Protváření plynule litého polotovaru na laboratorní válcovně

Abstract

The main aim of this bachelor thesis is to design an optimal approach for the hot rolling of round bars from an initial squares cross section of a continuously cast product on a roughing reversible two-high rolling mill of a laboratory semi-continuous rolling mill. In the theoretical part, a research is focused on the characteristics of the continuous casting devices and rolling mills, also on the structure this way made semi-products and the forming influence on the structure and mechanical properties. Further, the practical part is aimed at the description of the laboratory semi-continuous rolling mill, a design an optimal rolling plan, the process of rolling and the microstructure analysis. There is a discussion of the results in the final section, which contains a summary of the obtained values, including the rationale of the changes in the tests in an effort to achieve an optimal approach for the hot rolling.