PRESS FORMING DIE, AND METHOD OF MANUFACTURING PRESS FORMING DIE PROTECTION FILM

摘要

A press-forming mold has a protective film for preventing seizing during press-forming formed on at least a forming surface that comes into contact with a formed body. The protective film is formed by PVD. An arbitrary selection section extracted from the surface of the protective film is divided into a plurality of individual sections; and, when the gradient of the surface at the n th division point is represented by (dZn/dXn), taking N to represent the number of divisions, the root-mean-square R”q calculated by the following numerical expression is no greater than 0.032. R ” q = 1 N ˆ‘ n = 1 N dZ n dX n 2 It is thereby possible to improve the seizing resistance of a press-forming mold having a protective film formed by PVD.