| 摘要 |
PROBLEM TO BE SOLVED: To provide a both-side welding method effective for obtaining a sound joint part by both-side welding, and to provide a weld structure formed by the method. SOLUTION: The both-side welding method performs arc-welding of a non-consumable electrode type after applying a penetration accelerator, which contains a metal oxide powder, to the front or rear side of a roughly I-shaped joint or a roughly T-shaped joint, which is made of a stainless steel material or a low-carbon steel material. In the both-side welding method, a penetration accelerator 4a is applied to one side of the front and rear sides of the joint and is dried, and then fusion welding is conducted to a penetration depth H1 within a specified range by feeding and melting a welding wire from the rear of the advancing direction of the welding. Next, a penetration accelerator 4b is applied to the other side of the front and rear sides of the remaining joint on the opposite side and is dried, and then fusion welding is conducted to a penetration depth H2 within a specified range by feeding and melting the welding wire from the rear of the advancing direction of the welding. COPYRIGHT: (C)2007,JPO&INPIT |
