp ch\u1ed1ng nhi\u1ec7t, \u0111\u1eb7t n\u00f3 trong c\u00e1t l\u1ecfng l\u1ecfng, v\u00e0 \u0111\u1ed5 kim lo\u1ea1i n\u00f3ng ngay v\u00e0o thi\u1ebft l\u1eadp. Khi kim lo\u1ea1i v\u1ed9i v\u00e0ng v\u00e0o, b\u1ecdt bi\u1ebfn th\u00e0nh kh\u00ed do nhi\u1ec7t \u0111\u1ed9 m\u1ea1nh m\u1ebd. \u0110i\u1ec1u n\u00e0y \u0111\u1ec3 l\u1ea1i m\u1ed9t kh\u00f4ng gian ho\u00e0n h\u1ea3o cho kim lo\u1ea1i \u0111\u1ec3 \u0111\u1ecbnh c\u01b0 v\u00e0 h\u00ecnh th\u00e0nh ph\u1ea7n.<\/p>\n<p>&nbsp;<\/p>\n<div style=\"text-align: center;\"><img decoding=\"async\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2025\/09\/Lost-Foam-Casting-Foam.webp\" alt=\"M\u1ea5t b\u1ecdt \u0111\u00fac b\u1ecdt\" \/><\/div>\n<p>B\u1ecdt \u0111\u00f3ng m\u1ed9t vai tr\u00f2 r\u1ea5t l\u1edbn trong qu\u00e1 tr\u00ecnh n\u00e0y. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t m\u00f4 h\u00ecnh v\u1ee9t b\u1ecf c\u1ea7n bi\u1ebfn m\u1ea5t m\u00e0 kh\u00f4ng c\u00f3 d\u1ea5u v\u1ebft. N\u1ebfu ph\u1ea7n c\u00f2n l\u1ea1i d\u00ednh v\u00e0o xung quanh, ch\u00fang c\u00f3 th\u1ec3 l\u00e0m l\u1ed9n kim lo\u1ea1i ho\u1eb7c g\u00e2y ra l\u1ed7 h\u1ed5ng nh\u01b0 l\u1ed7 nh\u1ecf ho\u1eb7c c\u00e1c m\u1ea3nh kh\u00f4ng mong mu\u1ed1n. Ch\u1ecdn b\u1ecdt ph\u00f9 h\u1ee3p gi\u00fap sao ch\u00e9p c\u00e1c thi\u1ebft k\u1ebf ph\u1ee9c t\u1ea1p ch\u00ednh x\u00e1c v\u00e0 l\u00e0m cho \u0111\u00fac m\u01b0\u1ee3t m\u00e0 \u00edt l\u00e0m s\u1ea1ch h\u01a1n sau \u0111\u00f3.<\/p>\n<h2 id=\"types-of-foam-used-in-lost-foam-casting\">C\u00e1c lo\u1ea1i b\u1ecdt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t<\/h2>\n<p>C\u00e1c lo\u1ea1i b\u1ecdt kh\u00e1c nhau \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t, m\u1ed7i lo\u1ea1i c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c nhu c\u1ea7u kh\u00e1c nhau. C\u00e1c l\u1ef1a ch\u1ecdn th\u00f4ng th\u01b0\u1eddng l\u00e0 Polystyrene m\u1edf r\u1ed9ng (EPS), Polystyrene \u0111\u00f9n (XPS), Polymethyl Methacrylate (PMMA), v\u00e0 \u0111\u00f4i khi b\u1ecdt polyurethane. Tuy nhi\u00ean, polyurethane th\u01b0\u1eddng \u0111\u01b0\u1ee3c b\u1ecf qua v\u00ec n\u00f3 c\u00f3 th\u1ec3 nguy hi\u1ec3m khi s\u1eed d\u1ee5ng.<\/p>\n<h2 id=\"expanded-polystyrene-eps-foam\">B\u1ecdt polystyrene m\u1edf r\u1ed9ng (EPS)<\/h2>\n<p>Polystyrene m\u1edf r\u1ed9ng (EPS) l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t. N\u00f3 \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb kho\u1ea3ng 2,5% polystyrene v\u00e0 97,5% kh\u00f4ng kh\u00ed. C\u00f4ng nh\u00e2n l\u00e0m cho n\u00f3 b\u1eb1ng c\u00e1ch th\u1ed5i l\u00ean h\u1ea1t polystyrene b\u00ean trong m\u1ed9t khu\u00f4n v\u1edbi h\u01a1i n\u01b0\u1edbc. