A Study of Intermix in a Six-Strand Billet Caster

被引：4

作者：

Amorim, Laudinei L. C. ^{[1
]}

Silva, Carlos. A. ^{[2
]}

Resende, Alexandre D. ^{[3
]}

Silva, Itavahn A. ^{[2
]}

Oliveira, Marivaldo J. M. ^{[2
]}

机构：

[1] Gerdau Ouro Branco Works, Rod MG 443,Km 7, BR-36420000 Ouro Branco, MG, Brazil

[2] Univ Fed Ouro Preto, Met Engn Dept, BR-35400000 Ouro Preto, MG, Brazil

[3] RHI Magnesita, Praca Louis Ensch,240 Cidade Ind, BR-32210902 Contagem, MG, Brazil

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2018年 / 49A卷 / 12期

关键词：

CONTINUOUS-CASTING TUNDISHES; GRADE TRANSITION; LADLE CHANGEOVER; MODEL; SLAB; FLOWS;

D O I：

10.1007/s11661-018-4915-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The purpose of this study was to develop an integrated intermix model suitable for a six-strand billet caster. Mathematical and physical simulations were performed in order to compare intermixing under the current procedure with alternative approaches. Plant data were collected, including different operational strategies regarding the tundish weight at holding level, to validate the findings. Additionally, samples were taken from the billets to understand the nature of strand mixing in small sections. The effect of tundish level during the holding procedure was evaluated. It was determined that the most pronounced effect on intermixing was caused by the difference in superheat between the old and new grades. The model will be used to reduce steel downgrade resulting from grade intermixing and for scheduling of intermix sequences.

引用

页码：6308 / 6324

页数：17

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