MANUFACTURE OF POSITIVE ELECTRODE CAN FOR CELL

摘要

PURPOSE:To prevent the occurrence of burrs after punching by putting R suitable for the thickness of a metal thin plate to the corner section of a die punching the metal thin plate for a positive electrode can. CONSTITUTION:A steel plate or a stainless steel plate with the thickness of about 0.15-0.35mm is formed into a positive electrode can via the punching process by a mold punch P and a die D. The R of the punching corner section of the die D is made 3-2 times the thickness of the plate to be punched, thereby burrs rarely occur on the punch section. This fact is based on the experimentally verified results on Rs with several sizes against plates with several thicknesses.