{"id":4939,"date":"2026-04-09T00:00:40","date_gmt":"2026-04-08T16:00:40","guid":{"rendered":"https:\/\/www.oc-epc.com\/?p=4939"},"modified":"2026-04-08T12:22:01","modified_gmt":"2026-04-08T04:22:01","slug":"ky-thuat-rong-mot-phan-tich-toan-dien-cua-duc-bot-bi-mat-cho-duc-rong-lon","status":"publish","type":"post","link":"https:\/\/www.oc-epc.com\/vi\/news-blog\/industry-news\/engineering-the-void-a-comprehensive-analysis-of-lost-foam-casting-for-large-hollow-castings\/","title":{"rendered":"K\u1ef9 thu\u1eadt r\u1ed7ng m\u1ed9t ph\u00e2n t\u00edch to\u00e0n di\u1ec7n v\u1ec1 \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t cho \u0111\u00fac r\u1ed7ng l\u1edbn"},"content":{"rendered":"<h2 id=\"introduction-to-lost-foam-casting-for-complex-components\"><strong>Gi\u1edbi thi\u1ec7u v\u1ec1 Lost Foam Casting cho c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ee9c t\u1ea1p<\/strong><\/h2>\n<p>C\u00e1c <a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/cac-san-pham\/\"><strong>M\u1ea5t b\u1ecdt \u0111\u00fac<\/strong><\/a> quy tr\u00ecnh l\u00e0 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn l\u1edbn trong c\u00f4ng ngh\u1ec7 \u0111\u00fac. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ho\u1ea1t \u0111\u1ed9ng \u0111\u1eb7c bi\u1ec7t t\u1ed1t cho c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ee9c t\u1ea1p v\u00e0 quy m\u00f4 l\u1edbn. \u00dd t\u01b0\u1edfng c\u01a1 b\u1ea3n li\u00ean quan \u0111\u1ebfn m\u1ed9t m\u00f4 h\u00ecnh b\u1ecdt hy sinh m\u00e0 kim lo\u1ea1i n\u00f3ng ch\u1ea3y thay th\u1ebf. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y mang l\u1ea1i s\u1ef1 t\u1ef1 do thi\u1ebft k\u1ebf tuy\u1ec7t v\u1eddi. N\u00f3 lo\u1ea1i b\u1ecf s\u1ef1 c\u1ea7n thi\u1ebft cho c\u00e1c l\u00f5i truy\u1ec1n th\u1ed1ng v\u00e0 c\u00e1c thi\u1ebft l\u1eadp khu\u00f4n ph\u1ee9c t\u1ea1p. \u0110\u1ed1i v\u1edbi \u0111\u00fac lo\u1ea1i h\u1ed9p r\u1ed7ng l\u1edbn nh\u01b0 gi\u01b0\u1eddng m\u00e1y c\u00f4ng c\u1ee5, h\u1ed9p s\u1ed1 ho\u1eb7c khung c\u1ea5u tr\u00fac, quy tr\u00ecnh l\u00e0m cho c\u00e1c b\u01b0\u1edbc s\u1ea3n xu\u1ea5t \u0111\u01a1n gi\u1ea3n h\u01a1n. N\u00f3 c\u1eaft gi\u1ea3m chi ph\u00ed t\u1ea1o m\u1eabu cho c\u00e1c chuy\u1ebfn ch\u1ea1y m\u1ed9t l\u1ea7n ho\u1eb7c kh\u1ed1i l\u01b0\u1ee3ng th\u1ea5p. N\u00f3 c\u0169ng r\u00fat ng\u1eafn chu k\u1ef3 s\u1ea3n xu\u1ea5t t\u1ed5ng th\u1ec3. Tuy nhi\u00ean, vi\u1ec7c \u00e1p d\u1ee5ng c\u1ee7a <a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/ve\/\"><strong>M\u1ea5t b\u1ecdt \u0111\u00fac<\/strong><\/a> cho nh\u1eefng h\u00ecnh d\u1ea1ng kh\u00f3 kh\u0103n n\u00e0y mang l\u1ea1i m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c. Nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng. Nh\u1eefng khuy\u1ebft t\u1eadt ph\u1ed5 bi\u1ebfn bao g\u1ed3m s\u1ef1 s\u1ee5p \u0111\u1ed5 khu\u00f4n, chuy\u1ec3n \u0111\u1ed9ng t\u01b0\u1eddng khu\u00f4n ho\u1eb7c s\u01b0ng, v\u00e0 ch\u1ea1y sai. Th\u00e0nh c\u00f4ng th\u1ef1c s\u1ef1 c\u1ea7n m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p k\u1ef9 thu\u1eadt c\u1ea9n th\u1eadn. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ph\u1ea3i \u0111\u1ed1i ph\u00f3 v\u1edbi v\u1eadt l\u00fd \u0111\u1eb7c bi\u1ec7t trong c\u00f4ng vi\u1ec7c.