4 февр. 2010 г. · The two PQRs can be combined into one WPS permitting a wide range of travel speed and a wider range of amperage and voltage than would be ...

15 апр. 2009 г. · Hello, I've a question about Table 4.6: PQR Supplementary Essential Variable Changes for CVN Testing Applications of AWS D1.1.

2 нояб. 2007 г. · The PQR's are intended to qualify welding procedure specifications(WPS's); not to qualify the welders. Usually the welder who actually welded ...

20 нояб. 2008 г. · I think you are correct (at least in most cases) that the GMAWP is an essencial variable (with the possible exception of ASME IX).

15 авг. 2012 г. · Position limitation is listed in table 4.1, the essential variables that have to be addressed by the WPS (and PQR) are listed in table 4.5, ...

15 февр. 2012 г. · I have 2 PQR's (or more) and use them to qualify a single WPS. Just be clear on your WPS if the different WFS and Voltages are for different ...

4 янв. 2005 г. · A change in direction is an essential variable and requires requalification of your WPS. An exception may be if you complete testing using all the variables ...

8 янв. 2016 г. · Historically, I have reviewed WPS's with supporting PQR's where the essential variables line up. I am reviewing a vendor's GTAW WPS.

22 янв. 2007 г. · Could someone help me understand what is meant by. PQR Essential Variable Changes AWS D1.1:2006 FCAW Items 12), 16), & 17) in relation to ...

23 янв. 2007 г. · D1.1 means when it says "for each diameter". For instance, if you do a FCAW PQR with 200 amps using 1/16" wire from root to cap, you would be qualified for: