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by Shannon
(Valdosta, Ga)

When tungsten touches the molten weld pool, what pulls the contamination up onto the hot tungsten?


There are all kinds of physics going on in an arc and weld pool. I dont pretend to know exactly how it happens, but one thing is for sure....

molten aluminum definitely seems to want to jump on a tungsten electrode.

Steel does too but not quite as much as aluminum.

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