Increasing Roll Life for Steel Rolling Processes

本提案旨在研究热钢冷却系统 以提高轧钢生产率为目标的米尔斯轧机 通过延长轧辊寿命和减少冷却液消耗来提高生产效率。 该研究包括一个实验部分，以获得可靠的 传热系数值和模拟部分 加热，冷却和机械响应的辊在 轧制工艺 已经开发了一种仪表化装置， 类似于米尔斯中使用的冷却系统， 用于精确测量的传热特性， 各种辊式冷却设计。 这个实验确定的热量 传递系数数据将被用于输入到 本研究的数值模拟部分。 拟定研究 将提供对轧辊冷却影响的基本了解 辊的热响应和机械响应， 寻求减少轧辊磨损或剥落的替代冷却设计 由热疲劳应力引起。 研究结果可用于 制定冷却设计指南，以延长轧辊寿命， 减少冷却剂消耗。 这项研究的结果可能会提高生产力， 轧钢工艺，并应有助于基本的 关于基本传热机制的信息。 研究者 有资格成功地完成这项工作， 在这一研究领域。

This proposal is to study the cooling systems used in hot steel mills with the goal of improving productivity of the steel rolling process by increasing roll life and by reducing coolant consumption. The research consists of an experimental portion to obtain reliable heat transfer coefficient values and a modeling portion to simulate the heating, cooling and mechanical response of rolls during the rolling process. An instrumented apparatus has been developed which resembles the cooling systems used in steel mills and will be employed to accurately measure the heat transfer characteristics of various roll-cooling designs. This experimentally determined heat transfer coefficient data will be utilized for input to the numerical simulation portion of this research. The proposed study will provide a basic understanding of the influence of roll cooling on the resulting thermal and mechanical responses of the rolls and seek alternative cooling designs which reduce roll wear or spalling caused by the thermal fatigue stress. The results could be used to develop cooling design guidelines to increase roll life and to reduce coolant consumption. Results of this research could lead to improved productivity in steel rolling processes and should contribute fundamental information on the basic heat transfer mechanisms. The investigator is well qualified to perform this work successfully, having worked extensively in this research area.