New trends in the bending of coated sheet metal

Abstract

The article deals with new experimental equipment for effective test of adhesion for selected coating STEEL, applied cold on the coated sheet metal with Al (aluminium). In the experiments with new test equipment it was shown that for bending radiuses from R11 to R35 there is a change of deposited coating STEEL from original coating Al and this coating was part of test sheet metal of thickness 1.5mm. Steel coating has significant anticorrosive properties and it is resistant for main oxidizing agents such as acids, alkalis, salt vapours etc. It is very simple to apply to metallic and non-metallic surfaces. Broad application is in automotive industry to modify the surfaces of block vehicle, car-body repairs, welds needing protection, in heating industry (i.e. boilers), in air condition with heat exchangers and in shipping industry. In the next stage of investigation, technological process was developed, which allowed the increase of adhesion of coating STEEL for bending up to or maximum 180° (shape U). Result of a new technology is documented in article. Experiments were implemented in cooperation with the Masaryk University in Brno, Czech Republic.