Title:
NI-CONTAINING STEEL FOR LOW TEMPERATURE USE AND SECONDARY COOLING METHOD OF ITS CONTINUOUSLY CAST SLAB
Document Type and Number:
Japanese Patent JP2833442
Kind Code:
B2
Abstract:
PURPOSE: To produce an Ni-containing steel for low temp. use, hardly causing surface flaw of cast slab at the time of continuous casting.
CONSTITUTION: This Ni-containing steel for low temp. use has a composition consisting of, by weight, ≤0.1% C, ≤0.5% Si, ≤1.0% Mn, 5.5-10% Ni, ≤0.0020% P, ≤0.0020% S, 0.005-0.020% Al, 0.0020-0.0040% N, and the balance Fe with inevitable impurities. Further, either or both of 0.005-0.020% Ti and ≤0.20% Mo are incorporated, if necessary. At the time of continuously casting this Ni-containing steel for low temp. use, cooling is done through the region where the surface temp. of cast slab becomes 850-600°C so that straightening stress is not applied.
Inventors:
KATO TOORU
OKAGUCHI HIDEJI
OKAGUCHI HIDEJI
Application Number:
JP25948493A
Publication Date:
December 09, 1998
Filing Date:
September 23, 1993
Export Citation:
Assignee:
SUMITOMO KINZOKU KOGYO KK
International Classes:
B22D11/124; C22C38/00; C22C38/08; (IPC1-7): C22C38/00; B22D11/124; C22C38/08
Domestic Patent References:
| JP54169B2 |
Attorney, Agent or Firm:
Terutaka Hogami (1 person outside)