{"id":4970,"date":"2026-04-23T00:00:51","date_gmt":"2026-04-22T16:00:51","guid":{"rendered":"https:\/\/www.oc-epc.com\/?p=4970"},"modified":"2026-04-22T14:31:24","modified_gmt":"2026-04-22T06:31:24","slug":"cach-phong-ngua-nut-vo-trong-cac-san-pham-duc-khuon-xop","status":"publish","type":"post","link":"https:\/\/www.oc-epc.com\/vi\/news-blog\/industry-news\/how-to-prevent-cracking-in-lost-foam-castings\/","title":{"rendered":"C\u00e1ch ph\u00f2ng ng\u1eeba n\u1ee9t v\u1ee1 trong c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac khu\u00f4n x\u1ed1p"},"content":{"rendered":"

M\u1ea5t b\u1ecdt \u0111\u00fac<\/strong><\/a>\u0110\u00fac khu\u00f4n x\u1ed1p, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u00fac khu\u00f4n bay h\u01a1i, t\u1ea1o ra c\u00e1c chi ti\u1ebft kim lo\u1ea1i ph\u1ee9c t\u1ea1p v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t t\u1ed1t. N\u00f3 gi\u00fap gi\u1ea3m thi\u1ec3u nhu c\u1ea7u gia c\u00f4ng. C\u00e1c x\u01b0\u1edfng \u0111\u00fac \u01b0a chu\u1ed9ng quy tr\u00ecnh n\u00e0y v\u00ec chi ph\u00ed th\u1ea5p v\u00e0 t\u00ednh linh ho\u1ea1t trong thi\u1ebft k\u1ebf trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4, h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 m\u00e1y m\u00f3c h\u1ea1ng n\u1eb7ng. Tuy nhi\u00ean, n\u1ee9t v\u1eabn l\u00e0 m\u1ed9t khuy\u1ebft t\u1eadt ph\u1ed5 bi\u1ebfn. N\u00f3 l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n c\u1ee7a chi ti\u1ebft, t\u0103ng t\u1ef7 l\u1ec7 ph\u1ebf ph\u1ea9m v\u00e0 t\u0103ng chi ph\u00ed s\u1ea3n xu\u1ea5t. \u1ee8ng su\u1ea5t nhi\u1ec7t, co ng\u00f3t trong qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c v\u00e0 c\u00e1c bi\u1ebfn \u0111\u1ed5i trong quy tr\u00ecnh th\u01b0\u1eddng l\u00e0 nguy\u00ean nh\u00e2n g\u00e2y ra c\u00e1c v\u1ebft n\u1ee9t n\u00e0y. Kh\u1eafc ph\u1ee5c n\u1ee9t c\u1ea7n m\u1ed9t k\u1ebf ho\u1ea1ch t\u1eebng b\u01b0\u1edbc. K\u1ebf ho\u1ea1ch n\u00e0y k\u1ebft h\u1ee3p c\u00e1c quy t\u1eafc thi\u1ebft k\u1ebf, l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u, ki\u1ec3m so\u00e1t quy tr\u00ecnh v\u00e0 x\u1eed l\u00fd sau khi \u0111\u00fac. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t s\u1eed d\u1ee5ng c\u00e1c b\u01b0\u1edbc ph\u00f2ng ng\u1eeba c\u1ee5 th\u1ec3 s\u1ebd \u0111\u1ea1t \u0111\u01b0\u1ee3c n\u0103ng su\u1ea5t cao h\u01a1n v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00fac t\u1ed1t h\u01a1n. B\u00e0i vi\u1ebft n\u00e0y xem x\u00e9t c\u00e1c nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y n\u1ee9t trong c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac khu\u00f4n x\u1ed1p. N\u00f3 c\u0169ng li\u1ec7t k\u00ea c\u00e1c b\u01b0\u1edbc ph\u00f2ng ng\u1eeba \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh d\u1ef1a tr\u00ean c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t trong ng\u00e0nh.<\/p>\n

\"Ng\u0103n<\/p>\n

T\u00ecm hi\u1ec3u nguy\u00ean nh\u00e2n g\u00e2y n\u1ee9t trong c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac khu\u00f4n x\u1ed1p<\/strong><\/h2>\n

Ph\u00e1 v\u1ee1 \u0111\u00fac khu\u00f4n x\u1ed1p m\u1ea5t<\/strong><\/a> Ngu\u1ed3n g\u1ed1c ch\u1ee7 y\u1ebfu l\u00e0 do \u1ee9ng su\u1ea5t nhi\u1ec7t. C\u00e1c \u1ee9ng su\u1ea5t n\u00e0y xu\u1ea5t hi\u1ec7n trong qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 nhanh ch\u00f3ng khi kim lo\u1ea1i n\u00f3ng ch\u1ea3y thay th\u1ebf khu\u00f4n x\u1ed1p v\u00e0 v\u1eadt \u0111\u00fac ngu\u1ed9i \u0111i. Khu\u00f4n x\u1ed1p bi\u1ebfn th\u00e0nh h\u01a1i khi ti\u1ebfp x\u00fac v\u1edbi kim lo\u1ea1i. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra kh\u00ed c\u1ea7n ph\u1ea3i tho\u00e1t ra ngo\u00e0i qua l\u1edbp ph\u1ee7 v\u00e0 c\u00e1t xung quanh. Vi\u1ec7c tho\u00e1t kh\u00ed kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u ho\u1eb7c \u0111\u1ed9 th\u1ea5m th\u1ea5p g\u00e2y ra s\u1ef1 t\u00edch t\u1ee5 \u00e1p su\u1ea5t \u1edf m\u1ed9t s\u1ed1 \u0111i\u1ec3m. \u00c1p su\u1ea5t n\u00e0y sau \u0111\u00f3 t\u1ea1o ra \u1ee9ng su\u1ea5t k\u00e9o v\u01b0\u1ee3t qu\u00e1 \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n

