| abstract |
(57) [Summary] [Problem] A highly lubricious plastic having a specific film structure using a coating type metal plastic working aqueous lubricant which can be applied to various metal materials and does not require chemical conversion treatment. A metal material for processing and a method for manufacturing the same are provided. The thickness is 0.1 to 1 located on the interface side with the metal. A base layer mainly composed of an inorganic compound having a thickness of 5.0 μm, and a lubricant layer mainly composed of a lubricant having a thickness of 0.1 to 10.0 μm located on the surface side, and a layer of lubricant layer / base layer It is a metal material for plastic working provided with an inclined two-layer lubricating layer having a thickness ratio of 0.2 to 3.0. The inorganic compound is preferably a phosphate, a sulfate, a borate, a silicate, a molybdate, a tungstate, or the like, and the lubricant is a metal soap, a wax, polytetrafluoroethylene, molybdenum disulfide, graphite, or the like. preferable. Further, the metal material is iron, steel, stainless steel, or the like. The above-mentioned inclined two-layer lubricating layer can be formed by bringing an aqueous treatment liquid containing an inorganic compound and a lubricant as main components into contact with the surface of the metal material, and then drying. |