Abstract
In late years, the application of the surface modification is paid attention as a means corresponding to achieve making of the material high performance and environmental harmony in each industry. Especially, application to the press metal mold industry is highest the share, especially, to improve lubricity and abrasion resistance, the coating of a hard film is given. However, when the press is continued tens of thousands of times, the damage of the goodness generates flaking off of the film in the starting point. This becomes a quality decrease of the product, in case of being longevity of the metal mold. Then, in this research, The improvement of the film adhesion was attempted by giving the middle processing to the metal mold mother material.
