{"id":243,"date":"2025-08-02T09:04:19","date_gmt":"2025-08-02T01:04:19","guid":{"rendered":"https:\/\/zjhaotianwelding.com\/?p=243"},"modified":"2025-09-15T08:51:36","modified_gmt":"2025-09-15T00:51:36","slug":"ppr-welding-details","status":"publish","type":"post","link":"https:\/\/zjhaotianwelding.com\/vi\/ppr-welding-details\/","title":{"rendered":"Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cho h\u00e0n nhi\u1ec7t \u1ed1ng PPR"},"content":{"rendered":"<p class=\"wp-block-paragraph\">An to\u00e0n v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a h\u1ec7 th\u1ed1ng \u1ed1ng PPR ph\u1ee5 thu\u1ed9c quan tr\u1ecdng v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n nhi\u1ec7t. Vi\u1ec7c n\u1eafm v\u1eefng c\u00e1c y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n sau \u0111\u00e2y l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u0110i\u1ec1u khi\u1ec3n nhi\u1ec7t \u0111\u1ed9 ch\u00ednh x\u00e1c (260\u2103\u00b110)<\/strong><br>C\u00e1c k\u1ef9 s\u01b0 c\u1ea3nh b\u00e1o: M\u00e1y h\u00e0n nhi\u1ec7t c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh (lo\u1ea1i PPR\/PE \u0111a n\u0103ng, nh\u01b0 h\u00ecnh minh h\u1ecda b\u00ean d\u01b0\u1edbi) ti\u1ec1m \u1ea9n nguy c\u01a1 nghi\u00eam tr\u1ecdng do \u0111\u1ed9 ch\u00ednh x\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u1ea3m b\u1ea3o\u2014\n<ul class=\"wp-block-list\">\n<li>Qu\u00e1 nhi\u1ec7t \u2192 L\u1ecfng h\u00f3a qu\u00e1 m\u1ee9c \u2192 H\u1eb9p \u0111\u1ea7u \u1ed1ng (Gi\u1ea3m \u0111\u01b0\u1eddng k\u00ednh trong \u226530%)<\/li>\n\n\n\n<li>Nhi\u1ec7t \u0111\u1ed9 th\u1ea5p \u2192 H\u1ee3p kim kh\u00f4ng ho\u00e0n to\u00e0n \u2192 T\u00e1ch l\u1edbp t\u1ea1i m\u1ed1i h\u00e0n l\u1ea1nh (70% c\u00f3 nguy c\u01a1 r\u00f2 r\u1ec9 cao h\u01a1n)<br><strong>K\u1ebft lu\u1eadn: Khuy\u1ebfn c\u00e1o m\u1ea1nh m\u1ebd kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng m\u00e1y h\u00e0n \u0111i\u1ec1u ch\u1ec9nh cho c\u00e1c k\u1ebft n\u1ed1i PPR.<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u0110\u1ed9 s\u00e2u h\u00e0n ti\u00eau chu\u1ea9n<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ed9 s\u00e2u qu\u00e1 m\u1ee9c: V\u1eadt li\u1ec7u tr\u00e0n \u2192 H\u1eb9p \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng ch\u1ea3y<\/li>\n\n\n\n<li>\u0110\u1ed9 s\u00e2u kh\u00f4ng \u0111\u1ee7: K\u1ebft d\u00ednh kh\u00f4ng \u0111\u1ee7 \u2192 H\u01b0 h\u1ecfng do \u00e1p l\u1ef1c<br><strong>Quy tr\u00ecnh: Tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n \u0111\u1ed9 d\u00e0y theo \u0111\u01b0\u1eddng k\u00ednh (v\u00ed d\u1ee5: \u1ed1ng DN20 = 14,5 \u00b1 0,5 mm)<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Th\u1eddi gian s\u01b0\u1edfi \u1ea5m ch\u00ednh x\u00e1c<\/strong>Diameter(mm)Heating(s)Tolerance205\u00b10.5257\u00b10.5328\u00b10.5<strong>Hi\u1ec7u \u1ee9ng l\u00e0m vi\u1ec7c ngo\u00e0i gi\u1edd: T\u0103ng \u0111\u1ed9t bi\u1ebfn ch\u1ec9 s\u1ed1 ch\u1ea3y c\u1ee7a nh\u1ef1a \u2192 S\u1ef1 co h\u1eb9p v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n GB\/T 18742.3 (\u22645%)<\/strong><\/li>\n\n\n\n<li><strong>Quy tr\u00ecnh gh\u00e9p n\u1ed1i<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ea9y theo h\u01b0\u1edbng tr\u1ee5c ngang (T\u1ed1c \u0111\u1ed9 \u22643mm\/s)<\/li>\n\n\n\n<li>Gi\u1eef \u00e1p su\u1ea5t \u22655 gi\u00e2y (C\u1ea5m xoay! G\u00e2y r\u1ed1i lo\u1ea1n c\u1ea5u tr\u00fac chu\u1ed7i ph\u00e2n t\u1eed)<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed1i c\u00f9ng:<\/strong><br>T\u1ea5t c\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng h\u00e0n&nbsp;<strong>ph\u1ea3i tr\u1ea3i qua th\u1eed nghi\u1ec7m th\u1ee7y t\u0129nh<\/strong>&nbsp;(\u00c1p su\u1ea5t th\u1eed nghi\u1ec7m = 1,5 l\u1ea7n \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c, th\u1eddi gian \u226530 ph\u00fat) \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c khuy\u1ebft t\u1eadt r\u00f2 r\u1ec9 nh\u1ecf.<\/p>","protected":false},"excerpt":{"rendered":"<p>An to\u00e0n v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a h\u1ec7 th\u1ed1ng \u1ed1ng PPR ph\u1ee5 thu\u1ed9c quan tr\u1ecdng v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n nhi\u1ec7t. Vi\u1ec7c n\u1eafm v\u1eefng c\u00e1c y\u1ebfu t\u1ed1 v\u1eadn h\u00e0nh sau \u0111\u00e2y l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c: Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed1i c\u00f9ng: T\u1ea5t c\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng h\u00e0n ph\u1ea3i tr\u1ea3i qua th\u1eed nghi\u1ec7m th\u1ee7y t\u0129nh (\u00c1p su\u1ea5t th\u1eed nghi\u1ec7m = 1,5 l\u1ea7n \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c, th\u1eddi gian \u226530 ph\u00fat) \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c khuy\u1ebft t\u1eadt r\u00f2 r\u1ec9 vi m\u00f4.<\/p>","protected":false},"author":1,"featured_media":244,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-243","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Technical Specifications for PPR Pipe Fusion Welding - 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