High-strength and wear-resisting iron based powder metallurgic bearing

The invention discloses a high-strength and wear-resisting iron based powder metallurgic bearing. The high-strength and wear-resisting iron based powder metallurgic bearing is characterized by comprising components of materials in percentage by weight as follows: 16.0%-18.0% of copper, 0.80%-0.90% o...

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Bibliographic Details
Main Authors REN GANGQIANG, SUN BENSONG, ZHANG DONG, XU WEI, LI QILONG
Format Patent
LanguageEnglish
Published 22.07.2015
Subjects
ALLOYS
CASTING
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
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Summary:The invention discloses a high-strength and wear-resisting iron based powder metallurgic bearing. The high-strength and wear-resisting iron based powder metallurgic bearing is characterized by comprising components of materials in percentage by weight as follows: 16.0%-18.0% of copper, 0.80%-0.90% of carbon, 0.01%-1.0% of cerium fluoride and the balance of iron, and the total quantity of impurities is not higher than 2%. A manufacturing technology of the iron based powder metallurgic bearing comprises steps as follows: powder mixing, pressing, sintering, heat treatment and vacuum oil immersion. The iron based powder metallurgic bearing has high strength and high wear resistance, the crushing strength is in a range of 720 MPa-780 MPa, the Rockwell hardness is in a range of 90 HRB-110 HRB, the oil content is 13%-16%, and the oil lubrication friction coefficient is in a range of 0.08-0.09; the high-strength and wear-resisting iron based powder metallurgic bearing is used for engineering machinery such as oil cylinders of an excavator and a bulldozer.
Bibliography:Application Number: CN20151154619