| 摘要 |
PURPOSE:To obtain the chemical and mechanical properties equal to or better than the chemical and mechanical properties of a base metal by feeding an insert metallic strip toward the V vertex formed by the diametrally opposed surfaces to be joined of a metallic strip at the same speed, subjecting said strip to high-frequency heating simultaneously with the surfaces to be joined and press- welding said surfaces. CONSTITUTION:An insert metallic strip 8 slightly broader than the wall thickness of a steel strip 7 is fed from the V-shaped space formed of both end faces of the strip 7 toward a V vertex 4 at approximately the same speed. The strip 8 is press-welded between the end faces at the edge of the strip 7 at the vertex 4 and after passage through a looper 11, the strip 8 is pulled and moved by the strip 7. High-frequency current is induced on the surface of the insert metallic strip as well by the high-frequency current flowing the end faces at the edge of the strip 7 from the part near the power feed contactor to the V vertex, by which the metallic strip is heated. The material design independent from the base metal part is thus made possible and the properties required for the joint part are obtd. only by the adequate selection of the insert metal. |
