{"id":259,"date":"2024-01-03T00:37:13","date_gmt":"2024-01-03T00:37:13","guid":{"rendered":"http:\/\/juyuans.com\/?p=259"},"modified":"2024-01-03T00:37:13","modified_gmt":"2024-01-03T00:37:13","slug":"mot-so-khuyen-nghi-xu-ly-cho-nhua-abs","status":"publish","type":"post","link":"https:\/\/juyuans.com\/vi\/mot-so-khuyen-nghi-xu-ly-cho-nhua-abs\/","title":{"rendered":"M\u1ed9t s\u1ed1 khuy\u1ebfn ngh\u1ecb x\u1eed l\u00fd cho nh\u1ef1a ABS"},"content":{"rendered":"

Qu\u00e1 tr\u00ecnh \u0111\u00fac<\/strong><\/span><\/p>\n

Nh\u1ef1a ABS c\u0169ng c\u00f3 th\u1ec3 coi l\u00e0 bi\u1ebfn th\u1ec3 c\u1ee7a polystyrene, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp cao h\u01a1n v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc t\u1ed1t h\u01a1n so v\u1edbi HIPS. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd t\u1ed1t v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00fac b\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb t\u1ea1o h\u00ecnh nh\u1ef1a nh\u01b0 m\u00e1y \u00e9p phun, m\u00e1y \u0111\u00f9n, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb t\u01b0\u01a1ng t\u1ef1 \u0111\u1ec3 \u00e9p phun, \u00e9p \u0111\u00f9n, \u0111\u00fac th\u1ed5i, c\u00e1n, c\u00e1n m\u00e0ng, t\u1ea1o b\u1ecdt v\u00e0 t\u1ea1o h\u00ecnh nhi\u1ec7t. Ngo\u00e0i ra, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u00e0n, tr\u00e1ng, m\u1ea1 \u0111i\u1ec7n v\u00e0 gia c\u00f4ng. ABS c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc t\u01b0\u01a1ng \u0111\u1ed1i cao v\u00e0 c\u1ea7n s\u1ea5y kh\u00f4 tr\u01b0\u1edbc khi x\u1eed l\u00fd. Nhi\u1ec7t \u0111\u1ed9 s\u1ea5y ph\u1ea3i n\u1eb1m trong kho\u1ea3ng 70-85\u00b0C, th\u1eddi gian s\u1ea5y l\u00e0 2-6 gi\u1edd. C\u00e1c s\u1ea3n ph\u1ea9m ABS d\u1ec5 b\u1ecb \u1ee9ng su\u1ea5t b\u00ean trong trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn n\u1ee9t n\u1ebfu \u1ee9ng su\u1ea5t qu\u00e1 l\u1edbn. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u \u0111i\u1ec1u n\u00e0y, n\u00ean \u1ee7 b\u1eb1ng c\u00e1ch \u0111\u1eb7t c\u00e1c b\u1ed9 ph\u1eadn v\u00e0o l\u00f2 tu\u1ea7n ho\u00e0n kh\u00f4ng kh\u00ed n\u00f3ng \u1edf 70-80\u00b0C trong 2-4 gi\u1edd, sau \u0111\u00f3 l\u00e0m ngu\u1ed9i \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.<\/span><\/p>\n

Qu\u00e1 tr\u00ecnh \u0111\u00f9n<\/strong><\/span><\/p>\n

Phun ra. Nh\u1ef1a ABS \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t \u1ed1ng, t\u1ea5m, m\u00e0ng v\u00e0 h\u1ed3 s\u01a1. C\u00e1c \u0111\u01b0\u1eddng \u1ed1ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc, \u1ed1ng d\u1eabn kh\u00ed, \u0111\u01b0\u1eddng \u1ed1ng v\u1eadn chuy\u1ec3n d\u1ea7u b\u00f4i tr\u01a1n v\u00e0 d\u1ea7u nhi\u00ean li\u1ec7u kh\u00e1c nhau; t\u1ea5m v\u00e0 m\u00e0ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m s\u00e0n, \u0111\u1ed3 n\u1ed9i th\u1ea5t, b\u1ec3 ch\u1ee9a, b\u1ed9 l\u1ecdc, v\u00e1ch ng\u0103n v\u00e0 \u0111\u1ec3 t\u1ea1o h\u00ecnh nhi\u1ec7t ho\u1eb7c t\u1ea1o h\u00ecnh ch\u00e2n kh\u00f4ng. T\u1ef7 l\u1ec7 chi\u1ec1u d\u00e0i tr\u00ean \u0111\u01b0\u1eddng k\u00ednh tr\u1ee5c v\u00edt (L\/D) c\u1ee7a m\u00e1y \u0111\u00f9n th\u01b0\u1eddng t\u01b0\u01a1ng \u0111\u1ed1i cao, t\u1eeb 18 \u0111\u1ebfn 22, v\u1edbi t\u1ef7 l\u1ec7 n\u00e9n l\u00e0 (2,5 \u0111\u1ebfn 3,0):1. N\u00f3 ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1eed d\u1ee5ng v\u00edt thu\u00f4n d\u1ea7n v\u1edbi \u0111\u1ea7u ng\u01b0 l\u00f4i. Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a th\u00f9ng nh\u01b0 sau: ph\u1ea7n ph\u1ec5u \u1edf 150 \u0111\u1ebfn 160\u00b0C, ph\u1ea7n tr\u01b0\u1edbc c\u1ee7a th\u00f9ng \u1edf 180 \u0111\u1ebfn 190\u00b0C, nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea7u khu\u00f4n \u1edf 185 \u0111\u1ebfn 195\u00b0C, v\u00e0 nhi\u1ec7t \u0111\u1ed9 khu\u00f4n \u1edf 180 \u0111\u1ebfn 200\u00b0C. Sau \u0111\u00f3, nhi\u1ec7t \u0111\u1ed9 \u0111\u00fac th\u1ed5i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong kho\u1ea3ng t\u1eeb 140 \u0111\u1ebfn 180\u00b0C.<\/span><\/p>\n

