METHOD FOR EMBOSSING METAL PLATE

PROBLEM TO BE SOLVED: To provide a method for embossing a metal plate, capable of efficiently obtaining an embossed product on which high circular projections are arranged, by using only a pair of pressing metal molds, which consists of a punch having a plurality of projections and a die having a plurality of recesses corresponding to the projections, even when embossing a hard-to-form material, such as a stainless steel plate and a high-tensile-strength steel plate. SOLUTION: Before embossing a metal plate, a covering plate is superposed on the surface of the metal plate in the side to be brought into contact with the die. Then, in a state that the covering plate is superposed on the surface of the metal plate, the parts to be vertical wall parts of a plurality of circular projections are ironed, so that a plurality of circular projections are completed. COPYRIGHT: (C)2009,JPO&INPIT