Piston ring

Abstract

The invention discloses a piston ring, which comprises the following compositions in percentage by mass: 4-6% of carbon fiber powder, 13-17% of glass fiber, 9-11% of copper powder, 2-3% of molybdenum disulfide, and the balance of polytetrafluoroethylene powder. The piston ring disclosed by the invention has the advantages that: as the carbon fiber is adopted for replacing traditional graphite, as a special fiber consisting of carbon elements, the carbon fiber, besides having the properties of high temperature resistance, friction resistance, electric conduction, heat conduction and corrosion resistance and the like of common carbon materials, also has significant anisotropy, and shows a high strength and a small specific gravity along the axial direction of the fiber, therefore, the carbon fiber has a high specific strength, and plays a significant role in increasing the strength of the piston ring, the strength is more than 150 kg/cm2, and the resisted high temperature can reach more than 300 DEG C.

Description

technical field [0001] The invention relates to a piston ring. Background technique [0002] Piston rings are ring-shaped parts used to be embedded in piston grooves, and are widely used in various power machines. The functions of the piston ring include sealing, regulating oil, heat conduction, and guiding, so the wear resistance and elasticity of its material are the most important. Various advanced surface treatment methods are usually used, such as solvent injection, electroplating, chrome plating, gas nitriding, physical deposition, surface coating, zinc-manganese phosphating treatment, etc., to greatly improve the performance of piston rings, but the treatment process is complicated. Difficulty, high technical requirements, not easy to be mastered. Contents of the invention [0003] Purpose of the invention: In view of the above problems, the purpose of the invention is to provide a piston ring, which improves its wear resistance and elasticity through material imp...

AI Technical Summary

Problems solved by technology

Various advanced surface treatment methods are usually used, such as solvent injection, electroplating, chrome plating, gas nitriding, physical deposition, surface coating, zinc-manganese phosphating treatment, etc., to greatly improve the performance of piston rings, but the treatment process is complicated. Difficult, high technical requirements, not easy to master