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Thin-wall bimetal self-lubricating bearing and manufacturing method

A technology of self-lubricating bearings and manufacturing methods, applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of low mechanical strength and high cost, and achieve the effect of improving mechanical strength, light weight and small volume

Active Publication Date: 2009-12-09
孙承玉 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problems of relatively high product cost and low mechanical strength existing in the prior art, and provides a method for manufacturing a thin-walled bimetallic self-lubricating bearing with high strength and low cost

Method used

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  • Thin-wall bimetal self-lubricating bearing and manufacturing method

Examples

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Effect test

Embodiment 1

[0017] a. Evenly spread 150-250 mesh spherical or dendritic copper alloy powder on a steel plate or stainless steel plate 1 of 1-3 mm, with a thickness of 0.5-2 mm, sinter in a hydrogen protection furnace or a vacuum furnace, and roll after sintering. Composite copper alloy layer 2 on steel plate or stainless steel plate 1;

[0018] b. On the copper alloy layer 2, process blind holes that can be circular, diamond-shaped, square, oval, etc. in various shapes by drilling, punching or rolling. The depth of the blind hole 3 is the same as the thickness of the aluminum alloy layer 2. The difference is 0.1 mm, that is, 0.4 to 1.9 mm. If it is a round hole, the diameter of the hole is 1.3 to 3.5 mm. It should be ensured that the total surface area of ​​the solid lubricant accounts for 25 to 35% of the surface area of ​​the copper alloy.

[0019] c. Spray ammonium chloride solution evenly on the inner surface of blind hole 3, spread 40-150 mesh spherical tin bronze powder on the ammon...

Embodiment 2

[0023] Others are the same as in Example 1, except that in step a, 150-250 mesh spherical or dendritic copper alloy powder is sprayed on the steel plate or stainless steel plate 1, and the copper alloy layer 2 is compounded on the steel plate or stainless steel plate 1.

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Abstract

The invention discloses a production method of a thin-walled bimetallic self-lubricating bearing. A copper alloy layer (2) is compounded on a steel plate or a stainless steel plate (1); a blind hole (3) is processed on the copper alloy layer (2); a blind hole (3) is formed on the blind The inner surface of the hole (3) is evenly sprayed with ammonium chloride solution, and then 40-150 mesh spherical tin bronze powder is sprinkled on the ammonium chloride solution, and the copper powder is sintered in a hydrogen protection furnace or a vacuum furnace to make the tin bronze powder layer ( 4) Bonded on the inner surface of the blind hole (3); press the soft solid lubricant into the blind hole (3) and embed it in the pores of the tin bronze powder layer (4), and sinter at a temperature of 365-395°C, After sintering, it is finished rolled into a plate; the plate is sheared, rolled into shape, finished, and the inner hole is finished. It has the advantages of low cost and high strength.

Description

Technical field: [0001] The invention relates to a method for manufacturing a self-lubricating bearing, in particular to a method for manufacturing a thin-walled bimetallic self-lubricating bearing with high strength and low cost. Background technique: [0002] The structure of the existing inlaid self-lubricating bearing basically has the following two forms: one is the copper alloy inlaid self-lubricating bearing, the copper alloy is cast into a cylindrical blank by casting method, the inner and outer circles are initially processed, and the inner and outer circles are processed. Through holes or blind holes are evenly distributed on the surface, and solid lubricating cylinders are embedded in through holes or blind holes by interference fit or bonding method, and then formed by mechanical finishing. In order to ensure the strength of the product and the firmness of the solid lubricated cylinder, the copper alloy wall is usually thicker, generally 5-40 mm, which wastes mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/10F16C33/14
Inventor 孙承玉关振国王焕栋
Owner 孙承玉
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