Measuring proximity of metal to an arc welding torch

Details Measuring proximity of metal to an arc welding torch Measuring proximity of metal to an arc welding torch

1984-01-13

1985-03-26

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21912403, B23K 912

Patent

active

045075417

ABSTRACT:
Apparatus for measuring the distance between an electric welding torch and a workpiece especially useful with an aluminum workpiece. A nonconsumable electrode is mounted adjacent the consumable electrode of the welding torch with the nonconsumable electrode electrically isolated from the consumable electrode. A power supply connected to the consumable electrode provides an auxiliary arc and develops a consumable electrode voltage proportional to the distance between the torch and the workpiece. The consumable electrode voltage can be used to develop signals which guide the torch along a groove in the workpiece.

REFERENCES:
patent: 4249061 (1981-02-01), Puschner
patent: 4410786 (1983-10-01), Cloos
patent: 4410787 (1983-10-01), Kremers et al.
patent: 4449030 (1984-05-01), Blomdahl

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