An in-line model for predicting front end bending in hot plate rolling and its experimental verification

作者：Byon Sang M; Lee Youngseog^*

来源：Proceedings of the Institution of Mechanical Engineers - Part B: Journal of Engineering Manufacture , 2013, 227(8): 1111-1120.

DOI：10.1177/0954405413485366

• Front end bending
• asymmetric rolling
• in-line model
• pilot hot plate rolling test

In this article, we present an in-line model that can be used for predicting the front end bending of a material frequently produced by hot plate rolling under asymmetric rolling conditions. The in-line model was formulated by examining the relationship between asymmetric rolling conditions and front end bending slope and by expressing front end bending slope as a function of asymmetric rolling conditions as well as roll-bite profiles (shape factor and reduction ratio). We also performed a pilot hot plate rolling test to verify the usefulness of the proposed in-line model. Before the rolling test began, a board-shaped specimen that had been heated in a reheating furnace at 1100 degrees C was half submerged, horizontally, in a bathtub filled with cold water to derive temperature variation of the specimen along the specimen%26apos;s thickness direction, which is one of the asymmetric rolling conditions that produce front end bending. Results show that front end bending slopes formulated as a double-linear function of asymmetric rolling conditions as well as roll-bite profiles (i.e. shape factor and reduction ratio) were successful. The proposed in-line model computed immediately the amount of front end bending whenever the roll-bite profiles and asymmetric rolling conditions changed during rolling. The results predicted by the in-line model were within 6.5%-10.3% of the front end bending slopes measured from the pilot hot plate rolling test.

• 出版日期2013-8