Multi-point continuous measurement and simulation method for solidification heat transfer process of molten steel in continuous casting crystallizer

Abstract

The invention discloses a multi-point continuous measurement and simulation method for a solidification heat transfer process of molten steel in a continuous casting crystallizer. Based on temperature distribution data measured in real time by a copper plate thermocouple of a slab casting machine crystallizer, the instantaneous heat flow density boundary condition of the crystallizer in unit areais converted by using casting machine parameters, steel grade data parameters and production process parameters, so that the solidification heat transfer process of the molten steel in the crystallizer is calculated. The method is simple, convenient, feasible, high in practicability and high in reliability, can be used for on-line multi-point continuous measurement of the solidification heat transfer process of the molten steel in the slab casting machine crystallizer, and provides a convenient path for regulation of a continuous casting production process in large-scale production.

Description

technical field [0001] The invention relates to the technical field of continuous casting, in particular to an online multi-point continuous measurement method for simulating the solidification and heat transfer process of high-temperature molten steel in a continuous casting crystallizer. Background technique [0002] As the heart of continuous casting, the continuous casting process in the mold is a complex process associated with phenomena such as heat transfer, solidification, flow and solute redistribution. The phenomena are interrelated and interact with each other, which makes the heat transfer behavior in the crystallizer extremely complicated. However, the heat transfer process of molten steel in the mold has a very important influence on the quality of the slab. Uneven heat transfer rate is likely to cause cracks in the billet; in addition, if the heat transfer is insufficient, it is easy to cause the thinner billet shell to bulge, deform, or even leak. The solid...

AI Technical Summary

Problems solved by technology

However, this offline simulation method is often unable to cope with possible emergencies in actual production.

For example, the continuous casting mold under high temperature heat load is under the influence of high temperature molten steel, solidified billet, solid liquid slag, mold vibration, cooling water and many other factors, which may easily cause unstable solidification heat transfer, which is not conducive to continuous production

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