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-4946\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/Lost-Foam-Casting-for-Large-Hollow-Castings.webp\" alt=\"\u0110\u00fac b\u1ecdt b\u1ecb m\u1ea5t cho \u0111\u00fac r\u1ed7ng l\u1edbn\" width=\"600\" height=\"400\" srcset=\"https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/Lost-Foam-Casting-for-Large-Hollow-Castings.webp 600w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/Lost-Foam-Casting-for-Large-Hollow-Castings-300x200.webp 300w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/Lost-Foam-Casting-for-Large-Hollow-Castings-18x12.webp 18w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2 id=\"core-challenges-in-hollow-cavity-castings\"><strong>Th\u00e1ch th\u1ee9c c\u1ed1t l\u00f5i trong Hollow Cavity Castings<\/strong><\/h2>\n<p>Th\u00e1ch th\u1ee9c ch\u00ednh \u0111\u1ebfn t\u1eeb khoang r\u1ed7ng l\u1edbn. Trong qu\u00e1 tr\u00ecnh \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t, m\u00f4 h\u00ecnh b\u1ecdt bi\u1ebfn th\u00e0nh kh\u00ed khi n\u00f3 g\u1eb7p kim lo\u1ea1i n\u00f3ng ch\u1ea3y. Nh\u1eefng kh\u00ed n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf nhanh ch\u00f3ng th\u00f4ng qua l\u1edbp ph\u1ee7 v\u00e0 c\u00e1t kh\u00f4 xung quanh n\u00f3. C\u00e1t nh\u1eadn \u0111\u01b0\u1ee3c n\u00e9n t\u1eeb ch\u00e2n kh\u00f4ng \u00e1p d\u1ee5ng. Trong \u0111\u00fac r\u1eafn, ch\u00e2n kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean khu\u00f4n. Tuy nhi\u00ean, trong \u0111\u00fac r\u1ed7ng, khoang b\u00ean trong ch\u1ec9 c\u00f3 ch\u00e2n kh\u00f4ng gi\u00e1n ti\u1ebfp v\u00e0 th\u01b0\u1eddng y\u1ebfu. T\u00ecnh hu\u1ed1ng n\u00e0y t\u1ea1o ra m\u1ed9t s\u1ef1 kh\u00e1c bi\u1ec7t \u00e1p l\u1ef1c quan tr\u1ecdng. C\u00e1t b\u00ean ngo\u00e0i tr\u1edf n\u00ean \u0111\u00f3ng g\u00f3i ch\u1eb7t ch\u1ebd d\u01b0\u1edbi ch\u00e2n kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7. C\u00e1t b\u00ean trong tr\u1ea3i nghi\u1ec7m ch\u00e2n kh\u00f4ng hi\u1ec7u qu\u1ea3 th\u1ea5p h\u01a1n. K\u1ebft qu\u1ea3 l\u00e0 c\u00e1t b\u00ean trong cho th\u1ea5y \u0111\u1ed9 b\u1ec1n gi\u1ea3m v\u00e0 v\u1ea5n \u0111\u1ec1 v\u1edbi \u0111\u1ed9 th\u1ea5m. Nh\u1eefng \u0111i\u1ec1u ki\u1ec7n n\u00e0y k\u1ebft h\u1ee3p v\u1edbi \u00e1p su\u1ea5t \u0111\u1ed9ng t\u1eeb kim lo\u1ea1i \u0111i\u1ec1n v\u00e0 b\u1ecdt ph\u00e1 h\u1ee7y. H\u1ecd chu\u1ea9n b\u1ecb cho c\u00e1c v\u1ea5n \u0111\u1ec1 x\u1ea3y ra.<\/p>\n<p>C\u01a1 h\u1ecdc c\u01a1 b\u1ea3n t\u1eadp trung v\u00e0o c\u00e1c l\u1ef1c t\u00e1c \u0111\u1ed9ng tr\u00ean kh\u1ed1i l\u01b0\u1ee3ng c\u00e1t b\u00ean trong. \u0110\u1ec3 c\u00e1t gi\u1eef \u1ed5n \u0111\u1ecbnh, l\u1ef1c r\u00f2ng ph\u1ea3i \u1edf m\u1ee9c 0 ho\u1eb7c \u0111i\u1ec3m xu\u1ed1ng. L\u1ef1c h\u01b0\u1edbng l\u00ean ch\u00ednh l\u00e0 \u0111\u1ed9 n\u1ed5i t\u1eeb kim lo\u1ea1i n\u00f3ng ch\u1ea3y. C\u00e1c l\u1ef1c ch\u1ed1ng l\u1ea1i n\u00f3 bao g\u1ed3m s\u1ee9c m\u1ea1nh c\u1eaft c\u00e1t t\u1ea1i c\u00e1c khu v\u1ef1c ti\u1ebfp x\u00fac v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng c\u00e1t. S\u1ee9c m\u1ea1nh c\u1eaft d\u1ef1a m\u1ea1nh m\u1ebd v\u00e0o ch\u00e2n kh\u00f4ng b\u00ean trong hi\u1ec7u qu\u1ea3 v\u00e0 n\u00e9n. Ch\u00e2n kh\u00f4ng b\u00ean trong y\u1ebfu l\u00e0m gi\u1ea3m s\u1ee9c m\u1ea1nh c\u1eaft r\u1ea5t nhi\u1ec1u. \u00c1p su\u1ea5t nhi\u1ec7t ph\u00e2n b\u1ecdt v\u00e0 \u00e1p su\u1ea5t t\u0129nh kim lo\u1ea1i th\u00eam l\u1ef1c t\u1ea1o ra s\u1ef1 b\u1ea5t \u1ed5n. S\u1ef1 \u1ed5n \u0111\u1ecbnh \u0111\u00f2i h\u1ecfi c\u00e1c l\u1ef1c ch\u1ed1ng l\u1ea1i v\u1eabn l\u1edbn h\u01a1n c\u00e1c l\u1ef1c ph\u00e1 v\u1ee1 l\u00ean. Y\u00eau c\u1ea7u n\u00e0y nh\u1ea5n m\u1ea1nh nhu c\u1ea7u t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1t c\u00e0ng nhi\u1ec1u c\u00e0ng t\u1ed1t v\u00e0 gi\u1ea3m \u00e1p su\u1ea5t gi\u00e1n \u0111o\u1ea1n.