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Anonymous Poster

WPQT Test Piece

04/23/2010 10:07 PM

hi all,

I want to execute wpqt(welder performance qualification test) soon.

this is about test piece for test. we use material 16mo3 and thk 10mm.

I already refer to the asme ix, the size of test piece is 150mm min length and width is 150mm.

could we put the backing plate at back test piece same like aws d1.1 clause 4, qualification figure 4.31?

but this project refer to asme ix

kindly please advice.
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munneykhan
Associate

Join Date: Aug 2008
Posts: 26
Good Answers: 2
#1

Re: WPQT Test Piece

04/25/2010 1:22 AM

WQT shall be fully comply with qualified WPS .

for qualifiying WPS , delection of backing ring is nonessential parameters oin case of SMAW .

you can refer QW-433 sec Ix Alternate F-Numbers for Welde Performance Qualification for welder qualification .

welder qualified with out backing ring is qualified for with backing ring & without backing ring . If welder qualified with backing ring can be only able to do weld with backing only.

you can put backing ring in test piece with considering above mentioned qalification .

with regards
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pandithan
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Join Date: Apr 2010
Location: trichy
Posts: 1
#2
In reply to #1

Re: WPQT Test Piece

04/25/2010 10:25 AM

It is always better to qualify welder without backing sothat we can take advantage for with or without backing

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