{"id":4972,"date":"2026-04-24T00:00:49","date_gmt":"2026-04-23T16:00:49","guid":{"rendered":"https:\/\/www.oc-epc.com\/?p=4972"},"modified":"2026-04-22T14:32:53","modified_gmt":"2026-04-22T06:32:53","slug":"toi-uu-hoa-phuong-phap-duc-khuon-xop-cho-vo-hop-so-thanh-mong","status":"publish","type":"post","link":"https:\/\/www.oc-epc.com\/vi\/news-blog\/industry-news\/optimization-of-lost-foam-casting-for-thin-wall-gearbox-housings\/","title":{"rendered":"T\u1ed1i \u01b0u h\u00f3a ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac khu\u00f4n x\u1ed1p cho v\u1ecf h\u1ed9p s\u1ed1 th\u00e0nh m\u1ecfng"},"content":{"rendered":"

M\u1ea5t b\u1ecdt \u0111\u00fac<\/strong><\/a>Ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac khu\u00f4n bay h\u01a1i, hay c\u00f2n g\u1ecdi l\u00e0 \u0111\u00fac khu\u00f4n bay h\u01a1i ho\u1eb7c quy tr\u00ecnh EPC, l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 t\u1ea1o h\u00ecnh g\u1ea7n ch\u00ednh x\u00e1c ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong s\u1ea3n xu\u1ea5t \u0111\u00fac hi\u1ec7n \u0111\u1ea1i. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y mang l\u1ea1i \u0111\u1ed9 ch\u00ednh x\u00e1c k\u00edch th\u01b0\u1edbc tuy\u1ec7t v\u1eddi, b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n t\u1ed1t v\u00e0 t\u00e1c \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng th\u1ea5p so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac c\u00e1t truy\u1ec1n th\u1ed1ng. Trong quy tr\u00ecnh n\u00e0y, m\u1ed9t khu\u00f4n m\u1eabu b\u1eb1ng x\u1ed1p polystyrene \u0111\u01b0\u1ee3c ph\u1ee7 v\u1eadt li\u1ec7u ch\u1ecbu nhi\u1ec7t n\u1eb1m trong l\u1edbp c\u00e1t kh\u00f4, kh\u00f4ng k\u1ebft d\u00ednh b\u00ean trong m\u1ed9t khu\u00f4n \u0111\u00fac. \u00c1p su\u1ea5t \u00e2m \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong qu\u00e1 tr\u00ecnh r\u00f3t v\u00e0 \u0111\u00f4ng \u0111\u1eb7c gi\u00fap gi\u1eef cho khu\u00f4n \u1ed5n \u0111\u1ecbnh. \u0110\u1ed3ng th\u1eddi, n\u00f3 cho ph\u00e9p kh\u00ed t\u1eeb s\u1ef1 ph\u00e2n h\u1ee7y c\u1ee7a x\u1ed1p tho\u00e1t ra d\u1ec5 d\u00e0ng. Kim lo\u1ea1i n\u00f3ng ch\u1ea3y l\u00e0m bay h\u01a1i khu\u00f4n m\u1eabu b\u1eb1ng x\u1ed1p v\u00e0 l\u1ea5p \u0111\u1ea7y kh\u00f4ng gian tr\u1ed1ng. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra c\u00e1c chi ti\u1ebft kim lo\u1ea1i ph\u1ee9c t\u1ea1p v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/p>\n

V\u1ecf h\u1ed9p s\u1ed1 cho \u00f4 t\u00f4, m\u00e1y m\u00f3c n\u00f4ng nghi\u1ec7p v\u00e0 xe c\u01a1 gi\u1edbi c\u1ea7n s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t, c\u1ea5u tr\u00fac b\u00ean trong ph\u1ee9c t\u1ea1p v\u00e0 thi\u1ebft k\u1ebf tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9. C\u00e1c b\u1ed9 ph\u1eadn n\u00e0y th\u01b0\u1eddng c\u00f3 th\u00e0nh m\u1ecfng t\u1eeb 5 \u0111\u1ebfn 7 mm. Ch\u00fang c\u0169ng y\u00eau c\u1ea7u c\u1ea5u tr\u00fac b\u00ean trong \u0111\u1eb7c ch\u1eafc, c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua c\u00e1c th\u1eed nghi\u1ec7m r\u00f2 r\u1ec9 \u00e1p su\u1ea5t th\u1ee7y l\u1ef1c \u1edf m\u1ee9c 3 kg m\u00e0 kh\u00f4ng c\u00f3 c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 t\u1ea1p ch\u1ea5t x\u1ec9, \u0111\u1ed9 r\u1ed7 ho\u1eb7c m\u1ed1i h\u00e0n ngu\u1ed9i. Ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac c\u00e1t truy\u1ec1n th\u1ed1ng th\u01b0\u1eddng t\u1ea1o ra \u0111\u1ed9 d\u00e0y th\u00e0nh kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, qu\u00e1 nhi\u1ec1u bavia v\u00e0 c\u00e1c t\u1ea1p ch\u1ea5t li\u00ean quan \u0111\u1ebfn c\u00e1t. V\u00ec l\u00fd do n\u00e0y, ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac khu\u00f4n x\u1ed1p tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean \u0111\u1ec3 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh v\u00e0 \u00edt c\u00f4ng \u0111o\u1ea1n x\u1eed l\u00fd sau \u0111\u00fac h\u01a1n.<\/p>\n