S\u1ef1 co ng\u00f3t l\u00e0 m\u1ed9t nguy\u00ean nh\u00e2n quan tr\u1ecdng kh\u00e1c. Khi kim lo\u1ea1i n\u00f3ng ch\u1ea3y \u0111\u00f4ng \u0111\u1eb7c v\u00e0 co l\u1ea1i, l\u01b0\u1ee3ng kim lo\u1ea1i c\u1ea5p v\u00e0o kh\u00f4ng \u0111\u1ee7 t\u1eeb \u1ed1ng d\u1eabn ho\u1eb7c h\u1ec7 th\u1ed1ng r\u00f3t k\u00e9m s\u1ebd d\u1eabn \u0111\u1ebfn c\u00e1c l\u1ed7 r\u1ed7ng ho\u1eb7c v\u1ebft n\u1ee9t n\u00f3ng. \u0110i\u1ec1u n\u00e0y x\u1ea3y ra nhi\u1ec1u h\u01a1n \u1edf c\u00e1c h\u1ee3p kim c\u00f3 t\u1ef7 l\u1ec7 co ng\u00f3t cao nh\u01b0 m\u1ed9t s\u1ed1 lo\u1ea1i nh\u00f4m v\u00e0 th\u00e9p. Trong c\u00e1c quy tr\u00ecnh \u0111\u00fac khu\u00f4n x\u1ed1p, vi\u1ec7c thi\u1ebfu khoang khu\u00f4n truy\u1ec1n th\u1ed1ng l\u00e0m cho v\u1ea5n \u0111\u1ec1 tr\u1edf n\u00ean nghi\u00eam tr\u1ecdng h\u01a1n. Khu\u00f4n c\u00e1t cung c\u1ea5p \u00edt s\u1ef1 h\u1ed7 tr\u1ee3 h\u01a1n so v\u1edbi khu\u00f4n v\u0129nh c\u1eedu. N\u00f3 cho ph\u00e9p h\u00ecnh d\u1ea1ng thay \u0111\u1ed5i d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c co ng\u00f3t.<\/p>\n

H\u1ec7 th\u1ed1ng d\u1eabn li\u1ec7u v\u00e0 \u1ed1ng n\u00e2ng k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng l\u00e0m cho qu\u00e1 tr\u00ecnh \u0111i\u1ec1n \u0111\u1ea7y v\u00e0 l\u00e0m ngu\u1ed9i kh\u00f4ng \u0111\u1ec1u c\u00e0ng tr\u1edf n\u00ean t\u1ed3i t\u1ec7 h\u01a1n. Lu\u1ed3ng ch\u1ea3y r\u1ed1i t\u1eeb c\u00e1c c\u1eeda d\u1eabn li\u1ec7u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf k\u00e9m s\u1ebd \u0111\u01b0a kh\u00f4ng kh\u00ed v\u00e0o ho\u1eb7c t\u1ea1o ra c\u00e1c \u0111i\u1ec3m n\u00f3ng. \u1ed0ng n\u00e2ng qu\u00e1 nh\u1ecf ho\u1eb7c \u0111\u1eb7t sai v\u1ecb tr\u00ed kh\u00f4ng b\u00f9 \u0111\u1eafp \u0111\u01b0\u1ee3c s\u1ef1 co ng\u00f3t \u1edf c\u00e1c ph\u1ea7n d\u00e0y. Ch\u1ea5t l\u01b0\u1ee3ng khu\u00f4n v\u00e0 m\u1eabu c\u0169ng r\u1ea5t quan tr\u1ecdng. M\u1eabu b\u1ecdt c\u00f3 m\u1eadt \u0111\u1ed9 th\u1ea5p ho\u1eb7c kh\u00f4ng \u1ed5n \u0111\u1ecbnh c\u00f3 th\u1ec3 b\u1ecb bi\u1ebfn d\u1ea1ng ho\u1eb7c \u0111\u1ec3 l\u1ea1i c\u1eb7n. Nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y l\u00e0m gi\u00e1n \u0111o\u1ea1n d\u00f2ng ch\u1ea3y c\u1ee7a kim lo\u1ea1i. T\u01b0\u01a1ng t\u1ef1, l\u1edbp ph\u1ee7 m\u1ecfng ho\u1eb7c \u0111\u1ed9 n\u00e9n c\u00e1t k\u00e9m l\u00e0m gi\u1ea3m \u0111\u1ed9 d\u1eabn nhi\u1ec7t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a khu\u00f4n. Ch\u00fang t\u1eadp trung \u1ee9ng su\u1ea5t \u1edf nh\u1eefng v\u00f9ng y\u1ebfu.<\/p>\n

