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Re: Aluminum weld cracking
Re: Aluminum weld cracking -- kamranwasti	Post Reply	Top of thread	Forum

Posted by: Kelly Bramble ® 03/19/2007, 21:11:01 Author Profile eMail author Edit

I suspect pre-heating is still the issue. You should preheat the aluminum and the temperature should not exceed 230 F. Try a temperature gauge to prevent overheating. Additionally, tack weld at the beginning and end of the area being welded to help to stabilize the material during preheating. If this doesn't work, add a tack weld in the middle before preheating. If one piece of the material is thin and one thick, preheat the thick piece of aluminum when welding it to the thin piece. If you have cold lapping, try using run-on and run-off tabs for the weld bead. I think you just need to develop the process for your particular configuration. Modified by Kelly Bramble at Mon, Mar 19, 2007, 21:12:08

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