{"id":1078,"date":"2026-10-28T09:21:25","date_gmt":"2026-10-28T01:21:25","guid":{"rendered":"https:\/\/yuannaitube.com\/high-pressure-plastic-tubing-guide\/"},"modified":"2026-11-03T14:13:45","modified_gmt":"2026-11-03T06:13:45","slug":"huong-dan-su-dung-ong-nhua-chiu-ap-suat-cao","status":"publish","type":"post","link":"https:\/\/yuannaitube.com\/vi\/high-pressure-plastic-tubing-guide\/","title":{"rendered":"So s\u00e1nh c\u00e1c lo\u1ea1i \u1ed1ng nh\u1ef1a ch\u1ecbu \u00e1p su\u1ea5t cao: PA6, PA12 v\u00e0 v\u1eadt li\u1ec7u composite"},"content":{"rendered":"
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\u1ed0ng nh\u1ef1a ch\u1ecbu \u00e1p su\u1ea5t cao: c\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn<\/h2>\n

\u0110\u1ed1i v\u1edbi \u1ed1ng nh\u1ef1a, \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi ba y\u1ebfu t\u1ed1 k\u1ebft h\u1ee3p v\u1edbi nhau: v\u1eadt li\u1ec7u, \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i v\u00e0 \u0111\u1ed9 d\u00e0y th\u00e0nh \u1ed1ng. Trong c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m PA6, PA12 v\u00e0 composite c\u1ee7a ch\u00fang t\u00f4i, \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c t\u1ed1i \u0111a \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea l\u00e0 41 bar, \u00e1p d\u1ee5ng cho k\u00edch th\u01b0\u1edbc nh\u1ecf nh\u1ea5t c\u1ee7a d\u00f2ng PA6 (YN-PA6 0425, \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i 4 mm \u00d7 \u0111\u01b0\u1eddng k\u00ednh trong 2,5 mm). K\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng t\u1ef1 trong d\u00f2ng PA12 c\u00f3 \u00e1p su\u1ea5t \u0111\u1ecbnh m\u1ee9c l\u00e0 29 bar v\u00e0 trong \u1ed1ng composite ch\u1ecbu \u00e1p su\u1ea5t cao l\u00e0 16 bar. \u00c1p su\u1ea5t th\u01b0\u1eddng gi\u1ea3m khi \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i t\u0103ng v\u00e0 khi th\u00e0nh \u1ed1ng m\u1ecfng \u0111i.<\/p>\n

\u1ed0ng composite \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh linh ho\u1ea1t, v\u1edbi l\u1edbp ngo\u00e0i l\u00e0m t\u1eeb PU ho\u1eb7c TPU polyether bao ph\u1ee7 l\u1edbp trong l\u00e0m t\u1eeb PA12; do \u0111\u00f3, h\u00e3y l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m n\u00e0y d\u1ef1a tr\u00ean b\u00e1n k\u00ednh u\u1ed1n cong, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u1ec3 ch\u1ecbu \u00e1p su\u1ea5t cao nh\u1ea5t. H\u00e3y ch\u1ecdn k\u00edch th\u01b0\u1edbc t\u1eeb b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y, sau \u0111\u00f3 x\u00e1c nh\u1eadn nhi\u1ec7t \u0111\u1ed9, ph\u1ee5 ki\u1ec7n v\u00e0 m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng.<\/p>\n<\/div>\n

\u00c1p su\u1ea5t l\u00e0m vi\u1ec7c theo k\u00edch th\u01b0\u1edbc: PA6, PA12 v\u00e0 v\u1eadt li\u1ec7u composite<\/h2>\n

