Method and apparatus for conducting dripless, smut-free stud wel

Details Method and apparatus for conducting dripless, smut-free stud wel Method and apparatus for conducting dripless, smut-free stud wel

1987-09-14

1989-02-14

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 99, B23K 920

Patent

active

048048208

ABSTRACT:
A method and apparatus are provided for welding a stud to a workpiece and maintaining the area around the weld substantially free of smut. The existence of the smut detracts from the appearance of the workpiece and, if the workpiece is to be painted or otherwise covered with a coating material, the smut must first be removed. A spark shield assembly has an outer end which is placed in contact with the workpiece around the stud. Anti-smut liquid is first deposited from the assembly on the weld area around the end of the stud where the weld occurs thereby to eliminate the deposit of a coating of smut. Air is then directed through the spark shield assembly toward the outer end thereof after the weld is completed to aid in removing the anti-smut liquid from the spark shield assembly.

REFERENCES:
patent: 4201904 (1980-05-01), Weidman
patent: 4267426 (1981-05-01), Mallett
patent: 4284870 (1981-08-01), Ettinger
patent: 4306137 (1981-12-01), Shoup et al.
patent: 4317020 (1982-02-01), Shoup
patent: 4442336 (1984-04-01), Shoup
patent: 4513193 (1985-04-01), Ettinger

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