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t v\u1eadt ch\u1ea5t nh\u1eb9, tr\u1ecdng l\u01b0\u1ee3ng th\u1ea5p th\u01b0\u1eddng n\u1eb7ng t\u1eeb 1,4 \u0111\u1ebfn 5,0 pound m\u1ed7i foot kh\u1ed1i (pcf).<\/p>\n<p>M\u1ecdi ng\u01b0\u1eddi th\u00edch EPS b\u1edfi v\u00ec n\u00f3 gi\u1eef h\u00ecnh d\u1ea1ng c\u1ee7a n\u00f3 t\u1ed1t, d\u1ec5 khu\u00f4n v\u00e0 kh\u00f4ng t\u1ed1n nhi\u1ec1u ti\u1ec1n. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ecdt t\u1ed1t nh\u1ea5t cho c\u00e1c d\u1ef1 \u00e1n \u0111\u00fac b\u1ecdt m\u1ea5t m\u00e1t cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u. Th\u00eam v\u00e0o \u0111\u00f3, n\u00f3 chuy\u1ec3n th\u00e0nh kh\u00ed g\u1ecdn g\u00e0ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao m\u00e0 kh\u00f4ng \u0111\u1ec3 l\u1ea1i nhi\u1ec1u r\u00e1c th\u1ea3i ph\u00eda sau.<\/p>\n<p><strong>L\u1ee3i th\u1ebf:<\/strong><br \/>\nCh\u1ea5t n\u00e0y cung c\u1ea5p \u0111\u1ed9 ch\u00ednh x\u00e1c si\u00eau ch\u1eb7t ch\u1ebd, v\u1edbi gi\u1edbi h\u1ea1n g\u1ea7n nh\u01b0 \u00b1 0,005 mm \/ mm v\u00e0 \u0111\u1ed9 m\u1ecbn b\u1ec1 m\u1eb7t t\u1eeb 2,5 \u0111\u1ebfn 25 \u03bcm RMS. N\u00f3 ho\u1ea1t \u0111\u1ed9ng tuy\u1ec7t v\u1eddi cho vi\u1ec7c l\u00e0m r\u1ea5t nhi\u1ec1u m\u1eb7t h\u00e0ng v\u00e0 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i ch\u1ebf.<\/p>\n<p><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><br \/>\nEPS c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng th\u1ea5p h\u01a1n c\u00f3 th\u1ec3 y\u1ebfu v\u00e0 c\u00f3 th\u1ec3 u\u1ed1n cong ho\u1eb7c ph\u00e1 v\u1ee1 khi x\u1eed l\u00fd ho\u1eb7c ph\u1ee7.<\/p>\n<h2 id=\"extruded-polystyrene-xps-foam\">B\u1ecdt polystyrene \u0111\u00f9n (XPS)<\/h2>\n<p>Polystyrene \u0111\u00f9n (XPS) l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn n\u1eb7ng h\u01a1n so v\u1edbi EPS. N\u00f3 \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch \u0111\u1ea9y polystyrene n\u00f3ng ch\u1ea3y qua m\u1ed9t khu\u00f4n, h\u00ecnh th\u00e0nh m\u1ed9t x\u00e2y d\u1ef1ng t\u1ebf b\u00e0o k\u00edn ch\u1eb7t ch\u1ebd v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng th\u01b0\u1eddng tr\u00ean 1,5 pcf.<\/p>\n<p><strong>L\u1ee3i th\u1ebf:<\/strong><br \/>\nXPS d\u1ec5 d\u00e0ng h\u01a1n \u0111\u1ec3 c\u1eaft v\u00e0 \u0111\u1ecbnh h\u00ecnh, c\u1ed9ng v\u1edbi n\u00f3 gi\u1eef \u0111\u01b0\u1ee3c d\u01b0\u1edbi \u00e1p l\u1ef1c. