Method and device for determining the temperature at a spot-weld

Details Method and device for determining the temperature at a spot-weld Method and device for determining the temperature at a spot-weld

1994-01-13

1995-03-21

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

B23K 1125

Patent

active

053998278

ABSTRACT:
The temperature is determined at a spot weld. The spot weld is between parts to be welded to one another. The parts are formed of a first metal and the spot weld is made with an electrode of a second metal placed in contact with the parts. The thermoelectric voltage between parts and the electrode is measured and the temperature is determined from the thermoelectric voltage measured in the measuring step. A device for determining the temperature includes a voltmeter connected between the parts to be welded and the electrode. The temperture determination is utilized in assessing the quality of spot-welded joints in automated manufacture, for example in the automobile industry.

REFERENCES:
patent: 3800119 (1974-03-01), Kuroda et al.
Welding Journal No. 5 (Alcini), May 1990, pp. 177-180, "Experimental Measurement of Liquid Nugget Heat . . . ".
DVS-Merkblatter Widerstandsschweisstechnik, pp. 36-43, "Electrodes for Resistance Welding Technique".
Das Elektrische Widerstandsschweissen, Walter Brunst, 1952, pp. 80-92, "Electric Resistance Welding".

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