Sintered metal parts and their production method

Details Sintered metal parts and their production method Sintered metal parts and their production method

Filed on

1991-10-09

Date issued

1993-11-09

Examiner

Walsh, Donald P.

Patent Class

Specialized metallurgical processes, compositions for use therei

SubClass

Compositions

SubSubClass

Consolidated metal powder compositions

Other Related Categories

75243, 75244, 75246, 419 11, 419 12, 419 13, 419 19, 419 38, 419 66, C22C 2900

Type

Patent

Status

active

Patent number

052598608

Description

ABSTRACT:
A sintered metal part has a magnesium metasilicate mineral, or a magnesium metasilicate mineral and a magnesium orthosilicate mineral, or at least one of a magnesium metasilicate mineral and a magnesium orthosilicate mineral and at least one of boron nitride and manganese sulfide dispersed throughout the metal matrix. An iron-based sintered sliding member is of a structure that free graphite and an intercrystalline inclusion have been dispersed throughout the metal matrix that consists essentially of, in weight ratio, 1.5 to 4% of carbon, 1 to 5% of copper, 0.1 to 2% of tin, 0.1 to 0.5% of phosphorus, 0.5 to 2% of an intercrystalline inclusion and the balance of Fe and has a mixed structure of a pearlite matrix with a steadite phase, the intercrystalline inclusion being a magnesium metasilicate mineral, or a magnesium metasilicate mineral and a magnesium orthosilicate mineral, or at least one of a magnesium metasilicate mineral and a magnesium orthosilicate mineral and at least one of boron nitride and manganese sulfide.

REFERENCES:
patent: 3754891 (1973-08-01), Bryk et al.
patent: 3844800 (1974-10-01), Hooton
patent: 4623590 (1986-11-01), Hodes et al.
patent: 4946499 (1990-08-01), Sakuranda et al.
patent: 5127939 (1992-07-01), Panigrahy et al.

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