Preparation method of anti-corrosion and anti-fatigue damping spring

A shock-absorbing spring and fatigue-resistant technology, which is applied in the field of mechanical parts processing, can solve the problems that the anti-fatigue effect of the spring is not improved, the flexibility of elongation and contraction is reduced, and the driving comfort of the vehicle is affected, so as to achieve a good protection effect, The effect of improving driving comfort and good elasticity

Inactive Publication Date: 2019-12-03
MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The shock absorber is used to suppress the shock when the spring rebounds after absorbing the shock and the impact from the road surface. It is widely used in automobiles and motorcycles to accelerate the attenuation of the vibration of the frame and the body to improve the ride comfort of the car. At this time, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will reciprocate, and the shock absorber is used to suppress this spring jumping. If the shock absorber is too soft, the body will jump up and down. Too hard will bring too much resistance, hinder the normal work of the spring, hard shock absorber should match with hard spring, and the hardness of spring is closely related with the weight of the car, so in the process of driving of the vehicle, the shock absorber should be matched with the hard spring. In order to reduce the repeated elongation and contraction of the body vibration, the spring needs to have good fatigue resistance to maintain good deformation and shock absorption performance, and the vehicle is always exposed to the external environment during use, often Being ejected and bumped by stones, etc., and then contacting corrosive pollutants in the environment after bumping damage, corrosion and rust often occur, which not only affects the appearance, but the most important thing is to reduce the flexibility of elongation and shrinkage, making the The shock absorption effect is obviously reduced, which affects the driving comfort of the vehicle
[0003] The existing patent document CN108866524A discloses a method for anti-corrosion treatment of automobile shock absorber springs, which specifically discloses that the shock absorber springs are pickled first, then washed with water, and then blackened and sealed after drying. Although the obtained shock absorber spring can play a certain anti-corrosion effect, after using it for a period of time, especially the blackened magnetic iron oxide layer adhered to the surface of the spring is easily damaged due to high-speed ejection of hard objects such as stones during driving. and spalling, so that the anti-corrosion effect of the spring is significantly reduced, and the method disclosed in the patent document can only temporarily improve the anti-corrosion effect, and has no effect on the anti-fatigue effect of the spring

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  • Preparation method of anti-corrosion and anti-fatigue damping spring

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Effect test

Embodiment 1

[0024] A method for preparing an anti-corrosion and fatigue-resistant damping spring, comprising the following steps:

[0025] (1) Cleaning: Use sodium bicarbonate solution with a mass variation concentration of 4% and a temperature of 50°C to ultrasonically clean the formed shock spring for 8 minutes at a frequency of 28kHz. After taking it out, rinse it with clean water to remove the molded spring. Stains on the surface of the spring, to improve the post-processing effect, the spring must be cleaned;

[0026] (2) Polishing: ultrasonically polish the cleaning spring with a frequency of 23kHz, and the polishing solution is cerium oxide polishing solution. After polishing, rinse with clean water and dry to make the surface of the spring smooth, which can reduce the friction of the spring itself when the spring is compressed And the friction between the spring and the shock absorber has a better protection effect on the spring and shock absorber, and the spring has to be polishe...

Embodiment 2

[0034] A method for preparing an anti-corrosion and fatigue-resistant damping spring, comprising the following steps:

[0035] (1) Cleaning: Use sodium bicarbonate solution with a mass variation concentration of 4.5% and a temperature of 53°C to ultrasonically clean the formed damping spring for 9 minutes at a frequency of 29 kHz. After taking it out, rinse it with clean water to remove the molded spring. Stains on the surface of the spring, to improve the post-processing effect, the spring must be cleaned;

[0036] (2) Polishing: Ultrasonic polishing is performed on the cleaning spring, the frequency is 24kHz, and the polishing solution is cerium oxide polishing solution. After polishing, rinse with clean water and dry to make the surface of the spring smooth, which can reduce the friction of the spring itself when the spring is compressed And the friction between the spring and the shock absorber has a better protection effect on the spring and shock absorber, and the spring...

Embodiment 3

[0044] A method for preparing an anti-corrosion and fatigue-resistant damping spring, comprising the following steps:

[0045] (1) Cleaning: Use sodium bicarbonate solution with a mass variation concentration of 5% and a temperature of 55°C to ultrasonically clean the formed shock-absorbing spring for 10 minutes at a frequency of 30 kHz, then rinse it with clean water after taking it out to remove the formed Stains on the surface of the spring, to improve the post-processing effect, the spring must be cleaned;

[0046] (2) Polishing: Ultrasonic polishing is performed on the cleaning spring with a frequency of 25kHz. The polishing liquid is cerium oxide polishing liquid. After polishing, rinse with clean water and dry to make the surface of the spring smooth, which can reduce the friction of the spring itself when the spring is compressed. And the friction between the spring and the shock absorber has a better protection effect on the spring and shock absorber, and the spring h...

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Abstract

The invention mainly relates to the technical field of machining of mechanical parts, and discloses a preparation method of an anti-corrosion and anti-fatigue damping spring, which comprises the following steps: cleaning, polishing, carburizing, primary quenching, nitriding, secondary quenching, tempering and post-treatment. According to the preparation method of the anti-corrosion and anti-fatigue damping spring, the prepared spring is high in strength, high in anti-corrosion capacity, not prone to corrosion when exposed to air, high in deformation capacity and anti-fatigue performance and capable of still having a good damping effect after being used for a period of time, and the driving comfort can be improved.

Description

technical field [0001] The invention mainly relates to the technical field of mechanical parts processing, in particular to a preparation method of an anti-corrosion and fatigue-resistant damping spring. Background technique [0002] The shock absorber is used to suppress the shock when the spring rebounds after absorbing the shock and the impact from the road surface. It is widely used in automobiles and motorcycles to accelerate the attenuation of the vibration of the frame and the body to improve the ride comfort of the car. At this time, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will reciprocate, and the shock absorber is used to suppress this spring jumping. If the shock absorber is too soft, the body will jump up and down. Too hard will bring too much resistance, hinder the normal work of the spring, hard shock absorber should match with hard spring, and the hardness of spring is closely related with the weight ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/34C23C8/02C23C8/80C21D9/02C21D1/18C23F17/00
CPCC21D1/18C21D9/02C23C8/02C23C8/34C23C8/80C23F17/00
Inventor 李孙德
Owner MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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