<\/p>\n<h2 id=\"critical-defects-and-their-root-causes\"><strong>Nh\u1eefng khuy\u1ebft t\u1eadt quan tr\u1ecdng v\u00e0 nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a ch\u00fang<\/strong><\/h2>\n<p>M\u1ed9t s\u1ef1 hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng v\u1ec1 c\u00e1c khuy\u1ebft t\u1eadt v\u1eabn c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u hi\u1ec7u qu\u1ea3. Nh\u1eefng khuy\u1ebft t\u1eadt ch\u00ednh trong \u0111\u00fac r\u1ed7ng l\u1edbn \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1edfi \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t bao g\u1ed3m nh\u1eefng \u0111i\u1ec1u sau:<\/p>\n<h3 id=\"mold-collapse\"><strong>Khu\u00f4n s\u1ee5p \u0111\u1ed5<\/strong><\/h3>\n<p>L\u1ed7i n\u00e0y li\u00ean quan \u0111\u1ebfn s\u1ef1 ph\u00e1 v\u1ee1 m\u1ed9t ph\u1ea7n ho\u1eb7c ho\u00e0n to\u00e0n c\u1ee7a khoang khu\u00f4n. N\u00f3 d\u1eabn \u0111\u1ebfn m\u1ed9t \u0111\u00fac v\u1edbi h\u00ecnh d\u1ea1ng sai. Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 n\u1eb1m trong s\u1ef1 kh\u00e1c bi\u1ec7t \u00e1p su\u1ea5t m\u1ea1nh m\u1ebd. S\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y \u0111\u1ea9y c\u00e1t b\u00ean trong y\u1ebfu h\u01a1n ra ngo\u00e0i. S\u01a1 t\u00e1n kh\u00ed kh\u00f4ng \u0111\u1ee7 c\u0169ng t\u1ea1o ra \u00e1p l\u1ef1c ng\u01b0\u1ee3c. \u00c1p su\u1ea5t ng\u01b0\u1ee3c l\u00e0m ch\u1ea3y c\u00e1t. Y\u1ebfu t\u1ed1 ch\u00ednh l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t qu\u00e1 m\u1ee9c gi\u1eefa ch\u00e2n kh\u00f4ng b\u00ean ngo\u00e0i v\u00e0 b\u00ean trong. \u00c1p su\u1ea5t kh\u00ed sau \u0111\u00f3 v\u01b0\u1ee3t qu\u00e1 s\u1ef1 g\u1eafn k\u1ebft c\u00e1t.<\/p>\n<h3 id=\"mold-wall-movement-or-swelling\"><strong>Phong tr\u00e0o t\u01b0\u1eddng khu\u00f4n ho\u1eb7c s\u01b0ng<\/strong><\/h3>\n<p>V\u1ea5n \u0111\u1ec1 n\u00e0y g\u00e2y ra s\u1ef1 kh\u00f4ng ch\u00ednh x\u00e1c chi\u1ec1u, c\u00e1c ph\u1ea7n d\u00e0y h\u01a1n ho\u1eb7c thay \u0111\u1ed5i h\u00ecnh h\u1ecdc. N\u00f3 \u0111\u1ebfn t\u1eeb \u0111\u1ed9 n\u1ed5i qu\u00e1 m\u1ee9c v\u00e0 \u00e1p su\u1ea5t kh\u00ed. Nh\u1eefng l\u1ef1c n\u00e0y di chuy\u1ec3n c\u00e1t b\u00ean trong ho\u1eb7c u\u1ed1n cong c\u00e1c b\u1ee9c t\u01b0\u1eddng khu\u00f4n. S\u1ef1 thay \u0111\u1ed5i th\u01b0\u1eddng x\u1ea3y ra do c\u00e2n n\u1eb7ng ho\u1eb7c ki\u1ec1m ch\u1ebf kh\u00f4ng \u0111\u1ee7. S\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng xu\u1ea5t hi\u1ec7n khi l\u1ef1c n\u1ed5i v\u00e0 kh\u00ed t\u0103ng l\u1edbn h\u01a1n s\u1ee9c m\u1ea1nh c\u1eaft c\u00e1t, tr\u1ecdng l\u01b0\u1ee3ng c\u00e1t v\u00e0 h\u1ea1n ch\u1ebf b\u00ean ngo\u00e0i.<\/p>\n<h3 id=\"misrun-or-cold-shut\"><strong>L\u1ed7i ch\u1ea1y ho\u1eb7c \u0111\u00f3ng l\u1ea1nh<\/strong><\/h3>\n<p>L\u1ed7i n\u00e0y c\u00f3 ngh\u0129a l\u00e0 l\u1ea5p \u0111\u1ea7y kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7. N\u00f3 \u0111\u1ec3 l\u1ea1i c\u00e1c ph\u1ea7n kh\u00f4ng h\u00f2a tan, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf c\u00e1c khu v\u1ef1c m\u1ecfng ho\u1eb7c xa x\u00f4i. Nguy\u00ean nh\u00e2n bao g\u1ed3m m\u1ea5t nhi\u1ec7t trong qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y n\u1ed9i nhi\u1ec7t c\u1ee7a b\u1ecdt. C\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c l\u00e0 nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c t\u1ed1c \u0111\u1ed9 \u0111\u1ed5 kh\u00f4ng \u0111\u1ee7 v\u00e0 \u00e1p l\u1ef1c ph\u1ea3n kh\u00ed l\u00e0m ch\u1eadm m\u1eb7t tr\u01b0\u1edbc kim lo\u1ea1i. L\u1ed7i x\u1ea3y ra khi \u0111\u1ea7u v\u00e0o nhi\u1ec7t kim lo\u1ea1i kh\u00f4ng th\u1ec3 v\u01b0\u1ee3t qua b\u1ecdt h\u01a1i v\u00e0 t\u1ed5n th\u1ea5t li\u00ean quan.<\/p>\n<h3 id=\"carbon-defects\"><strong>L\u1ed7i carbon<\/strong><\/h3>\n<p>Ch\u00fang xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng phim carbon b\u00f3ng ho\u1eb7c t\u00fai tr\u00ean b\u1ec1 m\u1eb7t. Ch\u00fang l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a vi\u1ec7c lo\u1ea1i b\u1ecf kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c kh\u00ed nhi\u1ec7t ph\u00e2n. C\u00e1c kh\u00ed n\u1ee9t th\u00e0nh c\u00e1c ch\u1ea5t th\u1ea3i carbon l\u1eafng xu\u1ed1ng tr\u00ean m\u1eb7t kim lo\u1ea1i. C\u00e1c v\u1ea5n \u0111\u1ec1 tr\u1edf n\u00ean t\u1ed3i t\u1ec7 h\u01a1n v\u1edbi \u0111\u1ed9 th\u1ea5m th\u1ea5p trong c\u00e1c ph\u1ea7n r\u1ed7ng, ch\u00e2n kh\u00f4ng kh\u00f4ng \u0111\u1ee7, \u00e1p su\u1ea5t kh\u00ed cao v\u00e0 \u0111\u1ed9 th\u1ea5m c\u00e1t th\u1ea5p h\u01a1n.<\/p>\n<h2 id=\"engineered-solutions-for-robust-production\"><strong>Gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt cho s\u1ea3n xu\u1ea5t m\u1ea1nh m\u1ebd<\/strong><\/h2>\n<p>Gi\u1ea3i ph\u00e1p cho nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c c\u00f3 nhi\u1ec1u ph\u1ea7n. Chi\u1ebfn l\u01b0\u1ee3c t\u1eadp trung v\u00e0o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a m\u00f4 h\u00ecnh, c\u1ed5ng, qu\u1ea3n l\u00fd ch\u00e2n kh\u00f4ng v\u00e0 \u1ed5n \u0111\u1ecbnh c\u01a1 h\u1ecdc.<\/p>\n<h3 id=\"pattern-construction-and-reinforcement\"><strong>X\u00e2y d\u1ef1ng v\u00e0 t\u0103ng c\u01b0\u1eddng m\u00f4 h\u00ecnh<\/strong><\/h3>\n<p>C\u00e1c m\u1eabu r\u1ed7ng t\u01b0\u1eddng m\u1ecfng l\u1edbn \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb c\u00e1c t\u1ea5m b\u1ecdt kh\u00f4ng c\u00f3 \u0111\u1ee7 \u0111\u1ed9 c\u1ee9ng. Ch\u00fang d\u1ec5 bi\u1ebfn d\u1ea1ng d\u01b0\u1edbi tr\u1ecdng l\u01b0\u1ee3ng, l\u1edbp ph\u1ee7 ho\u1eb7c rung c\u00e1t. M\u1ed9t b\u1ed9 x\u01b0\u01a1ng b\u00ean trong t\u00edch h\u1ee3p th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng kim lo\u1ea1i nh\u1eb9 ho\u1eb7c nh\u1ef1a t\u0103ng c\u01b0\u1eddng tr\u1edf n\u00ean c\u1ea7n thi\u1ebft. N\u00f3 gi\u1eef s\u1ef1 \u1ed5n \u0111\u1ecbnh chi\u1ec1u t\u1eeb l\u1eafp r\u00e1p th\u00f4ng qua \u0111\u1ed5. X\u01b0\u01a1ng ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ef1c n\u00e9n. N\u00f3 gi\u1eef kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a ri\u00eang n\u00f3 th\u1ea5p \u0111\u1ec3 tr\u00e1nh kh\u1ed1i l\u01b0\u1ee3ng b\u00ean trong th\u00eam. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t \u1ed1ng ch\u00e2n kh\u00f4ng khi th\u1ea5m. X\u01b0\u01a1ng n\u00e0y \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t th\u00e0nh c\u00f4ng c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n nh\u01b0 v\u1eady.<\/p>\n<p><strong><img decoding=\"async\" class=\"aligncenter size-full wp-image-4945\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/lost-foam-casting-equipment-manufacturer.webp\" alt=\"nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t\" width=\"800\" height=\"500\" srcset=\"https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/lost-foam-casting-equipment-manufacturer.webp 800w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/lost-foam-casting-equipment-manufacturer-300x188.webp 300w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/lost-foam-casting-equipment-manufacturer-768x480.webp 768w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/lost-foam-casting-equipment-manufacturer-18x12.webp 18w, https:\/\/www.oc-epc.com\/wp-content\/uploads\/2026\/04\/lost-foam-casting-equipment-manufacturer-600x375.