Implantation of certain solid lubricants into certain metallic surfaces by mechanical inclusion
AssigneeMiracle Metals, Inc.
InventorPhilip O. Badger
Life of this patent
Estimating the term…
Abstract
A solid lubricant such as MoS.sub.2 is applied to certain carbon and stainless steels after surface voids have been produced in the material by one or two annealings before final cold working the material to finished size. The latter operation imbeds or includes the lubricant into the material and thereby provides a superior lubricated steel for piston rings, shaft, valve stem, spring, stranded wire, and the like applications. The technique involved may also employ corrosion inhibiting agents to increase resistance to corrosion of the steel as well as to impove its lubricity.
Claims13
A process of providing a lubricious surface for certain carbon and stainless steels for high wear applications wherein a length of the steel is reduced from an initial larger to a final smaller cross-sectional size by one or more cold workings, characterized by:
- preparing the surface of the steel including annealing the steel in order to form voids on the surface thereof;
- covering the surface of the steel by coating the same with micrometer sized particles of at least one inorganic solid lubricant;
- and subsequently cold working the steel after said coating to reduce the same to said final cross-sectional size, the temperatures during said coating and subsequent cold working being below the oxidation temperature of the lubricant.
Dependencies are inferred from the claim text.