Steel-copper bimetallic axle sleeve and process for producing same

A technology of bimetallic shafts and production methods, which is applied to bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of complex production methods, waste of raw materials, and bulky products, so as to save manpower, high reliability, and reduce production costs. cost effect

Inactive Publication Date: 2005-06-29
DALIAN SANHUAN COMPOSITE MATERIAL TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the technical problems existing in the prior art such as bulky products, waste of raw materials and complicated production methods, and provides a steel-copper bimetal shaft sleeve with high wear resistance and high strength and its production method

Method used

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  • Steel-copper bimetallic axle sleeve and process for producing same

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Embodiment Construction

[0022] The specific implementation manner of the present invention will be described below with reference to the accompanying drawings.

[0023] figure 1 Shown is a GEW140HFZ5B shaped spherical plain bearing.

[0024] a. The steel sleeve 1 is a double-half outer ring with axially symmetrical two petals combined together for assembly. It can be made by the existing technology, that is, 45 steel is used for rough turning (including the inner spherical surface) after forging and annealing, and then Use Fancheng method on the internal grinding machine to roughly grind the inner spherical surface to make the surface roughness reach Ra3.2-6.3μm, and chamfer the end; then use a sandblasting machine to sandblast the inner spherical surface to clean the inner surface of the steel sleeve. The compressed air used for sandblasting of alumina or silicon carbide can be used to remove oil and water. The air pressure is 0.15-0.4MPa, and the sand size is 0.5-1mm. It can be cleaned by other m...

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Abstract

The invention discloses a steel-copper bimetal shaft sleeve, which is provided with a steel sleeve (1), and a copper alloy spray-coated sintered layer (2) is directly connected to the inner side of the steel sleeve (1). The production method is as follows: making a steel sleeve (1) and cleaning its inner surface; directly spraying copper alloy powder on the inner surface of the steel sleeve (1) to form a copper alloy spray coating; The temperature of the melting point sinters the steel sleeve (1) coated with the copper alloy spraying layer, so that the copper alloy spraying layer becomes a copper alloy spraying sintering layer (2) and is closely combined on the inner surface of the steel sleeve (1). The production process is simple, there is no need for the low-carbon cold-rolled steel transition layer of the prior art, a large amount of material can be saved and the weight is light, the copper alloy on the surface layer is dense, the hardness is high, and the porosity is only about 1%. The bonding strength is also much higher than that of the prior art, and has long service life and reliability.

Description

Technical field: [0001] The invention relates to a shaft sleeve for a bearing and a production method thereof, in particular to a steel-copper bimetallic shaft sleeve and a production method thereof. Background technique: [0002] Steel-copper bimetal bushings have been widely used in the field of bearings due to their strong bearing capacity and good wear resistance. At present, the production method of the steel-copper bimetal shaft sleeve is basically the method disclosed in the utility model patent specification of Chinese Patent No. 98239209.5 and the name "Friction Reduction and Wear-Resistant Self-lubricating Joint Bearing". The low-carbon cold-rolled steel plate is sintered in a high-temperature sintering furnace with a protective atmosphere, rolled on a rolling mill after sintering, and then annealed (tempered) and leveled to make a bimetallic sheet, and then the bimetallic The plate is blanked on the stamping equipment, rolled into a circular thin-walled bushing o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/00F16C33/12F16C33/14
Inventor 李云龙刘正明
Owner DALIAN SANHUAN COMPOSITE MATERIAL TECH DEV
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