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng Gating chi\u1ebfn l\u01b0\u1ee3c<\/strong><\/p>\n<p>H\u1ec7 th\u1ed1ng c\u1eeda ph\u1ea3i cho ph\u00e9p l\u1ea5p \u0111\u1ea7y nhanh ch\u00f3ng. N\u00f3 c\u1ea7n ph\u1ea3i h\u1ea1n ch\u1ebf s\u1ed1c nhi\u1ec7t v\u00e0 ki\u1ec3m so\u00e1t bi\u1ebfn \u0111\u1ed9ng. \u0110\u1ed1i v\u1edbi \u0111\u00fac r\u1ed7ng cao, \u0111\u1ecbnh h\u01b0\u1edbng d\u1ecdc l\u00e0m t\u0103ng \u00e1p su\u1ea5t v\u00e0 c\u1ea3i thi\u1ec7n vi\u1ec7c cho \u0103n. M\u1ed9t h\u1ec7 th\u1ed1ng c\u1eeda t\u01b0\u1eddng b\u00ean ngo\u00e0i b\u01b0\u1edbc ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n so v\u1edbi nh\u1eefng ng\u01b0\u1eddi kh\u00e1c. N\u00f3 b\u1ea3o v\u1ec7 t\u00ednh to\u00e0n v\u1eb9n ch\u00e2n kh\u00f4ng ph\u1ea7n r\u1ed7ng. N\u00f3 h\u1ed7 tr\u1ee3 bottom-up progressive filling. \u0110i\u1ec1n n\u00e0y th\u00fac \u0111\u1ea9y s\u1ef1 c\u1ee9ng \u0111\u1ecbnh h\u01b0\u1edbng v\u00e0 l\u00e0m gi\u1ea3m \u0111\u1ed9 x\u1ed1p. N\u00f3 c\u0169ng t\u1ea1o th\u00e0nh m\u1ed9t m\u1eb7t tr\u1eadn t\u0103ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t. Thi\u1ebft k\u1ebf c\u1ed5ng b\u1ecb ng\u01b0ng \u0111\u1ea3m b\u1ea3o l\u1ea5p \u0111\u1ea7y nhanh ch\u00f3ng v\u1edbi \u00edt b\u1eaby kh\u00f4ng kh\u00ed. T\u1ed1c \u0111\u1ed9 l\u00e0m \u0111\u1ea7y t\u00ednh \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng ph\u00e2n h\u1ee7y b\u1ecdt th\u00f4ng qua c\u00e1c nguy\u00ean t\u1eafc n\u0103ng \u0111\u1ed9ng ch\u1ea5t l\u1ecfng.<\/p>\n<h3 id=\"advanced-vacuum-management-and-pressure-control\"><strong>Qu\u1ea3n l\u00fd ch\u00e2n kh\u00f4ng ti\u00ean ti\u1ebfn v\u00e0 ki\u1ec3m so\u00e1t \u00e1p su\u1ea5t<\/strong><\/h3>\n<p>Ch\u00e2n kh\u00f4ng t\u01b0\u1eddng b\u00ecnh ti\u00eau chu\u1ea9n kh\u00f4ng \u0111\u1ee7 cho kh\u1ed1i l\u01b0\u1ee3ng b\u00ean trong l\u1edbn. C\u00e1c \u1ed1ng ch\u00e2n kh\u00f4ng n\u1ed9i b\u1ed9 ho\u1ea1t \u0111\u1ed9ng tr\u1edf n\u00ean c\u1ea7n thi\u1ebft. C\u00e1c \u1ed1ng n\u00e0y bao g\u1ed3m \u1ed1ng \u0111\u1ee5c l\u1ed7 v\u1edbi l\u1ed7 khoan v\u00e0 b\u1ecdc l\u01b0\u1edbi. Ng\u01b0\u1eddi lao \u0111\u1ed9ng \u0111\u1eb7t ch\u00fang v\u00e0o khoang tr\u01b0\u1edbc khi l\u1ea5p \u0111\u1ea7y c\u00e1t. C\u00e1c \u1ed1ng d\u1eabn k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng. Ch\u00fang lo\u1ea1i b\u1ecf kh\u00ed c\u1ed1t l\u00f5i m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Ch\u00fang l\u00e0m t\u0103ng ch\u00e2n kh\u00f4ng b\u00ean trong, gi\u1ea3m ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t v\u00e0 c\u1ee7ng c\u1ed1 c\u00e1t. \u0110\u1ed1i v\u1edbi s\u1eaft \u0111\u00fac, ch\u00e2n kh\u00f4ng \u0111i\u1ec3n h\u00ecnh dao \u0111\u1ed9ng t\u1eeb \u00e2m 0,04 \u0111\u1ebfn 0,06 megapascals. Th\u1eddi gian gi\u1eef 15-25 ph\u00fat \u00e1p d\u1ee5ng cho \u0111\u00fac nhi\u1ec1u t\u1ea5n \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u1ee9ng.<\/p>\n<p>Tr\u1ecdng l\u01b0\u1ee3ng h\u00e0ng \u0111\u1ea7u v\u1edbi c\u00e1c t\u1ea5m n\u1eb7ng ch\u1ed1ng l\u1ea1i \u0111\u1ed9 n\u1ed5i v\u00e0 \u00e1p su\u1ea5t kh\u00ed. C\u00f4ng nh\u00e2n t\u00ednh to\u00e1n tr\u1ecdng l\u01b0\u1ee3ng d\u1ef1a tr\u00ean di\u1ec7n t\u00edch tr\u00ean d\u1ef1 ki\u1ebfn, chi\u1ec1u cao kim lo\u1ea1i v\u00e0 y\u1ebfu t\u1ed1 an to\u00e0n 1,5-2,0 cho \u0111i\u1ec1u ki\u1ec7n \u0111\u1ed9ng.