Solution heat treated engine poppet valves

Details Solution heat treated engine poppet valves Solution heat treated engine poppet valves

1986-09-03

1988-03-01

Brody, Christopher W.

Metal treatment

Stock

Ferrous

148325, 148902, 123188AA, F01L 300

Patent

active

047283742

ABSTRACT:
A new solution heat treated engine poppet valve has been developed which has a microstructure characterized by a large grain size in the head for optimum high temperature creep and fatigue properties and a finer grain size in the stem for good low temperature strength and fatigue properties.

REFERENCES:
patent: 1347542 (1920-07-01), Hilty
patent: 1925116 (1933-09-01), Spence et al.
patent: 2888373 (1959-05-01), Cherrie et al.
patent: 3536053 (1970-10-01), Vitcha et al.
patent: 3607461 (1971-09-01), Stanley et al.
patent: 3615927 (1971-10-01), Paulson
patent: 3636605 (1969-10-01), Vitcha et al.

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