METHOD FOR HEAT TREATING METALLIC STRIP MATERIAL

摘要

A method for heat treating metallic strip stock in cylindrical form by drawing the strip stock through a funnel-shaped element and then through a heated tube, characterized in that a protective sheet is passed through the heated tube along with the metallic strip stock to be heat treated such that it encircles and envelops the cylindrical form to be heat treated and prevents damage to its outer surface due to frictional drag between the heated tube and the cylindrical form passing therethrough.