\"\u0110\u00fac<\/p>\n

\u0110i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t v\u1ecf h\u1ed9p s\u1ed1 th\u00e0nh m\u1ecfng<\/strong><\/h2>\n

C\u00e1c thi\u1ebft l\u1eadp s\u1ea3n xu\u1ea5t \u0111i\u1ec3n h\u00ecnh cho ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac khu\u00f4n x\u1ed1p m\u1ea5t m\u1eabu \u0111\u1ec3 ch\u1ebf t\u1ea1o v\u1ecf h\u1ed9p s\u1ed1 s\u1eed d\u1ee5ng c\u00e1t th\u00f4 c\u00f3 k\u00edch th\u01b0\u1edbc m\u1eaft l\u01b0\u1edbi s\u01a1 c\u1ea5p t\u1eeb 20\u201340, h\u00e0m l\u01b0\u1ee3ng b\u00f9n d\u01b0\u1edbi 0,3% v\u00e0 l\u1edbp ph\u1ee7 ch\u1ecbu nhi\u1ec7t d\u00e0y 1,0\u20131,5 mm v\u1edbi \u0111\u1ed9 \u1ea9m d\u01b0\u1edbi 1%. C\u00e1c khu\u00f4n l\u1edbn c\u00f3 k\u00edch th\u01b0\u1edbc kho\u1ea3ng 2050 mm \u00d7 1500 mm \u00d7 1300 mm, \u0111\u01b0\u1ee3c trang b\u1ecb h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3 n\u0103m m\u1eb7t v\u00e0 h\u1ec7 th\u1ed1ng h\u00fat ch\u00e2n kh\u00f4ng \u0111\u00e1y, h\u1ed7 tr\u1ee3 \u0111\u00fac theo c\u1ee5m \u0111\u1ec3 t\u0103ng n\u0103ng su\u1ea5t. M\u00e1y r\u00f3t t\u1ef1 \u0111\u1ed9ng ki\u1ec3u \u1ea5m tr\u00e0 c\u00f3 th\u1ec3 x\u1eed l\u00fd tr\u1ecdng l\u01b0\u1ee3ng m\u1ebb l\u00ean \u0111\u1ebfn 2100 kg. Nh\u1eefng t\u00ednh n\u0103ng n\u00e0y cho ph\u00e9p s\u1ea3n xu\u1ea5t hi\u1ec7u qu\u1ea3 v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn.<\/p>\n

C\u00e1c bi\u1ebfn th\u1ec3 ph\u1ed5 bi\u1ebfn c\u1ee7a v\u1ecf h\u1ed9p s\u1ed1 bao g\u1ed3m c\u00e1c m\u1eabu c\u00f3 k\u00edch th\u01b0\u1edbc kho\u1ea3ng 780 \u00d7 450 \u00d7 440 mm (\u0111\u1ed9 d\u00e0y th\u00e0nh 5\u20136 mm, tr\u1ecdng l\u01b0\u1ee3ng 100 kg), 680 \u00d7 320 \u00d7 245 mm (\u0111\u1ed9 d\u00e0y th\u00e0nh 6\u20137 mm, tr\u1ecdng l\u01b0\u1ee3ng 100 kg) v\u00e0 440 \u00d7 420 \u00d7 380 mm (\u0111\u1ed9 d\u00e0y th\u00e0nh 5\u20136 mm, tr\u1ecdng l\u01b0\u1ee3ng 68 kg). T\u1ea5t c\u1ea3 \u0111\u1ec1u s\u1eed d\u1ee5ng gang x\u00e1m HT300. C\u00e1c c\u1ea5u tr\u00fac th\u00e0nh m\u1ecfng n\u00e0y t\u1ea1o ra nh\u1eefng th\u00e1ch th\u1ee9c \u0111\u1eb7c bi\u1ec7t do t\u1ed1c \u0111\u1ed9 l\u00e0m ngu\u1ed9i nhanh, h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p v\u00e0 nhu c\u1ea7u v\u1ec1 d\u00f2ng ch\u1ea3y kim lo\u1ea1i \u0111\u1ed3ng \u0111\u1ec1u trong qu\u00e1 tr\u00ecnh \u0111\u1ed5 \u0111\u1ea7y.<\/p>\n

C\u1ea5u h\u00ecnh v\u1eadt li\u1ec7u v\u00e0 c\u1ee5m \u0111i\u1ec3n h\u00ecnh<\/strong><\/h2>\n

Gang x\u00e1m HT300 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m v\u1eadt li\u1ec7u ch\u00ednh. N\u00f3 cung c\u1ea5p \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng gia c\u00f4ng ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng h\u1ed9p s\u1ed1. C\u1ea5u h\u00ecnh \u0111\u00fac c\u1ee5m cho ph\u00e9p t\u1ea1o ra 6-8 chi ti\u1ebft tr\u00ean m\u1ed7i khu\u00f4n. C\u1ea5u h\u00ecnh n\u00e0y t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t \u0111\u1ed3ng th\u1eddi gi\u1eef cho \u0111\u1ed9 n\u00e9n c\u00e1t \u0111\u1ed3ng \u0111\u1ec1u xung quanh c\u00e1c hoa v\u0103n ph\u1ee9c t\u1ea1p.<\/p>\n

Ti\u00eau chu\u1ea9n v\u1ec1 l\u1edbp ph\u1ee7 v\u00e0 chu\u1ea9n b\u1ecb c\u00e1t<\/strong><\/h2>\n