C\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c bao g\u1ed3m s\u1ef1 thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n h\u1ee3p kim v\u00e0 s\u1ef1 bi\u1ebfn \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh r\u00f3t. Nhi\u1ec7t \u0111\u1ed9 r\u00f3t cao l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u00e2n h\u1ee7y khu\u00f4n m\u1eabu nh\u01b0ng l\u00e0m cho \u0111\u1ed9 d\u1ed1c nhi\u1ec7t tr\u1edf n\u00ean l\u1edbn h\u01a1n. T\u1ed1c \u0111\u1ed9 l\u00e0m ngu\u1ed9i nhanh \u1edf c\u00e1c ti\u1ebft di\u1ec7n m\u1ecfng d\u1eabn \u0111\u1ebfn g\u00e3y gi\u00f2n. C\u00e1c x\u01b0\u1edfng \u0111\u00fac b\u1ecf qua nh\u1eefng nguy\u00ean nh\u00e2n li\u00ean quan n\u00e0y s\u1ebd th\u1ea5y hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t x\u1ea3y ra l\u1eb7p \u0111i l\u1eb7p l\u1ea1i. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t \u0111\u00fang \u0111\u1ed1i v\u1edbi c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p v\u1edbi \u0111\u1ed9 d\u00e0y th\u00e0nh kh\u00e1c nhau. Ph\u00e2n t\u00edch nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 to\u00e0n di\u1ec7n th\u01b0\u1eddng s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m m\u00f4 ph\u1ecfng. N\u00f3 gi\u00fap t\u00ecm ra ch\u00ednh x\u00e1c c\u00e1c \u0111i\u1ec3m t\u1eadp trung \u1ee9ng su\u1ea5t v\u00e0 h\u01b0\u1edbng d\u1eabn c\u00e1c bi\u1ec7n ph\u00e1p kh\u1eafc ph\u1ee5c.<\/p>\n

C\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba n\u1ee9t v\u1ee1 trong c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac khu\u00f4n x\u1ed1p<\/strong><\/h2>\n

\"D\u00e2y<\/p>\n

1. T\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf \u0111\u00fac<\/strong><\/h3>\n

Nh\u1eefng thay \u0111\u1ed5i trong thi\u1ebft k\u1ebf t\u1ed1t gi\u00fap gi\u1ea3m s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t. Ch\u00fang c\u0169ng gi\u00fap qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c di\u1ec5n ra \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n. Nh\u1eefng b\u01b0\u1edbc n\u00e0y l\u00e0m gi\u1ea3m nguy c\u01a1 n\u1ee9t v\u1ee1 trong c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac khu\u00f4n x\u1ed1p.<\/p>\n

\u0110\u1ed9 d\u00e0y th\u00e0nh \u0111\u1ed3ng nh\u1ea5t<\/strong><\/h4>\n

C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf n\u00ean gi\u1eef \u0111\u1ed9 d\u00e0y th\u00e0nh \u0111\u1ed3ng nh\u1ea5t trong to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh \u0111\u00fac. \u0110i\u1ec1u n\u00e0y tr\u00e1nh nh\u1eefng thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t t\u1ea1o ra c\u00e1c \u0111i\u1ec3m n\u00f3ng ho\u1eb7c t\u1ed1c \u0111\u1ed9 l\u00e0m ngu\u1ed9i kh\u00e1c nhau. S\u1ef1 thay \u0111\u1ed5i tr\u00ean 20% th\u01b0\u1eddng g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng r\u1ed7 co ng\u00f3t ho\u1eb7c n\u1ee9t n\u00f3ng. Trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00fac khu\u00f4n x\u1ed1p, \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng \u0111\u1ec1u gi\u00fap ph\u00e2n h\u1ee7y khu\u00f4n m\u1eabu v\u00e0 d\u00f2ng ch\u1ea3y kim lo\u1ea1i \u0111\u1ed3ng \u0111\u1ec1u. N\u00f3 ph\u00e2n t\u00e1n \u1ee9ng su\u1ea5t nhi\u1ec7t m\u1ed9t c\u00e1ch c\u00e2n b\u1eb1ng. C\u00e1c c\u00f4ng c\u1ee5 m\u00f4 ph\u1ecfng ki\u1ec3m tra thi\u1ebft k\u1ebf. Ch\u00fang d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1eddng \u0111i c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c v\u00e0 ch\u1ec9 ra c\u00e1c khu v\u1ef1c c\u00f3 v\u1ea5n \u0111\u1ec1 tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u s\u1ea3n xu\u1ea5t.<\/p>\n

C\u00e1c g\u00f3c v\u00e0 c\u1ea1nh \u0111\u01b0\u1ee3c bo tr\u00f2n<\/strong><\/h4>\n

