Method and related apparatus for determining continuous casting cooling intensity using dendrite size

By taking low-magnification samples of the billet under steady-state continuous casting conditions, identifying the grain size abrupt change zone and calculating the comprehensive solidification coefficient, the problem of the inability of existing technologies to diagnose cooling intensity with high precision is solved. This achieves low-cost, no-modification cooling intensity diagnosis, and is applicable to various types of billet continuous casting machines.

CN122306639APending Publication Date: 2026-06-30新余钢铁股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
新余钢铁股份有限公司
Filing Date
2026-04-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies have significant shortcomings in terms of safety, economy, universality, and zone analysis capabilities, and cannot meet the needs of billet continuous casting machines for low-cost, no-modification, full-zone, and high-precision cooling intensity diagnosis.

Method used

By taking low-magnification samples of the billet under steady-state continuous casting conditions, identifying the grain size abrupt change zone, measuring the distance from it to the edge of the low-magnification sample, and using the solidification heat transfer model to calculate the comprehensive solidification coefficient at the junction of the two cooling zones, equipment maintenance and process optimization can be carried out.

Benefits of technology

It achieves high-precision cooling intensity diagnosis without the need for new equipment or modification of the secondary cooling system, reducing testing costs. It is applicable to various billet continuous casting machines, breaking through the limitations of machine type and installation conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a method and related apparatus for determining the cooling intensity of continuous casting using dendrite size. The method includes: determining the casting of a billet under steady-state continuous casting conditions; taking a low-magnification sample from the billet; identifying at least one grain size abrupt change zone in the low-magnification sample; measuring the distance from the grain size abrupt change zone to the edge of the low-magnification sample; determining the distance from the boundary of the secondary cooling zone corresponding to the grain size abrupt change zone to the meniscus of the crystallizer; calculating the comprehensive solidification coefficient of the distance from the boundary of the secondary cooling zone corresponding to the grain size abrupt change zone to the meniscus of the crystallizer using a solidification heat transfer model; and performing continuous casting equipment maintenance and process optimization based on the comprehensive solidification coefficient. This method requires no new equipment or modification of the secondary cooling system and can be implemented through conventional low-magnification inspection, fundamentally eliminating the safety risks of nail gun testing, significantly reducing testing costs, and achieving quantitative differentiation and precise positioning of the cooling intensity of each cooling zone.
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