轧辊热凸度及其控制——板形技术讲座之四

• 作 者: 王国栋
• 出 处: 鞍钢技术
• 发表日期: 1982年08期
• 关键词: 轧辊 凸度 板形 摩擦热 工艺因素 辊缝 工艺条件 液压弯辊 工作辊 冷连轧机

轧制中金属的变形热和金属与轧辊之间的摩擦热传入轧辊,形成了热凸度。热凸度随工艺因素的变化而变化,因而引起承载辊缝发生变化,最终引起板形变化。轧制过程中热凸度既是一个扰动量,又可作为控制量,准确地确定一定工艺条件下轧辊的热凸度,并对其进行控制,是板形技术的一个重要方面。本文将着重介绍热凸度及其控制。

The heat of deformation of the metal during rolling and the frictional heat between the metal and the roll are introduced into the roll to form a thermal crown. Thermal convexity changes with the process factors, resulting in changes in the load-bearing roller seam, and ultimately lead to plate-shaped changes. Thermal crown in the rolling process is not only a disturbance, but also as a control volume, accurately determine the thermal crown under a certain process conditions, and to control it, is an important aspect of the plate shape technology. This article will highlight the thermal crown and its control.