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft k\u1ebf chi ti\u1ebft trong c\u00e1c b\u1ed9 ph\u1eadn nh\u00f4m ho\u1eb7c s\u1eaft. N\u00f3 c\u0169ng cung c\u1ea5p m\u1ed9t k\u1ebft th\u00fac \u0111\u1eb9p h\u01a1n v\u00e0 t\u1ea1o ra \u00edt kh\u00ed h\u01a1n khi n\u00f3 \u0111\u1ed1t ch\u00e1y.<\/p>\n<p><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><br \/>\nN\u00f3 chi ph\u00ed nhi\u1ec1u h\u01a1n, v\u00e0 v\u00ec n\u00f3 d\u00e0y \u0111\u1eb7c h\u01a1n, n\u00f3 m\u1ea5t nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 bi\u1ebfn m\u1ea5t, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m ch\u1eadm c\u00f4ng vi\u1ec7c.<\/p>\n<h2 id=\"polymethyl-methacrylate-pmma-foam\">B\u1ecdt polymethyl methacrylate (PMMA)<\/h2>\n<p>Polymethyl Methacrylate (PMMA), ho\u1eb7c b\u1ecdt acrylic, l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn \u01b0a th\u00edch cho \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t h\u00e0ng \u0111\u1ea7u. N\u00f3 n\u1ed5i b\u1eadt v\u00ec \u0111\u1ed9 c\u1ee9ng r\u1eafn v\u00e0 ch\u00ednh x\u00e1c c\u1ee7a n\u00f3.<\/p>\n<p><strong>L\u1ee3i th\u1ebf:<\/strong><br \/>\nN\u00f3 gi\u1eef k\u00edch th\u01b0\u1edbc \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u00f4ng d\u1ec5 b\u1ecb cong, v\u00ec v\u1eady c\u00e1c m\u1ea3nh cu\u1ed1i c\u00f9ng xu\u1ea5t hi\u1ec7n \u0111\u00fang c\u00e1ch.<\/p>\n<p><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><br \/>\nN\u00f3 \u0111\u1eaft h\u01a1n nhi\u1ec1u so v\u1edbi EPS ho\u1eb7c XPS, v\u00e0 t\u00ecm m\u1ed9t l\u01b0\u1ee3ng l\u1edbn c\u00f3 th\u1ec3 kh\u00f3 kh\u0103n.<\/p>\n<h2 id=\"other-foam-types-polyurethane-and-alternatives\">C\u00e1c lo\u1ea1i b\u1ecdt kh\u00e1c: Polyurethane v\u00e0 thay th\u1ebf<\/h2>\n<p>B\u1ecdt polyurethane xu\u1ea5t hi\u1ec7n th\u1ec9nh tho\u1ea3ng, nh\u01b0ng h\u1ea7u h\u1ebft tr\u00e1nh n\u00f3 trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t. \u0110\u00f3 l\u00e0 b\u1edfi v\u00ec n\u00f3 gi\u1ea3i ph\u00f3ng kh\u00f3i c\u00f3 h\u1ea1i nh\u01b0 isocyanate khi b\u1ecb ch\u00e1y. C\u00e1c t\u00f9y ch\u1ecdn m\u1edbi, nh\u01b0 b\u1ecdt in 3D t\u00f9y ch\u1ec9nh, \u0111ang b\u1eaft \u0111\u1ea7u xu\u1ea5t hi\u1ec7n nh\u01b0 nh\u1eefng \u00fd t\u01b0\u1edfng m\u1edbi m\u1ebb.<\/p>\n<p>&nbsp;<\/p>\n<div style=\"text-align: center;\"><img decoding=\"async\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2025\/09\/Lost-foam-casting-Maturation-silo.webp\" alt=\"M\u1ea5t b\u1ecdt \u0111\u00fac tr\u01b0\u1edfng th\u00e0nh silo\" \/><\/div>\n<h2 id=\"how-to-select-the-best-foam-for-lost-foam-casting-a-comprehensive-guide\">C\u00e1ch ch\u1ecdn b\u1ecdt t\u1ed1t nh\u1ea5t cho \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n<\/h2>\n<h3 