Valve guide

Details Valve guide Valve guide

1990-09-18

1991-11-05

Dean, R.

Metal treatment

Stock

Ferrous

123188GC, 148909, 420472, 428614, C22C 3816, F01L 300

Patent

active

050629085

ABSTRACT:
A valve guide and a method for the manufacture thereof are described. The valve guide is a tubular article having a length to outer diameter ratio greater than about 1.5 and is made of a ferrous material by a PM route. The pressed guide is infiltrated by preparing a sheet of the infiltrant alloy, rolling the sheet into a cylinder and inserting it into the guide bore followed preferably by, simultaneous sintering and infiltration.

REFERENCES:
patent: 2775024 (1956-12-01), Seal
patent: 4103662 (1978-08-01), Kammeraad
patent: 4344795 (1982-08-01), Endo et al.
patent: 4412873 (1983-11-01), Hone et al.
patent: 4586967 (1986-05-01), Shapiro et al.
patent: 4769071 (1988-09-01), Klar et al.

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