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Title:
CONTINUOUS CASTING METHOD OF WEAR-RESISTANT STEEL AND WEAR-RESISTANT STEEL OBTAINED BY THE SAME
Document Type and Number:
Japanese Patent JP2012223807
Kind Code:
A
Abstract:

To provide a continuous casting method of a wear-resistant steel in which in continuously casting a wear-resistant steel containing Ti, even the reduction reaction of SiO2 in a mold powder by Ti in a molten steel progresses and SiO2 in the mold powder decreases, the viscosity rise after the mold powder melts is suppressed, and the molten steel is made to enter between a mold and a solidified shell, thereby a surface defect of a longitudinal crack, slag inclusion, a gas catching bubble or the like can be prevented, and to provide the wear-resistant steel obtained by the same.

In the continuous casting method continuously casting the molten steel of the wear-resistant steel having a composition containing C and Ti in a prescribed amount, a mold that performs the continuous casting is vibrated by the amplitude of 3.0-9.0 mm, the frequency of at least 60 times/minute and less than 120 times/minute, the mold powder containing 0.1-0.5 mass% of a fatty acid is injected in the mold, the casting speed is made 0.6-1.0 m/minute, and the continuous casting is performed.


Inventors:
AWAJIYA HIROSHI
MUROTA YASUHIRO
TSUTSUMI KOICHI
SUGA TAKUYA
Application Number:
JP2011095268A
Publication Date:
November 15, 2012
Filing Date:
April 21, 2011
Export Citation:
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Assignee:
JFE STEEL CORP
International Classes:
B22D11/00; B22D11/051; B22D11/108; B22D11/20; C22C38/00; C22C38/14; C22C38/38
Attorney, Agent or Firm:
Eiichi Kobayashi
Suzuki Yoko