Making of Bimetallic Semi-Finished Products for the Production of Elements for Joining Dissimilar Materials Using the Resistance Element Soldering

The contribution is devoted to the making of bimetallic semi-finished products for the production of elements, which are used to joining dissimilar materials, metal sheets to plastics, using the Resistance Element Soldering. During the making of bimetallic semi-finished products by gravity casting, defects occurred and, moreover, the proposed method of casting was not very productive. Therefore, centrifugal casting of bimetallic semi-finished products was proposed, which enables the production of a larger number of semi-products with higher quality in one casting cycle. The method was verified by preparing bimetallic semi-finished products Cu-Sn91Zn9 and Cu-Sn60Pb40. The non-destructive X-ray test proved the reliability of the centrifugal casting in the serial production of high quality bimetallic semi-finished products.