Qu\u00e1 tr\u00ecnh \u00e9p phun<\/strong><\/span><\/p>\n

Nh\u1ef1a ABS l\u00e0 m\u1ed9t terpolymer \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n tr\u00ean c\u01a1 s\u1edf nh\u1ef1a polystyrene bi\u1ebfn t\u00ednh. Trong ABS, A l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a acrylonitrile, B t\u01b0\u1ee3ng tr\u01b0ng cho butadiene v\u00e0 S t\u01b0\u1ee3ng tr\u01b0ng cho styrene. Nh\u1ef1a ABS th\u1ec3 hi\u1ec7n c\u00e1c \u0111\u1eb7c t\u00ednh k\u1ebft h\u1ee3p c\u1ee7a ba th\u00e0nh ph\u1ea7n: A t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n d\u1ea7u v\u00e0 h\u00f3a ch\u1ea5t, do \u0111\u00f3 mang l\u1ea1i \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t nh\u1ea5t \u0111\u1ecbnh; B mang l\u1ea1i \u0111\u1ed9 d\u1ebbo dai \u1edf tr\u1ea1ng th\u00e1i cao su cho ABS, c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp c\u1ee7a n\u00f3; S mang l\u1ea1i cho nh\u1ef1a ABS t\u00ednh l\u01b0u \u0111\u1ed9ng t\u1ed1t, cho ph\u00e9p n\u00f3 c\u00f3 hi\u1ec7u su\u1ea5t tuy\u1ec7t v\u1eddi trong qu\u00e1 tr\u00ecnh \u0111\u00fac nh\u1ef1a nhi\u1ec7t d\u1ebbo.<\/span>
\n\u1ede Trung Qu\u1ed1c, nh\u1ef1a ABS ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t v\u1ecf d\u1ee5ng c\u1ee5, thi\u1ebft b\u1ecb gia d\u1ee5ng, \u0111i\u1ec7n tho\u1ea1i, tivi v\u00e0 nh\u1ef1a ABS m\u1ea1 \u0111i\u1ec7n \u0111\u01b0\u1ee3c t\u1ea1o \u00e1nh kim lo\u1ea1i, cho ph\u00e9p s\u1eed d\u1ee5ng ABS thay th\u1ebf cho kim lo\u1ea1i. L\u1edbp l\u00f3t b\u00ean trong c\u1ee7a c\u00e1c m\u1eabu t\u1ee7 l\u1ea1nh kh\u00e1c nhau do nh\u00e0 m\u00e1y c\u1ee7a ch\u00fang t\u00f4i s\u1ea3n xu\u1ea5t, c\u0169ng nh\u01b0 nhi\u1ec1u lo\u1ea1i s\u1ea3n ph\u1ea9m nh\u1ef1a kh\u00e1c, \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng s\u1ea3n ph\u1ea9m \u0111\u00fac phun ABS, chi\u1ebfm h\u01a1n 88% trong t\u1ed5ng s\u1ed1 s\u1ea3n ph\u1ea9m nh\u1ef1a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u1ee7 l\u1ea1nh.<\/span><\/p>\n

Ngh\u1ec1 th\u1ee7 c\u00f4ng<\/strong><\/span><\/p>\n

ABS thu\u1ed9c lo\u1ea1i polyme v\u00f4 \u0111\u1ecbnh h\u00ecnh v\u00e0 kh\u00f4ng c\u00f3 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y r\u00f5 r\u1ec7t. Do c\u00f3 nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau n\u00ean c\u00e1c th\u00f4ng s\u1ed1 x\u1eed l\u00fd th\u00edch h\u1ee3p ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp theo c\u00e1c lo\u1ea1i kh\u00e1c nhau trong qu\u00e1 tr\u00ecnh \u00e9p phun. N\u00f3i chung, vi\u1ec7c \u0111\u00fac khu\u00f4n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf nhi\u1ec7t \u0111\u1ed9 tr\u00ean 160\u00b0C v\u00e0 d\u01b0\u1edbi 240\u00b0C. \u0110i\u1ec1u n\u00e0y l\u00e0 do \u1edf nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao, c\u00f3 xu h\u01b0\u1edbng l\u00e0m h\u1ecfng pha cao su trong ABS v\u00e0 s\u1ef1 ph\u00e2n h\u1ee7y b\u1eaft \u0111\u1ea7u x\u1ea3y ra \u1edf nhi\u1ec7t \u0111\u1ed9 tr\u00ean 250\u00b0C. Trong qu\u00e1 tr\u00ecnh \u0111\u00fac, ABS th\u1ec3 hi\u1ec7n t\u00ednh \u1ed5n \u0111\u1ecbnh nhi\u1ec7t t\u1ed1t, mang l\u1ea1i kho\u1ea3ng th\u1eddi gian x\u1eed l\u00fd r\u1ed9ng v\u00e0 \u00edt b\u1ecb xu\u1ed1ng c\u1ea5p ho\u1eb7c ph\u00e2n h\u1ee7y. H\u01a1n n\u1eefa, ABS c\u00f3 \u0111\u1ed9 nh\u1edbt n\u00f3ng ch\u1ea3y v\u1eeba ph\u1ea3i v\u00e0 kh\u1ea3 n\u0103ng ch\u1ea3y c\u1ee7a n\u00f3 t\u1ed1t h\u01a1n so v\u1edbi c\u00e1c polyme nh\u01b0 polyvinyl clorua (PVC) v\u00e0 polycarbonate (PC). Ngo\u00e0i ra, ch\u1ea5t tan ch\u1ea3y ngu\u1ed9i \u0111i v\u00e0 \u0111\u00f4ng \u0111\u1eb7c kh\u00e1 nhanh, th\u01b0\u1eddng trong v\u00f2ng 5 \u0111\u1ebfn 15 gi\u00e2y.<\/span><\/p>\n

