Requirement for flush weld

[runemark]

Hello!
I have a problem at work regarding a bevel butt-weld that is to be flush. We have received a complaint about the surface finish of the weld since there are two paralell welds and there is a "ditch" between the two that the customer argues that since the weld is to be flushed the "ditch" shall be removed. We consider the "ditch" to be of cosmetic value and not to be of any concern regarding the strength of the component.

Does anyone have any information about the requirements of flush welds?

Best regards!

 

[Cockroach]

Cap them during the welding process and grind for flush profile, thus imparting the surface finish.

Regards,
Cockroach

 

[dhengr]

Runemark:
The customer is always right. What ever happened to that thinking in delivering our designs and products? Figure out what the customer wants, give it to them, and charge accordingly. Fill the groove btwn. the two welds, grind it (machine it) flush, and polish it if that’s what they want, and charge for the extra work. These kinds of things are always subject to the interpretation of the parties, unless the specs./contract explicitly spells it out. You haven’t given anywhere near enough info. about the actual design, stresses or detail for anyone to make a determination about the “ditch” being cosmetic, or a serious stress raiser. If it’s not a full penetration weld, with the root pass back gouged and rewelded, and ground smooth, the root will likely be a stress raiser. Otherwise, your “ditch” might be a stress raiser on the surface, just as an undercut might be. If the primary stresses are high and are perpendicular to the weld, or high cycle, there are probably good engineering (fatigue) reasons for wanting a smooth welded surface. If it is strictly a cosmetic issue with the customer, then they should expect to pay for that extra work. And, there must be some discussions of the pros and cons, and the costs involved.

 

[fabtank]

I am curious why two butt welds are so close together to form a "ditch". Do you have a sketch?

If the welds were specified to be ground flush then they should have been ground flush, even if only for cosmetic reasons.

 

[Tmoose]

what weld symbol and notes appear on the drawing?