導電型制振鋼板のスポット溶接性

抄録

The improvement in spot weldability of a vibration damping steel sheet has been studied by mixing iron particles in the no-conductive resin film sandwiched by steel sheets. The influences of the particle size and the volume fraction has been investigated in relation to the occurrence of pinholes and micro-sparks. These defects are eliminated by using mixture of 3 volume percent particles where the particle diameter is 1.5 times the film thickness. The vibration damping steel sheet produced under these conditions shows good spot weldability without any bypass circuits, as well as high damping property.