{"id":4895,"date":"2026-03-19T14:16:37","date_gmt":"2026-03-19T06:16:37","guid":{"rendered":"https:\/\/www.oc-epc.com\/?p=4895"},"modified":"2026-03-16T15:58:34","modified_gmt":"2026-03-16T07:58:34","slug":"lam-the-nao-mot-may-mo-rong-truoc-eps-hoat-dong-trong-qua-trinh-duc-bot-bi-mat","status":"publish","type":"post","link":"https:\/\/www.oc-epc.com\/vi\/news-blog\/industry-news\/how-does-an-eps-pre-expander-machine-work-in-the-lost-foam-casting-process\/","title":{"rendered":"M\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o trong qu\u00e1 tr\u00ecnh \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t?"},"content":{"rendered":"<p><a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/danh-muc-san-pham\/may-tao-bot-truoc\/\"><strong>M\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS<\/strong><\/a> \u0111\u00f3ng m\u1ed9t vai tr\u00f2 trung t\u00e2m trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t. N\u00f3 chu\u1ea9n b\u1ecb c\u00e1c h\u1ea1t polystyrene m\u1edf r\u1ed9ng (EPS) t\u1ea1o th\u00e0nh c\u00e1c m\u00f4 h\u00ecnh bi\u1ebfn m\u1ea5t khi kim lo\u1ea1i n\u00f3ng \u0111\u1ed5 v\u00e0o. B\u01b0\u1edbc n\u00e0y \u0111\u00f2i h\u1ecfi ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a h\u1ea1t \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c m\u1eadt \u0111\u1ed9 th\u1eadm ch\u00ed, h\u00ecnh d\u1ea1ng m\u1ea1nh m\u1ebd v\u00e0 \u0111\u00fac s\u1ea1ch s\u1ebd m\u00e0 kh\u00f4ng c\u00f3 l\u1ed7i.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-4900\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/Fully-automatic-pre-foaming-machineincluding-fluidized-drying-bed-1.webp\" alt=\"M\u00e1y t\u1ea1o ti\u1ec1n s\u1eb5n ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng (bao g\u1ed3m c\u1ea3 gi\u01b0\u1eddng s\u1ea5y l\u1ecfng)\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/Fully-automatic-pre-foaming-machineincluding-fluidized-drying-bed-1.webp 1024w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/Fully-automatic-pre-foaming-machineincluding-fluidized-drying-bed-1-300x169.webp 300w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/Fully-automatic-pre-foaming-machineincluding-fluidized-drying-bed-1-768x432.webp 768w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/Fully-automatic-pre-foaming-machineincluding-fluidized-drying-bed-1-18x10.webp 18w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/Fully-automatic-pre-foaming-machineincluding-fluidized-drying-bed-1-600x338.webp 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h2 id=\"introduction-to-lost-foam-casting-and-the-role-of-eps-pre-expander-machine\"><strong>Gi\u1edbi thi\u1ec7u v\u1ec1 \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t v\u00e0 vai tr\u00f2 c\u1ee7a m\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS<\/strong><\/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> s\u1eed d\u1ee5ng m\u1ed9t m\u1eabu b\u1ecdt bi\u1ebfn th\u00e0nh h\u01a1i n\u01b0\u1edbc khi kim lo\u1ea1i n\u00f3ng ch\u1ea3y ch\u1ea1m v\u00e0o n\u00f3. Kim lo\u1ea1i l\u1ea5p \u0111\u1ea7y kh\u00f4ng gian tr\u1ed1ng r\u1ed7ng c\u00f2n l\u1ea1i ph\u00eda sau. