Anti-attrition spacer capable of reducing frictional abnormal sound and application of anti-attrition spacer

A gasket and abnormal sound technology, applied in the field of mechanical parts, can solve the problems of easy falling off and poor durability, and achieve the effect of reducing friction coefficient, ensuring durability and reducing adhesive wear

Inactive Publication Date: 2016-07-20
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The anti-friction layer provided in the prior art tends to fall off as the friction time of the contact surface prolongs, resulting in the reappearance of abnormal friction noise, and its durability is poor

Method used

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  • Anti-attrition spacer capable of reducing frictional abnormal sound and application of anti-attrition spacer
  • Anti-attrition spacer capable of reducing frictional abnormal sound and application of anti-attrition spacer

Examples

Experimental program
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Effect test

Embodiment 1

[0047] This embodiment provides a wear-reducing pad that can reduce friction and noise. The wear-reducing pad uses a low-carbon alloy steel cold-rolled plate as the substrate, wherein the low-carbon alloy steel cold-rolled plate includes the following mass percentages: Components: C: 0.04%, Si: 0.16%, Mn: 0.02%, P: 0.014%, S: 0.08%, Alt: 0.032%.

[0048] The substrate is placed in a carbonitriding furnace for carbonitriding heat treatment. The specific process is: feed kerosene into the carbonitriding furnace with the substrate and ammonia gas at the same time, and treat at a temperature of 500°C 2h, the carbonitriding heat treatment can be completed. Then sand blast the surface of the substrate after carbonitriding heat treatment, and then apply polyvinyl fluoride coating on the substrate to obtain a polyvinyl fluoride coating with a thickness of 12 μm, and dry it in a drying oven at 40 °C for 3 hours , to produce the desired antifriction gasket in this embodiment.

[0049]...

Embodiment 2

[0051] This embodiment provides a wear-reducing pad that can reduce friction and noise. The wear-reducing pad uses a low-carbon alloy steel cold-rolled plate as the substrate, wherein the low-carbon alloy steel cold-rolled plate includes the following mass percentages: Components: C: 0.02%, Si: 0.14%, Mn: 0.01%, P: 0.012%, S: 0.07%, Alt: 0.030%.

[0052] The substrate is placed in a carbonitriding furnace for carbonitriding heat treatment. The specific process is: acetone is passed into the carbonitriding furnace with the substrate, and ammonia gas is passed into it at the same time, and treated at a temperature of 450 ° C. 1h, the carbonitriding heat treatment can be completed. Then sandblast the surface of the substrate after carbonitriding heat treatment, and then coat the polytetrafluoroethylene coating on the substrate to obtain a polytetrafluoroethylene coating with a thickness of 13 μm, and place it in a drying oven at 50 ° C. After drying for 2 hours, the anti-frictio...

Embodiment 3

[0055] This embodiment provides a wear-reducing pad that can reduce friction and noise. The wear-reducing pad uses a low-carbon alloy steel cold-rolled plate as the substrate, wherein the low-carbon alloy steel cold-rolled plate includes the following mass percentages: Components: C: 0.03%, Si: 0.15%, Mn: 0.03%, P: 0.010%, S: 0.06%, Alt: 0.028%.

[0056] By immersing the substrate in cyanate-containing (CNO - ) in a salt bath for 30 minutes, the temperature was set at 520°C, carbonitriding heat treatment was carried out, and then it was placed in an oxidation device for oxidation for 15 minutes, and the temperature was set at 350°C. Then, the surface of the substrate after the carbonitriding heat treatment was subjected to shot blasting treatment, and then the nylon 11 coating was coated on the substrate to obtain a nylon 11 coating with a thickness of 15 μm, and dried in a drying oven at 48°C for 3 hours. Obtain the desired anti-friction gasket of this embodiment.

[0057] ...

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Abstract

The invention discloses an anti-attrition spacer capable of reducing frictional abnormal sound and an application of the anti-attrition spacer and belongs to the field of mechanical parts. The anti-attrition spacer takes a low-carbon alloy cold-rolled sheet as a base body, and carbonitriding thermal treatment and surface coating treatment of a polyfluorocomplex and/or a nylon 11 coating are successively performed on the low-carbon alloy cold-rolled sheet. The adhesive force between the coating and the base body in the anti-attrition spacer provided by the invention is large, and the coating has excellent anti-attrition effect and wear-resistant effect. The anti-attrition spacer is used between contact surfaces which rub with each other. With prolonging of frictional time, the coating on the anti-attrition spacer does not fall off, so that the durability of the anti-attrition spacer is ensured, the frictional coefficient between the anti-attrition spacer and the contact surfaces is effectively reduced, and the adhesive wear is reduced, and therefore, the frictional abnormal sound is further reduced. In particular, the anti-attrition spacer used in the field of automobiles can effectively relieve the frictional abnormal sound generated between the end face of a universal joint at the fixed end of a driving shaft and a contact surface of a hub bearing of an automobile.

Description

technical field [0001] The invention relates to the field of mechanical parts, in particular to a wear-reducing gasket capable of reducing frictional noise and an application thereof. Background technique [0002] The contact surface between objects can produce friction noise during relatively low stick-slip motion. The friction noise is the shear fracture of the adhesion node formed by the adhesion effect under the action of relative sliding and load on the contact surface of the object. , and make the fracture surface vibrate and produce sound. The generation of abnormal friction noise will cause problems such as noise, wear and failure of mechanical parts, which occur in many fields, such as doors and windows, fans, engines, etc., especially in the field of automobile engines, for example, the fixing of automobile drive shafts The end face of the end universal joint is in contact with the end face of the hub bearing, and the contact surface formed by the two often has se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B43/00C23C8/30F16C11/06
CPCF16B43/002C23C8/30F16C11/06
Inventor 孙利飞钱建功王少璋范文来蔡志林李自菊师朝霞
Owner CHERY AUTOMOBILE CO LTD
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