Manufacturing method of cast slab
The method optimizes slab production by setting light reduction areas, gradients, and cooling intensities to achieve consistent quality across varying slab sizes, addressing center segregation and defects, and enabling efficient production for diverse steel products.
JP7597281B1Active Publication Date: 2024-12-10JFE STEEL CORP
Patent Information
- Application Number
- JP2024552781
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2023-06-20
- Filing Date
- 2024-06-04
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2044-06-04
Smart Images
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Abstract
Provided is a method for producing a slab capable of obtaining a slab of appropriate quality. The method for producing a slab of a predetermined size using a continuous casting machine. The method for producing a slab includes a soft reduction region setting step for setting a soft reduction region including a start point for soft reduction of the slab in the continuous casting machine and an end point for soft reduction, based on the conditions of cooling water for cooling the slab in the continuous casting machine, the withdrawal speed of the slab, and the solid phase ratio of the slab calculated using the composition of the slab; a reduction gradient setting step for setting a reduction gradient in the soft reduction region, based on the thickness, width, and withdrawal speed of the slab; a secondary cooling intensity setting step for setting a first strength zone and a second strength zone in which secondary cooling is performed at an intensity stronger than that of the first strength zone, as zones in which secondary cooling is performed in the soft reduction region, based on the solid phase ratio of the slab; and a continuous casting step for performing continuous casting using the set soft reduction region, reduction gradient, first strength zone, and second strength zone.
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Citation Information
Patent Citations
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