Title:
CONTINUOUS CASTING METHOD FOR STEEL
Document Type and Number:
WIPO Patent Application WO/2020/122061
Kind Code:
A1
Abstract:
In a first cooling zone (21) on the upper side of a vertical section (20), an air-water ratio A1/R1 defined by a water amount R1 (L/min) and an air amount A1 (L/min) per one cooling spray nozzle is set to 10 or more, an impinging pressure of cooling water colliding with the surface of a slab (1) from the cooling spray nozzle is set to 12 gf/cm2 or more, a cooling intensity W1 × t1 defined by a cooling water density W1 (L/min/m2) and a passing time t1 (min) of the first cooling zone (21) is set to 350 or more, and a reheating time from the passage of the first cooling zone (21) to a bent portion (30) is set to 0.5 min or more.
Inventors:
TAKAYA SHIN (JP)
MURAKAMI TOSHIHIKO (JP)
MURAKAMI TOSHIHIKO (JP)
Application Number:
PCT/JP2019/048269
Publication Date:
June 18, 2020
Filing Date:
December 10, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B22D11/124; B22D11/22
Foreign References:
| JP2018099704A | 2018-06-28 | |||
| JP2014050873A | 2014-03-20 | |||
| JP2010253525A | 2010-11-11 | |||
| JP2011131242A | 2011-07-07 | |||
| JP2000237858A | 2000-09-05 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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