{"id":88,"date":"2026-10-27T09:00:00","date_gmt":"2026-10-27T01:00:00","guid":{"rendered":"https:\/\/panovacuum.cn\/blog\/vacuum-chamber-7-inspection-gates-en\/"},"modified":"2026-11-05T16:29:32","modified_gmt":"2026-11-05T08:29:32","slug":"vacuum-chamber-7-inspection-gates-en","status":"publish","type":"post","link":"https:\/\/panovacuum.cn\/blog\/vacuum-chamber-7-inspection-gates-en\/","title":{"rendered":"Seven checks a vacuum chamber has to pass"},"content":{"rendered":"<p>A welded chamber is not a deliverable chamber. Seven checks are carried out, each signed off and filed, and the report is dispatched with the unit. Records remain available for customer audit.<\/p>\n<h2>1. Drawing review and DFM<\/h2>\n<p>No material is cut until the drawing has passed review. The process engineer assesses three points: manufacturability, tolerance allocation and the most probable leak paths. Defects are less costly to resolve at this stage than after welding.<\/p>\n<h2>2. Incoming material<\/h2>\n<p>Incoming steel is checked against the mill certificate, with the surface examined for scratches or corrosion. Material of the wrong grade or with surface defects is rejected and does not enter stock.<\/p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\"  src=\"https:\/\/panovacuum.cn\/blog\/wp-content\/uploads\/2026\/11\/inspection-weld-visual-gauge-1200w.webp\" alt=\"Checking fillet weld leg length and profile with a weld inspection gauge\" width=\"1200\" height=\"825\" loading=\"lazy\" decoding=\"async\" \/><figcaption>Weld appearance and dimensional check: leg length, reinforcement and undercut are gauged before NDT.<\/figcaption><\/figure>\n<h2>3. Blanking and bevel<\/h2>\n<p>A 30 kW laser cuts the thick plate and forms the weld bevel in a single pass. Consistent fit-up limits distortion in subsequent welding.<\/p>\n<h2>4. Machining<\/h2>\n<p>CNC machining and an H200 floor borer with 4 m-class rotation. Key dimensions are measured and recorded for each part rather than assessed visually.<\/p>\n<h2>5. Welding<\/h2>\n<p>More than 40 gas-shielded stations, TIG and automated, in a bay separately enclosed from the remainder of the shop. Weld records are retained for each chamber.<\/p>\n<h2>6. Helium leak test<\/h2>\n<p>UL1000 tester to the 1\u00d710\u207b\u2079 Pa\u00b7m\u00b3\/s range. Every unit is tested; none are sampled. A failure at this gate returns the unit to the preceding stages.<\/p>\n<h2>7. Final inspection and delivery<\/h2>\n<p>Dimensions are measured against the drawing and surfaces are inspected. The inspection report is dispatched with the chamber, with a copy retained by the customer.<\/p>\n<p>The seven gates are internal working documents rather than website illustrations. If any one of them is relaxed, the leak rate reflects it first. The same process applies to your project once a drawing is submitted.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A welded chamber is not a deliverable chamber. Seven checks are carried out, each signed off and filed, and the report is dispatched with the unit. Records remain available for customer audit.<\/p>\n","protected":false},"author":1,"featured_media":106,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,4],"tags":[],"class_list":["post-88","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-en","category-leak-testing"],"_links":{"self":[{"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/posts\/88","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/comments?post=88"}],"version-history":[{"count":3,"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/posts\/88\/revisions"}],"predecessor-version":[{"id":143,"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/posts\/88\/revisions\/143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/media\/106"}],"wp:attachment":[{"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/media?parent=88"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/categories?post=88"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/panovacuum.cn\/blog\/wp-json\/wp\/v2\/tags?post=88"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}