Weldable Primer WPS
Weldable Primer WPS
(OP)
If we are wanting to put a lite coat of weldable primer on the steel to prevent weathering, do we have to qualify a new WPS in order for this to be legal with AWS D1.1? The code seems to be fairly vague when it comes to this and does not say specifically no primer or how much is allowed, at least from what I can find.





RE: Weldable Primer WPS
RE: Weldable Primer WPS
RE: Weldable Primer WPS
RE: Weldable Primer WPS
RE: Weldable Primer WPS
RE: Weldable Primer WPS
RE: Weldable Primer WPS
We had a contractor in Malaysia request the use of it and I requested some basic tests be performed first.
Ran a few SMAW welds over a commercially available "weldable primer" and had internal porosity everywhere (nothing on surface).
Ran more tests and it was determined that maintaining a constant DFT was too hard to control - correct application and the welds were fine, overly thick DFT and the welds were hopeless.
Hope that helps,
Cheers,
DD
RE: Weldable Primer WPS