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Kh\u1ea3 n\u0103ng ch\u1ea3y c\u1ee7a ABS li\u00ean quan \u0111\u1ebfn c\u1ea3 nhi\u1ec7t \u0111\u1ed9 phun v\u00e0 \u00e1p su\u1ea5t phun, trong \u0111\u00f3 \u00e1p su\u1ea5t phun nh\u1ea1y h\u01a1n m\u1ed9t ch\u00fat. Do \u0111\u00f3, trong qu\u00e1 tr\u00ecnh \u0111\u00fac, vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh \u00e1p su\u1ea5t phun c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m \u0111\u1ed9 nh\u1edbt n\u00f3ng ch\u1ea3y v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t l\u00e0m \u0111\u1ea7y khu\u00f4n. Do s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 th\u00e0nh ph\u1ea7n th\u00e0nh ph\u1ea7n, ABS th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc v\u00e0 \u0111\u1ed9 b\u00e1m d\u00ednh kh\u00e1c nhau. T\u1ed1c \u0111\u1ed9 b\u00e1m d\u00ednh v\u00e0 h\u1ea5p th\u1ee5 n\u01b0\u1edbc b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 dao \u0111\u1ed9ng trong kho\u1ea3ng t\u1eeb 0,2 \u0111\u1ebfn 0,5% v\u00e0 \u0111\u00f4i khi c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1eeb 0,3 \u0111\u1ebfn 0,8%. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ea3n ph\u1ea9m l\u00fd t\u01b0\u1edfng h\u01a1n, n\u00ean ti\u1ebfn h\u00e0nh x\u1eed l\u00fd s\u1ea5y tr\u01b0\u1edbc khi \u0111\u00fac \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 \u1ea9m xu\u1ed1ng d\u01b0\u1edbi 0,1%. N\u1ebfu kh\u00f4ng, c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 bong b\u00f3ng v\u00e0 v\u1ec7t b\u1ea1c c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn \u0111\u00fac.<\/span><\/p>\n

Thi\u1ebft b\u1ecb \u00e9p phun<\/strong><\/span><\/p>\n

S\u1eed d\u1ee5ng m\u00e1y \u00e9p phun ki\u1ec3u tr\u1ee5c v\u00edt cho ph\u00e9p nh\u1ef1a \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng b\u1eb1ng c\u00e1c v\u00f2ng gia nhi\u1ec7t \u0111i\u1ec7n v\u00e0 nhi\u1ec7t ma s\u00e1t sinh ra do chuy\u1ec3n \u0111\u1ed9ng quay c\u1ee7a tr\u1ee5c v\u00edt trong th\u00f9ng, l\u00e0m d\u1ebbo tr\u01b0\u1edbc v\u00e0 n\u1ea5u ch\u1ea3y v\u1eadt li\u1ec7u tr\u01b0\u1edbc khi b\u01a1m v\u00e0o khoang khu\u00f4n. Sau khi ngu\u1ed9i, khu\u00f4n m\u1edf ra v\u00e0 s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111\u1ea9y ra ngo\u00e0i. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 d\u1ebbo t\u1ed1t v\u00e0 nhi\u1ec7t \u0111\u1ed9 \u0111\u00fac c\u00f3 th\u1ec3 th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi c\u00e1c lo\u1ea1i thi\u1ebft b\u1ecb kh\u00e1c (ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00e1y lo\u1ea1i p\u00edt t\u00f4ng), do \u0111\u00f3 tr\u00e1nh \u0111\u01b0\u1ee3c nh\u1eefng h\u01b0 h\u1ecfng m\u00e0 nhi\u1ec7t \u0111\u1ed9 cao c\u00f3 th\u1ec3 g\u00e2y ra cho pha cao su. \u0110i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd nh\u1eefng \u0111i\u1ec1u sau:<\/span><\/p>\n

1) M\u1ed7i l\u01b0\u1ee3ng phun ph\u1ea3i b\u1eb1ng 50-75% c\u00f4ng su\u1ea5t phun t\u1ed1i \u0111a c\u1ee7a m\u00e1y.<\/span><\/p>\n

2) V\u00edt ph\u1ea3i l\u00e0 m\u1ed9t \u0111\u1ea7u, c\u00f3 b\u01b0\u1edbc b\u1eb1ng nhau, h\u00ecnh d\u1ea1ng d\u1ea7n d\u1ea7n, ren \u0111\u1ea7y \u0111\u1ee7 v\u00e0 \u0111\u01b0\u1ee3c trang b\u1ecb v\u00f2ng m\u1ed9t chi\u1ec1u. T\u1ef7 l\u1ec7 chi\u1ec1u d\u00e0i tr\u00ean \u0111\u01b0\u1eddng k\u00ednh (L\/D) c\u1ee7a v\u00edt ph\u1ea3i l\u00e0 20:1, v\u1edbi t\u1ef7 l\u1ec7 n\u00e9n l\u00e0 2:1 ho\u1eb7c 2,5:1.<\/span><\/p>\n

