PRESS MOLD FOR SHEET METAL FORMING, METHOD OF TREATING PRESS MOLD SURFACE, AND PROCESS FOR MANUFACTURING AUTOMOBILE BODY

摘要

A press die and a processing method of the press die surface, and a manufacturing method of a vehicle body of an automobile, are provided capable of maintaining a high non-defective product rate of works after press processing, even in a case in which foreign matter such as iron filings and the like have adhered to a die surface. A press die for sheet metal forming 1 of the present invention has a multitude of concave portions 3 on a die surface 2, and has a roughness (Ry) of a die surface 2 on which the multitude of concave portions 3 has been formed of 30 to 38 µm.