A method for controlling corner cracks of a slab in a bending section of a continuous caster

By setting a water-blocking mechanism in the bending section of the continuous casting machine, the cooling zone can be precisely adjusted, which solves the problem of corner cracks in the billet and improves the quality of the billet.

CN120815943BActive Publication Date: 2026-07-03WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
Filing Date
2025-07-24
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Some slab continuous casting machines lack a slab cutting function in their bending sections, resulting in a high rate of corner cracks in the slabs. Traditional solutions are either costly or have low adjustment accuracy, and cannot meet the cooling requirements of the edges of various sections.

Method used

A water-blocking mechanism is installed in the bending section of the continuous casting machine, including an adjustable water-blocking plate, a baffle rod seat, and a nut stop. By partially blocking the water spray nozzles and coordinating with water volume adjustment, the cooling area can be precisely adjusted.

Benefits of technology

Without modifying the equipment, it significantly reduces corner cracks in the billet, improves billet quality, and meets the cooling requirements of the edges of various sections.

✦ Generated by Eureka AI based on patent content.

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    Figure CN120815943B_ABST
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Abstract

The application discloses a method for controlling slab corner cracks of a bending section of a continuous casting machine, and specifically comprises the following steps: S1, keeping the whole bending section water-permeable; S2, arranging water blocking mechanisms on the outer arc and the inner arc of the 3-4 zones in the bending section of the continuous casting machine, oppositely arranging the water blocking mechanisms on the outer arc and the inner arc, mounting the water blocking mechanisms on the bending section frame and arranging the water blocking mechanisms between the rollers of the bending section and corresponding water nozzles; arranging the water blocking mechanisms on the upper part and the lower part of the bending section in the vertical direction, and welding and fixing the water blocking mechanisms between the rollers and the water nozzles, covering two water nozzles of the 5th-17th rows of edge portions of the bending section in the pouring direction, wherein the second water nozzle of the edge portion blocks 50% of the spraying area; and S3, synchronously adjusting the water distribution of the bending section according to the total water volume of 90%-100% of the system and the secondary cooling specific water volume in the adjusting range of 0.6-1.2 L / kg to realize water distribution cooperation; and the method can precisely adjust the cooling area, thereby achieving the purpose of solving the slab corner cracks.
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