US 12,459,046 B2
Arc welding controlling method
Noriyuki Matsuoka, Osaka (JP); Masaru Kowa, Osaka (JP); Takamichi Komatsu, Osaka (JP); and Kimiya Sato, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Jun. 23, 2020, as Appl. No. 16/909,541.
Application 16/909,541 is a continuation of application No. PCT/JP2018/046682, filed on Dec. 19, 2018.
Claims priority of application No. 2018-009888 (JP), filed on Jan. 24, 2018.
Prior Publication US 2020/0316703 A1, Oct. 8, 2020
Int. Cl. B23K 9/09 (2006.01); B23K 9/095 (2006.01); B23K 9/173 (2006.01)
CPC B23K 9/09 (2013.01) [B23K 9/095 (2013.01); B23K 9/173 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An arc welding control method for controlling arc welding, the arc welding forming a plurality of scaly beads continuously arranged on a base material in a welding cycle, the welding cycle being a sum of an arc ON period and an arc OFF period, the arc ON period being a period during which a welding current flows to a welding wire, the arc OFF period being a period after the arc ON period and during which the welding current does not flow to the welding wire, the arc welding control method comprising:
setting an initial value of a welding condition for arc welding the base material;
forming the plurality of scaly beads in a predetermined welding section of the base material while moving a torch holding the welding wire in the predetermined welding section of the base material at a predetermined welding speed; and
while moving the torch, changing the arc ON period and the arc OFF period continuously of in accordance with any of a lapse time in the forming of the plurality of scaly beads, a distance from a welding start point in the predetermined welding section, or a welding teaching point position so as to satisfy a predetermined finish condition,
wherein:
the welding condition includes the arc ON period, the arc OFF period, and a plurality of welding parameters, the plurality of welding parameters including at least one of the welding current, the predetermined welding speed, or an interval between adjacent scaly beads among the plurality of scaly beads;
the arc ON period includes: a first short circuit welding period during which a feed of the welding wire is successively repeated alternately forward and backward to alternately repeat successively a state in which an arc is generated between the base material and the welding wire and a first state in which the base material and the welding wire cause a first short circuit; and a pulse welding period that follows the first short circuit welding period and during which the welding wire is fed forward at a constant wire feed speed and a peak current and a base current alternately flow successively to the welding wire to successively generate the arc between the base material and the welding wire; and
during the arc OFF period the welding wire is not fed.