Micro-texture piston ring and machining method

Abstract

The invention discloses a micro-texture piston ring and a machining method, and relates to the field of piston ring-cylinder sleeve systems. The micro-texture piston ring comprises a piston ring main body and a composite micro-texture, wherein the composite micro-texture is arranged on the peripheral surface of the piston ring main body; the composite micro-texture comprises sinusoidal groove micro-textures and circular pit micro-textures; the sinusoidal groove micro-textures are distributed along the whole peripheral surface of the piston ring main body, and the circular pit micro-textures are also arranged on the peripheral surface of the piston ring main body along the wave crest and wave trough positions of the sinusoidal groove micro-textures. The composite micro-texture on the surface of the piston ring can store oil and provide secondary lubrication; and meanwhile, abrasive dust and abrasive particles can be stored, so that secondary damages to the surfaces of the piston ring and a cylinder sleeve caused by abrasive dust are effectively avoided, the service life of the piston ring can be prolonged by machining the micro-texture on the surface of the piston ring, and abrasion of the piston ring is reduced, and thus, the comprehensive performance and the use efficiency of the oil cylinder are improved, and the risk of oil leakage is reduced.

Description

technical field [0001] The invention specifically relates to a micro-textured piston ring and a processing method thereof, belonging to the technical field of piston ring-cylinder liner systems. Background technique [0002] The piston ring is an important part of the cylinder, which is responsible for sealing, heat conduction, oil control and support when the cylinder is working. During the working process of the piston, the environment faced by the piston ring is very harsh. On the one hand, the severe friction between the piston ring and the cylinder liner will easily produce scratches on the inner wall of the cylinder liner and the surface of the piston ring, causing the piston On the other hand, the piston ring is subjected to high-pressure impact and corrosion, and is faced with a complex and changeable lubrication state, which is easily damaged and broken, resulting in leakage and making the machine cannot work normally. Under the condition of high frequency and high...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of wear between the piston ring and the cylinder liner in the prior art, the present invention provides a micro-textured piston ring and a processing method, in which grooves and pits are processed on the surface of the piston ring. structure to improve the lubrication state between the piston ring and the cylinder liner friction pair, and improve the friction characteristics between the two contact surfaces

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