SAW使用和焊评同批号的焊丝和焊剂，需要焊材预试验吗

freemanxxg

ASME不锈钢焊接低于-104°C:
SAW使用焊丝焊剂和焊评同批号的焊丝和焊剂，还需要另外做焊材预试验吗？

xiaoshao

(-b) Each combination of heat of filler metal and
lot of flux to be used in production welding with the
SAW process shall be pre﹗se tested by conducting impact
tests in accordance with the requirements of (a). Test
coupons shall be prepared in accordance with Section II,
Part C, SFA-5.4, A9.3.5 following the WPS to be used in
production welding.
参照UHA-51(f)(4)(-b)焊材的预使用的测试试板应该是按SFA-5.4准备，PQR做的冲击应该是不算预使用的，FYI

hokkaiwh423

需要做的，标准明确规定了啊，低于-104℃，必须做冲击的，当然焊接试板，也是有条件的豁免了啊