Original scientific paper

Research on temperature field and microstructure distribution of cross wedge rolling based on square billet

Q. J. Lian ; Ningbo University, School of Mechanical Engineering and Mechanics, Ningbo, China
X. D. Shu ; Ningbo University, School of Mechanical Engineering and Mechanics, Ningbo, China
T. Z. Chen ; Ningbo University, School of Mechanical Engineering and Mechanics, Ningbo, China

Abstract

With the deepening and popularization of the cross wedge rolling process, the requirements for the cross wedge rolling blanks have become wider and wider. Relying only on the traditional round blanks will restrict the promotion of the cross wedge rolling process to a certain extent. The emergence of the square billet is a breakthrough in the selection of raw materials, but related research is relatively scarce. Therefore, this paper conducts a finite element simulation for the rolling process of the square billet. Four characteristic points are taken on the longitudinal section of the billet to track the temperature change. Research on the law of field changes. At the same time, the change of the grain size and dynamic recrystallization percentage of the rolled piece during the rolling process is studied. Simulation and experiment are combined to obtain the change rule of the average grain size of the characteristic points of the longitudinal section of the billet with time.

Keywords

alloy steel; square billet; cross wedge rolling; finite element model; temperature field; average grain size

Hrčak ID:

262411

URI

https://hrcak.srce.hr/262411

Publication date:

3.1.2022.

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