Turbine rotor heat treatment process

Details Turbine rotor heat treatment process Turbine rotor heat treatment process

2007-05-15

2007-05-15

Sheehan, John P. (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

C148S676000, C148S677000

Reexamination Certificate

active

10604633

ABSTRACT:
A method of heat treating a turbine rotor disk to obtain different radial properties at different locations in the rotor disk includes a) heating the rotor disk for a period of from 4 to 10 hours at a temperature of 1800° F.; b) cooling the rotor disk to a temperature of about 1550° F.; c) holding the rotor disk at about 1550° F. for a period of from about 2 to about 4 hours; d) cooling the rotor disk to room temperature; e) precipitation aging the rotor disk by heating the rotor disk to temperature of 1325° F. for 8 hours, holding it at 1150° F. for 8 hours, and f) cooling the rotor disk.

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