Laber K.B., Sawicki S.Z., Dyja H.S., Kawałek A.M. Physical modelling of 30MnB4 steel rod production during torsion and compression testing: comparative analysis

Abstract

Physical modelling finds a successful application in materials science and metal forming for both basic research, which looks at the rheological properties of materials, and for applied research which is aimed at introducing laboratory test results into the industrial environment. An accurate knowledge of the characteristics of the metals and alloys being examined is an integral part of the development of new technologies. New mathematical models offer a considerable increase in the accuracy of mathematical modeling of the processes under analysis.

There has recently been an intense enhancement of laboratory facilities which now allow researchers to simulate real-life production processes with a high degree of accuracy. The most popular devices designed for physical modelling include the GLEEBLE system simulating metallurgical processes, and torsion plastometers. These devices enable research to be conducted in a wide range of strain parameters. Depending on the process analyzed, it is possible to conduct research applying different strain patterns – compression, tension, torsion, torsion with tension or torsion with compression.

Upon physical modelling, a metallographic analysis and mechanical properties testing are carried out for the deformed material. This creates a basis which makes it possible to optimize the technology currently used and develop new manufacturing processes.

This paper analyzes the results of the physical modelling of a rolling process of low carbon round steel bars used for cold upsetting of 30MnB4 steel. The study was conducted based on the process parameters of one of the continuous bar rolling mills. Physical modeling was done with the help of the STD 812 torsion plastometer and the GLEEBLE 3800 simulator.

Upon physical modelling, a metallographic analysis and mechanical properties testing were carried out for the test material. Studies were done to identify the effect of the early stage processes on the properties of the finished product.

Keywords

Low carbon steel, physical modelling, torsion test, compression test, metallographic test, mechanical properties.

Laber Konrad Błażej – Ph.D. (Eng.), Assistant Professor, Czestochowa University of Technology, Czestochowa, Poland. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Sawicki Sylwester Zdzisław – Ph.D. (Eng.), Assistant Professor, Czestochowa University of Technology, Czestochowa, Poland. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Dyja Henryk – D.Sc. (Eng.), M.Sc., Full Professor, Czestochowa University of Technology, Czestochowa, Poland. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Kawałek Anna Małgorzata – D.Sc. (Eng.), M.Sc., Associate Professor, Czestochowa University of Technology, Czestochowa, Poland. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

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