3) V\u00f2i phun c\u00f3 th\u1ec3 l\u00e0 lo\u1ea1i m\u1edf \u0111a n\u0103ng ho\u1eb7c v\u00f2i phun m\u1edf r\u1ed9ng (v\u1edbi ph\u1ea7n m\u1edf r\u1ed9ng kh\u00f4ng qu\u00e1 150mm) \u0111\u1ec3 tr\u00e1nh s\u1eed d\u1ee5ng v\u00f2i phun t\u1ef1 kh\u00f3a, c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh phun ho\u1eb7c g\u00e2y ra s\u1ef1 \u0111\u1ed5i m\u00e0u c\u1ee7a v\u1eadt li\u1ec7u. Ngo\u00e0i ra, n\u00ean l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 s\u01b0\u1edfi \u1ea5m tr\u00ean v\u00f2i phun.<\/span><\/p>\n

Thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m v\u00e0 khu\u00f4n m\u1eabu<\/strong><\/span><\/p>\n

\u0110\u1ed9 d\u00e0y th\u00e0nh c\u1ee7a s\u1ea3n ph\u1ea9m: \u0110\u1ed9 d\u00e0y th\u00e0nh c\u1ee7a s\u1ea3n ph\u1ea9m li\u00ean quan \u0111\u1ebfn chi\u1ec1u d\u00e0i d\u00f2ng ch\u1ea3y, hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t, y\u00eau c\u1ea7u s\u1eed d\u1ee5ng v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c. Chi\u1ec1u d\u00e0i d\u00f2ng ch\u1ea3y t\u1ed1i \u0111a c\u1ee7a t\u1ef7 l\u1ec7 tan ch\u1ea3y v\u00e0 \u0111\u1ed9 d\u00e0y th\u00e0nh \u1ed1ng ABS l\u00e0 kho\u1ea3ng 190:1. Gi\u00e1 tr\u1ecb n\u00e0y c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i v\u1eadt li\u1ec7u. V\u00ec v\u1eady, \u0111\u1ed9 d\u00e0y th\u00e0nh c\u1ee7a s\u1ea3n ph\u1ea9m ABS kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 m\u1ecfng. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u1ea7n m\u1ea1 \u0111i\u1ec7n, \u0111\u1ed9 d\u00e0y th\u00e0nh n\u00ean d\u00e0y h\u01a1n m\u1ed9t ch\u00fat \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u00e1m d\u00ednh gi\u1eefa l\u1edbp m\u1ea1 v\u00e0 b\u1ec1 m\u1eb7t s\u1ea3n ph\u1ea9m. Do \u0111\u00f3, n\u00ean ch\u1ecdn \u0111\u1ed9 d\u00e0y th\u00e0nh t\u1eeb 1,5 \u0111\u1ebfn 4,5mm.<\/span><\/p>\n