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ho\u1ea1t \u0111\u1ed9ng t\u1ed1t cho c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p. N\u00f3 c\u1eaft gi\u1ea3m gia c\u00f4ng th\u00eam v\u00e0 l\u00e3ng ph\u00ed \u00edt v\u1eadt li\u1ec7u h\u01a1n so v\u1edbi \u0111\u00fac c\u00e1t th\u00f4ng th\u01b0\u1eddng.<\/p>\n<p>M\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS l\u1ea5y h\u1ea1t th\u00f4 v\u00e0 l\u00e0m cho ch\u00fang m\u1edf r\u1ed9ng. N\u00f3 k\u00edch ho\u1ea1t pentan b\u00ean trong th\u00f4ng qua nhi\u1ec7t v\u00e0 \u00e1p su\u1ea5t \u1ed5n \u0111\u1ecbnh. H\u1ea1t l\u1edbn h\u01a1n 20-50 l\u1ea7n. Ch\u00fang t\u1ea1o th\u00e0nh b\u1ecdt t\u1ebf b\u00e0o \u0111\u00f3ng ho\u00e0n h\u1ea3o cho c\u00e1c m\u00f4 h\u00ecnh. Trong c\u00f4ng vi\u1ec7c b\u1ecdt b\u1ecb m\u1ea5t, h\u1ea1t m\u1edf r\u1ed9ng th\u01b0\u1eddng \u0111\u1ea1t m\u1eadt \u0111\u1ed9 20-30 kg \/ m\u00b3. \u0110i\u1ec3m ng\u1ecdt th\u01b0\u1eddng n\u1eb1m \u1edf m\u1ee9c 22-28 kg \/ m\u00b3. Ph\u1ea1m vi n\u00e0y c\u00e2n b\u1eb1ng s\u1ee9c m\u1ea1nh m\u00f4 h\u00ecnh v\u1edbi \u0111\u1ed1t s\u1ea1ch. Ngay c\u1ea3 s\u1ef1 m\u1edf r\u1ed9ng c\u0169ng ng\u0103n ch\u1eb7n bi\u1ebfn d\u1ea1ng, k\u1ebft n\u1ed1i k\u00e9m ho\u1eb7c t\u00fai kh\u00ed trong \u0111\u00fac cu\u1ed1i c\u00f9ng.<\/p>\n<h2 id=\"key-components-of-an-eps-pre-expander-machine\"><strong>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u1ed9t m\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS<\/strong><\/h2>\n<p>M\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS hi\u1ec7n \u0111\u1ea1i bao g\u1ed3m m\u1ed9t bu\u1ed3ng m\u1edf r\u1ed9ng ni\u00eam phong, \u0111\u1ea7u v\u00e0o h\u01a1i n\u01b0\u1edbc v\u1edbi van \u0111i\u1ec1u khi\u1ec3n cho \u00e1p su\u1ea5t ch\u00ednh x\u00e1c (th\u01b0\u1eddng l\u00e0 4-8 bar), v\u00e0 s\u01b0\u1edfi \u1ea5m \u0111i\u1ec7n t\u1eeb \u0111\u1ec3 gi\u1eef nhi\u1ec7t th\u00f9ng g\u1ea7n 98 \u00b0 C. H\u1ed7n h\u1ee3p n\u00e0y gi\u1eef cho m\u1ecdi th\u1ee9 kh\u00f4 v\u00e0 ng\u0103n ch\u1eb7n h\u1ea1t \u01b0\u1edbt.<\/p>\n<p>L\u1ed9n c\u00e1nh tay ph\u1ed5 bi\u1ebfn h\u1ea1t \u0111\u1ed3ng \u0111\u1ec1u. Ph\u00e1t th\u1ea3i d\u01b0\u1edbi c\u00f9ng cho ph\u00e9p h\u1ea1t ra nhanh ch\u00f3ng v\u00e0 ho\u00e0n to\u00e0n \u0111\u1ec3 tr\u00e1nh c\u1ee5m. C\u00e1c b\u1ed9 ph\u1eadn sau n\u00e0y bao g\u1ed3m di chuy\u1ec3n gi\u01b0\u1eddng kh\u00f4 kh\u00f4ng kh\u00ed v\u00e0 silo l\u00e3o h\u00f3a v\u1edbi m\u00e0n h\u00ecnh l\u1eafc \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c m\u1ea3nh x\u1ea5u. \u0110i\u1ec1u khi\u1ec3n PLC, c\u00e2n \u0111i\u1ec7n t\u1eed (ch\u00ednh x\u00e1c \u00b1 1 gram) v\u00e0 xem t\u1eeb xa cho ph\u00e9p ch\u1ea1y t\u1ef1 \u0111\u1ed9ng \u0111\u1ea7y \u0111\u1ee7, c\u00e1c c\u00f4ng th\u1ee9c n\u1ea5u \u0103n \u0111\u01b0\u1ee3c l\u01b0u v\u00e0 c\u00e1c b\u01b0\u1edbc c\u00f3 th\u1ec3 theo d\u00f5i \u0111\u01b0\u1ee3c.