US 4,055,503 A · Lubricating powder and method of producing same and relatively slideable components

Abstract

A coating powder for relatively slideable parts consisting essentially of a mixture of about 80%-60% graphite and about 20%-40% of an unhardened epoxide-containing epoxy resin/hardener mixture. The coating powder is made by admixing an epoxy resin and a hardener to a uniform mixture at an elevated temperature at which the epoxy resin does not react with the hardener while in the molten state. The unhardened epoxy resin/hardener mixture is then ground into coarse particles and admixed with coarse particles of graphite and the mixture ground to a fine powder. The invention also includes machinery having at least one self-lubricated surface coated with said powder which has been heated after application to the surface to form a cross-linked thermoset polymer binding said graphite.

Claims5

Dependent claims

A process of making a lubricant powder consisting essentially of a mixture of about 80% to 60% by weight of graphite and about 20% to 40% by weight of a mixture of a hardener and an unhardened epoxide resin comprising:

a. mixing the hardener with molten unhardened epoxide resin at a temperature insufficient to react the hardener and epoxide resin, until a homogeneous mixture is formed;
b. cooling said homogeneous mixture to form a solid homogeneous mixture of said hardener and unhardened epoxide resin;
c. breaking up said cooled solid mixture;
d. mixing said broken solid mixture with coarse graphite particles;
and
e. grinding said graphite-containing mixture into particles of a maximum size of 200 micrometers.

3 more elements

Dependencies are inferred from the claim text.

Lubricating powder and method of producing same and relatively slideable components

Life of this patent

Lubricating powder and method of producing same and relatively slideable components

Life of this patent

Abstract

Claims5