線材の孔型圧延の温度分布の解析

概要

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A bar is made by hot rolling, so it is important to make the temperature distribution clear for a precise estimation of the material shape and controlling texture. We analyzed the flow of material in bar rolling by the energy method using finite element division. In this paper we deal with the temperature distribution in bar rolling. The temperature distribution near the material-roll contact surface changes sharply. So we propose the following new method for the analysis in the neighboring region of the contact surface. We apply the finite differences method to this region, and the finite element method to the other region. Consequently, the following results are obtained. (i) The temperature at the material-roll contact surface depends highly on the frictional condition and the circumferential velocity of the roll. (ii) The temperature becomes high at the central part of the material near the roll contact surface in square-diamond pass and round-oval pass, whereas in square-oval pass the temperature becomes high at the side part of the material near the roll contact surface.
一般社団法人日本機械学会の論文
1987-10-25