L\u1edbp ph\u1ee7 ch\u1ecbu nhi\u1ec7t c\u1ea7n ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c \u0111\u1ed9 nh\u1edbt, h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t r\u1eafn v\u00e0 qu\u00e1 tr\u00ecnh s\u1ea5y kh\u00f4. Vi\u1ec7c ki\u1ec3m so\u00e1t n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng th\u1ea5m kh\u00ed v\u00e0 ch\u1ea5t l\u1ecfng. Qu\u00e1 tr\u00ecnh n\u00e9n c\u00e1t b\u1eb1ng rung \u0111\u1ed9ng ph\u1ea3i tr\u00e1nh l\u00e0m bi\u1ebfn d\u1ea1ng h\u00ecnh d\u1ea1ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf c\u00e1c ph\u1ea7n m\u1ecfng. S\u1ef1 c\u1ea9n th\u1eadn n\u00e0y gi\u00fap ng\u0103n ng\u1eeba s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a kim lo\u1ea1i ho\u1eb7c s\u1ef1 s\u1ee5p \u0111\u1ed5 trong qu\u00e1 tr\u00ecnh r\u00f3t.<\/p>\n

Nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng ban \u0111\u1ea7u trong qu\u00e1 tr\u00ecnh \u0111\u00fac khu\u00f4n x\u1ed1p<\/strong><\/h2>\n

C\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t ban \u0111\u1ea7u c\u1ee7a v\u1ecf h\u1ed9p s\u1ed1 th\u00e0nh m\u1ecfng th\u01b0\u1eddng g\u1eb7p t\u1ef7 l\u1ec7 l\u1ed7i cao trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra r\u00f2 r\u1ec9 th\u1ee7y l\u1ef1c. C\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p bao g\u1ed3m c\u00e1c \u0111i\u1ec3m r\u00f2 r\u1ec9 t\u1eadp trung, t\u1ea1p ch\u1ea5t x\u1ec9 lan r\u1ed9ng v\u00e0 c\u00e1c m\u1ed1i h\u00e0n ngu\u1ed9i l\u00e0m suy y\u1ebfu t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac. Nh\u1eefng khuy\u1ebft t\u1eadt n\u00e0y ch\u1ee7 y\u1ebfu xu\u1ea5t ph\u00e1t t\u1eeb thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng r\u00f3t k\u00e9m g\u00e2y ra d\u00f2ng ch\u1ea3y r\u1ed1i, h\u01b0\u1edbng ch\u00f4n kh\u00f4ng ph\u00f9 h\u1ee3p d\u1eabn \u0111\u1ebfn \u0111\u00f4ng \u0111\u1eb7c kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 ki\u1ec3m so\u00e1t kh\u00f4ng \u0111\u00fang c\u00e1c th\u00f4ng s\u1ed1 quy tr\u00ecnh nh\u01b0 \u00e1p su\u1ea5t \u00e2m, nhi\u1ec7t \u0111\u1ed9 r\u00f3t v\u00e0 h\u00e0m l\u01b0\u1ee3ng cacbon t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. Trong c\u00e1c c\u1ea5u h\u00ecnh c\u1ee5m b\u00ean trong c\u00e1c khu\u00f4n l\u1edbn, vi\u1ec7c n\u00e9n c\u00e1t kh\u00f4ng nh\u1ea5t qu\u00e1n v\u00e0 h\u00fat kh\u00ed kh\u00f4ng hi\u1ec7u qu\u1ea3 l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam nguy c\u01a1 s\u1ee5p \u0111\u1ed5 khu\u00f4n v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 b\u00e1m d\u00ednh c\u00e1t.<\/p>\n

C\u00e1c c\u01a1 ch\u1ebf g\u00e2y l\u1ed7i th\u01b0\u1eddng g\u1eb7p trong c\u00e1c linh ki\u1ec7n th\u00e0nh m\u1ecfng<\/strong><\/h2>\n

Th\u00e0nh m\u1ecfng l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 m\u1ea5t nhi\u1ec7t. \u0110i\u1ec1u n\u00e0y l\u00e0m t\u0103ng nguy c\u01a1 x\u1ea3y ra l\u1ed7i in, g\u1ea5p n\u1ebfp v\u00e0 r\u1ed7 kh\u00ed. S\u1ea3n ph\u1ea9m ph\u00e2n h\u1ee7y nhi\u1ec7t t\u1eeb qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y b\u1ecdt c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c khuy\u1ebft t\u1eadt carbon b\u00f3ng ho\u1eb7c nh\u0103n n\u1ebfu c\u00f4ng nh\u00e2n kh\u00f4ng th\u00f4ng gi\u00f3 ho\u1eb7c h\u1ea5p th\u1ee5 ch\u00fang \u0111\u00fang c\u00e1ch c\u00f9ng v\u1edbi l\u1edbp ph\u1ee7. T\u1ed1c \u0111\u1ed9 kim lo\u1ea1i cao gi\u1eef l\u1ea1i kh\u00ed, trong khi t\u1ed1c \u0111\u1ed9 th\u1ea5p g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng l\u1ea5p \u0111\u1ea7y kh\u00f4ng ho\u00e0n to\u00e0n.<\/p>\n

\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn th\u1eed nghi\u1ec7m \u00e1p su\u1ea5t th\u1ee7y l\u1ef1c<\/strong><\/h2>\n

