焊接工艺评定适用性探讨

分析焊接工艺评定的目的和作用,结合焊接工艺评定的实际使用情况,提出什么情况下可以免做焊接工艺评定,什么情况下应做焊接工艺评定。尽量减少重复性的焊接工艺评定,并将常用钢材的焊接工艺评定形成标准,供制造和安装单位直接使用。对于新开发、新研制的钢材和焊材,必须进行焊接工艺评定,并通过试验整理出一套最佳焊接工艺用于指导生产。

Discussion on applicability of welding procedure qualification

The purpose and the effect of welding procedure qualification (WPQ) are analyzed,combining with the actual use of the WPQ,under what circumstances the WPQ should or not be carried out are put forward.Repetitive WPQ should be reduced as far as possible,and the WPQ standard for the commonly used steel should be created for the manufacturer and installation department.The newly developed steels and welding materials must be carried out with the WPQ,and a optimum set of welding technology are gained by the test for guiding the production.