Electric heating – Metal heating – By arc
Patent
1988-07-14
1989-03-28
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21912422, 21913021, 21913771, B23K 912
Patent
active
048166413
ABSTRACT:
An automatic arc-welding method, which comprises, when welding two objects to be welded together by means of a welding wire along a groove formed between the objects to be welded, continuously determining by calculation a target welding current, with which a depth of penetration agrees with a target value thereof, on the basis of the root gap, the material of the welding wire and the like; continuously determining by calculation a target feeding rate of the welding wire, at which an extension length of the welding wire agrees with a target value thereof, on the basis of the welding current, the material of the welding wire and the like; and continuously determining by calculation a target welding speed, at which a height of the weld bead agrees with a target value thereof, on the basis of the feeding rate of the welding wire, the material of the welding wire, the root gap and the like; thereby automatically controlling the welding current, the feeding rate of the welding wire and the welding speed on the basis of the respective target values thus determined.
REFERENCES:
patent: 4532404 (1985-07-01), Biollot et al.
patent: 4591689 (1986-05-01), Brown et al.
patent: 4733051 (1988-03-01), Nadeau et al.
Nishi Yasuhiko
Sugitani Yuji
NKK Corporation
Shaw Clifford C.
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