C\u00e1c g\u00f3c v\u00e0 c\u1ea1nh s\u1eafc nh\u1ecdn \u0111\u00f3ng vai tr\u00f2 l\u00e0 \u0111i\u1ec3m ch\u1ecbu l\u1ef1c, n\u01a1i c\u00e1c v\u1ebft n\u1ee9t b\u1eaft \u0111\u1ea7u h\u00ecnh th\u00e0nh d\u01b0\u1edbi t\u1ea3i tr\u1ecdng k\u00e9o. Vi\u1ec7c th\u00eam c\u00e1c g\u00f3c bo tr\u00f2n l\u1edbn v\u1edbi b\u00e1n k\u00ednh \u00edt nh\u1ea5t t\u1eeb \u200b\u200b3 \u0111\u1ebfn 5 mm s\u1ebd gi\u00fap \u00edch. K\u00edch th\u01b0\u1edbc ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc chi ti\u1ebft. C\u00e1c g\u00f3c bo tr\u00f2n n\u00e0y ph\u00e2n t\u00e1n \u1ee9ng su\u1ea5t v\u00e0 c\u1ea3i thi\u1ec7n d\u00f2ng ch\u1ea3y kim lo\u1ea1i xung quanh khu\u00f4n m\u1eabu. S\u1ef1 thay \u0111\u1ed5i n\u00e0y c\u0169ng gi\u00fap vi\u1ec7c ph\u1ee7 l\u1edbp v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c tr\u01a1n tru h\u01a1n. N\u00f3 l\u00e0m gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng b\u1eaby kh\u00ed trong qu\u00e1 tr\u00ecnh bay h\u01a1i b\u1ecdt v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00fac t\u1ed5ng th\u1ec3.<\/p>\n

T\u0103ng vi\u1ec7n<\/strong><\/h4>\n

Vi\u1ec7c b\u1ed1 tr\u00ed c\u00e1c g\u00e2n, v\u00e1ch ho\u1eb7c g\u1edd \u1edf nh\u1eefng v\u00f9ng ch\u1ecbu l\u1ef1c cao gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n m\u00e0 kh\u00f4ng c\u1ea7n th\u00eam qu\u00e1 nhi\u1ec1u v\u1eadt li\u1ec7u. Nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m n\u00e0y gi\u00fap ch\u1ed1ng l\u1ea1i s\u1ef1 bi\u1ebfn d\u1ea1ng do co ng\u00f3t. Ch\u00fang c\u0169ng t\u1ea1o ra th\u00eam c\u00e1c \u0111\u01b0\u1eddng d\u1eabn v\u1eadt li\u1ec7u trong qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c. Trong ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac khu\u00f4n x\u1ed1p, c\u00e1c chi ti\u1ebft gia c\u01b0\u1eddng ph\u1ea3i th\u1eb3ng h\u00e0ng v\u1edbi c\u1ea5u tr\u00fac x\u1ed1p c\u1ee7a khu\u00f4n m\u1eabu. \u0110i\u1ec1u n\u00e0y gi\u00fap duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 ng\u0103n ng\u1eeba n\u1ee9t v\u1ee1 c\u1ee5c b\u1ed9.<\/p>\n

2. Ch\u1ecdn lo\u1ea1i h\u1ee3p kim ph\u00f9 h\u1ee3p<\/strong><\/h3>\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn h\u1ee3p kim \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 d\u1ec5 h\u00ecnh th\u00e0nh v\u1ebft n\u1ee9t. C\u00e1c h\u1ee3p kim c\u00f3 \u0111\u1ed9 nh\u1ea1y c\u1ea3m v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t n\u00f3ng th\u1ea5p, \u0111\u1ed9 ch\u1ea3y t\u1ed1t v\u00e0 t\u1ef7 l\u1ec7 co ng\u00f3t v\u1eeba ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t trong quy tr\u00ecnh \u0111\u00fac khu\u00f4n x\u1ed1p. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac b\u1eb1ng nh\u00f4m, h\u1ee3p kim c\u00f3 ch\u1ee9a silic v\u00e0 magie cho kh\u1ea3 n\u0103ng \u0111\u00fac t\u1ed1t h\u01a1n v\u00e0 \u00edt b\u1ecb n\u1ee9t h\u01a1n. C\u00e1c lo\u1ea1i th\u00e9p v\u00e0 s\u1eaft \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n khi h\u00e0m l\u01b0\u1ee3ng cacbon v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t. Nh\u1eefng nguy\u00ean t\u1ed1 n\u00e0y l\u00e0m t\u0103ng \u0111\u1ed9 d\u1ebbo \u1edf nhi\u1ec7t \u0111\u1ed9 cao. Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u ph\u1ea3i xem x\u00e9t chu k\u1ef3 nhi\u1ec7t \u0111\u1eb7c bi\u1ec7t c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u00fac khu\u00f4n x\u1ed1p. Vi\u1ec7c th\u00e1o khu\u00f4n nhanh ch\u00f3ng l\u00e0m thay \u0111\u1ed5i qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac c\u00e1t truy\u1ec1n th\u1ed1ng. L\u00e0m vi\u1ec7c v\u1edbi c\u00e1c nh\u00e0 luy\u1ec7n kim h\u1ecdc \u0111\u1ea3m b\u1ea3o r\u1eb1ng vi\u1ec7c l\u1ef1a ch\u1ecdn h\u1ee3p kim ph\u00f9 h\u1ee3p v\u1edbi c\u1ea3 nhu c\u1ea7u c\u01a1 h\u1ecdc v\u00e0 nhu c\u1ea7u quy tr\u00ecnh.<\/p>\n

3. Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 t\u1ed1c \u0111\u1ed9 r\u00f3t<\/strong><\/h3>\n

Ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn c\u00e1c th\u00f4ng s\u1ed1 r\u00f3t gi\u00fap ng\u0103n ng\u1eeba s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 l\u1edbn v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng nhi\u1ec5u lo\u1ea1n.<\/p>\n

Nhi\u1ec7t \u0111\u1ed9 r\u00f3t t\u1ed1i \u01b0u<\/strong><\/h4>\n

R\u00f3t \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p nh\u1ea5t m\u00e0 v\u1eabn \u0111\u1ea3m b\u1ea3o \u0111\u1ea7y khu\u00f4n s\u1ebd gi\u1ea3m thi\u1ec3u s\u1ed1c nhi\u1ec7t cho khu\u00f4n c\u00e1t v\u00e0 l\u1edbp ph\u1ee7. \u0110\u1ed1i v\u1edbi h\u1ee3p kim nh\u00f4m, nhi\u1ec7t \u0111\u1ed9 t\u1eeb 680\u00b0C \u0111\u1ebfn 750\u00b0C th\u01b0\u1eddng c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 ch\u1ea3y v\u00e0 \u1ee9ng su\u1ea5t th\u1ea5p h\u01a1n. Nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n s\u1ebd \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh t\u1ea1o kh\u00ed nh\u01b0ng l\u00e0m t\u0103ng nguy c\u01a1 n\u1ee9t do \u0111\u1ed9 d\u1ed1c l\u00e0m ngu\u1ed9i l\u1edbn h\u01a1n. H\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c v\u00e0 h\u1ec7 th\u1ed1ng r\u00f3t t\u1ef1 \u0111\u1ed9ng gi\u00fap duy tr\u00ec k\u1ebft qu\u1ea3 \u1ed5n \u0111\u1ecbnh gi\u1eefa c\u00e1c m\u1ebb s\u1ea3n ph\u1ea9m.<\/p>\n

T\u1ed1c \u0111\u1ed9 r\u00f3t \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/strong><\/h4>\n

T\u1ed1c \u0111\u1ed9 r\u00f3t \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ec1u \u0111\u1eb7n h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c theo h\u01b0\u1edbng t\u1eeb ph\u1ea7n m\u1ecfng \u0111\u1ebfn ph\u1ea7n d\u00e0y. Trong ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac khu\u00f4n x\u1ed1p, t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y x\u1ed1p. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p kh\u00ed tho\u00e1t ra m\u00e0 kh\u00f4ng t\u1ea1o ra \u00e1p su\u1ea5t g\u00e2y h\u1ea1i. H\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng v\u1edbi c\u1ea3m bi\u1ebfn l\u01b0u l\u01b0\u1ee3ng cho k\u1ebft qu\u1ea3 l\u1eb7p l\u1ea1i \u0111\u01b0\u1ee3c. Ch\u00fang c\u00f3 th\u1ec3 gi\u1ea3m t\u1ef7 l\u1ec7 l\u1ed7i l\u00ean \u0111\u1ebfn 30% trong c\u00e1c thi\u1ebft l\u1eadp t\u1ed1i \u01b0u.<\/p>\n

4. C\u1ea3i thi\u1ec7n h\u1ec7 th\u1ed1ng van \u0111i\u1ec1u ti\u1ebft v\u00e0 \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u<\/strong><\/h3>\n

H\u1ec7 th\u1ed1ng d\u1eabn li\u1ec7u v\u00e0 t\u1ea1o r\u00e3nh t\u1ed1t gi\u00fap b\u00f9 \u0111\u1eafp s\u1ef1 co ng\u00f3t. Ch\u00fang c\u0169ng \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh \u0111\u1ed5 \u0111\u1ea7y di\u1ec5n ra \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n

Thi\u1ebft k\u1ebf c\u1ed5ng ph\u00f9 h\u1ee3p<\/strong><\/h4>\n

Nhi\u1ec1u c\u1eeda r\u00f3t t\u1ea1i c\u00e1c v\u1ecb tr\u00ed quan tr\u1ecdng gi\u00fap ph\u00e2n t\u00e1n kim lo\u1ea1i \u0111\u1ec1u v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c \u0111i\u1ec3m n\u00f3ng. R\u00f3t kim lo\u1ea1i t\u1eeb \u0111\u00e1y ho\u1eb7c b\u00ean h\u00f4ng t\u1ea1o ra \u00edt nhi\u1ec5u lo\u1ea1n h\u01a1n so v\u1edbi r\u00f3t t\u1eeb tr\u00ean xu\u1ed1ng. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea3o v\u1ec7 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a l\u1edbp ph\u1ee7 v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a hoa v\u0103n. H\u1ec7 th\u1ed1ng r\u00f3t kim lo\u1ea1i v\u1edbi c\u00e1c r\u00e3nh d\u1eabn h\u00ecnh n\u00f3n v\u00e0 b\u1ed9 l\u1ecdc g\u1ed1m gi\u00fap gi\u1eef l\u1ea1i c\u00e1c t\u1ea1p ch\u1ea5t v\u00e0 h\u1ed7 tr\u1ee3 d\u00f2ng ch\u1ea3y tr\u01a1n tru.<\/p>\n

