PROCEDIMIENTO DE ELABORACION DE UN MATERIAL PARA LA FABRICACION DE ENVASES METALICOS,ESPECIALMENTE LATAS DE CONSERVA,A PARTIR DE CHAPAS DE ACERO DULCE

摘要

The invention relates to mild steel sheet, having deposited on at least one of its major faces a sub-layer of tin in an amount of 0.1 to 1.05 g/l and a composite coating containing chronmium and chronmium oxide. The content of chromium in the composite coating is more than 5 mu g/cm2 while the content of chromium oxide in the coating, expressed in terms of chromium, is less than 2.5 mu g/cm2. The resultant sheets give improved welds when joined by electric welding and are particularly suited for making can bodies for food cans.