C\u00e1c l\u1ed7i r\u00f2 r\u1ec9 \u1edf \u00e1p su\u1ea5t 3 kg th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n \u1edf c\u00e1c v\u00f9ng ch\u1ecbu \u00e1p l\u1ef1c ho\u1eb7c c\u00e1c ph\u1ea7n m\u1ecfng. Nh\u1eefng l\u1ed7i n\u00e0y l\u00e0 do r\u1ed7 \u200b\u200bco ng\u00f3t, t\u1ea1p ch\u1ea5t oxit ho\u1eb7c c\u00e1c m\u1ed1i h\u00e0n ngu\u1ed9i t\u1ea1i c\u00e1c \u0111i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a m\u1eb7t tr\u01b0\u1edbc kim lo\u1ea1i.<\/p>\n

Nguy\u00ean t\u1eafc thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng th\u00e0nh m\u1ecfng<\/strong><\/h2>\n

H\u1ec7 th\u1ed1ng d\u1eabn li\u1ec7u m\u1edf v\u1edbi van \u0111i\u1ec1u ti\u1ebft gi\u00fap ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 r\u00f3t li\u1ec7u. C\u00e1c c\u1eeda r\u00f3t \u0111a \u0111i\u1ec3m ph\u00e2n ph\u1ed1i kim lo\u1ea1i \u0111\u1ed3ng \u0111\u1ec1u, gi\u1ea3m thi\u1ec3u c\u00e1c \u0111i\u1ec3m n\u00f3ng c\u1ee5c b\u1ed9 v\u00e0 c\u1ea3i thi\u1ec7n qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c theo h\u01b0\u1edbng mong mu\u1ed1n. C\u00e1c k\u00eanh tho\u00e1t kh\u00ed \u1edf nh\u1eefng \u0111i\u1ec3m cao nh\u1ea5t, v\u1edbi t\u1ed5ng di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang \u00edt nh\u1ea5t 50% di\u1ec7n t\u00edch c\u1eeda r\u00f3t, gi\u00fap kh\u00ed tho\u00e1t ra ngo\u00e0i.<\/p>\n

T\u1ed1i \u01b0u h\u00f3a ph\u01b0\u01a1ng \u00e1n ch\u00f4n c\u1ea5t<\/strong><\/h2>\n

H\u01b0\u1edbng ch\u00f4n chi ti\u1ebft b\u00ean trong khu\u00f4n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 \u0111\u1ed9ng l\u1ef1c \u0111i\u1ec1n \u0111\u1ea7y v\u00e0 qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c theo h\u01b0\u1edbng nh\u1ea5t \u0111\u1ecbnh. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ban \u0111\u1ea7u \u0111\u1eb7t c\u00e1c v\u00f9ng kh\u00f4ng ch\u1ecbu \u00e1p l\u1ef1c xu\u1ed1ng d\u01b0\u1edbi th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn vi\u1ec7c \u0111i\u1ec1n \u0111\u1ea7y kh\u00f4ng ho\u00e0n to\u00e0n \u1edf c\u00e1c v\u00f9ng quan tr\u1ecdng. Ph\u01b0\u01a1ng ph\u00e1p c\u1ea3i ti\u1ebfn \u0111\u1eb7t c\u00e1c b\u1ec1 m\u1eb7t ch\u1ecbu \u00e1p l\u1ef1c xu\u1ed1ng d\u01b0\u1edbi trong khi h\u01b0\u1edbng c\u00e1c l\u1ed7 l\u1edbn l\u00ean tr\u00ean. S\u1ef1 thay \u0111\u1ed5i n\u00e0y cho ph\u00e9p d\u00f2ng ch\u1ea3y \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi tr\u1ecdng l\u1ef1c v\u00e0 h\u1ed7 tr\u1ee3 t\u1ed1t h\u01a1n cho c\u00e1c ph\u1ea7n m\u1ecfng. S\u1ef1 \u0111i\u1ec1u ch\u1ec9nh n\u00e0y c\u0169ng cho ph\u00e9p m\u1eadt \u0111\u1ed9 c\u1ee5m cao h\u01a1n\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 t\u00e1m chi ti\u1ebft m\u1ed7i khu\u00f4n \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 m\u1eabu nh\u1ea5t \u0111\u1ecbnh\u2014\u0111\u1ed3ng th\u1eddi c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n t\u1ed5ng th\u1ec3 c\u1ee7a v\u1eadt \u0111\u00fac v\u00e0 gi\u1ea3m t\u1ef7 l\u1ec7 h\u1ecfng do r\u00f2 r\u1ec9.<\/p>\n

\"Nh\u00e0<\/p>\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a h\u01b0\u1edbng \u0111\u1ecbnh v\u1ecb \u0111\u1ebfn tr\u00ecnh t\u1ef1 \u0111\u00f4ng \u0111\u1eb7c<\/strong><\/h2>\n

C\u00e1c v\u00f9ng ch\u1ecbu \u00e1p l\u1ef1c h\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c di\u1ec5n ra t\u1eeb c\u00e1c ph\u1ea7n m\u1ecfng \u0111\u1ebfn c\u00e1c ph\u1ea7n d\u00e0y. \u0110i\u1ec1u n\u00e0y gi\u00fap vi\u1ec7c c\u1ea5p li\u1ec7u d\u1ec5 d\u00e0ng h\u01a1n v\u00e0 gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng r\u1ed7 do co ng\u00f3t.<\/p>\n