<\/p>\n<h2 id=\"how-does-an-eps-pre-expander-machine-work-step-by-step-process\"><strong>M\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? Qu\u00e1 tr\u00ecnh t\u1eebng b\u01b0\u1edbc<\/strong><\/h2>\n<p>M\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS bi\u1ebfn h\u1ea1t th\u00f4 th\u00e0nh b\u1ecdt m\u1edf r\u1ed9ng \u1ed5n \u0111\u1ecbnh th\u00f4ng qua m\u1ed9t chu k\u1ef3 t\u1ef1 \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh.<\/p>\n<ol type=\"1\">\n<li>T\u1ea3i h\u1ea1t th\u00f4 h\u1ea1t EPS th\u00f4 v\u1edbi t\u1ea3i pentan v\u00e0o bu\u1ed3ng b\u1eb1ng c\u00e1ch t\u1ef1 \u0111\u1ed9ng cung c\u1ea5p ho\u1eb7c c\u00e2n ch\u00ednh x\u00e1c.<\/li>\n<li>S\u01b0\u1edfi \u1ea5m tr\u01b0\u1edbc v\u00e0 \u00e1p su\u1ea5t bu\u1ed3ng \u0111\u00f3ng c\u1eeda. H\u01a1i n\u01b0\u1edbc \u00e1p su\u1ea5t th\u1ea5p b\u1eaft \u0111\u1ea7u \u0111i\u1ec1u ki\u1ec7n h\u1ea1t. Sau \u0111\u00f3 \u00e1p l\u1ef1c to\u00e0n di\u1ec7n \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng. Nhi\u1ec7t \u0111i\u1ec7n t\u1eeb gi\u1eef nhi\u1ec7t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y ng\u0103n ch\u1eb7n s\u1ef1 t\u00edch t\u1ee5 n\u01b0\u1edbc.<\/li>\n<li>H\u01a1i n\u01b0\u1edbc pha m\u1edf r\u1ed9ng (90-110 \u00b0 C) l\u00e0m m\u1ec1m v\u1ecf polystyrene. Pentane bi\u1ebfn th\u00e0nh h\u01a1i n\u01b0\u1edbc. \u0110i\u1ec1u n\u00e0y x\u00e2y d\u1ef1ng \u00e1p l\u1ef1c b\u00ean trong th\u1ed5i h\u1ea1t th\u00e0nh c\u00e1c t\u1ebf b\u00e0o nh\u1ecf. L\u1ed9n gi\u1eef cho s\u1ef1 ph\u00e1t tri\u1ec3n th\u1eadm ch\u00ed. Th\u1eddi gian chu k\u1ef3 v\u00e0 \u00e1p su\u1ea5t thi\u1ebft l\u1eadp m\u1eadt \u0111\u1ed9 cu\u1ed1i c\u00f9ng - \u00e1p su\u1ea5t d\u00e0i h\u01a1n ho\u1eb7c m\u1ea1nh h\u01a1n l\u00e0m cho m\u1eadt \u0111\u1ed9 th\u1ea5p h\u01a1n.<\/li>\n<li>\u1ed5n \u0111\u1ecbnh v\u00e0 x\u1ea3 h\u01a1i n\u01b0\u1edbc d\u1eebng l\u1ea1i. L\u1ed7 th\u00f4ng gi\u00f3 \u00e1p su\u1ea5t. Ph\u00e1t th\u1ea3i d\u01b0\u1edbi b\u1eafn h\u1ea1t ra nhanh ch\u00f3ng. Kh\u00f4ng kh\u00ed n\u00e9n l\u00e0m m\u00e1t bu\u1ed3ng \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 ph\u00e1t tri\u1ec3n qu\u00e1 m\u1ee9c.<\/li>\n<li>H\u1ea1t tr\u01b0\u1edfng th\u00e0nh \u0111i \u0111\u1ebfn gi\u01b0\u1eddng kh\u00f4ng kh\u00ed ho\u1eb7c silo \u0111\u1ec3 l\u00e0m m\u00e1t v\u00e0 l\u1ea5p \u0111\u1ea7y kh\u00f4ng kh\u00ed v\u00e0o c\u00e1c t\u1ebf b\u00e0o. L\u00e3o h\u00f3a (th\u01b0\u1eddng l\u00e0 8-72 gi\u1edd, th\u01b0\u1eddng l\u00e0 24-48 gi\u1edd) k\u00edch th\u01b0\u1edbc \u1ed5n \u0111\u1ecbnh. H\u1ea1t t\u01b0\u01a1i v\u1eabn c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n m\u1ed9t ch\u00fat n\u1ebfu kh\u00f4ng gi\u00e0 \u0111\u00fang. M\u00e0n h\u00ecnh l\u1eafc b\u1eaft l\u1ed7i.