Method for welding and apparatus therefor
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United States of America Patent
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Oct 19, 1999
Grant Date -
N/A
app pub date -
Dec 15, 1997
filing date -
Dec 27, 1996
priority date (Note) -
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Abstract
The present invention relates to a method for welding comprising the steps of: contacting a plurality of workpieces to be welded having different heat capacities so as to form a boundary portion therebetween; placing a welding electrode in proximity to the boundary portion; generating an arc discharge between the welding electrode and the boundary portion; and supplying gas to the boundary portion, wherein more gas being supplied to one of the workpieces having a lower heat capacity than another workpiece having a higher heat capacity.
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