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Alternating soft and hard composite coating for bearing material surface and preparation method thereof

A composite coating and bearing pad technology, applied in the field of metal surface engineering, to achieve the effects of improving the bearing capacity of bearing pads, improving wear resistance and anti-friction performance, improving working life and anti-lock performance

Inactive Publication Date: 2019-11-19
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The wear-resistant and anti-friction coating is prepared by using conventional low-cost materials on the surface of the copper alloy of the bearing bush to improve the frictional mechanical properties of the bearing bush

Method used

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  • Alternating soft and hard composite coating for bearing material surface and preparation method thereof
  • Alternating soft and hard composite coating for bearing material surface and preparation method thereof

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Embodiment 1

[0032] This embodiment provides a soft and hard composite coating for the surface of the bearing material, such as figure 1 As shown, it includes Cu coating, WC coating and MoS which are sequentially arranged outward from the surface of the bearing material. 2 coating. The thickness of the Cu coating is 15-50 μm, the thickness of the WC coating is 15-50 μm, and the MoS 2 The coating thickness is 15-50 μm. The total thickness of the composite coating is not more than 100 μm.

[0033] This embodiment also provides a method for preparing a soft and hard composite coating on the surface of the bearing material, which includes the following steps:

[0034] 1. Sand blast the inner surface of the bearing pad to make the roughness reach RZ 25-100μm. Put the sprayed bearing pad material into acetone solution for ultrasonic cleaning for 10 minutes. After cleaning, put the bearing pad material in an oven at 80°C for 30 min.

[0035] 2. Preparation of Cu soft coating by flame spraying...

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Abstract

The invention provides a soft hard alternate composite coating used for the surface of a bearing bush material and a preparation method of the soft hard alternate composite coating. The composite coating comprises a Cu coating, a WC coating and a MoS2 coating which are sequentially arranged from the surface to the outside of the bearing bush material. The preparation method comprises the steps that flames are sprayed on the surface of the bearing bush material, and the Cu coating and the WC coating are sequentially prepared; and then the MoS2 coating is prepared by spraying suspension liquid to the WC coating, so that the composite coating is obtained. The soft hard alternate composite coating used for the surface of the bearing bush material and the preparation method of the soft hard alternate composite coating have the following beneficial effects that the soft hard alternate coating is prepared on the bearing bush material, so that the abrasion resistance, the antifriction performance, the bearing capacity and the embedding performance of the bearing bush are improved, the working life of the bearing bush is prolonged, and the anti-lock performance of the bearing bush is improved.

Description

technical field [0001] The invention belongs to the technical field of metal surface engineering, and in particular relates to a soft-hard alternate composite coating for the surface of bearing pad materials and a preparation method thereof. Background technique [0002] Ordinary copper alloy bearing bushes have high friction coefficient, poor wear resistance, poor embedding, and are easy to lock after working for a long time. Excellent friction mechanical properties are a necessary condition for long-life bearing pads, so prolonging the working life of copper alloy bearing pads is mainly carried out from friction reduction and wear resistance. At present, research at home and abroad shows that wear-resistant and anti-friction coatings mostly use new synthetic materials, which are rare and expensive, but there is no research on three-layer soft-hard alternating coatings composed of ordinary single anti-friction and wear-resistant materials. [0003] At present, materials wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00
CPCC23C28/322C23C28/341
Inventor 曹均尹忠慰李虎林高庚员崔宇清王新波
Owner SHANGHAI JIAOTONG UNIV
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