Original scientific paper

Influence of the speed of downward semi-continuous casting on the crystal size and mechanical properties of recycled copper

M. Maleta ; Łukasiewicz Research Network – Institute of Non-Ferrous Metals, Gliwice, Poland
W. Głuchowski ; Łukasiewicz Research Network – Institute of Non-Ferrous Metals, Gliwice, Poland
Z. Rdzawski ; Łukasiewicz Research Network – Institute of Non-Ferrous Metals, Gliwice, Poland
M. Łagoda ; Łukasiewicz Research Network – Institute of Non-Ferrous Metals, Gliwice, Poland
J. Domagała-Dubiel ; Łukasiewicz Research Network – Institute of Non-Ferrous Metals, Gliwice, Poland

Abstract

In this study, the influence of the speed of downward semi-continuous casting on the crystal size and mechanical properties of recycled copper after casting and cold deformation was investigated. It was shown that the increase in the casting speed from 0,09 m / min to 0,22 m / min resulted in refinement of the macrostructure and reduction of the crystal cross-sectional area from 3,221 mm2 to 1,2 mm2, which resulted in an increase in microhardness after casting by 8 %, while in the state after cold working, an increase in microhardness by 3 % and ultimate tensile strength by 2,5 %.

Keywords

copper; semi-continuous casting; macrostructure; crystal size; mechanical properties

Hrčak ID:

300998

URI

https://hrcak.srce.hr/300998

Publication date:

3.7.2023.

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