Patent ID: 7879772
Filing Date: 2011-02-01
Classification: C10M,C10N

Abstract:
1. A process for cold plastic working of metallic materials which comprises forming on the surface of a metallic material a lubricating coating containing, in an amount of 1% by mass or more, particles each of which particles consists of a water sparingly soluble or water insoluble polyvalent metal salt of phosphoric acid as a nucleus and a coating of a metallic soap of the polyvalent metal coating the surface of the nucleus, the polyvalent metal being at least one metal selected from Zn, Fe, Mn, Ni, Co, Mg, Ba, Al and Sn, the metallic soap being formed by reaction of the polyvalent metal salt of phosphoric acid with an alkali metal salt, ammonium salt or water soluble ester of a fatty acid, said particles being hereinafter called two-layer particles, or particles each of which consists of each of the two-layer particles and a coating of an alkali metal salt, ammonium salt or water soluble ester of a fatty acid coating the surface of the two-layer particle, said particles being hereinafter called three-layer particles, and subjecting the resulting metallic material to cold plastic working.