Quote:
Originally Posted by BigD9146gt
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island911: Yes, not the welds... however, i worked for a shop that wouldn't touch aluminum rims for this reason. Heat, regardless of where the failure occurs, will affect the finished product. Aluminums' heat coefficient is unreal. Even if you've got a machine doing your dirty work, your going to have to heat treat the part. Now your going to respond with "what shop?"... ....
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Well, no. I'm
going to respond with; I'm an engineer (mech) and have very methodically mapped the HAZ of welded aluminum. (HAZ -> heat affected zone) It simply isn't
anywhere near large enough to cause problems in the areas which cracked.
Edit:
See also:
http://www.esabna.com/us/en/education/knowledge/qa/Heat-Affected-Zone-of-Arc-Welded-Aluminum-Alloys.cfm