C\u1ea3i thi\u1ec7n m\u1eadt \u0111\u1ed9 c\u1ee5m<\/strong><\/h2>\n

Vi\u1ec7c c\u1ea3i ti\u1ebfn ph\u01b0\u01a1ng ph\u00e1p ch\u00f4n l\u1ea5p gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 \u0111\u00f3ng g\u00f3i m\u00e0 kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u00f2ng ch\u1ea3y c\u1ee7a c\u00e1t v\u00e0o c\u00e1c h\u1ed1c ph\u1ee9c t\u1ea1p. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u0103ng n\u0103ng su\u1ea5t.<\/p>\n

T\u1ed1i \u01b0u h\u00f3a c\u00e1c th\u00f4ng s\u1ed1 \u00e1p su\u1ea5t \u00e2m<\/strong><\/h2>\n

Ki\u1ec3m so\u00e1t \u00e1p su\u1ea5t \u00e2m \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a khu\u00f4n c\u00e1t, qu\u00e1 tr\u00ecnh tho\u00e1t kh\u00ed v\u00e0 s\u1ef1 h\u00ecnh th\u00e0nh khuy\u1ebft t\u1eadt trong c\u00e1c quy tr\u00ecnh \u0111\u00fac khu\u00f4n b\u1ecdt. Th\u1eed nghi\u1ec7m c\u00f3 h\u1ec7 th\u1ed1ng tr\u00ean ph\u1ea1m vi t\u1eeb 0,040 \u0111\u1ebfn 0,052 (v\u1edbi b\u01b0\u1edbc t\u0103ng 0,001) cho th\u1ea5y gi\u00e1 tr\u1ecb t\u1ed1i \u01b0u kho\u1ea3ng 0,049 \u0111\u1ed1i v\u1edbi v\u1ecf h\u1ed9p s\u1ed1 th\u00e0nh m\u1ecfng. \u1ede m\u1ee9c n\u00e0y, t\u1ef7 l\u1ec7 r\u00f2 r\u1ec9 gi\u1ea3m \u0111\u00e1ng k\u1ec3 (xu\u1ed1ng kho\u1ea3ng 25%) c\u00f9ng v\u1edbi vi\u1ec7c gi\u1ea3m thi\u1ec3u khuy\u1ebft t\u1eadt do x\u1ec9 (kho\u1ea3ng 22%). Ch\u00e2n kh\u00f4ng n\u00e9n ch\u1eb7t c\u00e1t t\u1ed1t m\u00e0 kh\u00f4ng g\u00e2y s\u1ee5p \u0111\u1ed5 khu\u00f4n ho\u1eb7c b\u00e1m d\u00ednh c\u00e1t qu\u00e1 m\u1ee9c. \u00c1p su\u1ea5t cao h\u01a1n ho\u1eb7c th\u1ea5p h\u01a1n d\u1eabn \u0111\u1ebfn nhi\u1ec1u khuy\u1ebft t\u1eadt h\u01a1n do n\u00e9n k\u00e9m ho\u1eb7c kh\u00ed b\u1ecb gi\u1eef l\u1ea1i.<\/p>\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a ch\u00e2n kh\u00f4ng \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a khu\u00f4n v\u00e0 kh\u1ea3 n\u0103ng lo\u1ea1i b\u1ecf kh\u00ed<\/strong><\/h2>\n

\u00c1p su\u1ea5t ch\u00e2n kh\u00f4ng v\u1eeba ph\u1ea3i gi\u00fap c\u1ea3i thi\u1ec7n m\u1eadt \u0111\u1ed9 c\u00e1t xung quanh c\u00e1c khu\u00f4n m\u1eabu \u0111\u1ed3ng th\u1eddi lo\u1ea1i b\u1ecf kh\u00ed sinh ra t\u1eeb qu\u00e1 tr\u00ecnh nhi\u1ec7t ph\u00e2n. \u0110i\u1ec1u n\u00e0y ng\u0103n ng\u1eeba c\u00e1c n\u1ebfp g\u1ea5p v\u00e0 l\u1ed7 r\u1ed7ng. \u00c1p su\u1ea5t ch\u00e2n kh\u00f4ng qu\u00e1 cao c\u00f3 th\u1ec3 g\u00e2y nguy c\u01a1 s\u1ee5p \u0111\u1ed5 khu\u00f4n \u1edf nh\u1eefng ph\u1ea7n m\u1ecfng.<\/p>\n

M\u1ed1i quan h\u1ec7 gi\u1eefa nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 ch\u1ea3y trong gang x\u00e1m<\/strong><\/h2>\n

Nhi\u1ec7t \u0111\u1ed9 si\u00eau nhi\u1ec7t cao h\u01a1n b\u00f9 \u0111\u1eafp cho s\u1ef1 m\u1ea5t nhi\u1ec7t nhanh \u1edf c\u00e1c th\u00e0nh m\u1ecfng. N\u00f3 \u0111\u1ea3m b\u1ea3o s\u1ef1 thay th\u1ebf ho\u00e0n to\u00e0n c\u1ea5u tr\u00fac tr\u01b0\u1edbc khi \u0111\u00f4ng \u0111\u1eb7c. Ph\u1ea1m vi t\u1ed1i \u01b0u c\u00e2n b\u1eb1ng gi\u1eefa t\u00ednh l\u01b0u \u0111\u1ed9ng v\u00e0 s\u1ef1 tho\u00e1t kh\u00ed \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.<\/p>\n

T\u1ed1i \u01b0u h\u00f3a l\u01b0\u1ee3ng carbon t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/strong><\/h2>\n