id=\"key-factors-in-foam-selection\">Y\u1ebfu t\u1ed1 ch\u00ednh trong l\u1ef1a ch\u1ecdn b\u1ecdt<\/h3>\n<h4 id=\"density-and-dimensional-stability\">M\u1eadt \u0111\u1ed9 v\u00e0 \u1ed5n \u0111\u1ecbnh chi\u1ec1u<\/h4>\n<p>N\u1eb7ng c\u1ee7a b\u1ecdt l\u00e0 r\u1ea5t quan tr\u1ecdng. B\u1ecdt d\u00e0y h\u01a1n, n\u00f3i gi\u1eefa 2-5 pcf, gi\u1eef v\u1eefng ch\u1eafc v\u00e0 kh\u00f4ng xo\u1eafn trong khi ph\u1ee7 ho\u1eb7c khi c\u00e1t \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i xung quanh ch\u00fang. Ch\u00fang ho\u00e0n h\u1ea3o cho c\u00e1c thi\u1ebft k\u1ebf kh\u00f3 kh\u0103n.<\/p>\n<h4 id=\"vaporization-characteristics\">\u0110\u1eb7c \u0111i\u1ec3m b\u1ed1c h\u01a1i<\/h4>\n<p>B\u1ecdt ph\u1ea3i bi\u1ebfn m\u1ea5t m\u00e0 kh\u00f4ng \u0111\u1ec3 l\u1ea1i r\u00e1c th\u1ea3i nh\u01b0 carbon ho\u1eb7c l\u01b0u hu\u1ef3nh ph\u00eda sau. Nh\u1eefng ph\u1ea7n c\u00f2n l\u1ea1i \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0m l\u1ed9n l\u1ed9n kim lo\u1ea1i d\u1ef1a tr\u00ean s\u1eaft v\u1edbi nh\u1eefng khi\u1ebfm khuy\u1ebft.<\/p>\n<h4 id=\"compatibility-with-casting-metal\">T\u01b0\u01a1ng th\u00edch v\u1edbi kim lo\u1ea1i \u0111\u00fac<\/h4>\n<p>Nh\u00f4m tr\u1ed9n t\u1ed1t v\u1edbi EPS v\u00ec n\u00f3 tan ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n. M\u1eb7t kh\u00e1c, th\u00e9p ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n v\u1edbi PMMA b\u1edfi v\u00ec n\u00f3 x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ed9 n\u00f3ng h\u01a1n.<\/p>\n<h4 id=\"cost-and-availability\">Chi ph\u00ed v\u00e0 t\u00ednh s\u1eb5n c\u00f3<\/h4>\n<p>EPS l\u00e0 l\u1ef1a ch\u1ecdn r\u1ebb nh\u1ea5t v\u00e0 tuy\u1ec7t v\u1eddi \u0111\u1ec3 l\u00e0m h\u00e0ng t\u1ea5n th\u1ee9. PMMA chi ph\u00ed nhi\u1ec1u h\u01a1n nh\u01b0ng \u0111\u00e1ng gi\u00e1 khi b\u1ea1n c\u1ea7n k\u1ebft qu\u1ea3 si\u00eau ch\u00ednh x\u00e1c.<\/p>\n<h4 id=\"ease-of-processing-and-machinability\">D\u1ec5 d\u00e0ng x\u1eed l\u00fd v\u00e0 kh\u1ea3 n\u0103ng gia c\u00f4ng<\/h4>\n<p>B\u1ecdt n\u00ean d\u1ec5 c\u1eaft, kh\u1eafc ho\u1eb7c \u0111\u1ecbnh h\u00ecnh b\u1eb1ng d\u00e2y n\u00f3ng. XPS l\u00e0 tuy\u1ec7t v\u1eddi \u0111\u1ec3 m\u00e0i m\u00e0 kh\u00f4ng g\u1ea5p cao su, trong khi EPS nhanh ch\u00f3ng cho c\u00e1c m\u00f4 h\u00ecnh th\u1eed nghi\u1ec7m s\u1edbm.<\/p>\n<h4 id=\"environmental-and-safety-considerations\">Nh\u1eefng c\u00e2n nh\u1eafc v\u1ec1 m\u00f4i tr\u01b0\u1eddng v\u00e0 an to\u00e0n<\/h4>\n<p>\u0110i cho b\u1ecdt kh\u00f4ng gi\u1ea3i ph\u00f3ng kh\u00f3i kh\u00f3 ch\u1ecbu. Nh\u1eefng lo\u1ea1i nh\u01b0 EPS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng gi\u00fap gi\u1ea3m ch\u1ea5t th\u1ea3i v\u00e0 g\u00e2y h\u1ea1i cho thi\u00ean nhi\u00ean.