Khi xem x\u00e9t \u0111\u1ed9 d\u00e0y th\u00e0nh c\u1ee7a s\u1ea3n ph\u1ea9m, c\u0169ng c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a \u0111\u1ed9 d\u00e0y th\u00e0nh; n\u00f3 kh\u00f4ng n\u00ean thay \u0111\u1ed5i qu\u00e1 nhi\u1ec1u. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u1ea7n m\u1ea1 \u0111i\u1ec7n, b\u1ec1 m\u1eb7t c\u1ee7a ch\u00fang ph\u1ea3i ph\u1eb3ng v\u00e0 kh\u00f4ng b\u1ecb va \u0111\u1eadp v\u00ec nh\u1eefng khu v\u1ef1c n\u00e0y d\u1ec5 b\u1ecb b\u00e1m b\u1ee5i do t\u0129nh \u0111i\u1ec7n, kh\u00f3 lo\u1ea1i b\u1ecf v\u00e0 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ed9 b\u00e1m d\u00ednh k\u00e9m c\u1ee7a l\u1edbp m\u1ea1. Ngo\u00e0i ra, n\u00ean tr\u00e1nh c\u00e1c g\u00f3c nh\u1ecdn \u0111\u1ec3 tr\u00e1nh t\u1eadp trung \u1ee9ng su\u1ea5t. Do \u0111\u00f3, n\u00ean s\u1eed d\u1ee5ng c\u00e1c cung tr\u00f2n \u0111\u1ec3 chuy\u1ec3n ti\u1ebfp \u1edf c\u00e1c g\u00f3c, \u0111i\u1ec3m n\u1ed1i c\u00f3 \u0111\u1ed9 d\u00e0y kh\u00e1c nhau v\u00e0 c\u00e1c khu v\u1ef1c t\u01b0\u01a1ng t\u1ef1 kh\u00e1c. <\/span>
\n2. G\u00f3c nh\u00e1p \u0111\u1ec3 th\u00e1o khu\u00f4n: G\u00f3c nh\u00e1p \u0111\u1ec3 th\u00e1o khu\u00f4n c\u1ee7a s\u1ea3n ph\u1ea9m c\u00f3 li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 co ng\u00f3t c\u1ee7a n\u00f3. Do c\u00e1c lo\u1ea1i kh\u00e1c nhau, h\u00ecnh d\u1ea1ng s\u1ea3n ph\u1ea9m kh\u00e1c nhau v\u00e0 \u0111i\u1ec1u ki\u1ec7n \u0111\u00fac, t\u1ed1c \u0111\u1ed9 co ng\u00f3t c\u1ee7a khu\u00f4n c\u00f3 th\u1ec3 kh\u00e1c nhau, th\u01b0\u1eddng dao \u0111\u1ed9ng t\u1eeb 0,3% \u0111\u1ebfn 0,6% v\u00e0 \u0111\u00f4i khi \u0111\u1ea1t 0,4% \u0111\u1ebfn 0,8%. V\u00ec v\u1eady, \u0111\u1ed9 ch\u00ednh x\u00e1c k\u00edch th\u01b0\u1edbc c\u1ee7a s\u1ea3n ph\u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i cao. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m ABS, g\u00f3c nghi\u00eang ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t nh\u01b0 sau: \u0111\u1ed1i v\u1edbi ph\u1ea7n l\u00f5i, g\u00f3c n\u00e0y ph\u1ea3i l\u00e0 31\u00b0 d\u1ecdc theo h\u01b0\u1edbng th\u00e1o khu\u00f4n v\u00e0 \u0111\u1ed1i v\u1edbi ph\u1ea7n khoang, g\u00f3c nghi\u00eang ph\u1ea3i l\u00e0 4\u00b0 \u0111\u1ebfn 1\u00b020' d\u1ecdc theo h\u01b0\u1edbng th\u00e1o khu\u00f4n. \u0110\u1ed1i v\u1edbi nh\u1eefng s\u1ea3n ph\u1ea9m c\u00f3 h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p ho\u1eb7c nh\u1eefng s\u1ea3n ph\u1ea9m c\u00f3 ch\u1eef c\u00e1i, hoa v\u0103n th\u00ec g\u00f3c nghi\u00eang c\u1ea7n \u0111\u01b0\u1ee3c t\u0103ng l\u00ean m\u1ed9t c\u00e1ch th\u00edch h\u1ee3p.<\/span>
\n3. Y\u00eau c\u1ea7u ph\u00f3ng ra: V\u00ec \u0111\u1ed9 m\u1ecbn b\u1ec1 ngo\u00e0i c\u1ee7a s\u1ea3n ph\u1ea9m \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn hi\u1ec7u su\u1ea5t m\u1ea1 n\u00ean m\u1ecdi v\u1ebft x\u01b0\u1edbc nh\u1ecf tr\u00ean b\u1ec1 m\u1eb7t s\u1ebd tr\u1edf n\u00ean r\u00f5 r\u00e0ng sau khi m\u1ea1. V\u00ec v\u1eady, ngo\u00e0i y\u00eau c\u1ea7u khoang khu\u00f4n kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f3 v\u1ebft x\u01b0\u1edbc th\u00ec c\u0169ng c\u1ea7n ph\u1ea3i c\u00f3 di\u1ec7n t\u00edch phun hi\u1ec7u qu\u1ea3 l\u1edbn. S\u1ef1 \u0111\u1ed3ng b\u1ed9 h\u00f3a c\u1ee7a nhi\u1ec1u ch\u00e2n \u0111\u1ea9y trong qu\u00e1 tr\u00ecnh ph\u00f3ng ph\u1ea3i t\u1ed1t v\u00e0 l\u1ef1c ph\u00f3ng ph\u1ea3i \u0111\u1ed3ng \u0111\u1ec1u.<\/span><\/p>\n

4. Th\u00f4ng h\u01a1i: \u0110\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 th\u00f4ng h\u01a1i k\u00e9m trong qu\u00e1 tr\u00ecnh \u0111\u00fac c\u00f3 th\u1ec3 khi\u1ebfn v\u1eadt li\u1ec7u n\u00f3ng ch\u1ea3y b\u1ecb ch\u00e1y, c\u00e1c \u0111\u01b0\u1eddng may n\u1ed5i r\u00f5 c\u1ea7n t\u1ea1o c\u00e1c l\u1ed7 ho\u1eb7c khe th\u00f4ng h\u01a1i c\u00f3 \u0111\u1ed9 s\u00e2u kh\u00f4ng qu\u00e1 0,04mm \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho kh\u00ed th\u1ea3i tho\u00e1t ra ngo\u00e0i. kh\u00ed sinh ra b\u1edfi v\u1eadt li\u1ec7u n\u00f3ng ch\u1ea3y.<\/span><\/p>\n

5. \u0110\u01b0\u1eddng ch\u1ea1y v\u00e0 C\u1ed5ng: \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o nh\u1ef1a ABS tan ch\u1ea3y c\u00f3 th\u1ec3 nhanh ch\u00f3ng l\u1ea5p \u0111\u1ea7y t\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a khoang khu\u00f4n, \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a \u0111\u01b0\u1eddng ch\u1ea1y ph\u1ea3i kh\u00f4ng nh\u1ecf h\u01a1n 5 mm v\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a c\u1ed5ng ph\u1ea3i \u00edt nh\u1ea5t b\u1eb1ng 30% \u0111\u1ed9 d\u00e0y c\u1ee7a s\u1ea3n ph\u1ea9m. Ph\u1ea7n th\u1eb3ng (ph\u1ea7n s\u1ebd \u0111i v\u00e0o l\u00f2ng khu\u00f4n) ph\u1ea3i c\u00f3 chi\u1ec1u d\u00e0i kho\u1ea3ng 1mm. V\u1ecb tr\u00ed c\u1ee7a c\u00e1c c\u1ed5ng ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh d\u1ef1a tr\u00ean y\u00eau c\u1ea7u c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 h\u01b0\u1edbng c\u1ee7a d\u00f2ng nguy\u00ean li\u1ec7u. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u1ea7n x\u1eed l\u00fd m\u1ea1 \u0111i\u1ec7n, c\u00e1c c\u1ed5ng th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p \u0111\u1eb7t tr\u00ean b\u1ec1 m\u1eb7t n\u01a1i l\u1edbp m\u1ea1 s\u1ebd b\u00e1m v\u00e0o.<\/span><\/p>\n

