Document Type and Number:
Japanese Patent JPWO2022034864
Kind Code:
A1
Abstract:
The present invention easily determines whether molten steel to be continuously cast is of a type that poses a cracking risk and optimizes operating conditions for continuous casting on the basis of the determination, thereby making it possible to improve productivity while preventing slab cracking and continuous casting trouble. The present invention involves pouring molten steel that is to be continuously cast into a test solidification device, cooling the molten steel to produce a test slab, and measuring the surface roughness of a lower surface of the test slab. When the surface roughness is at or above a prescribed threshold value, the molten steel is determined to be of a type that, when continuously cast, would produce slabs that would easily crack, and a slow-cooling mold powder that is suited to preventing cracking is used to perform the continuous casting. When the surface roughness is below the prescribed threshold value, the molten steel is determined to be of a type that, when continuously cast, would produce slabs that would not easily crack, and an intense-cooling mold powder that is suited to increasing casting speed is used to perform the continuous casting.
Application Number:
JP2022542839A
Publication Date:
February 17, 2022
Filing Date:
August 06, 2021
Export Citation:
Domestic Patent References:
| JP2012102359A | 2012-05-31 | |||
| JP2018176241A | 2018-11-15 | |||
| JP2011025278A | 2011-02-10 | |||
| JP2020015049A | 2020-01-30 | |||
| JP2019098403A | 2019-06-24 |
Foreign References:
| CN103990770A | 2014-08-20 | |||
| CN106289037A | 2017-01-04 |