Title:
大形鍛造鍛造品の製造方法
Document Type and Number:
Japanese Patent JP5284555
Kind Code:
B2
Abstract:
A process for forging large components of Alloy 718 material so that the components do not exhibit abnormal grain growth includes the steps of: a) providing a billet with an average grain size between ASTM 0 and ASTM 3; b) heating the billet to a temperature of between 1750 DEG F and 1800 DEG F; c) upsetting the billet to obtain a component part (24) with a minimum strain of 0.125 in at least selected areas of the part; d) reheating the component part (24) to a temperature between 1750 DEG F and 1800 DEG F; e) upsetting the component part (24) to a final configuration such that said selected areas receive no strains between .01 and 0.125; f) solution treating the component part (24) at a temperature of between 1725 DEG F and 1750 DEG F; and g) aging the component part (24) over predetermined times at different temperatures. A modified process achieves abnormal grain growth in selected areas of a component where desirable.
Inventors:
Samuel Buoy Somebo
Lin Yang
Lin Yang
Application Number:
JP2000212584A
Publication Date:
September 11, 2013
Filing Date:
July 13, 2000
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
B21J5/08; C22F1/10; B21J1/06; B21J5/00; C21D7/13; C22C19/05; C22F1/00
Domestic Patent References:
| JP261018A | ||||
| JP953138A | ||||
| JP93577A | ||||
| JP1284449A | ||||
| JP63114951A |
Attorney, Agent or Firm:
Arakawa Satoshi
Hiroshi Ogura
Toshihisa Kurokawa
Takuto Tanaka
Hiroshi Ogura
Toshihisa Kurokawa
Takuto Tanaka