Turbocharger sealing ring subjected to laser surface texturing and machining method

Abstract

The invention discloses a turbocharger sealing ring subjected to laser surface texturing and a machining method. After laser surface texturing, arc-shaped micro-concave cavities different in diameter and depth are formed in the left end face, the right end face and the inner circle surface of the turbocharger sealing ring and are distributed densely in a well-arranged manner. The machining method of the turbocharger sealing ring comprises the following steps that a surface fluid lubrication theoretical model of the turbocharger sealing ring is built to determine the diameters, depths and area occupancy rates of the arc-shaped micro-concave cavities in the left end face, the right end face and the inner circle surface with the optimal lubrication friction reduction effect through numerical calculation; and then a diode pumping Nd:YAG laser device is selected, under a laser machining graphic software interface, the geometrical parameters and distribution state of the arc-shaped micro-concave cavities are input, and laser surface texturing machining is carried out on the left end face, the right end face and the inner circle surface of the turbocharger sealing ring through a single pulse same-point interval repeated machining technology.

Description

technical field [0001] The invention relates to the technical field of mechanical seals, in particular to a turbocharger sealing ring with a laser surface texture and a processing method thereof. Background technique [0002] The turbocharger sealing ring is to prevent the lubricating oil of the bearing system from entering the flow part of the supercharger, and prevent the air of the compressor and the exhaust gas at the turbine end from entering the lubricating chamber of the supercharger, which is the key to ensure the normal operation of the turbocharger One of the parts. [0003] Existing turbocharger seal rings are attached Figure 7 , 8 As shown, the left and right end surfaces and the inner circle of the turbocharger sealing ring 1 are smooth surfaces. The turbocharger seal ring not only forms a friction pair with the high-speed rotating turbine rotor or the ring groove at the seal sleeve, but is also affected by the axial series movement of the ring groove. In ad...

AI Technical Summary

Problems solved by technology

In the traditional sense, the surface of the friction pair is required to be as smooth as possible. With the in-depth study of micro-rough surface tribology and practical engineering applications, traditional high-precision machining will not only increase its processing cost, but also the smooth surface cannot be formed because there is no oil storage area. Effective lubrication, prone to adhesive wear and abrasive wear, easy to scratch

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