Control method of resistance welding

Details Control method of resistance welding Control method of resistance welding

1985-09-20

1987-01-06

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 911, 219110, B23K 1124

Patent

active

046348280

ABSTRACT:
A control method of resistance welding for controlling weld conditions, such as welding current and welding time, in response to a change in material of weldments, which comprises the steps of detecting the local lowest value of resistance between electrode tips appearing in an initial welding period, comparing the detected lowest value with a plurality of reference resistance values preset correspondingly to materials of weldments of different sorts and divided into plural classes to determine the material of a weldment under process, and changing the weld conditions, such as welding current and welding time, depending upon the determined material.

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