Self-bubricating lead-free bearing and manufacture method thereof

A lead-free bearing, self-lubricating technology, applied in the direction of bearing components, shafts and bearings, rolling resistance optimization, etc., can solve problems such as poor adhesion

Inactive Publication Date: 2004-04-14
ZHEJIANG CHANGSHENG SLIDING BEARINGS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it has poor adhesion on the dual material, which is the main cause of severe wear

Method used

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  • Self-bubricating lead-free bearing and manufacture method thereof
  • Self-bubricating lead-free bearing and manufacture method thereof

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Experimental program
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Embodiment Construction

[0035] During implementation, as described in the invention scheme of the description, wherein the preferred data are as follows:

[0036] The material formula is by weight 32-34% of polytetrafluoroethylene; 32-34% of polyparaben; 7-8% of molybdenum disulfide; the rest is polyphenylene sulfide.

[0037] The drying temperature is 250-280°C, and the drying time is 20-30 minutes, depending on the water in the emulsion is fully developed as the best point.

[0038] The sintering is carried out in a nitrogen-protected sintering furnace, the sintering temperature is 375-385° C., the sintering time is 40 minutes, and the nitrogen purity is above 99.9%. For different sintering furnaces, the nitrogen flow rate and pressure are also different. It is best that the steel substrate is not oxidized.

[0039] During implementation, replace EKONOL with PI or polyimide or / and replace M with graphite 0 S 2 , which has a similar effect.

[0040] Of course, after blanking and rolling, shapin...

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Abstract

The present invention relates to a self-lubricating lead-free bearing, including metal base plate, head-free copper powder layer and antifriction wear-resisting layer, finally they are rolled into the form of shaft sleeve. At the same time said invention also discloses its production method. Its antifriction wear-resisting layer material is PTFE, EKONOL, PPS and MoS2, and its technological process does not use toluene or aluminium nitrate.

Description

Technical field [0001] The present invention relates to sliding bearings, especially oil-free lubricating bearings; it is also related to the composition of polymer compounds. Background technique [0002] The three-layer composite bearing in the oil-free lubricating bearing is created by the British Gracia Company, referred to as DU. The product is based on a sheet-shaped steel plate, with a spherical porous bronze powder layer sintered in the middle, and the surface is rolled with lead-based mixture mainly made of polytetrafluoroethylene (PTFE), which penetrates into and covers the above-mentioned copper powder layer and sinters to form a Anti-friction and wear-resistant layer. Finally, the above-mentioned three-layer composite sheet is rolled into sleeve-shaped bearings of different sizes according to the size of the shaft. The DU type bearings produced all over the world are SF-1 type in China, which have been widely used in high, medium load and low speed occasions. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/12F16C33/14
CPCY02T10/865
Inventor 孙志华
Owner ZHEJIANG CHANGSHENG SLIDING BEARINGS
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