K\u00edch th\u01b0\u1edbc v\u00e0 v\u1ecb tr\u00ed \u1ed1ng \u0111\u1ee9ng ph\u00f9 h\u1ee3p<\/strong><\/h4>\n

\u1ed0ng d\u1eabn li\u1ec7u ph\u1ea3i cung c\u1ea5p kim lo\u1ea1i cho c\u00e1c ph\u1ea7n cu\u1ed1i c\u00f9ng \u0111\u00f4ng \u0111\u1eb7c. Trong ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac khu\u00f4n x\u1ed1p, c\u00e1c \u1ed1ng d\u1eabn li\u1ec7u ph\u00eda tr\u00ean c\u00e1c ph\u1ea7n nh\u00f4 ra d\u00e0y ho\u1eb7c c\u00e1c m\u1ed1i n\u1ed1i ho\u1ea1t \u0111\u1ed9ng r\u1ea5t hi\u1ec7u qu\u1ea3. C\u00e1c t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc d\u1ef1a tr\u00ean ph\u01b0\u01a1ng ph\u00e1p m\u00f4 \u0111un \u0111\u1ea3m b\u1ea3o \u0111\u1ee7 th\u1ec3 t\u00edch trong khi h\u1ea1n ch\u1ebf t\u1ed5n th\u1ea5t n\u0103ng su\u1ea5t. C\u00e1c v\u1eadt li\u1ec7u l\u00e0m m\u00e1t ho\u1eb7c c\u00e1ch nhi\u1ec7t xung quanh \u1ed1ng d\u1eabn li\u1ec7u gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 c\u1ea5p li\u1ec7u h\u01a1n n\u1eefa.<\/p>\n

5. N\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng khu\u00f4n m\u1eabu v\u00e0 hoa v\u0103n<\/strong><\/h3>\n

C\u00e1c m\u1eabu v\u00e0 khu\u00f4n \u0111\u00fac ch\u1ea5t l\u01b0\u1ee3ng cao l\u00e0 n\u1ec1n t\u1ea3ng cho vi\u1ec7c t\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac kh\u00f4ng c\u00f3 khuy\u1ebft t\u1eadt.<\/p>\n

V\u1eadt li\u1ec7u m\u1eabu ch\u1ea5t l\u01b0\u1ee3ng cao<\/strong><\/h4>\n

X\u1ed1p EPS \u1ed5n \u0111\u1ecbnh, m\u1eadt \u0111\u1ed9 th\u1ea5p v\u1edbi s\u1ef1 ph\u00e2n b\u1ed1 h\u1ea1t \u0111\u1ed3ng \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng trong qu\u00e1 tr\u00ecnh ph\u1ee7 v\u00e0 x\u1eed l\u00fd. C\u00e1c k\u1ef9 thu\u1eadt gi\u00e3n n\u1edf tr\u01b0\u1edbc v\u00e0 t\u1ea1o h\u00ecnh ti\u00ean ti\u1ebfn t\u1ea1o ra c\u00e1c hoa v\u0103n c\u00f3 m\u1eadt \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh. Ch\u00fang gi\u1ea3m thi\u1ec3u c\u1eb7n b\u1ea9n v\u00e0 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng th\u1ea5m h\u00fat. D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t hoa v\u0103n t\u1ef1 \u0111\u1ed9ng duy tr\u00ec dung sai ch\u1eb7t ch\u1ebd c\u1ea7n thi\u1ebft cho c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p.<\/p>\n

Chu\u1ea9n b\u1ecb khu\u00f4n \u0111\u00fang c\u00e1ch<\/strong><\/h4>\n

Vi\u1ec7c n\u00e9n ch\u1eb7t c\u00e1t ch\u00ednh x\u00e1c xung quanh c\u1ee5m khu\u00f4n m\u1eabu \u0111\u01b0\u1ee3c ph\u1ee7 l\u1edbp gi\u00fap lo\u1ea1i b\u1ecf c\u00e1c l\u1ed7 r\u1ed7ng g\u00e2y t\u1eadp trung \u1ee9ng su\u1ea5t. B\u00e0n n\u00e9n rung c\u00f3 h\u1ed7 tr\u1ee3 h\u00fat ch\u00e2n kh\u00f4ng t\u1ea1o ra khu\u00f4n \u0111\u1eb7c v\u00e0 c\u00f3 \u0111\u1ed9 th\u1ea5m kh\u00ed t\u1ed1t. \u0110\u1ed9 d\u00e0y l\u1edbp ph\u1ee7 v\u00e0 chu k\u1ef3 s\u1ea5y ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp ch\u00ednh x\u00e1c. Ch\u00fang ph\u1ea3i \u0111\u1ea3m b\u1ea3o \u0111\u1ee7 \u0111\u1ed9 b\u1ec1n m\u00e0 kh\u00f4ng c\u1ea3n tr\u1edf s\u1ef1 tho\u00e1t kh\u00ed.<\/p>\n