<\/li>\n<\/ol>\n<p>H\u1ec7 th\u1ed1ng PLC ch\u1ea1y t\u1ea5t c\u1ea3 c\u00e1c b\u01b0\u1edbc. Van \u0111i\u1ec1u khi\u1ec3n gi\u1eef m\u1ecdi th\u1ee9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n<h2 id=\"process-parameters-and-density-control-in-eps-pre-expansion\"><strong>C\u00e1c th\u00f4ng s\u1ed1 quy tr\u00ecnh v\u00e0 ki\u1ec3m so\u00e1t m\u1eadt \u0111\u1ed9 trong EPS Pre Expansion<\/strong><\/h2>\n<p>Ki\u1ec3m so\u00e1t m\u1eadt \u0111\u1ed9 r\u1ea5t quan tr\u1ecdng. N\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 c\u1ee9ng c\u1ee7a m\u00f4 h\u00ecnh, t\u1ed1c \u0111\u1ed9 \u0111\u1ed1t ch\u00e1y v\u00e0 d\u00f2ng ch\u1ea3y kim lo\u1ea1i trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t. M\u1eadt \u0111\u1ed9 m\u1ee5c ti\u00eau c\u00e2n b\u1eb1ng c\u00e1c m\u00f4 h\u00ecnh m\u1ea1nh m\u1ebd (cao h\u01a1n cho c\u00e1c h\u00ecnh d\u1ea1ng chi ti\u1ebft) v\u1edbi h\u01a1i d\u1ec5 d\u00e0ng (th\u1ea5p h\u01a1n cho c\u00e1c khu v\u1ef1c m\u1ecfng).<\/p>\n<p>C\u00e0i \u0111\u1eb7t ch\u00ednh bao g\u1ed3m:<\/p>\n<ul>\n<li>\u00c1p su\u1ea5t h\u01a1i n\u01b0\u1edbc (4-8 bar) v\u00e0 th\u1eddi gian: Cao h\u01a1n ho\u1eb7c d\u00e0i h\u01a1n l\u00e0m gi\u1ea3m m\u1eadt \u0111\u1ed9.<\/li>\n<li>Nhi\u1ec7t \u0111\u1ed9 gi\u1eef (98-110 \u00b0 C): D\u1eebng t\u0103ng tr\u01b0\u1edfng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u.<\/li>\n<li>Th\u1eddi gian \u1edf l\u1ea1i h\u1ea1t: \u0110i\u1ec1u ch\u1ec9nh cho t\u1ef7 l\u1ec7 m\u1edf r\u1ed9ng mong mu\u1ed1n.<\/li>\n<li>Tr\u1ecdng l\u01b0\u1ee3ng \u0111i\u1ec7n t\u1eed: Gi\u1eef \u0111\u1ea7u v\u00e0o ch\u00ednh x\u00e1c v\u1edbi s\u1ef1 kh\u00e1c bi\u1ec7t \u00b1 1 gram.<\/li>\n<\/ul>\n<p>Ngay c\u1ea3 m\u1eadt \u0111\u1ed9 c\u0169ng ng\u0103n ch\u1eb7n c\u00e1c \u0111i\u1ec3m y\u1ebfu ho\u1eb7c m\u1ea1nh g\u00e2y ra c\u00e1c n\u1ebfp g\u1ea5p ho\u1eb7c bong b\u00f3ng. M\u00e1y n\u00e2ng cao gi\u1eef 20-30 kg \/ m\u00b3 v\u1edbi h\u1ea1t tr\u00f2n, to\u00e0n b\u1ed9<img decoding=\"async\" class=\"aligncenter size-full wp-image-4899\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/EPS-Pre-Expander-Machine-in-Lost-Foam-Casting-Process.webp\" alt=\"M\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS trong qu\u00e1 tr\u00ecnh \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t\" width=\"1024\" height=\"768\" srcset=\"https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/EPS-Pre-Expander-Machine-in-Lost-Foam-Casting-Process.webp 1024w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/EPS-Pre-Expander-Machine-in-Lost-Foam-Casting-Process-300x225.webp 300w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/EPS-Pre-Expander-Machine-in-Lost-Foam-Casting-Process-768x576.webp 