Re: Proper Weld Bead -- The Welding Forum

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Subject: Re: Proper Weld Bead

Author:
d

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Date Posted: 19:27:06 08/25/02 Sun
In reply to: Aaron 's message, "Proper Weld Bead" on 21:12:05 08/22/02 Thu

Aaron,
I believe the real issue you are trying to address is the quality of your weld. Your primary focus should be on penetration and fusion. At the level you're apparently working the strength issues relating to bead profile would be minor. The easiest way to evaluate your welds is to make some destructive tests; break the pieces apart. The AWS publishes standards that critical welds must attain; by looking into these standards and how they test welds at laboratories you can come up with a pretty good evaluation of your welds on your own.

Your dad's welder is a constant current welder, and you are using a constant voltage machine. Even though the dynamics in the molten weld pool would probably be similar due to the thermodynamic property of the flux you are both using, you two are using different processes. The physics going on inside the arc is not the same with the two welders. You are probably runnig straight polarity (DCEN) and your dad is most likely rinning DCEP... dont expect identical results.

If your problem is actually poor fusion it can be an issue with technique- which has a lot to do with the meager power of any of these 115 volt welders. Is that the trouble?

Regards
d

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