Impact of Oscillation Parameters on Surface Quality of Cast Billets

Archives of Metallurgy and Materials

D. Bocek¹  J. Cibulka¹  R. Krzok¹  R. Hermann¹  J. Cupek¹  K. Michalek² 

[1] T?inecké železárny a.s , Pr?myslová 1000, T?inec - St aré M?sto, Czech Republic;VŠB-Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Department of Metallurgy and Foundry, and Regional Materials Science and Technology Centre, 17. listopadu 15/2172, Ostrava-Poruba, Czech Republic

关键词: Keywords: continuous casting of steel;    mould oscillation;    peritectic steel grades;    billet surface quality;   

DOI  :  10.1515/amm-2016-0054

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The paper is focused on impact of different oscillation parameters on surface quality of peritectic steel grades cast into billets 150x150 mm. Hydraulic oscillation used for this purpose was temporarily installed on one strand of the billet caster. Hydraulic oscillation enables, in comparison to ordinary used electromechanical oscillation, flexible set-up of basic parameters of the oscillation cycle (negative strip time and its ratio). Proper oscillation mode is capable to assure regular oscillation marks development, good lubrication in the mould and adequate compression of the solidifying shell. Impact of an oscillation mode providing negative strip time 0.085 s and its ratio -50 % on surface quality of cast billets is compared with standard oscillation mode applied on strands equipped with electromechanical oscillation characterized with variable negative strip time between 0.084 and 0.096 s and fixed negative strip ratio to -14 %.

【 授权许可】

Unknown