768w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/EPS-Pre-Expander-Machine-in-Lost-Foam-Casting-Process-16x12.webp 16w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/03\/EPS-Pre-Expander-Machine-in-Lost-Foam-Casting-Process-600x450.webp 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h2 id=\"importance-of-eps-pre-expander-machine-in-lost-foam-casting-process\"><strong>T\u1ea7m quan tr\u1ecdng c\u1ee7a m\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS trong qu\u00e1 tr\u00ecnh \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t<\/strong><\/h2>\n<p>Ch\u1ea5t l\u01b0\u1ee3ng m\u00f4 h\u00ecnh quy\u1ebft \u0111\u1ecbnh th\u00e0nh c\u00f4ng \u0111\u00fac. Ph\u00e1t tri\u1ec3n tr\u01b0\u1edbc t\u1ed1t l\u00e0m cho h\u1ea1t m\u1ecbn, kh\u00f4ng b\u1ecb ph\u00e1 v\u1ee1. Ch\u00fang khu\u00f4n s\u1ea1ch, gi\u1eef l\u1edbp ph\u1ee7 t\u1ed1t v\u00e0 \u0111\u1ed1t ch\u00e1y m\u00e0 kh\u00f4ng \u0111\u1ec3 l\u1ea1i l\u1ed7 kh\u00ed, l\u1ea5p \u0111\u1ea7y x\u1ea5u ho\u1eb7c c\u00e1c m\u1ea3nh b\u1ecb m\u1eafc k\u1eb9t.<\/p>\n<p>M\u1eadt \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cho ph\u00e9p l\u1eb7p l\u1ea1i k\u1ebft qu\u1ea3 t\u1ed1t trong s\u1ea3n xu\u1ea5t kh\u1ed1i l\u01b0\u1ee3ng cao c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn \u00f4 t\u00f4, tr\u01b0\u1eddng h\u1ee3p m\u00e1y m\u00f3c v\u00e0 c\u00e1c m\u1ea3nh ph\u1ee9c t\u1ea1p. N\u00f3 c\u1eaft gi\u1ea3m ch\u1ea5t th\u1ea3i, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 t\u0103ng s\u1ea3n l\u01b0\u1ee3ng \u0111\u00fac.<\/p>\n<h2 id=\"advantages-of-advanced-eps-pre-expander-machines\"><strong>L\u1ee3i th\u1ebf c\u1ee7a m\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS ti\u00ean ti\u1ebfn<\/strong><\/h2>\n<p>M\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS m\u1edbi mang \u0111\u1ebfn:<\/p>\n<ul>\n<li>B\u1ecdt \u0111i\u1ec7n t\u1eeb-h\u01a1i n\u01b0\u1edbc lai \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh, ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t h\u00e0ng \u0111\u1ea7u m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 gi\u00e1n \u0111o\u1ea1n.<\/li>\n<li>Ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c th\u00f4ng qua PLC, van v\u00e0 ki\u1ec3m tra t\u1eeb xa.<\/li>\n<li>Ph\u00e1t th\u1ea3i \u0111\u00e1y nhanh v\u1edbi thi\u1ebft k\u1ebf ch\u1ed1ng c\u1ee5m.<\/li>\n<li>Ph\u00f9 h\u1ee3p v\u1edbi EPS, copolymer v\u00e0 nh\u1ef1a \u0111\u1eb7c bi\u1ec7t.<\/li>\n<li>An to\u00e0n t\u00edch h\u1ee3p nh\u01b0 b\u1ea3o v\u1ec7 r\u00f2 r\u1ec9 v\u00e0 m\u1ea5t \u0111i\u1ec7n.<\/li>\n<\/ul>\n<p>Nh\u1eefng t\u00ednh n\u0103ng n\u00e0y l\u00e0m t\u0103ng s\u1ea3n l\u01b0\u1ee3ng, gi\u1ea3m chi ph\u00ed v\u00e0 c\u1ea3i thi\u1ec7n ni\u1ec1m tin m\u00f4 h\u00ecnh trong c\u00f4ng vi\u1ec7c b\u1ecdt b\u1ecb m\u1ea5t kh\u00f3 kh\u0103n.