H\u00e0m l\u01b0\u1ee3ng cacbon t\u01b0\u01a1ng \u0111\u01b0\u01a1ng (CE), \u0111\u01b0\u1ee3c t\u00ednh theo c\u00f4ng th\u1ee9c CE = C + Si\/3 (ph\u1ea7n tr\u0103m), \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea5u tr\u00fac vi m\u00f4, \u0111\u1ed9 ch\u1ea3y v\u00e0 \u0111\u1ed9 co ng\u00f3t c\u1ee7a gang x\u00e1m. Th\u1eed nghi\u1ec7m tr\u00ean ph\u1ea1m vi t\u1eeb 3,6% \u0111\u1ebfn 4,3% cho th\u1ea5y 4,1% l\u00e0 t\u1ed1i \u01b0u. Gi\u00e1 tr\u1ecb n\u00e0y cho t\u1ef7 l\u1ec7 r\u00f2 r\u1ec9 (12%) v\u00e0 x\u1ec9 (10%) th\u1ea5p nh\u1ea5t khi k\u1ebft h\u1ee3p v\u1edbi nhi\u1ec7t \u0111\u1ed9 r\u00f3t ph\u00f9 h\u1ee3p (1515\u20131525\u00b0C). N\u00f3 c\u00e2n b\u1eb1ng s\u1ef1 h\u00ecnh th\u00e0nh graphit \u0111\u1ec3 d\u1ec5 gia c\u00f4ng v\u1edbi \u0111\u1ed9 b\u1ec1n \u0111\u1ee7 \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m \u00e1p su\u1ea5t. N\u00f3 c\u0169ng l\u00e0m gi\u1ea3m \u0111\u1ed9 r\u1ed7 trong c\u00e1c ti\u1ebft di\u1ec7n m\u1ecfng.<\/p>\n

L\u1ee3i \u00edch v\u1ec1 c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a CE \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a<\/strong><\/h2>\n

Vi\u1ec7c x\u1eed l\u00fd CE th\u00edch h\u1ee3p th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e2n b\u1ed1 than ch\u00ec d\u1ea1ng v\u1ea3y, gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng gi\u1ea3m ch\u1ea5n v\u00e0 gia c\u00f4ng. N\u00f3 c\u0169ng l\u00e0m gi\u1ea3m nguy c\u01a1 h\u00ecnh th\u00e0nh cacbua trong c\u00e1c th\u00e0nh m\u1ecfng.<\/p>\n

C\u00e1c t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh b\u1ed5 sung: Xem x\u00e9t v\u1ec1 l\u1edbp ph\u1ee7 v\u00e0 m\u1eabu<\/strong><\/h2>\n

Ki\u1ec3m so\u00e1t \u0111\u1ed9 th\u1ea5m v\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp ph\u1ee7 ch\u1ecbu nhi\u1ec7t<\/strong><\/h3>\n

Kh\u1ea3 n\u0103ng th\u1ea5m kh\u00ed v\u00e0 ch\u1ea5t l\u1ecfng c\u1ee7a l\u1edbp ph\u1ee7 \u0111\u00f3ng vai tr\u00f2 ch\u00ednh trong vi\u1ec7c ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 \u0111i\u1ec1n \u0111\u1ea7y v\u00e0 s\u1ef1 h\u00ecnh th\u00e0nh khuy\u1ebft t\u1eadt. \u0110\u1ed9 d\u00e0y m\u1ee5c ti\u00eau t\u1eeb 0,25\u20130,50 mm c\u00e2n b\u1eb1ng gi\u1eefa kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t v\u00e0 kh\u1ea3 n\u0103ng th\u1ea5m kh\u00ed. Kh\u1ea3 n\u0103ng th\u1ea5m kh\u00ed th\u1ea5p s\u1ebd gi\u1eef l\u1ea1i c\u00e1c s\u1ea3n ph\u1ea9m ph\u00e2n h\u1ee7y nhi\u1ec7t v\u00e0 g\u00e2y ra c\u00e1c khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t nh\u01b0 v\u1ebft xo\u1eafn ho\u1eb7c n\u1ebfp g\u1ea5p. \u0110\u1ed1i v\u1edbi c\u00e1c v\u1eadt \u0111\u00fac th\u00e0nh m\u1ecfng, l\u1edbp ph\u1ee7 c\u00f3 kh\u1ea3 n\u0103ng th\u1ea5m ch\u1ea5t l\u1ecfng cao gi\u00fap lo\u1ea1i b\u1ecf c\u1eb7n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n.<\/p>\n

M\u1eadt \u0111\u1ed9 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a m\u1eabu b\u1ecdt<\/strong><\/h3>\n

X\u1ed1p EPS m\u1eadt \u0111\u1ed9 th\u1ea5p h\u01a1n (c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y) gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng l\u1ea5p \u0111\u1ea7y c\u00e1c ph\u1ea7n m\u1ecfng. Tuy nhi\u00ean, c\u1ea7n ph\u1ea3i x\u1eed l\u00fd c\u1ea9n th\u1eadn \u0111\u1ec3 tr\u00e1nh bi\u1ebfn d\u1ea1ng. S\u1ef1 ch\u00eanh l\u1ec7ch m\u1eadt \u0111\u1ed9 b\u00ean trong c\u00e1c h\u00ecnh d\u1ea1ng g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng cong v\u00eanh ho\u1eb7c l\u1ea5p \u0111\u1ea7y kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u. \u0110i\u1ec1u ki\u1ec7n th\u1ed5i \u0111\u1ed3ng \u0111\u1ec1u gi\u00fap gi\u1ea3m thi\u1ec3u nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y. \u0110\u1ed1i v\u1edbi c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p, c\u00e1c ch\u1ed1t th\u00f4ng h\u01a1i \u0111\u01b0\u1ee3c \u0111\u1ecbnh v\u1ecb tr\u01b0\u1edbc ho\u1eb7c c\u00e1c l\u1ed7 khoan sau khi ph\u1ee7 l\u1edbp gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng tho\u00e1t kh\u00ed.<\/p>\n