<\/p>\n<h3 id=\"optimized-process-parameters\"><strong>C\u00e1c th\u00f4ng s\u1ed1 quy tr\u00ecnh t\u1ed1i \u01b0u h\u00f3a<\/strong><\/h3>\n<p>H\u01b0\u1edbng d\u1eabn ch\u00ednh cho \u0111\u00fac r\u1ed7ng s\u1eaft l\u1edbn bao g\u1ed3m c\u00e1c \u0111i\u1ec3m sau.<\/p>\n<ul>\n<li>Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed5: 1420-1480 \u00b0 C \u0111\u1ec3 b\u00f9 \u0111\u1eafp nhi\u1ec7t ph\u00e2n h\u1ee7y b\u1ecdt.<\/li>\n<li>T\u1ed1c \u0111\u1ed9 \u0111\u1ed5: Nhanh ch\u00f3ng v\u00e0 \u1ed5n \u0111\u1ecbnh (v\u00ed d\u1ee5: 2-3 ph\u00fat cho 3-4 t\u1ea5n) \u0111\u1ec3 duy tr\u00ec s\u1ef1 ti\u1ebfn b\u1ed9 ph\u00eda tr\u01b0\u1edbc kim lo\u1ea1i nh\u1ea5t qu\u00e1n.<\/li>\n<li>M\u1ee9c ch\u00e2n kh\u00f4ng: \u00e2m 0,05 MPa \u00b1 0,01 MPa \u0111\u1ec3 n\u00e9n, lo\u1ea1i b\u1ecf kh\u00ed v\u00e0 t\u00ednh thanh l\u1ecfng.<\/li>\n<li>Th\u1eddi gian gi\u1eef ch\u00e2n kh\u00f4ng: Th\u1eddi gian l\u00e0m r\u1eafn c\u1ed9ng v\u1edbi 5-10 ph\u00fat.<\/li>\n<li>C\u00e1t: AFS 40-55 tr\u00f2n silica ho\u1eb7c zircon cho kh\u1ea3 n\u0103ng ch\u1ea3y v\u00e0 \u0111\u1ed9 th\u1ea5m.<\/li>\n<\/ul>\n<h2 id=\"synthesis-and-recommended-process-flow\"><strong>T\u1ed5ng h\u1ee3p v\u00e0 lu\u1ed3ng quy tr\u00ecnh \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/strong><\/h2>\n<p>M\u1ed9t quy tr\u00ecnh th\u00e0nh c\u00f4ng theo c\u00e1c b\u01b0\u1edbc n\u00e0y. \u0110\u1ea7u ti\u00ean, ch\u1ebf t\u1ea1o c\u00e1c m\u1eabu b\u1ecdt t\u0103ng c\u01b0\u1eddng v\u1edbi l\u1edbp ph\u1ee7 th\u1ea5m. Ti\u1ebfp theo, l\u1eafp r\u00e1p ch\u00fang trong b\u00ecnh v\u1edbi c\u00e1c \u1ed1ng d\u1eabn b\u00ean trong v\u00e0 c\u1eeda b\u00ean ngo\u00e0i. Sau \u0111\u00f3 l\u1ea5p \u0111\u1ea7y v\u00e0 nh\u1ecf g\u1ecdn c\u00e1t m\u1ed9t c\u00e1ch \u0111\u1ed3ng nh\u1ea5t. Ni\u00eam phong thi\u1ebft l\u1eadp, th\u00eam tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 k\u1ebft n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng ch\u00e2n kh\u00f4ng. \u0110\u1ed5 d\u01b0\u1edbi ch\u00e2n kh\u00f4ng m\u1ee5c ti\u00eau \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 t\u1ed1c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh. Gi\u1eef ch\u00e2n kh\u00f4ng cho \u0111\u1ebfn khi s\u1ef1 c\u1ee9ng r\u1eafn ho\u00e0n th\u00e0nh. Cu\u1ed1i c\u00f9ng, \u0111\u1ec3 l\u00e0m m\u00e1t trong c\u00e1t.<\/p>\n<h2 id=\"conclusion\"><strong>Ph\u1ea7n k\u1ebft lu\u1eadn<\/strong><\/h2>\n<p>\u0110\u00fac b\u1ecdt b\u1ecb m\u1ea5t thay \u0111\u1ed5i s\u1ea3n xu\u1ea5t c\u00e1c b\u1ed9 ph\u1eadn r\u1ed7ng ph\u1ee9c t\u1ea1p th\u00e0nh m\u1ed9t quy tr\u00ecnh t\u00edch h\u1ee3p. Th\u00e0nh c\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ki\u1ec3m so\u00e1t ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t b\u00ean trong v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a c\u00e1t. \u0110i\u1ec1u khi\u1ec3n n\u00e0y \u0111\u1ebfn th\u00f4ng qua h\u1ed7 tr\u1ee3 m\u00f4 h\u00ecnh, c\u1ed5ng b\u00ean ngo\u00e0i, ch\u00e2n kh\u00f4ng b\u00ean trong v\u00e0 c\u00e2n n\u1eb7ng. