High corrosion resisting alloy for diesel engine valve and metho

Details High corrosion resisting alloy for diesel engine valve and metho High corrosion resisting alloy for diesel engine valve and metho

2000-01-05

2000-10-31

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148428, C22C 1905, C22F 110

Patent

active

061396605

ABSTRACT:
A high corrosion resisting alloy for use in inlet and exhaust valves of diesel engines which is low in cost and excellent in corrosion resistance and strength, which consists by weight percentage of C.ltoreq.0.1%, Si.ltoreq.1.0%, Mn.ltoreq.1.0%, 25%<Cr.ltoreq.32%, 2.0%<Ti.ltoreq.3.0%, 1.0%.ltoreq.Al.ltoreq.2.0% and the balance being Ni and incidental impurities. The valves for the diesel engines are manufactured through the steps of forging the above-mentioned alloy into near net shapes of the valves, performing aging treatment (after solid solution treatment according to demand), and further enhancing hardness of the valves at their valve faces locally through partial cold forging.

REFERENCES:
patent: 4741080 (1988-05-01), Larson et al.

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