US 6,932,877 B2 · Quasi-isothermal forging of a nickel-base superalloy

Abstract

A forging blank of a forging nickel-base superalloy is forged in a forging press having forging dies made of a die nickel-base superalloy. The forging is accomplished by heating the forging blank to a forging-blank starting temperature of from about 1850° F. to about 1950° F., heating the forging dies to a forging-die starting temperature of from about 1500° F. to about 1750° F., placing the forging blank into the forging press and between the forging dies, and forging the forging blank at the forging-blank starting temperature using the forging dies at the forging-die starting temperature, to produce a forging.

Claims17

Dependent claims

A method for forging a superalloy, comprising the steps of

providing a forging blank of a forging nickel-base superalloy;
providing a forging press having forging dies made of a die nickel-base alloy;
heating the forging blank to a forging-blank starting temperature of from about 1850° F. to about 1950° F.;
heating the forging dies to a forging-die starting temperature of from about 1500° F. to about 1750° F.;
placing the forging blank into the forging press and between the forging dies;
and
forging the forging blank at the forging-blank starting temperature using the forging dies at the forging-die starting temperature, to produce a forging.

4 more elements

A method for forging a superalloy, comprising the steps of

providing a forging blank of a nickel-base alloy consolidated powder;
providing a forging press having forging dies made of a die nickel-base superalloy;
heating the forging blank in air to a forging-blank starting temperature of from about 1850° F. to about 1950° F.;
heating the forging dies in air to a forging-die starting temperature of from about 1500° F. to about 1750° F.;
placing the forging blank into the forging press and between the forging dies;
and
forging the forging blank at the forging-blank starting temperature using the forging dies at the forging-die starting temperature, in air, and at a nominal strain rate of greater than about 0.02 per second, to produce a forging which is a precursor of gas turbine engine component.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/286,579Filed 31 Oct 2002

Published

US 2004/0084118 A16 May 2004

Granted

23 Aug 2005

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

C22F 1/10
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working: of nickel or cobalt or alloys based…
B21J 1/06
Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling: heating or cooling methods or…
B21J 5/00
Methods for forging, hammering, or pressing
C22F
Changing the physical structure of non-ferrous metals and non-ferrous alloys

Quasi-isothermal forging of a nickel-base superalloy

Life of this patent

Quasi-isothermal forging of a nickel-base superalloy

Life of this patent

Abstract

Claims17