METHOD FOR PLATING METAL MOLD FOR FORMING GLASS

摘要

PROBLEM TO BE SOLVED: To surely remove microbubbles and gas pockets and to form a plating film which is good and uniform by forming a plating layer on the surface of a metal mold while oscillating the metal mold immersed in a plating liquid. SOLUTION: A plunger P consisting of stainless steel is held inclined in such a manner that all of the surfaces of a face forming surface f and skirt forming surfaces of constituting flanks are preferably not paralleled to a horizontal surface and the plunger is fixed in this state to the front end of a supporting arm 11 by means of a bolt. The arm 11 hanging the plunger P is moved above a plating bath tank 10 by a hoist and is then lowered to fit both ends of a shat 18 of the supporting arm 11 into the grooves of receiving rails 19. The plunger P is then immersed in the inclined state into the plating liquid. While the plunger P is oscillated by driving a motor M, its surface is plated. The plating film is free from plating pits and plating unevenness and the metal mold sufficiently applicable to forming of high-grade glass products is obtained.