Method of producing a mechanical component with superior fatigue

Details Method of producing a mechanical component with superior fatigue Method of producing a mechanical component with superior fatigue

1989-08-25

1990-11-13

Rosenberg, Peter D.

Metal treatment

Compositions

Heat treating

148 12F, C21D 714

Patent

active

049699571

ABSTRACT:
A method of producing a mechanical component with superior fatigue strength comprises the steps of casting melted ferrous alloy which includes carbon within the range of 0.3% to 0.45% by weight, silicon within the range of 1.3% to 2.0% by weight, chromium within the range of 5.0% to 6.0% by weight, molybdenum within the range of 1.0% to 1.5% by weight, vanadium within the range of 0.8% to 1.2% by weight, manganese not more than 0.5% by weight, and iron of the major remainder, into an untreated mechanical component by the use of a casting mold formed through a lost-wax process; annealing the untreated mechanical component to produce an unfinished mechanical component; machining roughly the unfinished mechanical component having been annealed; quenching and tempering in sequence the unfinished mechanical component having been roughly machined; and finishing the unfinished mechanical component having been quenched and tempered to obtain a finished mechanical component.

REFERENCES:
patent: 4406711 (1983-09-01), Nagumo
patent: 4720307 (1988-01-01), Matsumoto

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