Valve guide

Details Valve guide Valve guide

1990-04-30

1991-08-20

Dean, R.

Metal treatment

Compositions

Heat treating

2988841, 123188GC, 148 166, 148332, C21D 144, C22C 3816, F01L 300

Patent

active

050411683

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: 3808659 (1974-05-01), Alger, Jr. et al.
patent: 4103662 (1978-08-01), Kammeraad
patent: 4412873 (1983-11-01), Hone et al.
patent: 4671491 (1987-06-01), Kuroishi et al.
patent: 4767677 (1988-08-01), Kuwayama
Metals Handbook Desk Edition; Howard Boyer and Timothy Gall, editors: American Society for Metals, Metals Park, Ohio (1985), pp. 25-1, 25-12, and 25-13.

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