Shocker absorber working cylinder surface treatment method

A surface treatment and working cylinder technology, which is applied in metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of strong co-infiltration ability, short infiltration speed time, poor fatigue resistance, and low anti-corrosion level. To achieve the effect of dense seepage layer, short process time and low production cost

Pending Publication Date: 2020-08-28
江苏奕华新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for surface treatment of the working cylinder of the shock absorber, which overcomes the deficiencies of the prior art, has a reasonable design and a compact structure, and solves the problem of low surface hardness of the existing working cylinder of the shock absorber, For the problems of low anti-corrosion level and poor fatigue resistance, the present invention improves the hardness and anti-corrosion level of the working cylinder surface of the shock absorber through a simple process method. At the same time, the process flow is simple, the co-infiltration ability is strong, and the infiltration speed time is short, which greatly saves the process time, while less pollution, with strong practicality

Method used

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  • Shocker absorber working cylinder surface treatment method
  • Shocker absorber working cylinder surface treatment method
  • Shocker absorber working cylinder surface treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0058] A method for treating the surface of a working cylinder of a shock absorber with nitrogen, carbon and oxygen comprises the following steps:

[0059] 1. Put the semi-finished product of the working cylinder of the shock absorber into the nitrocarburizing tooling, the furnace weight is 200KG, and perform ultrasonic cleaning to remove oil stains, the water temperature is 55°C, and the time is 10 minutes;

[0060] 2. After step 1 is processed, the circulating water is pressurized and sprayed and rinsed. The spraying time is 5 minutes and the rinsing time is 2 minutes;

[0061] 3. Pre-treat the working cylinder of the shock absorber after the treatment in step 2, raise the surface temperature of the workpiece from normal temperature to 380±5°C, the heating rate is 20°C / min, and keep warm for 40 minutes;

[0062] 4. Carry out nitrogen, carbon and oxygen co-infiltration on the working cylinder of the shock absorber treated in step 3 to obtain a white bright layer and a solid s...

Embodiment 2

[0068] The difference from Example 1 is that the shock absorber working cylinder has a furnace loading weight of 300kg, the amount of regenerant added is 1.5KG, the co-infiltration temperature is 580°C, and the operation data of other steps are the same.

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Abstract

The invention relates to the technical field of shock absorber working cylinder surface treatment processes, and provides a shock absorber working cylinder surface treatment method. The method comprises the steps of serving nitriding agent serves as a basic agent, serving a regenerating agent as a controllable adjusting agent, serving an oxygen permeation agent as an oxidizing agent, and mutuallymatching three kinds of nitriding agents to modify the surface of a shock absorber working cylinder, thereby improving the performance of the damper working cylinder. The defects in the prior art areovercome, the design is reasonable, the structure is compact, the problems that an existing shock absorber working cylinder is low in surface hardness, low in anti-corrosion grade and poor in fatigueresistance are solved. The surface hardness and the anti-corrosion grade of the shock absorber working cylinder are improved through the simple process method, meanwhile, the process flow is simple, the co-permeation capacity is high, the permeation speed is short, the process time is greatly saved, meanwhile, the pollution is small, the environment is protected, and the practicability is particularly high.

Description

technical field [0001] The invention relates to the technical field of shock absorber working cylinder surface treatment technology, in particular to a shock absorber working cylinder surface treatment method. Background technique [0002] At present, most of the surface treatment of the working cylinder of the shock absorber is treated with chrome plating to improve the problem of poor corrosion resistance and non-wear resistance of the working cylinder. The surface chrome plating of the working cylinder of the shock absorber will lead to: 1. The relationship between the chrome plating layer and the shock absorber The working cylinder of the shock absorber is a physical combination. The fatigue of the working cylinder will cause the chrome plating layer to peel, peel and crack due to insufficient bonding force, resulting in the failure of the working cylinder of the shock absorber and reducing the service life; 2. The chrome plating layer peels off and falls off at the same ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/58
CPCC23C8/58
Inventor 任肖帆李远辉祝伟王梁
Owner 江苏奕华新材料科技有限公司
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