Apparatus for conducting smut-free welding

Details Apparatus for conducting smut-free welding Apparatus for conducting smut-free welding

1979-09-14

1982-02-23

Goldberg, Elliot A.

Electric heating

Metal heating

For bonding with pressure

219 99, B23K 920

Patent

active

043170200

ABSTRACT:
Method and apparatus for welding studs to a workpiece are provided. When studs are welded to workpieces using a draw-arc, stud-welding technique, a coating of smut is sometimes deposited on the workpiece around the welded end of the stud. This coating detracts from the appearance and if the workpiece is covered with coating material, such as paint, the smut must first be removed, requiring an extra operation. It has been found that the coating of smut will not be deposited, if, during the welding cycle, fluid is carefully deposited on the weld area around the end of the stud where the weld occurs. This fluid consists of a small volume of low pressure air and an anti-smut liquid.

REFERENCES:
patent: 3096429 (1963-07-01), Mowry
patent: 3790740 (1974-02-01), Shoup

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