{"id":4118,"date":"2025-02-06T11:50:13","date_gmt":"2025-02-06T03:50:13","guid":{"rendered":"https:\/\/www.oc-epc.com\/?p=4118"},"modified":"2025-02-05T17:06:46","modified_gmt":"2025-02-05T09:06:46","slug":"he-thong-ap-suat-am-chan-khong-duc-bot-bi-mat-la-gi","status":"publish","type":"post","link":"https:\/\/www.oc-epc.com\/vi\/news-blog\/industry-news\/what-is-a-lost-foam-casting-vacuum-negative-pressure-system\/","title":{"rendered":"H\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t \u00e2m ch\u00e2n kh\u00f4ng x\u1ed1p b\u1ecb m\u1ea5t l\u00e0 g\u00ec?"},"content":{"rendered":"<p>Lost Boam \u0111\u00fac l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u00fac m\u00f4 h\u00ecnh bay h\u01a1i trong \u0111\u00f3 x\u1ed1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng thay v\u00ec s\u00e1p.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-4120 aligncenter\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2025\/02\/1Lost-Foam-Casting-Vacuum-Negative-Pressure-System1-300x169.webp\" alt=\"H\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t \u00e2m kh\u00f4ng c\u00f3 b\u1ecdt 1lost\" width=\"772\" height=\"435\" srcset=\"\" sizes=\"(max-width: 772px) 100vw, 772px\" data-srcset=\"\" \/><\/p>\n<h2><strong>T\u1ea1i sao m\u1ed9t h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng c\u1ea7n thi\u1ebft trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t?<\/strong><\/h2>\n<p>C\u00e1c ch\u1ee9c n\u0103ng quan tr\u1ecdng kh\u00e1 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u00fac \u0111\u01b0\u1ee3c ch\u01a1i b\u1edfi h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng trong \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t.<\/p>\n<p>B\u00ean c\u1ea1nh \u0111\u00f3, h\u1ec7 th\u1ed1ng gi\u00fap h\u00fat c\u00e1c kh\u00ed do s\u1ef1 kh\u00ed h\u00f3a c\u1ee7a b\u1ecdt, do \u0111\u00f3 lo\u1ea1i b\u1ecf c\u00e1c khuy\u1ebft t\u1eadt \u0111\u00fac nh\u01b0 l\u1ed7.<\/p>\n<h2><strong>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t \u00e2m kh\u00f4ng c\u00f3 b\u1ecdt b\u1ecb m\u1ea5t l\u00e0 g\u00ec?<\/strong><\/h2>\n<p>M\u1ed9t h\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t \u00e2m t\u00ednh kh\u00f4ng \u0111i\u1ec3m \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n ch\u00ednh:<\/p>\n<ol>\n<li><strong>B\u01a1m ch\u00e2n kh\u00f4ng<\/strong>: \u0110\u00e2y l\u00e0 c\u1ed1t l\u00f5i c\u1ee7a h\u1ec7 th\u1ed1ng, t\u1ea1o ra kho\u1ea3ng tr\u1ed1ng c\u1ea7n thi\u1ebft cho qu\u00e1 tr\u00ecnh n\u00e0y.<\/li>\n<li><strong>B\u1ed9 thu b\u1ee5i \u01b0\u1edbt:<\/strong>Th\u00e0nh ph\u1ea7n n\u00e0y lo\u1ea1i b\u1ecf c\u00e1c h\u1ea1t c\u00e1t v\u00e0 b\u1ee5i kh\u1ecfi kh\u00ed th\u1ea3i \u0111\u01b0\u1ee3c k\u00e9o t\u1eeb h\u1ed9p c\u00e1t.<\/li>\n<li><strong>B\u1ec3 \u1ed5n \u0111\u1ecbnh \u00e1p su\u1ea5t:<\/strong>Container k\u00edn n\u00e0y \u1ed5n \u0111\u1ecbnh \u00e1p su\u1ea5t trong h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng.<\/li>\n<li><strong>Ki\u1ec3m tra van (van m\u1ed9t chi\u1ec1u):<\/strong>Van n\u00e0y ng\u0103n n\u01b0\u1edbc ch\u1ea3y tr\u1edf l\u1ea1i v\u00e0o h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng trong tr\u01b0\u1eddng h\u1ee3p m\u1ea5t \u0111i\u1ec7n \u0111\u1ed9t ng\u1ed9t ho\u1eb7c d\u1eebng l\u1ea1i kh\u00e1c.