manual welding & automatic...

By apostolye Date 02-20-2008 07:31

In AWS D1.1 I can't find any difference for manual or automatic welding when we speak about PQR. Normally it`s a difference in parameters.
But, if we keep the same range of parameters we can consider a PQR made by manual FCAW applicable for automatic FCAW? Some other standards specify this like essential variable.So anyone have an answer?

By hogan

Date 02-20-2008 15:01

try looking at the difference between a welding operator and a welder

By GRoberts (***)

Date 02-20-2008 16:31

For PQRs, D1.1 doesn't differentiate between manual, semi-automatic, mahcine, or automatic. Only for welder qualifications.

By apostolye Date 02-23-2008 04:40

Table 4.11 page 145 Essential Variables - Note2: Welders qualified for GMAW, FCAW or GTAW shall be considered as qualified welding operators in the same processes......
BUT FOR PQR?? I can`t find something saying that is accepted or rejected...

By HgTX

Date 03-04-2008 01:58

The PQR is more like a metallurgical compatibility test, so it doesn't matter whether it was manual or automatic; it's all about the materials. The different results you might get in manual vs. automatic have to do with welder skill, so that becomes part of the welder vs. welding operator test.

Hg