| 摘要 |
PROBLEM TO BE SOLVED: To expand the range of the welding condition capable of preventing cracking in a weld zone, in a two-electrode arc welding method for high alloy steel, which carries out welding in an atmosphere of 100% inert gas by feeding two welding wires, which are mutually insulated, and by generating two adjacent arcs. SOLUTION: In the two-electrode arc welding method for high alloy steel, two welding wires P2, P3, each of which has a chromium equivalent and a nickel equivalent different from those of each other, are used. The total of feeding speeds of the two welding wires is set to such an appropriate value as to from a desired penetration. While the total of feeding speeds is fixed to the appropriate value, each of the feeding speeds of both welding wires is set so as to from a structure consisting of an austenite structure and a little of a ferrite structure in the weld zone. COPYRIGHT: (C)2007,JPO&INPIT |
