Title:
PRODUCTION OF COLD ROLLED STEEL SHEET WITH GOOD SURFACE PROPERTIES AND COLDABILITY
Document Type and Number:
Japanese Patent JPS52131922
Kind Code:
A
Abstract:
PURPOSE: To lower soluble nitrogen content of a steel plate and to make AlN particles large by hot rolling Al killed steel; coiling the hot rolled plate within a specified temperature range; and carrying out annealing at a temperature lower than conventional one, so as to obtain a cold rolled steel plate with good surface properties and press moldability.
Inventors:
TAKAHASHI MASASHI
OKAMOTO ATSUKI
HAYASHI YUTAKA
OKAMOTO ATSUKI
HAYASHI YUTAKA
Application Number:
JP4875076A
Publication Date:
November 05, 1977
Filing Date:
April 28, 1976
Export Citation:
Assignee:
SUMITOMO METAL IND
International Classes:
B21B3/00; B21B3/02; C21D6/00; C21D9/48; C22C38/00; C22C38/06; (IPC1-7): B21B3/02; C21D6/00; C21D7/14; C22C38/06
Previous Patent: JPS52131921
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