<\/p>\n<h3 id=\"step-by-step-selection-process\">Qu\u00e1 tr\u00ecnh l\u1ef1a ch\u1ecdn t\u1eebng b\u01b0\u1edbc<\/h3>\n<ol type=\"1\">\n<li><strong>\u0110\u00e1nh gi\u00e1 y\u00eau c\u1ea7u d\u1ef1 \u00e1n:<\/strong> Ph\u00f9 h\u1ee3p v\u1edbi kh\u00f3 kh\u0103n c\u1ee7a c\u00f4ng vi\u1ec7c v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng b\u1ecdt ph\u00f9 h\u1ee3p.<\/li>\n<li><strong>\u0110\u00e1nh gi\u00e1 c\u00e1c t\u00f9y ch\u1ecdn b\u1ecdt:<\/strong> Ki\u1ec3m tra c\u00e1c bi\u1ec3u \u0111\u1ed3 cho th\u1ea5y c\u00e1ch m\u1ed7i lo\u1ea1i th\u1ef1c hi\u1ec7n.<\/li>\n<li><strong>Nguy\u00ean m\u1eabu &amp; Ki\u1ec3m tra:<\/strong> H\u00e3y th\u1eed xem b\u1ecdt ch\u00e1y ra nh\u01b0 th\u1ebf n\u00e0o.<\/li>\n<li><strong>T\u01b0 v\u1ea5n c\u00e1c chuy\u00ean gia:<\/strong> Nh\u1eadn l\u1eddi khuy\u00ean t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p bi\u1ebft nh\u1eefng th\u1ee9 c\u1ee7a h\u1ecd.<\/li>\n<li><strong>T\u1ed1i \u01b0u h\u00f3a cho quy m\u00f4:<\/strong> C\u00e2n gi\u00e1 so v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng cho c\u00e1c l\u00f4 l\u1edbn.<\/li>\n<\/ol>\n<table>\n<colgroup>\n<col style=\"width: 12%;\" \/>\n<col style=\"width: 17%;\" \/>\n<col style=\"width: 26%;\" \/>\n<col style=\"width: 21%;\" \/>\n<col style=\"width: 22%;\" \/> <\/colgroup>\n<thead>\n<tr>\n<th style=\"text-align: center;\"><strong>Lo\u1ea1i b\u1ecdt<\/strong><\/th>\n<th style=\"text-align: center;\"><strong>Ph\u1ea1m vi m\u1eadt \u0111\u1ed9 (pcf)<\/strong><\/th>\n<th style=\"text-align: center;\"><strong>Thu\u1eadn l\u1ee3i<\/strong><\/th>\n<th style=\"text-align: center;\"><strong>B\u1ea5t l\u1ee3i<\/strong><\/th>\n<th style=\"text-align: center;\"><strong>T\u1ed1t nh\u1ea5t cho<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\">EPS<\/td>\n<td style=\"text-align: left;\">1.4\u20135.0<\/td>\n<td style=\"text-align: left;\">Chi ph\u00ed th\u1ea5p; s\u1ea1ch \u0111\u1ed1t; h\u00ecnh d\u1ea1ng d\u1ec5 d\u00e0ng<\/td>\n<td style=\"text-align: left;\">M\u1ecfng manh \u1edf m\u1eadt \u0111\u1ed9 th\u1ea5p<\/td>\n<td style=\"text-align: left;\">Ph\u1ee5 t\u00f9ng \u00f4 t\u00f4 chung<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">XPS<\/td>\n<td style=\"text-align: left;\">1.5+<\/td>\n<td style=\"text-align: left;\">k\u1ebft th\u00fac m\u1ecbn; c\u00f3 th\u1ec3 gia c\u00f4ng<\/td>\n<td style=\"text-align: left;\">\u0110\u1eaft h\u01a1n; ch\u00e1y ch\u1eadm h\u01a1n<\/td>\n<td style=\"text-align: left;\">Nguy\u00ean m\u1eabu &amp; chi ti\u1ebft<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">PMMA<\/td>\n<td style=\"text-align: left;\">Bi\u1ebfn<\/td>\n<td style=\"text-align: left;\">\u0110\u1ed9 ch\u00ednh x\u00e1c cao; m\u1ea1nh m\u1ebd<\/td>\n<td style=\"text-align: left;\">\u0110\u1eaft ti\u1ec1n<\/td>\n<td style=\"text-align: left;\">C\u00e1c th\u00e0nh ph\u1ea7n h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"advantages-and-disadvantages-of-foam-types-in-lost-foam-casting\">L\u1ee3i th\u1ebf v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a c\u00e1c lo\u1ea1i b\u1ecdt trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t<\/h2>\n<p><strong>L\u1ee3i \u00edch t\u1ed5ng th\u1ec3:<\/strong><br \/>\nPh\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p b\u1ea1n l\u00e0m cho c\u00e1c b\u1ed9 ph\u1eadn g\u1ea7n nh\u01b0 s\u1eb5n s\u00e0ng \u0111\u1ec3 s\u1eed d\u1ee5ng, c\u1eaft gi\u1ea3m c\u00f4ng vi\u1ec7c b\u1ed5 sung l\u00ean \u0111\u1ebfn 50% v\u00e0 gi\u1ea3m ph\u1ebf li\u1ec7u. N\u00f3 x\u1eed l\u00fd c\u00e1c thi\u1ebft k\u1ebf hoang d\u00e3 m\u00e0 kh\u00f4ng c\u1ea7n th\u00eam m\u1ea3nh, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 \u0111\u1ec3 l\u1ea1i m\u1ed9t c\u00e1i nh\u00ecn m\u01b0\u1ee3t m\u00e0 tr\u00ean b\u1ec1 m\u1eb7t.<\/p>\n<p><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><br \/>\nC\u00e1c m\u1eabu b\u1ecdt c\u00f3 th\u1ec3 b\u1ecb ph\u00e1 v\u1ee1 d\u1ec5 d\u00e0ng, v\u00ec v\u1eady b\u1ea1n ph\u1ea3i c\u1ea9n th\u1eadn. Ch\u1ecdn nh\u1ea7m b\u1ecdt c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c l\u1ed7 nh\u1ecf ho\u1eb7c c\u00e1c m\u1ea3nh kh\u00f4ng mong mu\u1ed1n trong kim lo\u1ea1i.<\/p>\n<h2 id=\"best-practices-for-choosing-and-using-foam\">Th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u00e0 s\u1eed d\u1ee5ng Foam<\/h2>\n<ul>\n<li>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 ProCAST \u0111\u1ec3 \u0111o\u00e1n m\u1ecdi th\u1ee9 s\u1ebd di\u1ec5n ra nh\u01b0 th\u1ebf n\u00e0o.<\/li>\n<li>Tr\u1ea3i l\u1edbp ch\u1ed1ng nhi\u1ec7t b\u1eb1ng nhau tr\u00ean b\u1ecdt.<\/li>\n<li>Th\u00eam l\u1ed7 th\u00f4ng gi\u00f3 ho\u1eb7c risers \u0111\u1ec3 kh\u00ed c\u00f3 th\u1ec3 tho\u00e1t ra.<\/li>\n<li>Ki\u1ec3m tra \u0111\u1ed9 s\u1ea1ch c\u1ee7a b\u1ecdt th\u01b0\u1eddng xuy\u00ean.<\/li>\n<li>\u0110\u1ed1i v\u1edbi  th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t trong l\u1ef1a ch\u1ecdn b\u1ecdt cho \u0111\u00fac b\u1ecdt m\u1ea5t b\u1ec1n v\u1eefng,  \u0111i v\u1edbi EPS t\u00e1i s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1eef th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/li>\n<\/ul>\n<h2 id=\"faq\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<p><strong>Q: Lo\u1ea1i b\u1ecdt \u0111\u00fac b\u1ecdt m\u1ea5t t\u00edch t\u1ed1t nh\u1ea5t cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u l\u00e0 g\u00ec?