<\/li>\n<li><strong>M\u00e1y ph\u00e2n t\u00e1ch kh\u00f4ng kh\u00ed:<\/strong>Th\u00e0nh ph\u1ea7n n\u00e0y ng\u0103n c\u00e1ch n\u01b0\u1edbc mang theo kh\u00f4ng kh\u00ed t\u1eeb b\u01a1m ch\u00e2n kh\u00f4ng.<\/li>\n<li><strong>Nh\u00e0 ph\u00e2n ph\u1ed1i ch\u00e2n kh\u00f4ng (m\u00e1y l\u1eafp gh\u00e9p ch\u00e2n kh\u00f4ng), \u1ed1ng ch\u00e2n kh\u00f4ng v\u00e0 k\u1ebft n\u1ed1i \u0111\u01b0\u1eddng \u1ed1ng:<\/strong>C\u00e1c y\u1ebfu t\u1ed1 n\u00e0y t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c ph\u00e2n ph\u1ed1i ch\u00e2n kh\u00f4ng cho c\u00e1c h\u1ed9p c\u00e1t.<\/li>\n<\/ol>\n<h2><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng trong qu\u00e1 tr\u00ecnh \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t?<\/strong><\/h2>\n<p><img decoding=\"async\" class=\"wp-image-4121 aligncenter\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2025\/02\/2Lost-Foam-Casting-Vacuum-Negative-Pressure-System2-300x225.webp\" alt=\"\" width=\"740\" height=\"555\" srcset=\"\" sizes=\"(max-width: 740px) 100vw, 740px\" data-srcset=\"\" \/><\/p>\n<p>Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u b\u1edfi m\u1ed9t m\u00e1y b\u01a1m ch\u00e2n kh\u00f4ng h\u00fat kh\u00f4ng kh\u00ed t\u1eeb m\u1ed9t th\u00f9ng ch\u1ee9a k\u00edn, t\u1ea1o ra m\u1ed9t kho\u1ea3ng tr\u1ed1ng c\u1ea7n thi\u1ebft cho qu\u00e1 tr\u00ecnh \u0111\u00fac.<\/p>\n<h3><strong><b>Trong qu\u00e1 tr\u00ecnh \u0111\u00fac, h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng c\u00f3 m\u1ed9t s\u1ed1 ch\u1ee9c n\u0103ng:<\/b><\/strong><\/h3>\n<p>Trong qu\u00e1 tr\u00ecnh \u0111\u00fac, h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 ch\u1ee9c n\u0103ng thi\u1ebft y\u1ebfu.<\/p>\n<p>Ngo\u00e0i ra, h\u1ec7 th\u1ed1ng chi\u1ebft xu\u1ea5t c\u00e1c kh\u00ed \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t trong qu\u00e1 tr\u00ecnh kh\u00ed h\u00f3a b\u1ecdt, ng\u0103n ng\u1eeba c\u00e1c khuy\u1ebft t\u1eadt \u0111\u00fac nh\u01b0 l\u1ed7.<\/p>\n<h2><strong>\u00c1p l\u1ef1c ti\u00eau c\u1ef1c l\u00fd t\u01b0\u1edfng cho vi\u1ec7c \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t l\u00e0 g\u00ec?<\/strong><\/h2>\n<p><img decoding=\"async\" class=\"wp-image-4122 aligncenter\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2025\/02\/3Lost-Foam-Casting-Vacuum-Negative-Pressure-System3-300x206.webp\" alt=\"\" width=\"696\" height=\"478\" srcset=\"\" sizes=\"(max-width: 696px) 100vw, 696px\" data-srcset=\"\" \/><\/p>\n<p>\u0110\u1ed1i v\u1edbi th\u00e9p \u0111\u00fac, \u00e1p su\u1ea5t \u00e2m l\u00fd t\u01b0\u1edfng dao \u0111\u1ed9ng t\u1eeb 0,04MPa \u0111\u1ebfn 0,06MPa.<\/p>\n<ul>\n<li><strong>Qu\u00e1 th\u1ea5p:<\/strong>N\u1ebfu \u00e1p l\u1ef1c qu\u00e1 th\u1ea5p, n\u00f3 c\u00f3 th\u1ec3 khi\u1ebfn h\u1ed9p s\u1ee5p \u0111\u1ed5, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi \u0111\u00fac c\u00e1c m\u1ea3nh l\u1edbn.