Improved high-wear-resistance self-lubricating chemical nickel plating liquid

Abstract

The invention discloses improved high-wear-resistance self-lubricating chemical nickel plating liquid. Silicon dioxide and graphite are added in basic chemical nickel plating liquid for codeposition to obtain a nickel-phosphorus alloy wear resisting layer; the nickel-phosphorus alloy wear resisting layer has a self-lubricating function to improve the wear resistance and to prolong the service life of a compressor; and meanwhile, the stability of the plating liquid is improved through adjusting contents of other components, and the surface modification is performed for an additive to improve the codeposition dispersity and to increase the codeposition content so as to guarantee the chemical nickel stability and the plating layer quality.

Description

technical field [0001] The invention belongs to the technical field of manufacturing automobile air-conditioning compressors, and in particular relates to a production method of a wear-resistant alloy layer of a swash plate of a compressor. Background technique [0002] With the development of the automobile manufacturing industry, the research on automobile air conditioning technology is getting faster and faster. The automotive air-conditioning compressor is the core component. The automotive air-conditioning compressor usually uses a swash plate rotary piston for compression. The high-speed rotation of the swash plate can reach 3000 rpm, so the requirements for wear resistance are very high. At present, the swash plate in air-conditioning compressors usually adopts a split type, that is, the part in the middle of the swash plate that is driven by a motor to rotate is made of cast iron or stainless steel, while the ring shoulder on the outer circumference of the swash plat...

AI Technical Summary

Problems solved by technology

The cost of the swash plate in this way is very high, and the cost of the ring shoulder alone is tens of yuan, and because of the split structure, the strength is limited, and it is prone to wear deviation during operation, resulting in short life

[0003] The invention patent No. 201310254119.7 discloses a highly wear-resistant nickel-phosphorus alloy plating solution for the swash plate of air-conditioning compressors. Although the chemical nickel obtained has higher wear resistance than cobalt-molybdenum alloys, due to the organic additives The existence of the coating will increase the density and brightness of the coating, and at the same time, it will also cause poor bonding and limited self-lubricating effect, and because in the long-term practical experience, it is found that the swash plate also receives up and down motions while rotating at high speed for a long time. The rolling impact during the time makes the real wear resistance of the swash plate limited.