Chu\u1ea9n b\u1ecb nguy\u00ean li\u1ec7u<\/strong><\/span><\/p>\n

Nh\u1ef1a ABS \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u00e9p phun, ngo\u1ea1i tr\u1eeb c\u00e1c lo\u1ea1i \u0111\u1eb7c bi\u1ec7t ho\u1eb7c nh\u1eefng lo\u1ea1i \u0111\u00e3 \u0111\u01b0\u1ee3c nhu\u1ed9m m\u00e0u, h\u1ea7u h\u1ebft \u1edf d\u1ea1ng h\u1ea1t m\u1edd \u0111\u1ee5c m\u00e0u tr\u1eafng ng\u00e0 ho\u1eb7c s\u1ee9. Nh\u1ef1a kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc r\u1ea5t cao; n\u1ebfu n\u00f3 th\u1ea5p h\u01a1n gi\u00e1 tr\u1ecb x\u1eed l\u00fd cho ph\u00e9p t\u1eeb 0,1 \u0111\u1ebfn 0,2% v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p li\u00ean quan \u0111\u1ebfn v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i ch\u1eb7t ch\u1ebd, \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n \u0111\u00fang c\u00e1ch v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 s\u1ea3n ph\u1ea9m kh\u00f4ng qu\u00e1 kh\u1eaft khe th\u00ec c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh \u0111\u00fac m\u00e0 kh\u00f4ng c\u1ea7n s\u1ea5y kh\u00f4. Tuy nhi\u00ean, n\u1ebfu \u0111\u1ed9 \u1ea9m trong h\u1ea1t v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb quy \u0111\u1ecbnh th\u00ec ch\u00fang ph\u1ea3i \u0111\u01b0\u1ee3c s\u1ea5y kh\u00f4 tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh \u0111\u00fac. \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i h\u1ea1t \u0111\u1eb7c bi\u1ec7t ho\u1eb7c c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 y\u00eau c\u1ea7u cao h\u01a1n (ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ea1 \u0111i\u1ec7n), vi\u1ec7c s\u1ea5y kh\u00f4 c\u0169ng ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u01b0\u1edbc qu\u00e1 tr\u00ecnh \u0111\u00fac.<\/span><\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt qu\u00e1 tr\u00ecnh \u0111\u00fac<\/strong><\/span><\/p>\n

