| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that the known welding of an expand metal cannot utilize the mechanical characteristics thereof without deforming the original mesh shape, in other words, losses of the mechanical properties of a base material are large because warp and distortion of a metal plate caused by the thermal effect of the resistive heat generation and mesh crush of the expand metal are large. SOLUTION: An expand metal constituted by engaging slender steel members in a mesh with each other overlaps a metal plate, and an overlapped projection-shaped contact part is held between a pair of electrodes. When the welding current of large capacity is made to run from a capacitor power supply between the electrodes to integrate the projection-shaped contact part, the projection welding is performed while the mesh model height h of the expand metal after the welding is within 60 to 85% of the mesh height H of the expand metal before the welding. COPYRIGHT: (C)2006,JPO&NCIPI |
