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Anonymous Poster

welding defects

06/09/2008 11:12 PM

pore produecd during tig welding when matel plate 15dcv6 2.5 mm thickness in clyinderycal shape pore develops bothe the side of grove ,and same plate when weld the butt joint prallel position no defect produced.

please tell the presure of gas same procedure

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Join Date: Mar 2008
Location: USA Soviet Socialist Dictatorship of Cook County& Illinois
Posts: 207
Good Answers: 15
#1

Re: welding defects

06/11/2008 9:34 AM

Understanding you may have a language problem, can you try to clarify this inquiry? I have heard of this material and am looking for a source but your problem, as stated, is not clear enough to give you an answer. It sounds like you are seeing some sort of defect on a longitudinal seam and not on a circumferential seam. This makes no sense unless there is a defect in the material and the grain direction is the culprit. If the material is rotated 90 degrees before forming (changing grain direction) does the same problem occur? Grain direction is the direction of the rolling of the plate. Usually the grain is parallel to the long length of the plate from which the parts are made is the rolling direction as you may imagine. If it is grain direction related, when you make the change I suggested, the problem should move from the longitudinal to the circumferential seam.

Try to describe the defect a little more clearly.

Hope this helps or gets you started thinking.

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Anonymous Poster
#2

Re: welding defects

06/17/2008 12:53 AM

when we rolled the flat plate into clyinderical shape after that when we weld with tig welding thenwe obseve the gas pore produecd 15dcv6 2.5mm thickness pore develops the grove both side.

in other hand if we weld the same plate in flat postion/from but that time no gas pore develops

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