<\/p>\n<h2 id=\"challenges-and-best-practices-in-eps-pre-expansion-for-lost-foam-casting\"><strong>Th\u00e1ch th\u1ee9c v\u00e0 th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t trong EPS Pre-Expansion cho Lost Foam Casting<\/strong><\/h2>\n<p>Nh\u1eefng th\u00e1ch th\u1ee9c bao g\u1ed3m c\u00f3 \u0111\u01b0\u1ee3c h\u1ea1t ngang b\u1eb1ng, ki\u1ec3m so\u00e1t l\u00e3o h\u00f3a \u0111\u1ec3 tr\u00e1nh thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc v\u00e0 \u0111i\u1ec1u ch\u1ec9nh c\u00e1c c\u00e0i \u0111\u1eb7t cho c\u00e1c kim lo\u1ea1i kh\u00e1c nhau (v\u00ed d\u1ee5: nh\u00f4m so v\u1edbi s\u1eaft). Qu\u00e1 nhi\u1ec1u s\u1ef1 m\u1edf r\u1ed9ng l\u00e0m suy y\u1ebfu c\u00e1c m\u00f4 h\u00ecnh. Qu\u00e1 \u00edt l\u00e0m cho vi\u1ec7c tham gia ngh\u00e8o.<\/p>\n<p>C\u00e1c b\u01b0\u1edbc t\u1ed1t nh\u1ea5t bao g\u1ed3m ki\u1ec3m tra quy m\u00f4 th\u01b0\u1eddng xuy\u00ean, \u0111\u1ed3ng h\u1ed3 ch\u1ea5t l\u01b0\u1ee3ng h\u01a1i n\u01b0\u1edbc v\u00e0 c\u00e1c quy t\u1eafc l\u00e3o h\u00f3a ti\u00eau chu\u1ea9n (th\u01b0\u1eddng l\u00e0 24-72 gi\u1edd). C\u00e1c h\u1ed3 s\u01a1 d\u1eef li\u1ec7u gi\u00fap theo d\u00f5i v\u00e0 gi\u1eef ch\u1ea5t l\u01b0\u1ee3ng nh\u01b0 nhau.<\/p>\n<h2 id=\"integration-of-eps-pre-expansion-with-downstream-lost-foam-steps\"><strong>T\u00edch h\u1ee3p EPS Pre-Expansion v\u1edbi Downstream Lost Foam Steps<\/strong><\/h2>\n<p>C\u00e1c h\u1ea1t m\u1edf r\u1ed9ng chuy\u1ec3n sang \u0111\u00fac. H\u1ecd l\u1ea5p \u0111\u1ea7y khu\u00f4n nh\u00f4m v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u h\u01a1i n\u01b0\u1edbc h\u01a1n \u0111\u1ec3 tham gia v\u00e0o c\u00e1c m\u00f4 h\u00ecnh r\u1eafn. C\u00e1c m\u1eabu c\u00f3 \u0111\u01b0\u1ee3c l\u1edbp ph\u1ee7 ch\u1ed1ng ch\u00e1y, nh\u00f3m th\u00e0nh c\u00e1c c\u1ee5m, ng\u1ed3i trong c\u00e1t l\u1ecfng l\u1ecfng v\u00e0 ki\u1ec3m so\u00e1t kim lo\u1ea1i n\u00f3ng ch\u1ea3y. T\u1ed1t tr\u01b0\u1edbc m\u1edf r\u1ed9ng \u0111\u1ea3m b\u1ea3o h\u1ea1t tham gia s\u1ee9c m\u1ea1nh. N\u00f3 c\u1eaft l\u1ed7 m\u1edf \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 kim lo\u1ea1i v\u00e0 s\u1ef1 h\u00ecnh th\u00e0nh l\u1ed7i.<\/p>\n<h2 id=\"conclusion\"><strong>Ph\u1ea7n k\u1ebft lu\u1eadn<\/strong><\/h2>\n<p>M\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS li\u00ean k\u1ebft s\u1ef1 thay \u0111\u1ed5i nguy\u00ean li\u1ec7u th\u00f4 v\u1edbi nhu c\u1ea7u ch\u00ednh x\u00e1c c\u1ee7a \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t. M\u1edf r\u1ed9ng c\u1ea9n th\u1eadn v\u00e0 ki\u1ec3m so\u00e1t m\u1eadt \u0111\u1ed9 d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n.