Title:
METHOD FOR MANUFACTURING Ni-BASE SUPERALLOY INGOT COMPOSED OF LITTLE COMPONENT SEGREGATION AND UNIFORMLY FINE CRYSTAL GRAIN
Document Type and Number:
Japanese Patent JP3791395
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing an Ni-base superalloy ingot composed of little component segregation and uniformly fine crystal grains, which is used as a blank for manufacturing forged parts used for gas turbine such as a jet engine for aircraft, e.g. a turbine disk, a turbine shaft, etc.
SOLUTION: In this manufacturing method, a shallow pool 5 of the molten Ni-base superalloy ingot is formed by remelting a VIM ingot obtained by high frequency induction vacuum melting or an ESR ingot 2 obtained by electro-slag remelting after the high frequency induction vacuum melting using an electron beam 3. Then, after adding metal powder 4 while holding a molten metal state having a prescribed temperature by irradiating the shallow pool 5 of the molten Ni-based superalloy with an electron beam 31, the Ni-base superalloy ingot composed of little component segregation and uniformly fine crystal grains is immediately manufactured.
Inventors:
Takanori Matsui
Kimiaki Kato
Hiroaki Kikuchi
Kimiaki Kato
Hiroaki Kikuchi
Application Number:
JP2001340333A
Publication Date:
June 28, 2006
Filing Date:
November 06, 2001
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
B22D27/02; F01D5/28; B22D7/00; B22D7/06; B22D11/041; B22D21/00; B22D23/02; B22D23/06; B22D27/20; C22C19/05; F01D25/00; (IPC1-7): B22D27/02; B22D7/00; B22D7/06; B22D11/041; B22D21/00; B22D23/02; B22D23/06; B22D27/20; F01D5/28; F01D25/00; //C22C19/05
Domestic Patent References:
| JP63112043A | ||||
| JP63080951A | ||||
| JP2003136202A | ||||
| JP59179728A |
Attorney, Agent or Firm:
Kazuo Tomita
Kutaro Kamoi
Kutaro Kamoi
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