<\/li>\n<li><strong>Qu\u00e1 cao:<\/strong>Ng\u01b0\u1ee3c l\u1ea1i, \u00e1p su\u1ea5t \u00e2m qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 m\u1ea5t \u1ed5n \u0111\u1ecbnh c\u1ee7a ch\u1ea5t l\u00e0m \u0111\u1ea7y kim lo\u1ea1i l\u1ecfng, t\u0103ng hi\u1ec7u \u1ee9ng g\u1eafn t\u01b0\u1eddng v\u00e0 d\u1eabn \u0111\u1ebfn c\u00e1c khi\u1ebfm khuy\u1ebft nh\u01b0 bao g\u1ed3m x\u1ec9 v\u00e0 t\u1ebf b\u00e0o ph\u00f2ng h\u00f3a.<\/li>\n<li><strong>L\u00e0m \u0111\u1ea7y t\u1ed1i \u01b0u<\/strong>: Ch\u1ea5t \u0111\u1ea7y khu\u00f4n nhanh nh\u1ea5t x\u1ea3y ra \u1edf nhi\u1ec7t \u0111\u1ed9 r\u00f3t l\u00e0 1450 v\u00e0 \u00e1p su\u1ea5t \u00e2m 0,04MPa.<\/li>\n<li><strong>\u00c1p l\u1ef1c \u00e2m cao<\/strong>: Khi \u00e1p su\u1ea5t \u00e2m qu\u00e1 cao, n\u00f3 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u00f2ng ch\u1ea3y c\u1ee7a kim lo\u1ea1i n\u00f3ng ch\u1ea3y, khi\u1ebfn n\u00f3 ch\u1ea3y d\u1ecdc theo th\u00e0nh c\u1ee7a \u0111\u00fac.<\/li>\n<li><strong>H\u00f3a r\u1eafn<\/strong>: S\u1ef1 h\u00f3a r\u1eafn nhanh nh\u1ea5t x\u1ea3y ra \u1edf 1450 v\u00e0 \u00e1p su\u1ea5t \u00e2m 0,06MPa.<\/li>\n<li><strong>Co ng\u00f3t<\/strong>: L\u01b0\u1ee3ng co r\u00fat nh\u1ecf nh\u1ea5t \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y \u1edf 1420 v\u00e0 \u00e1p su\u1ea5t \u00e2m 0,05MPa.<\/li>\n<\/ul>\n<h2><strong>T\u1ea1i sao c\u00e1c h\u1ec7 th\u1ed1ng x\u1eed l\u00fd kh\u00ed th\u1ea3i th\u00edch h\u1ee3p quan tr\u1ecdng trong vi\u1ec7c \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t?<\/strong><\/h2>\n<p>H\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t \u00e2m kh\u00f4ng ch\u00e2n kh\u00f4ng thu th\u1eadp kh\u00ed th\u1ea3i, ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111\u1ec3 ng\u0103n ng\u1eeba \u00f4 nhi\u1ec5m.<\/p>\n<h2><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 m\u1ed9t h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng trung t\u00e2m t\u0103ng c\u01b0\u1eddng qu\u00e1 tr\u00ecnh \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t?<\/strong><\/h2>\n<p>M\u1ed9t h\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng trung t\u00e2m \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u00fac b\u1ecdt b\u1ecb m\u1ea5t, mang l\u1ea1i nhi\u1ec1u l\u1ee3i th\u1ebf.<\/p>\n<p>H\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c trang b\u1ecb b\u01a1m ch\u00e2n kh\u00f4ng \u0111\u00e1ng tin c\u1eady v\u00e0 s\u1eed d\u1ee5ng ki\u1ec3m so\u00e1t \u00e1p su\u1ea5t kh\u00f4ng \u0111\u1ed5i \u0111\u1ec3 duy tr\u00ec \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng nh\u1ea5t qu\u00e1n.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4119 aligncenter\" src=\"http:\/\/www.oc-epc.com\/wp-content\/uploads\/2025\/02\/4Lost-Foam-Casting-Vacuum-Negative-Pressure-System4-300x225.webp\" alt=\"H\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t \u00e2m kh\u00f4ng ch\u00e2n kh\u00f4ng x\u1ed1p 4lost\" width=\"697\" height=\"523\" srcset=\"\" sizes=\"(max-width: 697px) 100vw, 697px\" data-srcset=\"\" \/><\/p>\n<p>H\u1ec7 th\u1ed1ng c\u0169ng \u0111\u1ea3m b\u1ea3o l\u00e0m m\u00e1t nhanh khu\u00f4n tr\u1eafng, gi\u1ea3m \u0111\u1ed9 \u1ea9m \u0111\u1ec3 ng\u0103n ng\u1eeba bi\u1ebfn d\u1ea1ng sau khi gi\u1ea3m.