Tundish dam structure with flow guide

By using the P-type tundish baffle structure and the guide pipe design, the problem of incomplete removal of inclusions in the existing technology has been solved, and the purification of molten steel and the production of high-purity steel have been achieved.

CN118699348BActive Publication Date: 2025-10-24NANJING IRON & STEEL CO LTD
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Patent Information

Application Number
CN202410743721.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-06-11
Publication Date
2025-10-24
Estimated Expiration
2044-06-11

AI Technical Summary

Technical Problem

The existing V-shaped retaining wall structure cannot effectively remove inclusions in the tundish during continuous casting, causing some inclusions to enter the casting zone and affecting the production of high-purity steel.

Method used

The P-type tundish retaining wall structure, combined with the design of guide holes and guide pipes, reduces turbulence in the molten steel in the impact zone. Some inclusions float to the surface in this area, while the inclusions that do not float to the surface enter the casting zone through the guide pipes to form a horizontal laminar flow, which promotes secondary aggregation and floating, avoiding the stopper rod and tundish wall, and forming a circulating flow to purify the molten steel.

Benefits of technology

It improves the removal of inclusions in the tundish, reduces the erosion of refractory materials, enhances the purity of molten steel, and promotes the production of high-purity steel.

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Abstract

The application discloses a tundish dam structure with a flow guide pipe, which comprises a straight wall, a flow guide hole, a side wall, a dam and a flow guide pipe. The straight wall, the side wall and the dam are an integrated structure, and the integrated structure is embedded in the inner wall of the tundish at both ends. The straight wall in the inner cavity of the dam is provided with a plurality of flow guide holes, and the flow guide pipe is embedded on the flow guide hole. The application effectively promotes the removal of inclusions in the impact area and the casting area of the tundish.
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