Re: [MW:6504] RE: 6492] Welder Qualification and reinforcement

Hi

 

WQT or PQR thickness ranges ,

 

1) based on the theoretical throat values of weld not on the actual throat

 

2) Since two welders qualified to weld up to 20 mm thick , they can very well allowed to weld together on 25 mm thick plate

 

Rgds,

 

K.Babu

Singapore

 

----- Original Message -----

From: PRASANNA

To: materials-welding@googlegroups.com

Sent: Sunday, August 15, 2010 2:09 AM

Subject: [MW:6497] RE: 6492] Welder Qualification and reinforcement

Hi,

 

1.As per my view reinforcement is a form of weld deposition where there no fusion with the base metal, so the reinforcement cannot be taken in consideration during the welder qualification, then root penetration is not an variable which is mentioned in the welder qualification, which is left to the designer choice.

 

2.We cannot weld 25 mm plate using 2 welders, as they were qualified to weld 20 mm full welding only, for welding 25 mm plate 1 welder qualified up to 20 mm can be used whereas the 2^nd welder must be qualified for welding the repair welding.

 

Regards,

Prasanna.R.U.

 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Ather .
Sent: 14 August 2010 13:35
To: materials-welding@googlegroups.com
Subject: [MW:6492] Welder Qualification and reinforcement

 

Hi Guys,

 

1) I wonder why we will not consider the reinforcement and Root penetration in welder qualification thickness range..? as this is also a form of weld deposition.

 

2) Can we weld a 25 mm thick plate using 2 welders each is qualified to weld 20mm.Welding code is AWS D 1.1

 

Hope to have your helpful answers.

 

Thanks & Regards,

Ather

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