6. Th\u1ef1c hi\u1ec7n x\u1eed l\u00fd nhi\u1ec7t<\/strong><\/h3>\n

X\u1eed l\u00fd nhi\u1ec7t sau khi \u0111\u00fac gi\u00fap gi\u1ea3i ph\u00f3ng \u1ee9ng su\u1ea5t t\u00edch t\u1ee5 v\u00e0 c\u1ea3i thi\u1ec7n c\u1ea5u tr\u00fac vi m\u00f4. C\u00e1c chu k\u1ef3 \u1ee7 ho\u1eb7c gi\u1ea3m \u1ee9ng su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t l\u00e0m gi\u1ea3m l\u1ef1c k\u00e9o b\u00ean trong g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t sau n\u00e0y. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac b\u1eb1ng nh\u00f4m, x\u1eed l\u00fd dung d\u1ecbch v\u00e0 l\u00e3o h\u00f3a gi\u00fap c\u1ea3i thi\u1ec7n c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc \u0111\u1ed3ng th\u1eddi h\u1ea1n ch\u1ebf bi\u1ebfn d\u1ea1ng. C\u00e1c quy tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi lo\u1ea1i h\u1ee3p kim v\u00e0 \u0111\u1ed9 d\u00e0y ti\u1ebft di\u1ec7n s\u1ebd ho\u00e0n thi\u1ec7n k\u1ebf ho\u1ea1ch ph\u00f2ng ng\u1eeba.<\/p>\n

C\u00e1c tr\u01b0\u1eddng h\u1ee3p nghi\u00ean c\u1ee9u v\u00e0 v\u00ed d\u1ee5<\/strong><\/h2>\n

Trong m\u1ed9t tr\u01b0\u1eddng h\u1ee3p v\u1edbi c\u00e1c chi ti\u1ebft \u0111\u00fac gang d\u1ebbo th\u00e0nh m\u1ecfng c\u00f3 g\u00f3c c\u1ea1nh s\u1eafc nh\u1ecdn, hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t v\u1ee1 x\u1ea3y ra \u1edf h\u01a1n 40% s\u1ea3n ph\u1ea9m. Nguy\u00ean nh\u00e2n l\u00e0 do \u1ee9ng su\u1ea5t nhi\u1ec7t v\u00e0 co ng\u00f3t. Vi\u1ec7c thi\u1ebft k\u1ebf l\u1ea1i \u0111\u1ec3 c\u00f3 \u0111\u1ed9 d\u00e0y \u0111\u1ed3ng \u0111\u1ec1u, c\u00e1c chi ti\u1ebft bo tr\u00f2n v\u00e0 h\u1ec7 th\u1ed1ng d\u1eabn li\u1ec7u t\u1ed1t h\u01a1n \u0111\u00e3 gi\u1ea3m t\u1ef7 l\u1ec7 l\u1ed7i xu\u1ed1ng d\u01b0\u1edbi 5%. M\u1ed9t tr\u01b0\u1eddng h\u1ee3p kh\u00e1c li\u00ean quan \u0111\u1ebfn c\u00e1c chi ti\u1ebft nh\u00f4m ph\u1ee9c t\u1ea1p v\u1edbi s\u1ef1 kh\u00f4ng \u1ed5n \u0111\u1ecbnh v\u1ec1 h\u00ecnh d\u1ea1ng. Vi\u1ec7c chuy\u1ec3n sang s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u x\u1ed1p ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 chu\u1ea9n b\u1ecb khu\u00f4n t\u1ed1t h\u01a1n \u0111\u00e3 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t v\u1ee1. \u0110i\u1ec1u n\u00e0y c\u0169ng c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t. Nh\u1eefng v\u00ed d\u1ee5 n\u00e0y cho th\u1ea5y r\u1eb1ng vi\u1ec7c k\u1ebft h\u1ee3p c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba mang l\u1ea1i nh\u1eefng l\u1ee3i \u00edch r\u00f5 r\u1ec7t v\u1ec1 \u0111\u1ed9 tin c\u1eady c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac khu\u00f4n x\u1ed1p.<\/p>\n

Ph\u1ea7n k\u1ebft lu\u1eadn<\/strong><\/h2>\n

Vi\u1ec7c ng\u0103n ng\u1eeba n\u1ee9t v\u1ee1 trong c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac khu\u00f4n x\u1ed1p c\u1ea7n t\u1eadp trung v\u00e0o thi\u1ebft k\u1ebf, v\u1eadt li\u1ec7u, ki\u1ec3m so\u00e1t quy tr\u00ecnh v\u00e0 x\u1eed l\u00fd sau \u0111\u00fac. B\u1eb1ng c\u00e1ch t\u00ecm hi\u1ec3u nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 v\u00e0 \u00e1p d\u1ee5ng c\u00e1c b\u01b0\u1edbc \u0111\u00e3 n\u00eau, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t s\u1ebd \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ea3n l\u01b0\u1ee3ng cao \u1ed5n \u0111\u1ecbnh v\u1edbi \u00edt ph\u1ebf ph\u1ea9m v\u00e0 c\u00f4ng \u0111o\u1ea1n l\u00e0m l\u1ea1i h\u01a1n. Thi\u1ebft b\u1ecb \u0111\u00fac khu\u00f4n x\u1ed1p ti\u00ean ti\u1ebfn nh\u01b0 m\u00e1y t\u1ea1o b\u1ecdt s\u01a1 b\u1ed9, m\u00e1y t\u1ea1o khu\u00f4n x\u1ed1p, m\u00e1y s\u1ea5y kh\u00ed, h\u1ec7 th\u1ed1ng h\u00fat ch\u00e2n kh\u00f4ng trung t\u00e2m, m\u00e1y tr\u1ed9n s\u01a1n ki\u1ec3u n\u00e2ng v\u00e0 silo \u1ee7 h\u1ed7 tr\u1ee3 s\u1ea3n xu\u1ea5t khu\u00f4n m\u1eabu ch\u00ednh x\u00e1c v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh quy tr\u00ecnh c\u1ea7n thi\u1ebft cho c\u00e1c chi\u1ebfn l\u01b0\u1ee3c n\u00e0y.<\/p>\n

