Title:
MANUFACTURE OF NONMAGNETIC HIGH-MANGANESE STEEL
Document Type and Number:
Japanese Patent JPS5782452
Kind Code:
A
Abstract:
PURPOSE: To obtain a high-Mn steel of high quality with an inexpensive Mn source by adding ferroalloy to a molten low-C low-P steel while arc-heating the molten alloy to adjust each of the C, Si, Mn and N contents to a prescribed percentage.
CONSTITUTION: A molten low-C low-P steel is well freed of slag and discharged into a ladle. The ladle is carried in a vaccum arc degassing apparatus, where the molten steel is arc-heated from the upper part of the ladle and agitated by blowing an inert gas from the nozzle. Ferromanganese is then added to the molten steel to adjust the C, Si, Mn and N contents to ≤1.5% C, 0.1W1.5% Si, 5W30% Mn and 0.005W0.5% N. Thus, a high-Mn steel having the desired composition is obtd.
Inventors:
ADACHI TAKAHIKO
TAKANO MASASHI
SAKURABA KAZUMASA
TANABE TADASHI
IEMURA KAZUYA
TAKANO MASASHI
SAKURABA KAZUMASA
TANABE TADASHI
IEMURA KAZUYA
Application Number:
JP15684680A
Publication Date:
May 22, 1982
Filing Date:
November 06, 1980
Export Citation:
Assignee:
SUMITOMO METAL IND
International Classes:
C21C7/00; C22C33/04; C22C38/00; C22C38/04; (IPC1-7): C21C7/00; C22C33/04; C22C38/04
Domestic Patent References:
| JPS53137813A | 1978-12-01 |