基于离散单元法(DEM)研究镀桶截面形状对机械镀过程物料运动的影响  

Influence of Section Shape of Plating Barrel on the Movement of Materials in Mechanical Plating Process Based on DEM

作　　者：郝朝阳 王胜民[1] 赵晓军[1] 高凯 HAO Chaoyang;WANG Shengmin;ZHAO Xiaojun;GAO Kai(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093

出　　处：《中国表面工程》2022年第2期196-204,共9页China Surface Engineering

基　　金：国家自然科学基金资助项目(52161013)。

摘　　要：镀桶的截面形状对机械镀过程的影响受限于机械镀设备等原因,相关研究较少。为研究不同截面形状的镀桶对机械镀过程中桶内物料运动规律的影响,采用离散元模拟软件EDEM建立不同形状(四边形、六边形、八边形、圆形)下镀桶内物料的运动模型,并从碰撞区域、碰撞频率、碰撞接触力和碰撞能量四个方面对桶内物料间的碰撞情况进行研究。结果表明:镀桶的截面形状对机械镀过程中桶内物料的碰撞和运动规律产生很大影响,在相同模拟条件下,八边形镀桶内物料运动的惰性区域最小;通过对不同形状镀桶内物料间碰撞频率、碰撞接触力和碰撞能量的对比分析,八边形镀桶中的物料运动规律最有利于机械镀工艺过程中镀层的形成和增厚,八边形为最优镀桶截面形状。另外,通过计算机数值模拟的方法探讨镀桶截面形状对机械镀过程中物料运动规律的影响规律,为机械镀设备发展和工艺优化提供理论依据。The influence of the cross-sectional shape of the plating barrel on the mechanical plating process is limited by mechanical plating equipment and other reasons, and there are few related studies. In order to study the influence of plating barrels with different cross-sectional shapes on the motion law of materials in the barrel during the mechanical plating process, the discrete element simulation software EDEM is used to establish the materials in the plating barrels under different shapes(quadrilateral, hexagonal,octagonal, and circular). The collision between the materials in the barrel is studied from the four aspects of the collision area, the collision frequency, the collision contact force and the collision energy. The results show that the cross-sectional shape of the plating barrel has a great influence on the collision and motion of the material in the barrel during the mechanical plating process. Under the same simulation conditions, the inert area of the material movement in the octagonal plating barrel is the smallest. Comparative analysis of the collision frequency, collision contact force and collision energy between materials in the plating barrel, the motion law of the material in the octagonal coating barrel is most conducive to the shape and thickness of the coating during the mechanical plating process, and the octagon is the best plating barrel section shape. In addition, the influence of the section shape of the plating barrel on the movement of the material in the process of mechanical plating is discussed through the method of computer numerical simulation, which provides a theoretical basis for the development of mechanical plating equipment and process optimization.

关 键 词：机械镀 离散单元法 镀桶形状 碰撞 波动性 

分 类 号：TG174[金属学及工艺—金属表面处理]