C\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 \u0111\u1ed9 n\u00e9n v\u00e0 rung c\u1ee7a c\u00e1t<\/strong><\/h3>\n

Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a t\u1ea7n s\u1ed1 v\u00e0 bi\u00ean \u0111\u1ed9 rung gi\u00fap ng\u0103n ng\u1eeba bi\u1ebfn d\u1ea1ng h\u00ecnh d\u1ea1ng. \u0110\u1ed3ng th\u1eddi, n\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1eadt \u0111\u1ed9 c\u00e1t \u0111\u1ed3ng \u0111\u1ec1u. M\u00e1y \u0111\u1ea7m ngang v\u00e0 m\u00e1y \u0111\u1ea7m d\u1ecdc c\u1ea7n c\u00f3 h\u01b0\u1edbng d\u1eabn c\u1ee5 th\u1ec3 \u0111\u1ec3 l\u1ea5p \u0111\u1ea7y c\u00e1c h\u1ed1c \u0111\u1ed3ng th\u1eddi v\u1edbi vi\u1ec7c th\u00eam c\u00e1t. \u0110i\u1ec1u n\u00e0y tr\u00e1nh \u0111\u01b0\u1ee3c hi\u1ec7n t\u01b0\u1ee3ng s\u1ee5p \u0111\u1ed5 \u1edf c\u00e1c ph\u1ea7n ph\u00eda tr\u00ean.<\/p>\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/strong><\/h2>\n

Nh\u1eefng th\u00e1ch th\u1ee9c ch\u00ednh trong vi\u1ec7c \u0111\u00fac khu\u00f4n x\u1ed1p \u0111\u1ec3 t\u1ea1o v\u1ecf h\u1ed9p s\u1ed1 th\u00e0nh m\u1ecfng l\u00e0 g\u00ec?<\/strong><\/p>\n

Th\u00e0nh m\u1ecfng (5\u20137 mm) l\u00e0m t\u0103ng nguy c\u01a1 b\u1ecb t\u1eafc ngh\u1ebdn do ngu\u1ed9i, l\u1eabn x\u1ec9, r\u00f2 r\u1ec9, g\u1ea5p n\u1ebfp v\u00e0 r\u1ed7 kh\u00ed do l\u00e0m ngu\u1ed9i nhanh, h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p v\u00e0 s\u1ef1 b\u1eaby kh\u00ed t\u1eeb qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y b\u1ecdt. Vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd h\u1ec7 th\u1ed1ng r\u00f3t, h\u01b0\u1edbng ch\u00f4n, \u00e1p su\u1ea5t \u00e2m, nhi\u1ec7t \u0111\u1ed9, h\u00e0m l\u01b0\u1ee3ng carbon t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u00e0 \u0111\u1ed9 th\u1ea5m c\u1ee7a l\u1edbp ph\u1ee7 v\u1eabn r\u1ea5t c\u1ea7n thi\u1ebft.<\/p>\n

Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a b\u1eb1ng \u00e1p su\u1ea5t \u00e2m gi\u00fap c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00fac nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/p>\n

\u00c1p su\u1ea5t \u00e2m t\u1ed1i \u01b0u (kho\u1ea3ng 0,049) \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh n\u00e9n c\u00e1t \u1ed5n \u0111\u1ecbnh, lo\u1ea1i b\u1ecf kh\u00ed hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng s\u1ee5p \u0111\u1ed5 khu\u00f4n ho\u1eb7c d\u00ednh c\u00e1t. N\u00f3 l\u00e0m gi\u1ea3m r\u00f2 r\u1ec9 v\u00e0 c\u00e1c khuy\u1ebft t\u1eadt do x\u1ec9 trong khi v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u00ednh to\u00e0n v\u1eb9n \u1edf c\u00e1c ph\u1ea7n m\u1ecfng.<\/p>\n

H\u00e0m l\u01b0\u1ee3ng cacbon t\u01b0\u01a1ng \u0111\u01b0\u01a1ng n\u00e0o mang l\u1ea1i k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t cho v\u1ecf h\u1ed9p s\u1ed1 gang x\u00e1m HT300?<\/strong><\/p>\n

Kho\u1ea3ng 4,1% CE c\u00e2n b\u1eb1ng gi\u1eefa t\u00ednh l\u01b0u \u0111\u1ed9ng, c\u1ea5u tr\u00fac vi m\u00f4 (graphit d\u1ea1ng v\u1ea3y) v\u00e0 \u0111\u1ed9 b\u1ec1n. N\u00f3 gi\u1ea3m thi\u1ec3u \u0111\u1ed9 x\u1ed1p v\u00e0 r\u00f2 r\u1ec9 \u0111\u1ed3ng th\u1eddi h\u1ed7 tr\u1ee3 kh\u1ea3 n\u0103ng gia c\u00f4ng khi k\u1ebft h\u1ee3p v\u1edbi nhi\u1ec7t \u0111\u1ed9 r\u00f3t ph\u00f9 h\u1ee3p.<\/p>\n

