US 12,409,503 B2
Method for welding half coil of reactor
Yuchan Kim, Changwon-si (KR); and Taewan Kim, Changwon-si (KR)
Assigned to BESTFA CO., LTD., Changwon-si (KR)
Filed by Yuchan Kim, Changwon-si (KR); and Taewan Kim, Changwon-si (KR)
Filed on Aug. 4, 2022, as Appl. No. 17/881,477.
Claims priority of application No. 10-2021-0102436 (KR), filed on Aug. 4, 2021.
Prior Publication US 2023/0045091 A1, Feb. 9, 2023
Int. Cl. B23K 9/00 (2006.01); B23K 9/173 (2006.01); B23K 9/235 (2006.01); B23K 35/38 (2006.01)
CPC B23K 9/0026 (2013.01) [B23K 9/173 (2013.01); B23K 9/235 (2013.01); B23K 35/383 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method of welding a half coil of a reactor, comprising:
a temporarily welding step of temporarily welding a half coil onto a circumferential surface of a reactor body; and
a gas metal arc welding (GMAW) step of performing the GMAW on the half coil after the temporary welding is finished,
wherein the GMAW step is to perform welding to prevent a gap from forming between the half coil and the reactor body using the GMAW which supplies a wire of the same material as the reactor body using an automatic welding machine,
wherein the gas metal arc welding (GMAW) is performed while performing a weaving operation at a constant width using a welding torch, and welding is performed while performing the weaving operation in a radial direction of the half coil, and
wherein the weaving operation provides dwell time in a state in which the welding torch becomes the closest to the half coil to increase a formation amount of back beads on an opposite side of the GMAW, and the dwell time is between 0.1 and 0.5 seconds.