<\/p>\n<p><a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/\"><strong>C\u00f4ng ngh\u1ec7 OC<\/strong><\/a>, l\u00e0m tuy\u1ec7t v\u1eddi nh\u01b0 m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 nh\u00e0 cung c\u1ea5p c\u1ee7a cao c\u1ea5p th\u00f4ng minh m\u1ea5t b\u1ecdt \u0111\u00fac b\u00e1nh r\u0103ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong khu v\u1ef1c tr\u1eafng. C\u00e1c m\u00f4 h\u00ecnh bao g\u1ed3m m\u00e1y t\u1ea1o b\u1ecdt ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng v\u1edbi gi\u01b0\u1eddng kh\u00f4 kh\u00f4ng kh\u00ed, ch\u1eb3ng h\u1ea1n nh\u01b0 OC-YF-Y450 (1650x1200x2680 mm, dung l\u01b0\u1ee3ng 40kg) v\u00e0 OC-YF-Y550 (1750x1250x3450 mm, dung l\u01b0\u1ee3ng 60kg). Ch\u00fang c\u00f3 b\u1ecdt lai, PLC t\u1ef1 \u0111\u1ed9ng, x\u1ea3 d\u01b0\u1edbi v\u00e0 \u0111i\u1ec1u ch\u1ec9nh t\u1eeb xa.<\/p>\n<h2 id=\"faq\"><strong>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/strong><\/h2>\n<h3 id=\"what-density-range-is-ideal-for-eps-beads-in-lost-foam-casting\"><strong>Ph\u1ea1m vi m\u1eadt \u0111\u1ed9 n\u00e0o l\u00e0 l\u00fd t\u01b0\u1edfng cho h\u1ea1t EPS trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t? <\/strong><\/h3>\n<p>Th\u00f4ng th\u01b0\u1eddng l\u00e0 20-30 kg \/ m\u00b3, v\u1edbi 22-28 kg \/ m\u00b3 ph\u1ed5 bi\u1ebfn \u0111\u1ec3 c\u00e2n b\u1eb1ng s\u1ee9c m\u1ea1nh m\u00f4 h\u00ecnh v\u00e0 hi\u1ec7u qu\u1ea3 bay h\u01a1i.<\/p>\n<h3 id=\"why-is-maturation-necessary-after-pre-expansion\"><strong>T\u1ea1i sao s\u1ef1 tr\u01b0\u1edfng th\u00e0nh c\u1ea7n thi\u1ebft sau khi m\u1edf r\u1ed9ng tr\u01b0\u1edbc? <\/strong><\/h3>\n<p>C\u00e1c h\u1ea1t m\u1edbi m\u1edf r\u1ed9ng v\u1eabn kh\u00f4ng \u1ed5n \u0111\u1ecbnh v\u00e0 ti\u1ebfp t\u1ee5c m\u1edf r\u1ed9ng nh\u1eb9; s\u1ef1 tr\u01b0\u1edfng th\u00e0nh cho ph\u00e9p khu\u1ebfch t\u00e1n kh\u00f4ng kh\u00ed v\u00e0 \u1ed5n \u0111\u1ecbnh chi\u1ec1u.<\/p>\n<h3 id=\"how-does-steam-pressure-affect-bead-density\"><strong>\u00c1p su\u1ea5t h\u01a1i n\u01b0\u1edbc \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1eadt \u0111\u1ed9 h\u1ea1t nh\u01b0 th\u1ebf n\u00e0o? <\/strong><\/h3>\n<p>\u00c1p su\u1ea5t cao h\u01a1n ho\u1eb7c ti\u1ebfp x\u00fac l\u00e2u h\u01a1n l\u00e0m gi\u1ea3m m\u1eadt \u0111\u1ed9 b\u1eb1ng c\u00e1ch t\u0103ng s\u1ef1 m\u1edf r\u1ed9ng.<\/p>\n<h3 id=\"what-causes-dead-beads-in-pre-expansion\"><strong>\u0110i\u1ec1u g\u00ec g\u00e2y ra &#8220; h\u1ea1t ch\u1ebft&#8221; tr\u01b0\u1edbc s\u1ef1 m\u1edf r\u1ed9ng? <\/strong><\/h3>\n<p>\u0110\u1ed9 \u1ea9m d\u01b0 th\u1eeba ho\u1eb7c s\u01b0\u1edfi \u1ea5m kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u; C\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec7n t\u1eeb-h\u01a1i n\u01b0\u1edbc lai ng\u0103n ch\u1eb7n \u0111i\u1ec1u n\u00e0y.<\/p>\n<h3 id=\"how-accurate-is-density-control-in-advanced-machines\"><strong>Ki\u1ec3m so\u00e1t m\u1eadt \u0111\u1ed9 ch\u00ednh x\u00e1c nh\u01b0 th\u1ebf n\u00e0o trong m\u00e1y ti\u00ean ti\u1ebfn? <\/strong><\/h3>\n<p>Tr\u1ecdng l\u01b0\u1ee3ng \u0111i\u1ec7n t\u1eed \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 l\u1ec7ch trong v\u00f2ng \u00b1 1 gram, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng l\u1eb7p l\u1ea1i cao.