GB/T 18442.7-2017 Translated English of Chinese Standard. (GBT 18442.7-2017, GB/T18442.7-2017, GBT18442.7-2017): Static vacuum insulated cryogenic pressure vessels - Part 7: Rules of pressure strengthening for inner vessels [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]This Part of GB/T 18442 specifies the technical requirements for material, design, manufacture and inspection of the inner vessels of static vacuum insulated cryogenic pressure vessels (hereinafter referred to as the inner vessels) that are manufactured by pressure strengthening technology. |
Contents
| 3 | |
Annex A informative Important quality control points during manufacturing | 18 |
Annex E normative Pressure strengthening treatment | 31 |
Common terms and phrases
according to NB/T Allowable stress austenitic base material Bending sample bending test butt joints cryogenic pressure vessels determined according extensometer ferrite following requirements heat affected zone hole-opening inner vessel insulated cryogenic pressure item and qualification largest deformation less than level lower than level martensite content maximum deformation section meet the requirements Non-destructive Nondestructive testing over-standard defect perimeter measurement permission of welding pre-tensile sample Pre-tensile termination stress pressure equipment NB/T pressure resistance test pressure strengthening process pressure strengthening technology pressure strengthening treatment Product welding test provisions of Annex provisions of GB/T qualification indicators qualification level ring weld test room temperature sample at room sample is perpendicular sample vessel seam zone stainless steel steel plate strengthening pressure Technical permission Tensile sample tensile test termination stress value test item testing machine testing of pressure vacuum insulated cryogenic weld seam reinforcement weld test piece welding materials Welding procedure assessment welding process welding rework