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

Nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y n\u1ee9t v\u1ee1 \u1edf c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac khu\u00f4n x\u1ed1p l\u00e0 g\u00ec? <\/strong><\/h3>\n

Hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t v\u1ee1 ch\u1ee7 y\u1ebfu l\u00e0 do \u1ee9ng su\u1ea5t nhi\u1ec7t trong qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i, co ng\u00f3t trong qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c, h\u1ec7 th\u1ed1ng d\u1eabn li\u1ec7u v\u00e0 t\u1ea1o r\u00e3nh kh\u00f4ng \u0111\u00fang c\u00e1ch, v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng khu\u00f4n m\u1eabu k\u00e9m d\u1eabn \u0111\u1ebfn d\u00f2ng ch\u1ea3y kim lo\u1ea1i kh\u00f4ng \u0111\u1ec1u v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng kh\u00ed b\u1ecb k\u1eb9t.<\/p>\n

\u0110\u1ed9 d\u00e0y th\u00e0nh \u0111\u1ed3ng nh\u1ea5t gi\u00fap ng\u0103n ng\u1eeba n\u1ee9t v\u1ee1 nh\u01b0 th\u1ebf n\u00e0o? <\/strong><\/h3>\n

\u0110\u1ed9 d\u00e0y th\u00e0nh \u0111\u1ed3ng nh\u1ea5t lo\u1ea1i b\u1ecf nh\u1eefng thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t v\u1ec1 ti\u1ebft di\u1ec7n, v\u1ed1n t\u1ea1o ra c\u00e1c \u0111i\u1ec3m n\u00f3ng v\u00e0 t\u1ed1c \u0111\u1ed9 l\u00e0m ngu\u1ed9i kh\u00e1c bi\u1ec7t. Nh\u1edd \u0111\u00f3, n\u00f3 ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t nhi\u1ec7t \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c theo h\u01b0\u1edbng x\u00e1c \u0111\u1ecbnh.<\/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 x\u01b0\u1edfng \u0111\u00fac v\u00e0 c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t \u0111ang t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady cho c\u00e1c th\u00e1ch th\u1ee9c trong qu\u00e1 tr\u00ecnh \u0111\u00fac khu\u00f4n x\u1ed1p n\u00ean li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i. C\u00f4ng ngh\u1ec7 OC<\/strong><\/a>OC Technology l\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t, nh\u00e0 cung c\u1ea5p v\u00e0 nh\u00e0 m\u00e1y chuy\u00ean v\u1ec1 thi\u1ebft b\u1ecb \u0111\u00fac khu\u00f4n x\u1ed1p th\u00f4ng minh cao c\u1ea5p. L\u00e0 chuy\u00ean gia trong l\u0129nh v\u1ef1c t\u1ef1 \u0111\u1ed9ng h\u00f3a khu v\u1ef1c tr\u1eafng v\u00e0 d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t EPC tr\u1ecdn g\u00f3i, OC Technology cung c\u1ea5p m\u00e1y m\u00f3c ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 ch\u00ednh x\u00e1c, hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1ea3m thi\u1ec3u l\u1ed7i. Li\u00ean h\u1ec7 v\u1edbi nh\u00f3m h\u00f4m nay<\/strong><\/a> \u0110\u1ec3 th\u1ea3o lu\u1eadn v\u1ec1 c\u1ea5u h\u00ecnh thi\u1ebft b\u1ecb t\u00f9y ch\u1ec9nh, kh\u00e1m ph\u00e1 vi\u1ec7c t\u00edch h\u1ee3p d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ho\u00e0n ch\u1ec9nh v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t \u0111\u00fac th\u00f4ng qua t\u01b0 v\u1ea5n v\u00e0 h\u1ed7 tr\u1ee3 chuy\u00ean nghi\u1ec7p.<\/p>","protected":false},"excerpt":{"rendered":"

Lost foam casting, also known as evaporative pattern casting, makes complex metal parts with good dimensional accuracy and surface finish. It cuts down on machining needs. Foundries like this process for its low cost and design flexibility in the automotive, aerospace, and heavy machinery sectors. Yet cracking stays a common defect. It hurts part strength, […]<\/p>\n","protected":false},"author":3,"featured_media":4974,"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-4970","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\/4970","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=4970"}],"version-history":[{"count":3,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4970\/revisions"}],"predecessor-version":[{"id":4981,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4970\/revisions\/4981"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media\/4974"}],"wp:attachment":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media?parent=4970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/categories?post=4970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/tags?post=4970"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}