In general
Welders performance tests are governed by codes and prepared in accordance with WPS suitable for the work to be undertaken. Colour change might be suggesting some changes in electrical characteristics, but it certainly is not a base sufficient enough to reject the weld. Kindly apply the requisite tests for the weld in question if visually you are satisfied with the weld.
The acceptance criteria for weld performance test shall apply in deciding the disposition of this weld and the ability of the welder to fabricate a sound weld that meets the requirements of the applicable code.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sedef pala
Sent: 26 August 2011 07:44 PM
To: materials-welding
Subject: [MW:12313] change in welding color in Cr Mo V steel
Hi to Everybody,
Attached i included two photos from welding (material Cr Mo V steel, process TIG ). As you can see from picture there is change in color of the weld.Visualy my interpretation is that welder increaed welding speed (therefore heat input was decreased), in copper colored area he welded more faster and made weld puddles more thick.Where on left side color of the weld pool looks good(similar to base material) and paddles are in range.
My question is " if the weld puddles looks thicker and color is like copper can it be rejected, especially in welders skill test"?
Thanks in advance for any opinion.
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
No comments:
Post a Comment