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Copper-base powder metallurgy thrust bearing body and manufacturing method thereof

A technology for thrust bearings and manufacturing methods, applied to bearing components, shafts and bearings, mechanical equipment, etc., which can solve problems such as high molding pressure, low production efficiency, and poor green compact strength, so as to ensure production quality and improve production efficiency Effect

Inactive Publication Date: 2005-09-28
HANGZHOU ADVANCE GEARBOX GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formability of single alloy powder is poor, the required forming pressure is large, and the compaction strength is poor; while the single-element mixed powder is often pressed and formed to cause composition segregation, which affects the uniformity of the metallographic structure of the product
In addition, the sintering process of the existing manufacturing process includes two parts of "pre-oxidation" and "re-firing", and they are carried out separately. , bruises, and lower production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Embodiment 1, choose 78% copper Cu, 9% tin Sn, 11% lead Pb and other 2% mixed metal alloy powders, add therein the same component and the same component ratio by the ratio of 1:1 Metal single-element powder, after powder mixing, is first pressed into shape, and then undergoes a sintering process consisting of "pre-oxidation" and "re-sintering". The above-mentioned pre-oxidation and re-sintering are carried out continuously in the same furnace, and finally After finishing, the thrust bearing body is made.

Embodiment 2

[0009] Embodiment 2, choose copper 77% Cu, 11% tin Sn, 11% lead Pb, and other 1% mixed metal alloy powders, add therein the same component and the same component ratio by the ratio of 3:7 Metal single-element powder, after powder mixing, is first pressed into shape, and then undergoes a sintering process consisting of "pre-oxidation" and "re-sintering". The above-mentioned pre-oxidation and re-sintering are carried out continuously in the same furnace, and finally After finishing, the thrust bearing body is made.

Embodiment 3

[0010] Embodiment 3, choose the mixed metal alloy powder of 80% copper Cu, 11% tin Sn, 9% lead Pb, add the same component and the metal single element powder of the same component ratio in it by the ratio of 7:3 No, after powder mixing, it is pressed into shape first, and then undergoes the sintering process consisting of "pre-oxidation" and "re-sintering". The above-mentioned pre-oxidation and re-sintering are carried out continuously in the same furnace, and finally after finishing Make the thrust bearing body.

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PUM

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Abstract

The present invention relates to a copper base sintered thrust bearing and its production method. Said method includes the following steps: mixing metal single element powder and metal alloy powder according to the 30-70% ratio, pressing them and forming, then making sintering procedure including "preoxidation" and "double-sintering" in same furnace continuously, finally refining to obtain the invented thrust bearing. Said invention can raise production efficiency of product, and ensure production quality.

Description

technical field [0001] The invention relates to a copper-based powder metallurgy thrust bearing body and a manufacturing method thereof, in particular to a powder metallurgy component and a manufacturing process of copper, tin and lead mixed components. Background technique [0002] In the prior art, the copper-based powder metallurgical thrust bearing body is mainly made of copper, tin, lead alloy powder or single element powder mixed and then pressed and formed. Their usual material formula is: tin Sn contains 9-11% , Lead contains Pb9-11%, other metals are less than or equal to 2%, and the rest is copper Cu. A single alloy powder has poor formability, requires high forming pressure, and has poor compaction strength; while single-element mixed powder pressing often causes component segregation and affects the uniformity of the metallographic structure of the product. In addition, the sintering process of the existing manufacturing process includes two parts of "pre-oxidat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/06F16C33/14
Inventor 曲在纲计德林金成伟王宝珍黄海东
Owner HANGZHOU ADVANCE GEARBOX GRP