Sliding part and its surface treatment method
A sliding part, sliding contact technology, used in pump components, machines/engines, variable displacement pump components, etc., can solve the problems of lack of oil on the friction surface, decreased anti-seizure ability, and easy damage to the sliding surface.
Inactive Publication Date: 2017-07-14
SANDEN HUAYU AUTOMOTIVE AIR CONDITIONING CO LTD
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Problems solved by technology
However, where solid lubricants are disadvantageous is easy to wear
This shortcoming can be overcome by increasing the amount of bonding resin, but there is a limit to increasing the amount of bonding resin because it can lead to a decrease in seizure resistance
[0005] To sum up, there is a lack of a way to improve the sliding parts in the anti-seizing compressor at the same time, such as the friction resistance between the swash plate and the sliding shoe, the blade and the cylinder, and the oil shortage phenomenon often occurs on the friction surface, so at high speed Sliding surfaces are prone to damage during operation
Method used
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[0033] The sliding parts in the compressor, such as the swash plate and the sliding shoe, the blade and the cylinder have a large friction resistance, and the friction surface is often short of oil, so the sliding surface is easy to be damaged during high-speed operation.
[0034] During the movement of the compressor, the rotation speed of the swash plate 10 generally reaches more than 800 rpm, and the gas pressure in the cylinder bore can reach about 2 MPa when the piston 20 moves toward the bottom of the cylinder bore. The sliding shoe 30 transmits and acts on the swash plate, and the pressure of one sliding shoe acting on the swash plate can reach about 1200N.
[0035] The swash plate generally uses iron, such as QT500 cast iron or 45 steel or bearing steel, or aluminum alloy as the base. Sliding shoes are generally made of iron-based metals, such as bearing steel and GCr15 steel, and have been quenched and tempered to have high hardness. Due to the high hardness of the s...
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Abstract
The invention provides a sliding part. The sliding part comprises a base material, an interlayer, and a sliding contact layer formed on the interlayer. The main components of the interlayer are at least one resin of polyimide resin and polybenzoate resin, optional solid lubricant used for the interlayer, and an optional non-alloy hard additive composition evenly distributed in the resin, and the sliding contact layer comprises at least one resin of polyamide imide resin, polyether ketone resin, polyether sulfone resin, and optional solid lubricant used for the sliding contact layer, wherein the thickness of the interlayer is larger than the thickness of the sliding contact layer.
Description
technical field [0001] The invention relates to a sliding part, especially a sliding part of a compressor. Background technique [0002] In the field of slide technology, it exhibits excellent seizure and wear resistance under heavy load or no lubrication. [0003] Japanese Laid-Open Patent Application No. 2005-146366 discloses a sliding part comprising a base material and a protective film layer on the base material. The protective film layer includes an intermediate layer made of a heat-resistant resin and a solid lubricant made of a mixture of the heat-resistant resin. surface layer. Wherein, the heat-resistant resin of the middle layer and the surface layer may be polyamide-imide resin, polyimide resin, epoxy resin, or phenolic resin. The middle layer also contains hard particles, extreme pressure materials, surfactants, silane coupling agents, processing stabilizers, antioxidants, and solid lubricants. The same type of resin is used for the middle layer and the surfa...
Claims
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IPC IPC(8): C23C26/00C23C28/00F04B39/00
Inventor 周继峥
Owner SANDEN HUAYU AUTOMOTIVE AIR CONDITIONING CO LTD