B\u1ea3ng n\u00e0y li\u1ec7t k\u00ea c\u00e1c \u1ed1ng c\u00f3 c\u00f9ng \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i v\u00e0 \u0111\u01b0\u1eddng k\u00ednh trong, \u0111\u01b0\u1ee3c tr\u00edch t\u1eeb b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i \u1ed0ng nylon PA6<\/a>, \u1ed0ng nylon PA12<\/a> v\u00e0 \u1ed0ng composite ch\u1ecbu \u00e1p su\u1ea5t cao<\/a>. C\u00e1c gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c t\u00ednh theo \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c (\u0111\u01a1n v\u1ecb: bar) \u1edf nhi\u1ec7t \u0111\u1ed9 23 \u00b0C. Hai c\u1ea5u tr\u00fac composite (V8 c\u00f3 l\u1edbp ngo\u00e0i b\u1eb1ng PU, V9 c\u00f3 l\u1edbp ngo\u00e0i b\u1eb1ng TPU polyether) \u0111\u1ec1u c\u00f3 c\u00f9ng gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c \u0111\u1ed1i v\u1edbi c\u00e1c k\u00edch th\u01b0\u1edbc n\u00e0y.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0110\u01b0\u1eddng k\u00ednh ngo\u00e0i \u00d7 \u0110\u01b0\u1eddng k\u00ednh trong (mm)<\/th>\nPA6 (thanh)<\/th>\nPA12 (thanh)<\/th>\nV8 \/ V9 h\u1ed7n h\u1ee3p (thanh)<\/th>\n<\/tr>\n<\/thead>\n
4 \u00d7 2,5<\/td>\n41<\/td>\n29<\/td>\n16<\/td>\n<\/tr>\n
6 \u00d7 4<\/td>\n35<\/td>\n27<\/td>\n14<\/td>\n<\/tr>\n
8 \u00d7 5<\/td>\n28<\/td>\n29<\/td>\n15<\/td>\n<\/tr>\n
8 \u00d7 6<\/td>\n23<\/td>\n17<\/td>\n12<\/td>\n<\/tr>\n
10 \u00d7 6,5<\/td>\n31<\/td>\n24<\/td>\n19<\/td>\n<\/tr>\n
10 \u00d7 8<\/td>\n18<\/td>\n14<\/td>\n12<\/td>\n<\/tr>\n
12 \u00d7 8<\/td>\n22<\/td>\n16<\/td>\n17<\/td>\n<\/tr>\n
16 \u00d7 12<\/td>\n22<\/td>\n14<\/td>\n15<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

C\u00f3 ba xu h\u01b0\u1edbng \u0111\u00e1ng ch\u00fa \u00fd trong b\u1ea3ng n\u00e0y. PA6 c\u00f3 \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c cao nh\u1ea5t \u1edf h\u1ea7u h\u1ebft c\u00e1c k\u00edch th\u01b0\u1edbc. PA12 ch\u1ec9 ngang b\u1eb1ng ho\u1eb7c v\u01b0\u1ee3t tr\u1ed9i h\u01a1n PA6 \u1edf k\u00edch th\u01b0\u1edbc 8 \u00d7 5. C\u00f2n \u1ed1ng composite v\u01b0\u1ee3t tr\u1ed9i h\u01a1n PA12 \u1edf c\u00e1c k\u00edch th\u01b0\u1edbc 12 \u00d7 8 v\u00e0 16 \u00d7 12, \u0111\u1ed3ng th\u1eddi duy tr\u00ec b\u00e1n k\u00ednh u\u1ed1n cong nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi c\u1ea3 hai lo\u1ea1i nylon \u1edf c\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u00f3.<\/p>\n

\u0110\u1ed9 d\u00e0y th\u00e0nh \u1ed1ng c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m ch\u1ea5t li\u1ec7u<\/h2>\n

V\u1edbi c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i, th\u00e0nh \u1ed1ng d\u00e0y h\u01a1n (\u0111\u01b0\u1eddng k\u00ednh trong nh\u1ecf h\u01a1n) s\u1ebd ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p su\u1ea5t cao h\u01a1n. \u0110\u1ed1i v\u1edbi \u1ed1ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i 8 mm, c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u li\u1ec7t k\u00ea nh\u01b0 sau:<\/p>\n

\n\n\n\n\n\n\n\n
K\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i 8 mm<\/th>\n\u0110\u1ed9 d\u00e0y th\u00e0nh (mm)<\/th>\nPA6 (thanh)<\/th>\nPA12 (thanh)<\/th>\nV\u1eadt li\u1ec7u composite (thanh)<\/th>\n<\/tr>\n<\/thead>\n
8 \u00d7 5<\/td>\n1.5<\/td>\n28<\/td>\n29<\/td>\n15<\/td>\n<\/tr>\n
8 \u00d7 5,5<\/td>\n1.25<\/td>\n28<\/td>\n19<\/td>\n12<\/td>\n<\/tr>\n
8 \u00d7 6<\/td>\n1.0<\/td>\n23<\/td>\n17<\/td>\n12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

