Manufacturing method of suction valve plate of vortex automobile air conditioner compressor

Abstract

The invention discloses a manufacturing method of a suction valve plate of a vortex automobile air conditioner compressor. Thermal compression molding is carried out through a powder metallurgy method. The manufacturing method comprises the following steps of 1, designing material composition: taking stainless steel powder as a main material, taking graphite powder, copper powder, a powder lubricant as auxiliary materials, and evenly mixing the main material and the auxiliary materials; 2, selecting a corresponding crucible, uniformly coating the surface of the crucible with talcum powder andwater glass, heating the crucible, adding the mixture obtained in the step 1 and preheated to 300-600 DEG C, continuously heating the crucible until the mixture is softened; 3, conducting molding: conducting vacuum thermal compression molding to obtain a green blank; 4, conducting sintering, vacuum quenching and tempering treatment on the green blank obtained in the step 3; 5, conducting rough machining to obtain a rough finished product; 6, conducting copious cooling and nitrogen treatment; and 7, conducting finish machining. Through the manufacturing method, the mechanical strength, mechanical hardness and smoothness of the compressor suction valve plate are improved, the machining accuracy of the compressor suction valve plate is improved, the machining cost is reduced, and the actual application requirements are met.

Description

technical field [0001] The invention relates to a method for manufacturing a suction valve plate of a scroll-type automobile air-conditioning compressor, belonging to the technical field of compressors. Background technique [0002] The air-conditioning compressor is the heart of the automobile air-conditioning refrigeration system, which plays the role of compressing and transporting refrigerant vapor; the compressor is divided into two types: fixed displacement and variable displacement. Among them, the displacement of the fixed-displacement compressor increases proportionally with the increase of the engine speed. It cannot automatically change the power output according to the cooling demand, and has a relatively large impact on the engine fuel consumption. Its control is generally By collecting the temperature signal of the air outlet of the evaporator, when the temperature reaches the set temperature, the electromagnetic clutch of the compressor is released, and the co...

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Problems solved by technology

[0003] The scroll type automotive air-conditioning compressor has the advantages of high efficiency, compact structure, small size, and light weight, so it is widely used in automotive air-conditioning; among them, the performance of the compressor suction valve plays a crucial role in the overall machine The role of the compressor suction valve, and the excellent performance of the compressor suction valve mainly depends on the processing method of the suction valve and the processing blank; in the prior art, the compressor suction valve is processed by wire cutting with ordinary steel, which is The mechanical strength, mechanical hardness and smoothness of the suction valve plate processed by this method have certain defects, and the processing efficiency is low, and the processing cost is high, so it is not suitable for popularization and use.

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