离散化变凸度辊形的自适应设计方法  

Adaptive Design Method of Discrete Variable Crown Roll Contour

作　　者：丁国龙[1] 邱兆祥 汤明俊 周向东[2] Ding Guolong;Qiu Zhaoxiang;Tang Mingjun;Zhou Xiangdong(College of Mechanical Engineering,Hubei University of Technology,Wuhan 430068,China;School of Mechanical Science&Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]湖北工业大学机械工程学院,武汉430068 [2]华中科技大学机械科学与工程学院,武汉430074

出　　处：《机械科学与技术》2020年第4期608-614,共7页Mechanical Science and Technology for Aerospace Engineering

基　　金：湖北省技术创新专项项目(2018AAA020)资助。

摘　　要：变凸度辊形因其优异的凸度控制能力而在板型控制方面应用广泛,但变凸度辊形由于自身的结构特点导致其相对普通辊形而言有着非对称磨损的情况,且大部分的变凸度辊形的设计过程中考虑的主要因素都是辊形的凸度控制能力。针对上述情况,提出了一种离散化变凸度辊形曲线的自适应设计方法,采用遗传算法对辊形数据进行优化。该设计方法以凸度控制能力和轧辊磨损量为辊形评价指标,以该指标建立遗传算法的适应度函数,优化设计辊形曲线。对比CVC(Continuously variable crown)辊形,发现通过遗传算法优化设计后的离散化辊形在保证凸度控制能力的前提下提高了轧辊的抗磨损能力。相较常规设计方法,该设计方法也具有更好的拓展性和灵活度。The variable crown roll contour is widely used in the shape control of strip rolling due to its excellent crown control ability,but the variable crown roll contour has its asymmetrical wear due to its own structural characteristics.And the main factor considered in the design process of the variable crown roll contour is the crown control ability.Aiming at the above situation,an adaptive design method of discrete variable crown roll contour is proposed.The genetic algorithms is used to optimize the roll contour data.The design method uses the crown control ability and the roll wear amount as the roll shape evaluation index,and the fitness function of the genetic algorithm to optimize the design roll curve is established.Comparing the CVC(Continuously Variable Crown)roll contour,it is found that the discrete roll shape optimized by the genetic algorithm improves the wear resistance of the roll under the premise of ensuring the convexity control ability.Comparing with the conventional design method,the design method also has better expandability and flexibility.

关 键 词：辊形 离散化 自适应 非对称磨损 凸度控制 

分 类 号：TG331[金属学及工艺—金属压力加工]