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A copper-based wear-resistant and impact-resistant bimetallic composite material and its preparation method

A composite material and impact-resistant technology, which is applied in the field of copper-based wear-resistant and impact-resistant bimetallic composite materials and their preparation, can solve the problems of low friction and wear resistance that have not yet been retrieved, and achieve good low friction and good friction and wear performance and the effect of impact resistance

Active Publication Date: 2017-10-17
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the work is focused on how to improve the wear resistance of copper-based composite materials, and no relevant patents have been retrieved that consider both the low friction and wear resistance of the material and the impact resistance of the material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The components and mass percentages of the lubricating layer of copper-based wear-resistant and impact-resistant bimetallic composite materials are: nickel: 10%, chromium: 0.5%, titanium: 1%, CuSn10: 78.5%, molybdenum disulfide: 10% . First, mix nickel, chromium, titanium, CuSn10 powders with a purity greater than 99.0% according to the mass percentage content of nickel: 10%, chromium: 0.5%, titanium: 1%, CuSn10: 78.5%, and then use wet ball milling for 20 hours. 400r / min, the ratio of ball to material is 10:1, and then molybdenum disulfide (MoS2) with a powder purity greater than 99.0% 2 ) powder is added to the above mixture at a mass percentage of 10%, and then the above mixture is ball-milled for 5 hours using the above-mentioned wet ball milling process, and then mixed evenly. After drying, the mixed powder is obtained, and the support layer alloy powder is weighed and the above-mentioned mixed powder are carried out step-by-step double-layer powder paving in a gr...

Embodiment 2

[0018] The components and mass percentages of the lubricating layer of copper-based wear-resistant and impact-resistant bimetallic composite materials are: nickel: 15%, chromium: 0.5%, titanium: 1%, CuSn10: 73.5%, molybdenum disulfide: 10% . First, mix nickel, chromium, titanium, CuSn10 powders with a purity greater than 99.0% according to the mass percentage content of nickel: 15%, chromium: 0.5%, titanium: 1%, CuSn10: 73.5%, and then use wet ball milling for 20 hours. 400r / min, the ratio of ball to material is 10:1, and then molybdenum disulfide (MoS2) with a powder purity greater than 99.0% 2 ) powder is added to the above mixture at a mass percentage of 10%, and then the above mixture is ball-milled for 5 hours using the above-mentioned wet ball milling process, and then mixed evenly. After drying, the mixed powder is obtained, and the support layer alloy powder is weighed and the above-mentioned mixed powder are carried out step-by-step double-layer powder paving in a gr...

Embodiment 3

[0020] The components and mass percentages of the lubricating layer of the copper-based wear-resistant and impact-resistant bimetal composite are: nickel 15%, chromium: 1%, titanium: 1%, CuSn10: 68%, molybdenum disulfide: 15%. First, mix nickel, chromium, titanium, and CuSn10 powders with a purity greater than 99.0% according to the mass percentage content of nickel: 15%, chromium: 1%, titanium: 1%, CuSn10: 67%, and then use wet ball milling for 20 hours. 400r / min, the ratio of ball to material is 10:1, and then molybdenum disulfide (MoS2) with a powder purity greater than 99.0% 2 ) powder is added to the above mixture at a mass ratio of 15%, and then the above mixture is ball-milled for 5 hours by the above-mentioned wet ball milling process, and mixed evenly. After drying, the mixed powder is obtained, and the support layer alloy powder and the above-mentioned The mixed powder is double-layered in a graphite mold, cold-pressed and preformed, and then hot-pressed and sintered...

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Abstract

The invention discloses a copper-based wear-resistant and impact-resistant bimetal composite material. The composite material is composed of a supporting layer and a lubricating layer. The supporting layer is a CuSn10 alloy. The components contained are nickel, chromium and titanium, and the components contained in the lubricating phase are molybdenum disulfide and graphite. The invention also discloses a preparation method of the composite material. The copper-based wear-resistant and impact-resistant bimetallic composite material of the present invention does not produce cracks under the impact of alternating loads and still has good low-friction and anti-dry wear properties when the oil film is damaged or the oil lubrication is insufficient. It can be used to solve the problems of lubrication and wear resistance of sliding parts under extremely severe working conditions such as vibration, alternating load and high speed, which are common in high-tech industries such as modern aviation, aerospace, high-speed railway and electric power.

Description

technical field [0001] The invention belongs to the field of self-lubricating and wear-resistant materials, and relates to a copper-based wear-resistant and impact-resistant bimetal composite material and a preparation method thereof. The composite material of the present invention is suitable for parts such as self-lubricating bearings, slide plates, pantographs, and dynamic seals for aviation pumps that work under the impact of alternating loads. The composite material does not produce cracks under the action of alternating loads and is Even when the oil film is damaged or the oil lubrication is insufficient, it still has good low friction and anti-dry wear characteristics. Background technique [0002] In the application of modern aviation, aerospace, high-speed railway and electric power and other industries, there are extremely harsh working conditions such as vibration, alternating load and high speed, and the improvement of the lubrication, wear resistance and sealing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F7/02C22C9/06C22C32/00
Inventor 陕钰贾均红易戈文王文珍刘峰
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI