Title:
MANUFACTURE OF HIGH SI STEEL MATERIAL
Document Type and Number:
Japanese Patent JPS61170509
Kind Code:
A
Abstract:
PURPOSE: To prevent the formation of a decarburized ferrite layer as a surface layer when a high Si steel material is manufactured by hot rolling a steel billet, by heating the steel billet to a specified surface temp., cooling it to a specified temp. at a specified cooling rate, carrying out hot rolling and cooling the resulting material at a specified cooling rate.
CONSTITUTION: A high Si steel material contg. 0.7W3wt% Si is manufactured by hot rolling a steel billet. At this time, the steel billet is heated to ≥1,070°C surface temp. and cooled to 950°C at ≥50°C/sec cooling rate, hot rolling is carried out and the resulting material is cooled to 700°C at ≥30°C/min cooling rate.
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Inventors:
TAKADA KATSUNORI
NAGANUMA HIDEYUKI
NAGANUMA HIDEYUKI
Application Number:
JP1036885A
Publication Date:
August 01, 1986
Filing Date:
January 22, 1985
Export Citation:
Assignee:
DAIDO STEEL CO LTD
International Classes:
C21D8/00; C21D6/00; (IPC1-7): C21D6/00
Attorney, Agent or Firm:
Yutaka Oshio