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发表于 2013-1-11 01:43:22
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问:如果改为全熔透支管角焊缝(相当于坡口角度变小为35°),需要重新评定吗?
答:不需要。
QW-100.1 A Welding Procedure Specification (WPS) is a written document that provides direction to the welder or welding operator for making production welds in accordance with Code requirements.
The purpose for qualification of a WPS is to determine that the weldment proposed for construction is capable of providing the required properties for its intended application. Welding procedure qualification establishes the properties of the weldment, not the skill of the welder or welding operator
QW-100.2 In performance qualification, the basic criterion established for welder qualification is to determine the welder’s ability to deposit sound weld metal. The purpose of the performance qualification test for the welding operator is to determine the welding operator’s mechanical
ability to operate the welding equipment.
您把焊接工艺评定(PQR)与焊工技能评定 (WPQ/WOPQ)的概念搞混了。
焊接接头的性能是由经焊接工艺评定合格的 WPS 来确保,而接头的焊接质量是由合格的 WPQ/WOPQ
来保证的,即使焊工/焊接操作工技能评定合格,也会有焊接接头无损检测不合格的情况发生。
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