C\u00e1c \u1ed1ng c\u00f3 k\u00edch th\u01b0\u1edbc 8 \u00d7 5 v\u00e0 8 \u00d7 6 c\u00f3 c\u00f9ng \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi c\u00f9ng m\u1ed9t lo\u1ea1i \u0111\u1ea7u n\u1ed1i nhanh d\u1ea1ng c\u1eafm, nh\u01b0ng \u00e1p su\u1ea5t \u0111\u1ecbnh m\u1ee9c l\u1ea1i kh\u00e1c nhau. Khi \u0111\u01b0\u1eddng \u1ed1ng c\u1ea7n \u00e1p su\u1ea5t cao h\u01a1n, h\u00e3y chuy\u1ec3n sang lo\u1ea1i \u1ed1ng c\u00f3 th\u00e0nh d\u00e0y h\u01a1n nh\u01b0ng v\u1eabn gi\u1eef nguy\u00ean \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i tr\u01b0\u1edbc khi thay \u0111\u1ed5i v\u1eadt li\u1ec7u. H\u01b0\u1edbng d\u1eabn c\u00e1ch l\u1ef1a ch\u1ecdn \u1ed1ng ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ea7u n\u1ed1i<\/a> c\u1ee7a ch\u00fang t\u00f4i gi\u1ea3i th\u00edch l\u00fd do t\u1ea1i sao OD l\u00e0 k\u00edch th\u01b0\u1edbc ph\u1ea3i kh\u1edbp.<\/p>\n

C\u00e1ch ch\u1ecdn \u1ed1ng \u00e1p su\u1ea5t cao, t\u1eebng b\u01b0\u1edbc m\u1ed9t<\/h2>\n
    \n
  1. C\u00e0i \u0111\u1eb7t \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c t\u1ed1i \u0111a<\/strong> c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng, bao g\u1ed3m c\u1ea3 c\u00e1c \u0111i\u1ec3m \u00e1p su\u1ea5t \u0111\u1ec9nh do van v\u00e0 m\u00e1y b\u01a1m g\u00e2y ra, v\u00e0 so s\u00e1nh v\u1edbi \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c trong b\u1ea3ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u00e1p su\u1ea5t v\u1ee1.<\/li>\n
  2. Ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9.<\/strong> C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt tr\u00ean \u0111\u01b0\u1ee3c \u0111o \u1edf nhi\u1ec7t \u0111\u1ed9 23 \u00b0C. Kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p su\u1ea5t s\u1ebd gi\u1ea3m khi \u1ed1ng n\u00f3ng l\u00ean; xem ph\u1ea7n H\u01b0\u1edbng d\u1eabn v\u1ec1 \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9<\/a> \u0111\u1ec3 bi\u1ebft c\u00e1c h\u1ec7 s\u1ed1 gi\u1ea3m \u00e1p su\u1ea5t cho ph\u00e9p.<\/li>\n
  3. Ch\u1ecdn \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i (OD) ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ea7u n\u1ed1i,<\/strong> sau \u0111\u00f3 ch\u1ecdn \u0111\u1ed9 d\u00e0y th\u00e0nh \u1ed1ng ph\u00f9 h\u1ee3p v\u1edbi \u00e1p su\u1ea5t. S\u1eed d\u1ee5ng b\u1ea3ng k\u00edch th\u01b0\u1edbc \u1ed1ng<\/a> \u0111\u1ec3 t\u00ecm t\u1ea5t c\u1ea3 c\u00e1c k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 d\u00e0y th\u00e0nh \u1ed1ng m\u00e0 ch\u00fang t\u00f4i li\u1ec7t k\u00ea.<\/li>\n
  4. Ki\u1ec3m tra b\u00e1n k\u00ednh u\u1ed1n cong.<\/strong> M\u1ed9t b\u1ee9c t\u01b0\u1eddng c\u1ee9ng, ch\u1ecbu \u00e1p su\u1ea5t cao c\u1ea7n c\u00f3 b\u00e1n k\u00ednh l\u1edbn h\u01a1n; xem H\u01b0\u1edbng d\u1eabn v\u1ec1 b\u00e1n k\u00ednh u\u1ed1n cong<\/a>. \u1ed0ng composite c\u00f3 th\u1ec3 u\u1ed1n cong v\u1edbi b\u00e1n k\u00ednh nh\u1ecf h\u01a1n so v\u1edbi \u1ed1ng PA6 c\u00f9ng k\u00edch th\u01b0\u1edbc.<\/li>\n
  5. Ch\u1ecdn ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i ch\u1ea5t.<\/strong> Nylon v\u00e0 polyurethane ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i l\u01b0u ch\u1ea5t kh\u00e1c nhau; h\u01b0\u1edbng d\u1eabn v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu h\u00f3a ch\u1ea5t<\/a> tr\u00ecnh b\u00e0y c\u00e1c m\u1ee9c \u0111\u00e1nh gi\u00e1 \u0111\u00e3 c\u00f4ng b\u1ed1.<\/li>\n
  6. X\u00e1c nh\u1eadn k\u00edch th\u01b0\u1edbc tr\u00ean b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/strong> cho m\u1eabu s\u1ea3n ph\u1ea9m c\u1ee7a b\u1ea1n tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng.<\/li>\n<\/ol>\n

    PA6, PA12 hay v\u1eadt li\u1ec7u composite: lo\u1ea1i n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng vi\u1ec7c n\u00e0o<\/h2>\n