冷成形封头进行热处理时，是否需带母材热处理验证试件？

飞燕踏雪

某台按照ASME Ⅷ-Ⅰ建造的容器，当冷成形封头（封头材质：SA283、SA285、SA516-60、SA516-70）满足UCS79的规定须进行热处理时，是否需带母材热处理验证试件？

飞燕踏雪

因为SA283、SA285、SA516-60、SA516-70属于P-No1、组1和组2，按照条文UCS-85(c)、(f)的规定，可否理解为在封头热处理时不需要带热处理试样？

fredwang

否，仅限于P-No.1的PWHT。
UCS-85(f) Materials conforming to one of the specifications
listed in P-No. 1 Group Nos. 1 and 2 of QW-422
and all carbon and low alloy steels used in the annealed
condition as permitted by the material specification are
exempt from the requirements of (c) above when the heat
treatment during fabrication is limited to postweld heat
treatment at temperatures below the lower transformation
temperature of the steel. This exemption does not apply
to SA-841.

__________黄

不需要带试板。详见UCS-85