Does the welding defect term, "whiskers", correlate with any of the current welding defect terminology (i.e. concavity, convexity, root surface contour, etc.)?
swephnsyimf
Whiskers are short lengths of weld electrode wire, visible on the top or bottom surface of the weld or contained within the weld. On a radiograph they appear as light, "wire like" indications.
Hope this answers your question
Marshall
Thank you for your response.
An example might come in a GMAW open root weld that the wire shot through and fuesed to the back side..
There may be full fusion on the inside edges of that root, but the discontinuity (whisker) may be a defect (reject) if it exceeds the code criteria set forth.. Whatever that code may be.
In the situation above I think "root surface contour" defect would apply well enough if it were unacceptable and you diddn't want to type "whiskers" on your report :)
Edit:
AWS D1.1 has some language you might use;
Visual Inspection Table 6.1 (4) "Weld profiles" points to clause 5.24
5.24.4 "...All welds shall have a gradual transition to the plane of the base-metal surfaces..."
This may be an example of how to define whiskers in solid technical terms.
The answer is that it is not a defined term per AWS A3.0 standard terms and definitions.
It isn't even listed as a non-standard term, but the definition provided in this thread is pretty good!
Best regards - Al
Thanks for the support, Al. As always, it is sincerely appreciated.
if it was on a repair it could be the thined out root edges that was not consumed in the new root, or simply cold wire at the root surface
hi all, being a current student. how would you, or what would you do as precautions and steps to keep from having this defect?
On an open root don't travel too fast when you are welding. You get whiskers when you travel ahead of the puddle and the wire shoots through.
Forum
