Title:
METHOD FOR MANUFACTURING ULTRA-LOW-NOISE LONG-SERVICE-LIFE OIL-RETAINING BEARING IN POWDER METALLURGY
Document Type and Number:
WIPO Patent Application WO/2016/206259
Kind Code:
A1
Abstract:
A method for manufacturing an ultra-low-noise long-service-life oil-retaining bearing in powder metallurgy comprises: powder mixing: mixing raw material powder comprising: 7.0% to 8.5% of Sn element, 2.2% to 8% of enhancer, 2% to 6% of lubricating agent, and the balance copper; low-temperature diffusion: conducting low-temperature diffusion on evenly-mixed powder in a diffusion furnace by means of nitrogen protection; compression molding: arranging the powder subjected to low-temperature diffusion in a mold for compression molding to form pressed blanks; sintering processing: sintering the pressed blanks in the N and H reducing atmosphere to form a sintered alloy body; finishing and surface polishing: pressing and reshaping the sintered alloy body by using a pressing mold; and oil-immersion processing: arranging a pressed member into a vacuum oil immersion machine to perform oil-immersion processing. By using the manufacturing method, mechanical slide noise of the oil-retaining bearing is reduced, and the service life of the oil-retaining bearing is prolonged.
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Inventors:
WANG CHUNGUAN (CN)
YANG ZHENZHI (CN)
CHEN LULU (CN)
YANG ZHENZHI (CN)
CHEN LULU (CN)
Application Number:
PCT/CN2015/092716
Publication Date:
December 29, 2016
Filing Date:
October 23, 2015
Export Citation:
Assignee:
HAIAN YINGQIU POWDER METALLURGY CO LTD (CN)
JIANGSU YINGQIU GROUP CO LTD (CN)
JIANGSU YINGQIU GROUP CO LTD (CN)
International Classes:
B22F5/00; B22F3/16
Foreign References:
CN101845568A | 2010-09-29 | |||
CN101775521A | 2010-07-14 | |||
CN101407889A | 2009-04-15 | |||
CN1288114A | 2001-03-21 | |||
CN104889409A | 2015-09-09 | |||
CN104879386A | 2015-09-02 | |||
JPH0552220A | 1993-03-02 |
Attorney, Agent or Firm:
BEIJING ZHILIN HENGYUAN IP FIRM (CN)
北京志霖恒远知识产权代理事务所(普通合伙) (CN)
北京志霖恒远知识产权代理事务所(普通合伙) (CN)
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