关于工艺评定母材覆盖问题

草地飞龙

不同P-No的母材做工艺评定，形成WPS后，该WPS是否可以覆盖1.P-No相同的各自母材相焊；2.P-No.与WPS相同的异种材料相焊；
请教是否理解正确。

草地飞龙

每人响应，自己顶一下。

ishure

如果热影响区不需要冲击的话，那么可以焊PNo相同的各自母材，请参考一下资料（欢迎各位提出意见，交流）
QW-403.5 Welding procedure specifications shall be
qualified using one of the following:
(a) the same base metal (including type or grade) to be
used in production welding
(b) for ferrous materials, a base metal listed in the same
P-Number Group Number in table QW/QB-422 as the base
metal to be used in production welding
(c) for nonferrous materials, a base metal listed with
the same P-Number UNS Number in table QW/QB-422
as the base metal to be used in production welding
For ferrous materials in table QW/QB-422, a procedure
qualification shall be made for each P-Number Group Number
combination of base metals, even though procedure
qualification tests have been made for each of the two
base metals welded to itself. If, however, two or more
qualification records have the same essential and supplementary
essential variables, except that the base metals
are assigned to different Group Numbers within the same
P-Number, then the combination of base metals is also
qualified. In addition, when base metals of two different
P-Number Group Number combinations are qualified using
a single test coupon, that coupon qualifies the welding of
those two P-Number Group Numbers to themselves as well
as to each other using the variables qualified.
This variable does not apply when impact testing of the
heat-affected zone is not required by other Sections.

草地飞龙

一般来说，这种做法不应提出异议。但是ASME标准里明确表明，并不是所有P-No.相同的材料都可以使用同一工艺，必须考虑材料的机械性能。

orc874139

QW-403.1  如接头是由不同的P-NO.的两母材焊接而成，即使两者已经分别做过评定，工艺评定仍应按P-NO.的组合来进行。  尤其是后半句，P-NO.讲究的是组合，所以楼主的1，P-No相同的各自母材相焊；--我觉得不可以。

草地飞龙

ishure 发表于 2012-9-3 10:12
如果热影响区不需要冲击的话，那么可以焊PNo相同的各自母材，请参考一下资料（欢迎各位提出意见，交流）
Q ...

感谢指点。请问如果异种材料进行的WPS进行了冲击试验，是否就可以全覆盖了？

lurenjia

{:soso_e179:}别的不懂，就会顶{:soso_e179:}

o江湖郎中o

支持下 向大家学习。。。。。{:soso_e192:}

jia5515

谢谢了，学习了。。。。。。