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0m gi\u1ea3m s\u1ef1 s\u1ee5p \u0111\u1ed5, s\u01b0ng v\u00e0 ch\u1ea1y sai m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<p>L\u00e0 m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t chuy\u00ean nghi\u1ec7p, nh\u00e0 cung c\u1ea5p v\u00e0 nh\u00e0 m\u00e1y chuy\u00ean v\u1ec1 thi\u1ebft b\u1ecb \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t, <a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/\"><strong>C\u00f4ng ngh\u1ec7 OC<\/strong><\/a> cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p th\u00f4ng minh ti\u00ean ti\u1ebfn. C\u00e1c gi\u1ea3i ph\u00e1p n\u00e0y h\u1ed7 tr\u1ee3 nhu c\u1ea7u ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c quy tr\u00ecnh b\u1ecdt b\u1ecb m\u1ea5t ph\u1ee9c t\u1ea1p cho \u0111\u00fac r\u1ed7ng l\u1edbn. C\u00f4ng ty t\u1eadp trung v\u00e0o c\u00e1c d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t hi\u1ec7u qu\u1ea3 cao, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 h\u1ec7 th\u1ed1ng t\u00edch h\u1ee3p. C\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y c\u1ea3i thi\u1ec7n s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a qu\u00e1 tr\u00ecnh v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00fac. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 nh\u00e0 m\u00e1y \u0111\u00fac t\u00ecm ki\u1ebfm thi\u1ebft b\u1ecb \u0111\u00fac b\u1ecdt m\u1ea5t \u0111\u00e1ng tin c\u1eady c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb c\u00e1c gi\u1ea3i ph\u00e1p turnkey c\u1ee7a OC Technology. C\u00e1c gi\u1ea3i ph\u00e1p bao g\u1ed3m c\u00e1c h\u1ec7 th\u1ed1ng chu\u1ea9n b\u1ecb m\u1eabu, l\u1edbp ph\u1ee7, s\u1ea5y v\u00e0 qu\u1ea3n l\u00fd ch\u00e2n kh\u00f4ng. C\u00e1c d\u1ecbch v\u1ee5 thi\u1ebft b\u1ecb ch\u00ednh bao g\u1ed3m h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng trung t\u00e2m v\u00e0 m\u00e1y tr\u1ed9n s\u01a1n lo\u1ea1i thang m\u00e1y. Nh\u1eefng m\u1eb7t h\u00e0ng n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a c\u00e1c ho\u1ea1t \u0111\u1ed9ng b\u1ecdt b\u1ecb m\u1ea5t. <a style=\"text-decoration: underline;\" href=\"https:\/\/www.oc-epc.com\/vi\/lien-he\/\"><strong>Li\u00ean h\u1ec7 v\u1edbi OC Technology<\/strong><\/a> \u0111\u1ec3 kh\u00e1m ph\u00e1 thi\u1ebft b\u1ecb t\u00f9y ch\u1ec9nh. Thi\u1ebft b\u1ecb n\u00e0y \u0111\u00e1p \u1ee9ng nhu c\u1ea7u s\u1ea3n xu\u1ea5t \u0111\u00f2i h\u1ecfi v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t \u0111\u00fac t\u1ed5ng th\u1ec3.<\/p>\n<h2 id=\"faq\"><strong>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/strong><\/h2>\n<h3 id=\"what-is-the-main-challenge-in-lost-foam-casting-for-large-hollow-castings\"><strong>Th\u00e1ch th\u1ee9c ch\u00ednh trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t cho \u0111\u00fac r\u1ed7ng l\u1edbn l\u00e0 g\u00ec? <\/strong><\/h3>\n<p>Th\u00e1ch th\u1ee9c ch\u00ednh l\u00e0 qu\u1ea3n l\u00fd s\u1ef1 kh\u00e1c bi\u1ec7t \u00e1p su\u1ea5t gi\u1eefa c\u00e1t b\u00ean ngo\u00e0i v\u00e0 b\u00ean trong. S\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y ph\u00e1t sinh t\u1eeb kh\u00f4ng \u0111\u1ee7 ch\u00e2n kh\u00f4ng trong khoang r\u1ed7ng. N\u00f3 l\u00e0m t\u0103ng nguy c\u01a1 n\u1ea5m m\u1ed1c s\u1ee5p \u0111\u1ed5, s\u01b0ng v\u00e0 c\u00e1c khuy\u1ebft t\u1eadt li\u00ean quan \u0111\u1ebfn kh\u00ed.<\/p>\n<h3 id=\"how-does-internal-vacuum-management-improve-lost-foam-casting-of-hollow-structures\"><strong>Qu\u1ea3n l\u00fd ch\u00e2n kh\u00f4ng n\u1ed9i b\u1ed9 c\u1ea3i thi\u1ec7n vi\u1ec7c \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t c\u1ee7a c\u00e1c c\u1ea5u tr\u00fac r\u1ed7ng nh\u01b0 th\u1ebf n\u00e0o? <\/strong><\/h3>\n<p>C\u00e1c \u1ed1ng ch\u00e2n kh\u00f4ng b\u00ean trong cung c\u1ea5p s\u1ef1 s\u01a1 t\u00e1n tr\u1ef1c ti\u1ebfp c\u1ee7a kh\u00ed nhi\u1ec7t ph\u00e2n t\u1eeb khu v\u1ef1c c\u1ed1t l\u00f5i. Ch\u00fang l\u00e0m t\u0103ng \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng n\u1ed9i b\u1ed9. N\u00f3 c\u1ee7ng c\u1ed1 c\u00e1t. Ch\u00fang c\u0169ng l\u00e0m gi\u1ea3m s\u1ef1 kh\u00e1c bi\u1ec7t \u00e1p su\u1ea5t ph\u00e1 h\u1ee7y g\u00e2y ra s\u1ef1 b\u1ea5t \u1ed5n.