Title:
PRODUCTION OF HIGH CLEANLINESS STEEL
Document Type and Number:
Japanese Patent JPH08100223
Kind Code:
A
Abstract:
PURPOSE: To produce a high cleanliness steel, such as cold die steel, steel for cutting tool, and high grade bearing steel, forming large amounts of carbide, having high hardness, reduced in oxygen content, and particularly reduced in oxide inclusions.
CONSTITUTION: A molten steel, after Al deoxidation in an electric furnace or in a ladle refining furnace, is subjected to ladle refining and then formed into a cast electrode, and electroslag remelting is done by using this electrode, by which a high C and high Cr steel ingot of ≤30ppm oxygen content is obtained. The desirable composition of the high C and high Cr steel ingot consists of, by weight, 0.5-1.6% C, ≤1.0% Si, ≤1.5% Mn, 10-18% Cr, and the balance Fe with inevitable impurities.
Inventors:
ONDA YASUHISA
MUKAI TAKASHI
KIHARA SHIGERU
TAKACHIO KIYOTAKA
MUKAI TAKASHI
KIHARA SHIGERU
TAKACHIO KIYOTAKA
Application Number:
JP23879494A
Publication Date:
April 16, 1996
Filing Date:
October 03, 1994
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
B22D23/10; C22B9/18; C22B9/187; C22C38/00; C22C38/24; (IPC1-7): C22B9/18; B22D23/10; C22B9/187; C22C38/00; C22C38/24
Attorney, Agent or Firm:
Oba Mitsuru