System and method for measuring and predicting real initial setting blank shell thickness in crystallizer

Abstract

The invention provides a system and method for measuring and predicting the real initial setting billet shell thickness in a crystallizer. The system comprises an information acquisition module, a bleed-out billet shell microstructure measurement module, a crystallizer initial setting billet shell thickness growth prediction module and a result output module. The method comprises the following steps: collecting equipment parameters and process parameters of the continuous casting crystallizer; eroding a microcosmic solidification structure of a bleed-out billet shell; dividing the thicknessesof a steady-state billet shell layer, an extra solidification layer and an adhesion layer in the bleed-out billet shell; establishing a bleed-out process model, solving the molten steel descending rate and the bleed-out time, calculating the thickness of an adhesion layer in combination with casting blank heat transfer, and then calculating the thickness of a steady-state blank shell layer and thethickness of an additional solidification layer through solidification coefficients; and outputting and displaying the measured and predicted real initial setting blank shell thickness in the crystallizer. According to the invention, the real initial setting billet shell thickness in the crystallizer can be accurately measured and predicted through continuous casting of the bleed-out billet shell.

Description

technical field [0001] The invention belongs to the technical field of metallurgical process production, and in particular relates to a system and method for measuring and predicting the thickness of the real initial solidified slab shell in a crystallizer. The system and method are completed by using the continuous casting breakout slab shell. Background technique [0002] The continuous casting mold is a bottomless copper mold with forced cooling, which plays a vital role in the continuous casting process and is called the "heart" of the continuous casting machine. Liquid steel with a certain degree of superheat flows into the mold from the tundish through the nozzle, and under the action of the cooling water of the mold, an initial solid shell with a certain thickness and regular shape is formed. The uniformity of the shell of the primary solidification in the mold is closely related to the surface defects of the slab such as sags, diamond changes, and deviation angle cra...

AI Technical Summary

Problems solved by technology

Due to the lack of a more accurate collection method for the solidification information of the breakout shell, the utilization value of the breakout shell is greatly reduced

Images