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In weld surfacing, it is desirable to put the coating material in two or more passes rather than one pass. Why?

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In weld surfacing, it is desirable to put the coating material in two or more passes rather than one pass. Why?
posted Mar 25, 2018 by anonymous

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As the thickness of the weld increases, molten metal free flows away from the electrode, filling areas further away than thin layers, this is the primary reason why one should use coating material in passes (more then one passed to compensate this loss).

answer Mar 26, 2018 by Salil Agrawal
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