METHOD FOR FORMING SOLID FILM LUBRICANT

摘要

PURPOSE: A method which forms a uniformed film irrespective of the shape of parts as a binder such as resin is not being used and forms a solid film lubricant having superior life characteristics is provided. CONSTITUTION: In a method for forming a solid film lubricant on the surface of parts having certain shapes, the method for forming the solid film lubricant comprises the steps of preparing a medium having certain size and shape; covering lubricant powder on the medium; and coating the lubricant powder on the surface of the parts by physically contacting the lubricant powder covered medium with the parts, wherein the physical contact of the lubricant powder covered medium with the parts is made by mechanical force such as rotation, vibration, impact and friction, the lubricant is one or more materials selected from the group consisting of molybdenum disulfide, tungsten disulfide, graphite, boron nitride, and polytetrafluoroethylene, an organic or inorganic binder together with the lubricant powder are covered on the medium in the step of covering lubricant powder on the medium, the method further comprises the step of drying the parts dipped into the diluted solution after dipping the lubricant powder coated parts into a diluted solution of an organic or inorganic compound, the diluted solution of the organic or inorganic compound is prepared by diluting 0.1 to 10 weight parts of an organic or inorganic compound into 100 weight parts of solvent, the method further comprises the step of forming one or more layers of an intermediate layer on the surface of the parts to improve cohesiveness with the lubricant before contacting the parts with the lubricant covered medium, the intermediate layer is consisted of one or more materials selected from the group consisting of silver, copper, tin, lead, gold, zinc, cadmium or alloy thereof, solid lubricant, and a composite alloy thereof, the intermediate layer is formed by one or more processes selected from the group consisting of electroplating, chemical plating, vacuum plating, spray coating deposition, and physicochemical deposition, and the method further comprises the step of increasing ductility of the intermediate layer by heat treating the intermediate layer to a temperature of 150 to 500 deg.C after forming the intermediate layer.