Nhi\u1ec7t \u0111\u1ed9 phun: \u0110i\u1ec1u n\u00e0y bao g\u1ed3m nhi\u1ec7t \u0111\u1ed9 th\u00f9ng (c\u00f3 th\u1ec3 chia th\u00e0nh c\u00e1c ph\u1ea7n ph\u00eda sau, gi\u1eefa v\u00e0 ph\u00eda tr\u01b0\u1edbc), nhi\u1ec7t \u0111\u1ed9 v\u00f2i phun v\u00e0 nhi\u1ec7t \u0111\u1ed9 khu\u00f4n. M\u1eb7c d\u00f9 \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn \u0111\u1ed9 nh\u1edbt n\u00f3ng ch\u1ea3y c\u1ee7a ABS kh\u00f4ng \u0111\u00e1ng k\u1ec3 b\u1eb1ng \u00e1p su\u1ea5t phun, nh\u01b0ng nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n s\u1ebd c\u00f3 l\u1ee3i cho vi\u1ec7c \u0111\u00fac c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 th\u00e0nh m\u1ecfng. Nhi\u1ec7t \u0111\u1ed9 ph\u00e2n h\u1ee7y l\u00fd thuy\u1ebft c\u1ee7a ABS c\u00f3 th\u1ec3 \u0111\u1ea1t tr\u00ean 270\u00b0C; tuy nhi\u00ean, trong qu\u00e1 tr\u00ecnh \u00e9p phun th\u1ef1c t\u1ebf, do \u1ea3nh h\u01b0\u1edfng c\u1ee7a th\u1eddi gian v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n x\u1eed l\u00fd kh\u00e1c, nh\u1ef1a th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u m\u1ea5t m\u00e0u \u1edf kho\u1ea3ng 250\u00b0C. Ngo\u00e0i ra, pha cao su c\u00f3 trong ABS kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao v\u00ec \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m. B\u00ean c\u1ea1nh c\u00e1c lo\u1ea1i nh\u1ef1a ABS ch\u1ecbu nhi\u1ec7t v\u00e0 m\u1ea1 \u0111i\u1ec7n, \u0111\u00f2i h\u1ecfi nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n m\u1ed9t ch\u00fat (trong kho\u1ea3ng 210-250\u00b0C) \u0111\u1ec3 gi\u1ea3m b\u1edbt kh\u00f3 kh\u0103n trong qu\u00e1 tr\u00ecnh l\u00e0m n\u00f3ng ch\u1ea3y ho\u1eb7c \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t m\u1ea1 \u0111i\u1ec7n, c\u00e1c lo\u1ea1i kh\u00e1c nh\u01b0 m\u1ee5c \u0111\u00edch chung, ch\u1ea5t ch\u1ed1ng ch\u00e1y v\u00e0 t\u00e1c \u0111\u1ed9ng Nh\u1ef1a ABS ch\u1ecbu nhi\u1ec7t th\u00edch nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 ph\u00e2n h\u1ee7y ho\u1eb7c t\u00e1c \u0111\u1ed9ng b\u1ea5t l\u1ee3i \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 c\u01a1 h\u1ecdc c\u1ee7a ch\u00fang. M\u00e1y phun p\u00edt t\u00f4ng th\u01b0\u1eddng ch\u1ecdn nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi m\u00e1y phun ki\u1ec3u tr\u1ee5c v\u00edt. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m th\u00f4ng th\u01b0\u1eddng, m\u00e1y p\u00edt t\u00f4ng ch\u1ecdn nhi\u1ec7t \u0111\u1ed9 t\u1eeb 180-230\u00b0C, trong khi m\u00e1y \u00e9p phun ki\u1ec3u tr\u1ee5c v\u00edt c\u00f3 th\u1ec3 t\u1ea1o khu\u00f4n \u1edf nhi\u1ec7t \u0111\u1ed9 160-220\u00b0C. Trong qu\u00e1 tr\u00ecnh \u0111\u00fac, nhi\u1ec7t \u0111\u1ed9 th\u00f9ng \u0111i\u1ec3n h\u00ecnh l\u00e0 (ph\u1ea7n sau 150-170\u00b0C, ph\u1ea7n gi\u1eefa 170-180\u00b0C, ph\u1ea7n tr\u01b0\u1edbc 180-210\u00b0C). Nhi\u1ec7t \u0111\u1ed9 v\u00f2i phun th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf 170-180\u00b0C. \u0110i\u1ec1u \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 b\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o trong ph\u1ea7n \u0111\u1ed3ng nh\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 v\u00f2i phun s\u1ebd \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh v\u00e0o s\u1ea3n ph\u1ea9m, g\u00e2y ra c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 \u0111\u00e8n flash, v\u1ec7t b\u1ea1c, \u0111\u1ed5i m\u00e0u, \u0111\u1ed9 b\u00f3ng k\u00e9m v\u00e0 \u0111\u01b0\u1eddng h\u00e0n n\u1ed5i r\u00f5.<\/span>
\n2. Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n: Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t c\u1ee7a s\u1ea3n ph\u1ea9m ABS v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t b\u00ean trong s\u1ea3n ph\u1ea9m. Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n cao h\u01a1n gi\u00fap cho ch\u1ea5t tan ch\u1ea3y \u0111\u1ed5 \u0111\u1ea7y khu\u00f4n d\u1ec5 d\u00e0ng h\u01a1n, mang l\u1ea1i h\u00ecnh th\u1ee9c \u0111\u1eb9p h\u01a1n cho s\u1ea3n ph\u1ea9m, \u00edt \u1ee9ng su\u1ea5t b\u00ean trong h\u01a1n v\u00e0 c\u0169ng c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch m\u1ea1 \u0111i\u1ec7n. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 t\u1ed1c \u0111\u1ed9 co ng\u00f3t c\u1ee7a s\u1ea3n ph\u1ea9m \u0111\u00fac cao h\u01a1n, chu k\u1ef3 \u0111\u00fac d\u00e0i h\u01a1n v\u00e0 xu h\u01b0\u1edbng s\u1ea3n ph\u1ea9m b\u1ecb cong v\u00eanh sau khi \u0111\u00fac. \u0110\u1ed1i v\u1edbi nh\u1eefng s\u1ea3n ph\u1ea9m c\u00f3 y\u00eau c\u1ea7u chung, nhi\u1ec7t \u0111\u1ed9 khu\u00f4n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong kho\u1ea3ng 40-50\u00b0C; \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 y\u00eau c\u1ea7u cao v\u1ec1 h\u00ecnh th\u1ee9c v\u00e0 t\u00ednh n\u0103ng, nhi\u1ec7t \u0111\u1ed9 khu\u00f4n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong kho\u1ea3ng 60-70\u00b0C. Ngo\u00e0i ra, nhi\u1ec7t \u0111\u1ed9 khu\u00f4n ph\u1ea3i \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa khoang khu\u00f4n v\u00e0 l\u00f5i kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 10\u00b0C. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 l\u1ed7 s\u00e2u ho\u1eb7c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p h\u01a1n, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a khoang khu\u00f4n ph\u1ea3i cao h\u01a1n nhi\u1ec7t \u0111\u1ed9 c\u1ee7a l\u00f5i m\u1ed9t ch\u00fat \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho qu\u00e1 tr\u00ecnh \u0111\u00fac di\u1ec5n ra su\u00f4n s\u1ebb.<\/span>
