Title:
METHOD FOR CONTINUOUS CASTING OF SLAB
Document Type and Number:
Japanese Patent JP2022189395
Kind Code:
A
Abstract:
To provide a method for continuous casting of a slab that can avoiding inner cracks by restraining recuperation in secondary cooling.SOLUTION: A method for manufacturing a cast piece 1 composed of steel containing C of 0.08 to 0.29 mass% with a vertical-bend continuous casting machine 10. The casting machine 10 includes, in this order: a casting mold 13; a vertical part 51 connected downstream of the casting mold 13 and extending in a vertical direction: a bent part 52 connected downstream of the vertical part 51 and having a radius of curvature which is gradually smaller toward the downstream side; a curved part 53 connected downstream of the bend part 52 and having a constant radius of curvature; a correction part 54 connected downstream of the curved part 53 and having a radius of curvature which is gradually larger toward the downstream side; and a horizontal part 55 connected downstream of the correction part 54 and extending in a horizontal direction. When the casting piece 1 is extracted at a casting speed of less than 1.1 m/min, cooling is performed so that a temperature rise of the casting piece 1 is less than 15°C on the downstream side of the curved part 53.SELECTED DRAWING: Figure 1
Inventors:
KATAYAMA MIYU
Application Number:
JP2021097948A
Publication Date:
December 22, 2022
Filing Date:
June 11, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B22D11/00; B22D11/124
Attorney, Agent or Firm:
Patent Attorney Corporation Britus