Method capable of improving self-lubrication of distributing valve

A self-lubricating, oil-separating valve technology, applied in ion implantation plating, coating, metal material coating technology, etc., can solve the problems of oil film damage, low oil film strength, and increased lateral force, reaching the surface Effects of reduced coefficient of friction, improved corrosion resistance, and enhanced wear resistance

Inactive Publication Date: 2020-04-17
XIAN AERO ENGINE CONTROLS
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  • Application Information

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Problems solved by technology

Since the replacement of 3# aviation kerosene, the part has been stuck for many times. The reason for the failure is that the lubricity of 3# kerosene is low and the oil film strength is low. Loss of balance, under the non-concentric axial force, the lateral force increases, destroying the oil film instantly, and then in the case of poor lubrication conditions, the oil distribution valve and the bushing have adhesive wear, resulting in the oil distribution valve being stuck

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  • Method capable of improving self-lubrication of distributing valve
  • Method capable of improving self-lubrication of distributing valve
  • Method capable of improving self-lubrication of distributing valve

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Embodiment Construction

[0020] In order to adapt to 3# aviation kerosene and solve the stuck fault of the valve, the present invention injects N and Ta ions into the surface of the oil separation valve (9Cr18) to modify the surface. After N ion implantation, an interstitial solid solution is formed, which has a strong pinning effect on dislocations and solid solution strengthening of the matrix, while the formation of nitrides has a strong effect of dislocation strengthening and dispersion strengthening. This series of strengthening leads to matrix The surface of the material is hardened, the surface coefficient of friction is reduced, and the anti-wear properties are enhanced. And because of its extremely high corrosion resistance, Ta can improve the corrosion resistance of the surface of parts after injection.

[0021] The invention injects N ions on the surface of the oil separation valve and deposits Ta ions by ion beam sputtering, and then performs surface Vickers hardness, substrate Rockwell ha...

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Abstract

The invention belongs to the field of material surface treatment, and relates to a method capable of improving self-lubrication of a distributing valve. The method includes the following steps of firstly, performing ultrasonic cleaning on parts through acetone; secondly, performing ion beam sputter cleaning after the parts are loaded into a furnace; thirdly, performing N ion injection; and fourthly, performing N ion injection and Ta ion sputter deposition. By means of the method capable of improving self-lubrication of the distributing valve, the surface hardness and corrosion resistance of the parts can be improved, and the surface friction coefficient of the parts can be reduced.

Description

technical field [0001] The invention belongs to the field of material surface treatment and relates to a method capable of improving the self-lubricating property of an oil separation valve. Background technique [0002] The oil distribution valve is one of the key parts of the aircraft engine. When working, the valve rotates at a high speed, with a speed of 4000-4700 rpm. Since the replacement of 3# aviation kerosene, the part has been stuck for many times. The reason for the failure is that the lubricity of 3# kerosene is low and the oil film strength is low. Loss of balance, under the non-concentric axial force, the lateral force increases, destroying the oil film instantly, and then in the case of poor lubrication conditions, the oil distribution valve and the bushing have adhesive wear, resulting in the oil distribution valve being stuck . Contents of the invention [0003] In order to solve the above-mentioned technical problems in the background technology, the pr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/48C23C14/02C23C14/34C23C14/16
CPCC23C14/021C23C14/022C23C14/165C23C14/34C23C14/48
Inventor 杜娜陈小勇刘海汉李强董树勋李宝清
Owner XIAN AERO ENGINE CONTROLS
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