Automatic arc-welding method

Details Automatic arc-welding method Automatic arc-welding method

B - Operations, Transporting

23

K

327/71

B23K 9/10 (2006.01) B23K 9/073 (2006.01) B23K 9/095 (2006.01) B23K 9/12 (2006.01)

Patent

CA 1302515

AUTOMATIC ARC-WELDING METHOD ABSTRACT OF THE DISCLOSURE An automatic arc-welding method, which comprises: when welding two objects to be welded together by means of a welding wire along a first groove formed between the objects to be welded on a first side thereof, 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; 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; and on the other hand, when weld- ing the objects to be welded together by means of the welding wire along a second groove formed on a second side of the objects to be welded, opposite to the first groove, continuously determining by calculation a target welding current and a target welding speed while taking into consideration the depth of penetration and the weld - 1 - bead in the first groove; thereby automatically controll- ing the welding current, the feeding rate of the welding wire and the welding speed on the basis of the respective target values thus determined.

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