L\u1edbp ph\u1ee7 ch\u1ecbu nhi\u1ec7t c\u00f3 vai tr\u00f2 quan tr\u1ecdng nh\u01b0 th\u1ebf n\u00e0o trong qu\u00e1 tr\u00ecnh \u0111\u00fac khu\u00f4n x\u1ed1p th\u00e0nh m\u1ecfng?<\/strong><\/p>\n

\u0110\u1ed9 th\u1ea5m v\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp ph\u1ee7 ki\u1ec3m so\u00e1t tr\u1ef1c ti\u1ebfp t\u1ed1c \u0111\u1ed9 \u0111i\u1ec1n \u0111\u1ea7y, s\u1ef1 tho\u00e1t kh\u00ed\/l\u1ecfng v\u00e0 s\u1ef1 h\u00ecnh th\u00e0nh khuy\u1ebft t\u1eadt. C\u00e1c \u0111\u1eb7c t\u00ednh c\u00e2n b\u1eb1ng gi\u00fap ng\u0103n ng\u1eeba n\u1ebfp nh\u0103n, n\u1ebfp g\u1ea5p v\u00e0 c\u00e1c khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t. Ch\u00fang c\u0169ng cung c\u1ea5p kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t cho c\u00e1c ph\u1ea7n m\u1ecfng.<\/p>\n

\u0110\u1ed1i t\u00e1c v\u1edbi m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 nh\u00e0 cung c\u1ea5p thi\u1ebft b\u1ecb \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t h\u00e0ng \u0111\u1ea7u<\/strong><\/h2>\n

C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 nh\u00e0 cung c\u1ea5p v\u1eadt t\u01b0 \u0111\u00fac \u0111ang t\u00ecm ki\u1ebfm c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady, hi\u1ec7u qu\u1ea3 cao cho d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t \u0111\u00fac khu\u00f4n x\u1ed1p c\u00f3 th\u1ec3 h\u01b0\u1edfng l\u1ee3i t\u1eeb c\u00e1c thi\u1ebft b\u1ecb ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho c\u00e1c b\u1ed9 ph\u1eadn th\u00e0nh m\u1ecfng v\u00e0 ph\u1ee9c t\u1ea1p nh\u01b0 v\u1ecf h\u1ed9p s\u1ed1. C\u00f4ng ngh\u1ec7 OC<\/strong><\/a> C\u00f4ng ty \u0111\u00f3ng vai tr\u00f2 l\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t, nh\u00e0 cung c\u1ea5p v\u00e0 nh\u00e0 m\u00e1y chuy\u00ean nghi\u1ec7p chuy\u00ean v\u1ec1 thi\u1ebft b\u1ecb \u0111\u00fac khu\u00f4n x\u1ed1p th\u00f4ng minh cao c\u1ea5p, bao g\u1ed3m: M\u00e1y \u0111\u00fac b\u1ecdt<\/strong><\/a>, m\u00e1y t\u1ea1o b\u1ecdt tr\u01b0\u1edbc v\u00e0 h\u1ec7 th\u1ed1ng khu v\u1ef1c m\u00e0u tr\u1eafng ho\u00e0n ch\u1ec9nh.<\/p>\n

D\u00f2ng thi\u1ebft b\u1ecb bao g\u1ed3m c\u00e1c h\u1ec7 th\u1ed1ng s\u1ea3n xu\u1ea5t khu\u00f4n m\u1eabu b\u1ecdt x\u1ed1p \u0111\u1ed9 ch\u00ednh x\u00e1c cao, c\u00e1c tr\u1ea1m ph\u1ee7 ti\u00ean ti\u1ebfn, b\u00e0n n\u00e9n rung v\u00e0 c\u00e1c d\u00e2y chuy\u1ec1n \u0111\u00fac b\u1ecdt x\u1ed1p t\u1ef1 \u0111\u1ed9ng ho\u00e0n to\u00e0n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd c\u00e1t v\u00e0 ki\u1ec3m so\u00e1t ch\u00e2n kh\u00f4ng v\u01b0\u1ee3t tr\u1ed9i. Kh\u00e1m ph\u00e1 to\u00e0n b\u1ed9 d\u00f2ng thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t \u0111\u00fac b\u1ecdt x\u1ed1p v\u00e0 li\u00ean h\u1ec7 v\u1edbi nh\u00f3m<\/strong><\/a> D\u00e0nh cho c\u00e1c c\u1ea5u h\u00ecnh d\u00e2y chuy\u1ec1n t\u00f9y ch\u1ec9nh nh\u1eb1m n\u00e2ng cao n\u0103ng su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 \u0111\u00fac.<\/p>","protected":false},"excerpt":{"rendered":"

Lost foam casting, also known as evaporative pattern casting or the EPC process, stands as an advanced near-net-shape forming technology widely used in modern foundry production. This method offers excellent dimensional accuracy, good surface finish, and low environmental impact compared to traditional sand casting. In the process, a polystyrene foam pattern coated with refractory material […]<\/p>\n","protected":false},"author":3,"featured_media":4975,"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-4972","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\/4972","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=4972"}],"version-history":[{"count":3,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4972\/revisions"}],"predecessor-version":[{"id":4983,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4972\/revisions\/4983"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media\/4975"}],"wp:attachment":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media?parent=4972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/categories?post=4972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/tags?post=4972"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}