| 摘要 |
PROBLEM TO BE SOLVED: To provide a stitch pulse welding method with which a wide weld bead can be formed. SOLUTION: In the stitch pulse welding method, after welding is performed by moving an arc welding torch T to a working position on an operation line L, while repeating re-welding in the next working position separated by a prescribed moving pitch, a weld bead is formed on a workpiece W by superimposing welding traces that are formed through the welding at respective working positions on one another. A welding track Kc including a working position Pn is formed in a prescribed region having a prescribed width in a direction orthogonal to an operation line direction Dr and the operation line L, and welding is performed while moving the tip end of the arc welding torch T along the welding track Kc. The welding track Kc is a circular or elliptical or spiral welding track and is formed in accordance with a pattern selected among predetermined track patterns. Since the welding traces are formed by the welding track Kc in respective working positions, a wide weld bead can be obtained. COPYRIGHT: (C)2009,JPO&INPIT
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