\n3. \u00c1p su\u1ea5t phun: So v\u1edbi c\u00e1c lo\u1ea1i nh\u1ef1a nh\u01b0 polyetylen, polystyrene v\u00e0 nylon, ABS c\u00f3 kh\u1ea3 n\u0103ng ch\u1ea3y k\u00e9m h\u01a1n m\u1ed9t ch\u00fat, do \u0111\u00f3 \u0111\u00f2i h\u1ecfi \u00e1p su\u1ea5t phun cao h\u01a1n. Tuy nhi\u00ean, \u00e1p su\u1ea5t phun qu\u00e1 cao c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn kh\u00f3 kh\u0103n trong qu\u00e1 tr\u00ecnh \u0111\u00fac ho\u1eb7c h\u01b0 h\u1ecfng trong qu\u00e1 tr\u00ecnh \u0111\u00fac v\u00e0 c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra \u1ee9ng su\u1ea5t b\u00ean trong \u0111\u00e1ng k\u1ec3 v\u00e0o s\u1ea3n ph\u1ea9m. \u00c1p su\u1ea5t phun ABS kh\u00f4ng ch\u1ec9 li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 d\u00e0y th\u00e0nh s\u1ea3n ph\u1ea9m v\u00e0 lo\u1ea1i thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u00e0 c\u00f2n li\u00ean quan \u0111\u1ebfn lo\u1ea1i nh\u1ef1a. C\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 th\u00e0nh m\u1ecfng, \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng ch\u1ea3y d\u00e0i v\u00e0 c\u1ed5ng nh\u1ecf \u0111\u00f2i h\u1ecfi \u00e1p su\u1ea5t phun cao h\u01a1n, \u0111\u1ea1t t\u1edbi 130-150 MPa, trong khi c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 th\u00e0nh d\u00e0y c\u00f3 c\u1ed5ng l\u1edbn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u1edbi \u00e1p su\u1ea5t kho\u1ea3ng 70-100 MPa. Trong th\u1ef1c t\u1ebf s\u1ea3n xu\u1ea5t, m\u00e1y phun tr\u1ee5c v\u00edt th\u01b0\u1eddng s\u1eed d\u1ee5ng \u00e1p su\u1ea5t phun d\u01b0\u1edbi 100 MPa (ch\u00fang t\u00f4i s\u1eed d\u1ee5ng 50-70 MPa), trong khi m\u00e1y phun p\u00edt t\u00f4ng th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng \u1edf \u00e1p su\u1ea5t tr\u00ean 100 MPa. \u00c1p su\u1ea5t gi\u1eef kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 cao; \u0111\u1ed1i v\u1edbi m\u00e1y phun tr\u1ee5c v\u00edt th\u01b0\u1eddng s\u1eed d\u1ee5ng \u00e1p su\u1ea5t 30-50 MPa, trong khi m\u00e1y p\u00edt t\u00f4ng y\u00eau c\u1ea7u tr\u00ean 60-70 MPa. N\u1ebfu \u00e1p su\u1ea5t gi\u1eef qu\u00e1 cao s\u1ebd l\u00e0m t\u0103ng \u1ee9ng su\u1ea5t b\u00ean trong c\u1ee7a s\u1ea3n ph\u1ea9m.<\/span>
\n4. T\u1ed1c \u0111\u1ed9 ti\u00eam. T\u1ed1c \u0111\u1ed9 phun \u0111\u00f3ng m\u1ed9t vai tr\u00f2 nh\u1ea5t \u0111\u1ecbnh trong vi\u1ec7c thay \u0111\u1ed5i kh\u1ea3 n\u0103ng ch\u1ea3y c\u1ee7a ch\u1ea5t n\u1ec1n ABS. N\u1ebfu t\u1ed1c \u0111\u1ed9 phun ch\u1eadm, b\u1ec1 ngo\u00e0i c\u1ee7a s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n g\u1ee3n s\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3 h\u00e0n k\u00e9m. N\u1ebfu t\u1ed1c \u0111\u1ed9 phun nhanh, n\u00f3 c\u00f3 th\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c \u0111\u1ed5 \u0111\u1ea7y khu\u00f4n nhanh ch\u00f3ng, nh\u01b0ng n\u00f3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ed9 th\u00f4ng h\u01a1i k\u00e9m v\u00e0 b\u1ec1 m\u1eb7t th\u00f4 r\u00e1p, c\u0169ng nh\u01b0 gi\u1ea3m \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i c\u1ee7a s\u1ea3n ph\u1ea9m. Ngo\u00e0i ra, \u0111\u1ed9 b\u00e1m d\u00ednh c\u1ee7a l\u1edbp m\u1ea1 c\u00f3 th\u1ec3 b\u1ecb gi\u1ea3m do t\u1ed1c \u0111\u1ed9 phun qu\u00e1 cao. Do \u0111\u00f3, trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, ngo\u1ea1i tr\u1eeb khi c\u1ea7n t\u1ed1c \u0111\u1ed9 phun cao do kh\u00f3 \u0111i\u1ec1n khu\u00f4n, th\u00f4ng th\u01b0\u1eddng n\u00ean s\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 phun trung b\u00ecnh ho\u1eb7c th\u1ea5p.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

Molding Process Plastic ABS can also be considered a modification of polystyrene, with higher impact resistance and better mechanical strength compared to HIPS. It has good processability and can be molded using plastic forming equipment such as injection molding machines, extruders, and the like for injection molding, extrusion, blow molding, calendering, lamination, foaming, and thermoforming. […]<\/p>\n","protected":false},"author":1,"featured_media":260,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-259","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"jetpack_featured_media_url":"https:\/\/juyuans.com\/wp-content\/uploads\/2024\/01\/IMG_20231205_141659.jpg","_links":{"self":[{"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/posts\/259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/comments?post=259"}],"version-history":[{"count":0,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/posts\/259\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/media\/260"}],"wp:attachment":[{"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/media?parent=259"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/categories?post=259"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/tags?post=259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}