MANUFACTURE OF COLD ROLLED NONORIENTED ELECTROMAGNETIC STEEL SHEET

Title:

MANUFACTURE OF COLD ROLLED NONORIENTED ELECTROMAGNETIC STEEL SHEET

Document Type and Number:

Japanese Patent JPS613839

Kind Code:

A

Abstract:

PURPOSE: To manufacture a cold rolled nonoriented electromagnetic steel sheet by hot rolling a steel slab contg. specified amounts of C, Mn, Si and Al under specified conditions and by subjecting the hot rolled steel sheet to coiling, self- annealing, pickling, cold rolling and finich annealing.

CONSTITUTION: The silicon steel slab contg., by weight, <0.04% C, 0.1W1% Mn, <4% Si and <1% Al is hot rolled, and the hot rolled steel sheet is coiled at ≥700°C, self-annealed, pickled, cold rolled, and subjected to finish annealing to manufacture a cold rolled nonoriented electromagnetic steel sheet. At this time, after the hot rolled steel sheet is coiled, self-annealed and said sheet is held for 8minW1hr, and water-cooled.

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Inventors:

MATSUMURA HIROSHI
MORITA KAZUMI
KOBAYASHI YOSHINORI
OBATA YOSHIO
TANAKA TOSHIHIKO

Application Number:

JP12290884A

Publication Date:

January 09, 1986

Filing Date:

June 16, 1984

Export Citation:

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Assignee:

KAWASAKI STEEL CO

International Classes:

C21D8/12; (IPC1-7): C21D8/12

Attorney, Agent or Firm:

Akihide Sugimura

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