<\/strong><br \/>\nA: EPS l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn. N\u00f3 gi\u1eef h\u00ecnh d\u1ea1ng c\u1ee7a n\u00f3 t\u1ed1t \u0111\u1eb9p, d\u1ec5 l\u00e0m vi\u1ec7c v\u1edbi, v\u00e0 kh\u00f4ng \u0111\u00e1nh v\u00e0o v\u00ed c\u1ee7a b\u1ea1n kh\u00f3. Ho\u00e0n h\u1ea3o cho nh\u1eefng ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u.<\/p>\n<p><strong>Q: T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng polyurethane kh\u00f4ng?<\/strong><br \/>\nA: B\u1ecdt polyurethane \u0111\u00f4i khi xu\u1ea5t hi\u1ec7n, nh\u01b0ng n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c b\u1ecf qua. \u0110\u00f3 l\u00e0 b\u1edfi v\u00ec n\u00f3 ph\u00e1t ra kh\u00f3i nguy hi\u1ec3m nh\u01b0 isocyanate khi b\u1ecb ch\u00e1y.<\/p>\n<p><strong>Q: L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 l\u1ef1a ch\u1ecdn gi\u1eefa XPS vs EPS?<\/strong><br \/>\nA: Ch\u1ecdn XPS n\u1ebfu m\u1ed9t c\u00e1i nh\u00ecn m\u01b0\u1ee3t m\u00e0 l\u00e0 ch\u00eca kh\u00f3a. \u0110i \u0111\u1ebfn EPS n\u1ebfu b\u1ea1n \u0111ang xem ng\u00e2n s\u00e1ch c\u1ee7a m\u00ecnh ho\u1eb7c ki\u1ebfm \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u c\u00f9ng m\u1ed9t l\u00fac.<\/p>\n<h2 id=\"explore-hangzhou-ouchens-advanced-equipment-for-efficient-lost-foam-casting\">Kh\u00e1m ph\u00e1 Hangzhou Ouchen&#8217; Thi\u1ebft b\u1ecb ti\u00ean ti\u1ebfn cho \u0111\u00fac b\u1ecdt m\u1ea5t hi\u1ec7u qu\u1ea3<\/h2>\n<p><a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/\"><strong>C\u00f4ng ty TNHH C\u00f4ng ngh\u1ec7 H\u00e0ng Ch\u00e2u Ouchen.<\/strong><\/a>, c\u00f3 tr\u1ee5 s\u1edf t\u1ea1i Qu\u1eadn Fuyang c\u1ee7a Hangzhou - \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 trung t\u00e2m c\u1ee7a Trung Qu\u1ed1c cho thi\u1ebft b\u1ecb EPS - mang l\u1ea1i c\u00e1c c\u00f4ng c\u1ee5 h\u00e0ng \u0111\u1ea7u \u0111\u01b0\u1ee3c l\u00e0m ch\u1ec9 cho c\u00f4ng vi\u1ec7c b\u1ecdt b\u1ecb m\u1ea5t. C\u00f4ng ty pha tr\u1ed9n c\u00f4ng ngh\u1ec7 cao c\u1ea5p EPS \/ EPP c\u1ee7a \u0110\u1ee9c v\u1edbi m\u1ed9t s\u1ed1 b\u1eb1ng s\u00e1ng ch\u1ebf \u0111\u1ed9c \u0111\u00e1o c\u1ee7a ri\u00eang h\u1ecd. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i. C\u00e1c thi\u1ebft l\u1eadp tr\u01b0\u1edbc khi m\u1edf r\u1ed9ng c\u1ee7a h\u1ecd s\u1eed d\u1ee5ng c\u00e2n t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 gi\u1eef m\u1eadt \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh. H\u1ecd c\u0169ng c\u00f3 <a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/danh-muc-san-pham\/may-say-khong-khi\/\"><strong>h\u1ec7 th\u1ed1ng s\u1ea5y th\u00f4ng minh v\u1edbi m\u00e1y b\u01a1m nhi\u1ec7t ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng<\/strong><\/a> \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng cho kh\u00f4 khu\u00f4n tr\u1eafng. Ngo\u00e0i ra, m\u00e1y t\u1ea1o h\u00ecnh th\u1ee7y l\u1ef1c c\u1ee7a h\u1ecd \u0111i k\u00e8m v\u1edbi t\u1ef1 \u0111\u1ed9ng h\u00f3a PLC, cho ph\u00e9p ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c c\u00e1c th\u1ee9 nh\u01b0 nhi\u1ec7t v\u00e0 \u00e1p su\u1ea5t tr\u00ean t\u1ed1i \u0111a 28 b\u01b0\u1edbc. \u0110\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 doanh nghi\u1ec7p n\u00e0o nh\u1eb1m t\u1ecfa s\u00e1ng trong s\u1ea3n xu\u1ea5t khu\u00f4n b\u1ecb m\u1ea5t, Ouchen cung c\u1ea5p c\u00e1c g\u00f3i \u0111\u1ea7y \u0111\u1ee7 - t\u1eeb l\u1eadp k\u1ebf ho\u1ea1ch \u0111\u1ebfn \u0111\u00e0o t\u1ea1o - t\u1ea5t c\u1ea3 \u1edf m\u1ed9t n\u01a1i \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 tuy\u1ec7t v\u1eddi. <a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/lien-he\/\"><strong>Li\u00ean h\u1ec7 v\u1edbi Ouchen h\u00f4m nay<\/strong><\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction to Lost Foam Casting and the Role of Foam Materials Lost foam casting, often called evaporative pattern casting, is a creative and handy way to make detailed metal parts. It changes how we craft tricky shapes in manufacturing. This method starts with making a foam model that looks just like the final piece. Then, [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4547,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[160],"tags":[],"class_list":["post-4552","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\/4552","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=4552"}],"version-history":[{"count":1,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4552\/revisions"}],"predecessor-version":[{"id":4553,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4552\/revisions\/4553"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media\/4547"}],"wp:attachment":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media?parent=4552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/categories?post=4552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/tags?post=4552"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}