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Title:
METHOD FOR MANUFACTURING TURBINE MATERIAL
Document Type and Number:
Japanese Patent JP2018053332
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a turbine material in which the former austenite grain size has been refined by a heat treatment.SOLUTION: In the method for manufacturing a turbine material, a forging material having C:0.4% or less, Mn:0.2-0.6%, Si:0.5% or less, Ni:3.0-4.0%, Cr:1.0-2.0%, Mo:0.2-0.6%, and V:0.05-0.15% in weight, and the balance being Fe and inevitable impurities is prepared. The forging material for a turbine is subjected to, heating at a temperature of 825-950°C and subsequent cooling, for twice or more.SELECTED DRAWING: Figure 7

Inventors:
FUKUZAWA NORIHIDE
UENO TOMONORI
Application Number:
JP2016192795A
Publication Date:
April 05, 2018
Filing Date:
September 30, 2016
Export Citation:
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Assignee:
HITACHI METALS LTD
International Classes:
C21D9/00; B21J1/02; B21J5/00; C22C38/00; C22C38/46; F01D25/00
Domestic Patent References:
JP2016138320A2016-08-04
JP2000319749A2000-11-21
JPH0234724A1990-02-05
JPS62192536A1987-08-24
Foreign References:
US5108699A1992-04-28
CN104818432A2015-08-05



 
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