Abstract: A method for tableting surface treatment of a tableting punch or die includes provisional filming and beam irradiation steps. In the provisional filming step, a tableting surface of a base metal material 1 is subjected to shot peening using different type metal grains 2 made of a different type of metal for adhesion, or the different type metal grains 2 are adhered by a binder whereby forming a different type metal film 3 on the surface. In the beam irradiation step, after the different type metal film 3 is formed, the surface is irradiated with an electron beam 4 or laser beam as energy beam to combine the different type metal film 3 and the base metal material 1.

Abstract: A metal surface treatment method includes: a shot-peening step of shot-peening a dissimilar metal particle (2) on a surface of a base metal (1), the dissimilar metal particle (2) being a metal particle different from the base metal (1), to provide a dissimilar metal film (3) on the surface of the base metal (1); and an electron beam irradiation step of irradiating the surface of the base metal (1) with an electron beam (4), the surface of the base metal (1) having been provided with the dissimilar metal film (3) in the shot-peening step, to bond the dissimilar metal film (3) and the base metal (1) together.

Abstract: An object of the Invention is to provide a punch or die for tabletting to be excellent durability and releasability. When a coating layer is provided on a surface, the coating layer is yet securely prevented from detachment. In the punch or die for tabletting, the tablet-forming surface layer 5 contains a base metal and a hardening metal in a fused state which is different from the base metal, and a hardening metal content is incremental from the base metal toward the tablet-forming surface layer 5. The hardening metal contains at least any one of W, C, B, Ti, N, and Cr. Furthermore, in the punch or die for tabletting, the tablet-forming surface layer 5 ranges between 0.1 ?m and 5 ?m in terms of arithmetical mean roughness Ra of the surface.