Apparatus and method for monitoring weld quality

Details Apparatus and method for monitoring weld quality Apparatus and method for monitoring weld quality

1991-02-15

1992-01-14

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

B23K 1125

Patent

active

050813382

ABSTRACT:
An apparatus and method for monitoring weld quality and for establishing a proper amount of weld energy and the upper and lower limits of the proper weld energy to be supplied by a precision resistance welding apparatus in order to produce acceptable welds. In the present apparatus and method the difference between the change in voltage and current supplied to a test weld is compared to a reference weld and this difference is used to obtain the upper and lower limits of the proper amount of energy to be supplied by the welder in a production context.

REFERENCES:
patent: 3389239 (1968-06-01), Treppa et al.
patent: 4449028 (1984-05-01), Buxton
patent: 4963830 (1990-10-01), Roth et al.

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