<\/p>\n<h2><strong>C\u00f4ng ty TNHH C\u00f4ng ngh\u1ec7 H\u00e0ng Ch\u00e2u Ouchen.<\/strong><\/h2>\n<p><a href=\"https:\/\/www.oc-epc.com\/vi\/\"><strong><u>C\u00f4ng ty TNHH C\u00f4ng ngh\u1ec7 H\u00e0ng Ch\u00e2u Ouchen<\/u><\/strong><\/a>\u00a0l\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng \u0111\u1ea7u c\u1ee7a <a href=\"https:\/\/www.oc-epc.com\/vi\/cac-san-pham\/\"><strong><u><b>Thi\u1ebft b\u1ecb \u0111\u00fac x\u1ed1p b\u1ecb m\u1ea5t th\u00f4ng minh cao c\u1ea5p<\/b><\/u><\/strong><\/a>, D\u00e0nh ri\u00eang \u0111\u1ec3 cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p ti\u00ean ti\u1ebfn cho ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>\n<p>C\u00f4ng ty C\u00f4ng ngh\u1ec7 H\u00e0ng Ch\u00e2u Ouchen n\u1eb1m \u1edf th\u1ecb tr\u1ea5n Xindeng, qu\u1eadn Fuyang, Th\u00e0nh ph\u1ed1 H\u00e0ng Ch\u00e2u, m\u1ed9t trung t\u00e2m s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb EPS l\u1edbn \u1edf Trung Qu\u1ed1c.<\/p>\n<h2><strong>H\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng trung t\u00e2m c\u1ee7a Ouchen<\/strong><\/h2>\n<p><a href=\"https:\/\/www.oc-epc.com\/vi\/san-pham\/he-thong-chan-khong-trung-tam\/\"><strong><u>H\u1ec7 th\u1ed1ng ch\u00e2n kh\u00f4ng trung t\u00e2m c\u1ee7a Ouchen<\/u><\/strong><\/a>\u00a0l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m ch\u00ednh \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady, thi\u1ebft k\u1ebf hi\u1ec7u qu\u1ea3 v\u00e0 s\u1eed d\u1ee5ng c\u00e1c th\u00e0nh ph\u1ea7n ch\u1ea5t l\u01b0\u1ee3ng cao. <a href=\"https:\/\/www.oc-epc.com\/vi\/lien-he\/\"><strong><u><b>li\u00ean h\u1ec7 v\u1edbi h\u1ecd<\/b><\/u><\/strong><\/a>\u00a0t\u1ea1i +86 15988479417 ho\u1eb7c zyh@oc-epc.com.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Lost foam casting is one of the evaporative-pattern casting in which foam is used instead of wax. It consists of setting a foam pattern in sand with its pouring basin and sprue, then pouring the molten metal into the mold to vaporize the foam, hence casting the desired pattern. The vacuum negative pressure system is [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4120,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[160],"tags":[],"class_list":["post-4118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"acf":[],"jetpack_publicize_connections":[],"_links":{"self":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4118","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=4118"}],"version-history":[{"count":1,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4118\/revisions"}],"predecessor-version":[{"id":4123,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/posts\/4118\/revisions\/4123"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media\/4120"}],"wp:attachment":[{"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/media?parent=4118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/categories?post=4118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oc-epc.com\/vi\/wp-json\/wp\/v2\/tags?post=4118"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}