Title:
IMPROVING METHOD FOR TOUGHNESS OF STEEL MATERIAL
Document Type and Number:
Japanese Patent JPS544224
Kind Code:
A
Abstract:
PURPOSE: To improve the toughness of a steel material in casting of steel by increasing the cooling rate in an austenite formation process after solidification and carrying out rolling or forging without converting the austenite so as to make the austenite grains fine.
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Inventors:
OZAWA TSUTOMU
INOUE YASUSHI
INOUE YASUSHI
Application Number:
JP6840277A
Publication Date:
January 12, 1979
Filing Date:
June 11, 1977
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B22D11/124; B22D27/04; C21D7/13; C21D8/00; (IPC1-7): B22D11/12; B22D35/06; C21D6/00