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楼主 |
发表于 2020-7-8 19:50:39
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谢谢。按照第8章UHA-51,(d) Exemptions from Impact Testing for Base Metals and HAZs. Impact testing is not required for Table UHA-23 base metals for the following combinations of base metals and HAZs (if welded) and MDMTs, except as modified in (c):
(1) for austenitic chromium–nickel stainless steels as follow:
(-a) having a carbon content not exceeding 0.10% at MDMTs of −320°F (−196°C) and warmer;
这里,MDMT在196℃或以上,奥氏体不锈钢碳含量不超过0.10%,母材和热影响区可以免除冲击试验。
(e) Exemptions from Impact Testing for Welding Procedure Qualifications. For Welding Procedure Qualifications,
impact testing is not required for the following combinations of weld metals and MDMTs except as modified in
(c):这里没有豁免设计温度-195℃奥氏体不锈钢的冲击试验
(f) Required Impact Testing for Austenitic Stainless Steel Welding Consumables With MDMTs Colder Than −155°F (−104°C). For production welds at MDMTs colder than −155°F (−104°C), all of the following conditions shall be satisfied:设计温度低于-104℃的焊缝要求冲击试验
上述如何理解。谢谢 |
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