zhao, qilin xianlei, hu liu, xianghua
Mechanical parameters, time consumption and energy consumption are important considerations in the application of a certain rolling process. This study aims to investigate characteristics of the roll force, roll torque, roll power, rolling time and total work in multi-pass asymmetrical rolling of strip. Mathematic models were built using the slab m...
Esendag, Kaan; Orta, Adil Han; 127548; Kayabasi, Iskender; Ilker, Selim;
© 2019 The Author(s). Reversible cold rolling process is a well-known method of metal forming. Since the process is highly-automated, predicting process parameters is essential to optimize processing time. An iterative algorithm has been developed and integrated into the industrial reversible cold rolling process. Regression and artificial neural n...
Li, Wei-gang Liu, Chao Feng, Ning Chen, Xi Liu, Xiang-hua
Published in
Journal of Iron and Steel Research International
A mathematical model of friction coefficient was proposed for the roll force calculation of hot-rolled strips. The online numerical solving method of the roll force calculation formula based on the proposed friction model was developed and illustrated by the practical calculation case. Then, the friction coefficient during hot strip rolling was est...
Peretyat’ko, V. N. Smetanin, S. V.
Published in
Metallurgist
This article concerns the development of an energy-efficient technology for rolling one of the most complex (from the standpoint of plastic strain) rail profiles – the grooved tramrail. A new technology which makes efficient use of the roll forces in the horizon plane is proposed. This technology makes it possible to obtain a balanced four-roll pas...
Samodurova, M. N. Barkov, L. A. Latfulina, Yu. S.
Published in
Metallurgist
For experimental evaluation of the efficiency of two-, three-, and four-directional rolling, round, square, and triangular bars made of AK6 aluminum alloy were used. It is established that the most efficient process is the four-directional rolling of square bars, which allow obtaining higher reduction without lateral flow of metal and with minimum ...
Lohmar, Johannes Bambach, Markus Hirt, Gerhard Kiefer, Thomas Kotliba, Daniel Jochum, Martin Seuren, Simon
cho, y. s. s., h. Hwang, S
The shape defects such as edge waves and center buckles may be formed in the rolled strip, since rolling can easily produce non-homogenous elongation across the strip width. The main purpose of tension leveling is to cure such defects by eliminating the differences in elongation and thus eliminating the residual stresses. In this paper, a new model...
Hirt, Gerhard Bambach, Markus Seuren, Simon Henke, Thomas Lohmar, Johannes
Kim, YK Moon, CH Hwang, SM
This paper presents a precision online model for the prediction of the roll force and roll power in a round-oval (or oval-round) pass rolling sequence, which is most commonly employed in rod and wire mills. The approach uses the concept of ideal rolling, to reduce the number of the dimensionless parameters with which the model is constructed. The p...
Lee, Y Kim, HJ Hwang, SM
This paper presents a study of the effect of rolling temperature, roll gap (pass height), initial specimen size and steel grades of specimens on the roll force in round-oval-round pass sequence by applying approximate method and verifications through single stand pilot rod rolling tests. The results show that the predicted roll forces are in good a...