<\/p>\n<h2 id=\"partner-with-a-trusted-manufacturer-and-supplier-for-lost-foam-casting-equipment\"><strong>\u0110\u1ed1i t\u00e1c v\u1edbi m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady cho thi\u1ebft b\u1ecb \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t<\/strong><\/h2>\n<p>C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00fac, nh\u00e0 khai th\u00e1c nh\u00e0 \u0111\u00fac v\u00e0 nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb t\u00ecm ki\u1ebfm m\u00e1y m\u1edf r\u1ed9ng tr\u01b0\u1edbc EPS \u0111\u00e1ng tin c\u1eady n\u00ean li\u00ean h\u1ec7 v\u1edbi OC Technology. L\u00e0 m\u1ed9t nh\u00e0 m\u00e1y chuy\u00ean chuy\u00ean v\u1ec1 c\u00e1c gi\u1ea3i ph\u00e1p b\u1ecdt b\u1ecb m\u1ea5t, OC Technology cung c\u1ea5p thi\u1ebft b\u1ecb s\u1eb5n t\u1ea1o b\u1ecdt ch\u00ednh x\u00e1c ph\u00f9 h\u1ee3p v\u1edbi hi\u1ec7u qu\u1ea3 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng. <a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/lien-he\/\"><strong>Y\u00eau c\u1ea7u<\/strong><\/a> via Tel: +86 15988479417 or Email: <a style=\"text-decoration: underline;\" href=\"mailto:zyh@oc-epc.com\">zyh@oc-epc.com<\/a> cho t\u01b0 v\u1ea5n k\u1ef9 thu\u1eadt, c\u1ea5u h\u00ecnh t\u00f9y ch\u1ec9nh ho\u1eb7c t\u1ed1i \u01b0u h\u00f3a d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t.<\/p>","protected":false},"excerpt":{"rendered":"<p>The EPS Pre Expander Machine plays a central role in lost foam casting. It prepares expanded polystyrene (EPS) beads that form the patterns which disappear when hot metal pours in. This step requires careful control over bead growth to get even density, strong shapes, and clean castings without flaws. Introduction to Lost Foam Casting and [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4902,"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":[160,161],"tags":[],"class_list":["post-4895","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news","category-news-blog"],"acf":[],"jetpack_publicize_connections":[],"_links":{"self":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4895","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=4895"}],"version-history":[{"count":3,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4895\/revisions"}],"predecessor-version":[{"id":4906,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4895\/revisions\/4906"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media\/4902"}],"wp:attachment":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media?parent=4895"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/categories?post=4895"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/tags?post=4895"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}