A segregation behavior prediction method for a bloom convex roller under continuous casting heavy pressure

Abstract

The invention belongs to the field of bloom continuous casting production in the ferrous metallurgy industry, and particularly relates to a bloom convex roller continuous casting heavy pressure segregation behavior prediction method, which comprises the following steps: accurately describing the bloom shell morphology in the bloom continuous casting process, accurately describing the bloom shell surface speed in the bloom continuous casting process, and finally carrying out multi-phase solidification model coupling calculation. High speed, different casting in the implementation process of heavy pressing of the continuous casting solidification tail end convex roller is realized with high efficiency and high precision; quantitative calculation is performed on the internal macrosegregationbehavior of the large square billet under the reduction process condition, the improvement mechanism of reduction deformation on solidification and segregation of the large square billet in the heavyreduction process of the convex roller is explained, and reliable theoretical support is provided for stable production of the high-homogeneity casting billet.

Description

technical field [0001] The invention belongs to the field of continuous casting production of blooms in the iron and steel metallurgy industry, and in particular relates to a method for predicting segregation behavior of blooms under continuous casting with convex rolls under heavy pressure. Background technique [0002] As a typical internal quality problem, the macro-segregation defect inside the continuous casting bloom cannot be effectively removed by means of rolling and post-processing, which seriously affects the mechanical properties of the final rolled product. At present, the heavy reduction technology of the convex roll at the solidification end of the continuous casting bloom is one of the most effective technical means to replace the traditional light reduction technology. Compared with the traditional light reduction technology, the heavy reduction technology at the end of solidification of the bloom can effectively promote the reverse flow and secondary distri...

AI Technical Summary

Problems solved by technology

However, this technology is still in the industrial experimental research, and the quantitative prediction of the bloom segregation behavior in the convex roll reduction process has not been introduced.

[0007] At present, there are many related technical patents on the reduction process and equipment design, but there are few reports on the quantitative prediction method of the macro-segregation behavior of the slab during the reduction process of the convex roll at the solidification end

Images