<\/p>\n<h3 id=\"what-gating-approach-works-best-for-tall-hollow-castings-in-lost-foam-casting\"><strong>C\u00e1ch ti\u1ebfp c\u1eadn c\u1eeda n\u00e0o ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t cho \u0111\u00fac r\u1ed7ng cao trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t?<\/strong><\/h3>\n<p>C\u1ed5ng b\u00ean b\u01b0\u1edbc ho\u1eb7c b\u01b0\u1edbc b\u00ean ngo\u00e0i b\u1ea3o t\u1ed3n t\u00ednh to\u00e0n v\u1eb9n ch\u00e2n kh\u00f4ng b\u00ean trong. N\u00f3 th\u00fac \u0111\u1ea9y ki\u1ec3m so\u00e1t bottom-up filling. N\u00f3 h\u1ed7 tr\u1ee3 s\u1ef1 c\u1ee9ng r\u1eafn d\u1ea7n d\u1ea7n. N\u00f3 c\u0169ng gi\u1ea3m thi\u1ec3u s\u1ef1 bi\u1ebfn \u0111\u1ed9ng.<\/p>\n<h3 id=\"why-is-pattern-reinforcement-required-for-large-hollow-foam-patterns\"><strong>T\u1ea1i sao t\u0103ng c\u01b0\u1eddng m\u1eabu l\u00e0 c\u1ea7n thi\u1ebft cho c\u00e1c m\u1eabu b\u1ecdt r\u1ed7ng l\u1edbn? <\/strong><\/h3>\n<p>C\u00e1c m\u1eabu t\u01b0\u1eddng m\u1ecfng l\u1edbn kh\u00f4ng c\u00f3 \u0111\u1ee7 \u0111\u1ed9 c\u1ee9ng. Ch\u00fang c\u00f3 th\u1ec3 bi\u1ebfn d\u1ea1ng trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd, l\u1edbp ph\u1ee7 v\u00e0 n\u00e9n c\u00e1t. M\u1ed9t b\u1ed9 x\u01b0\u01a1ng b\u00ean trong \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh chi\u1ec1u trong to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh.<\/p>\n<h3 id=\"what-typical-vacuum-levels-are-applied-in-lost-foam-casting-for-iron-hollow-parts\"><strong>M\u1ee9c ch\u00e2n kh\u00f4ng \u0111i\u1ec3n h\u00ecnh n\u00e0o \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t cho c\u00e1c b\u1ed9 ph\u1eadn r\u1ed7ng s\u1eaft? <\/strong><\/h3>\n<p>M\u1ee9c ch\u00e2n kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng th\u01b0\u1eddng dao \u0111\u1ed9ng t\u1eeb \u00e2m 0,04 \u0111\u1ebfn 0,06 megapascals. Ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c v\u1eabn c\u1ea7n thi\u1ebft cho vi\u1ec7c n\u00e9n c\u00e1t hi\u1ec7u qu\u1ea3 v\u00e0 lo\u1ea1i b\u1ecf kh\u00ed trong c\u00e1c ph\u1ea7n r\u1ed7ng.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction to Lost Foam Casting for Complex Components The lost foam casting process stands as a major step forward in foundry technology. This method works especially well for complex and large-scale components. The basic idea involves a sacrificial foam pattern that molten metal replaces. This approach gives great design freedom. It removes the need for [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4943,"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-4939","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\/4939","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=4939"}],"version-history":[{"count":3,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4939\/revisions"}],"predecessor-version":[{"id":4948,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4939\/revisions\/4948"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media\/4943"}],"wp:attachment":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media?parent=4939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/categories?post=4939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/tags?post=4939"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}