磁弹磨粒形状对磁力钝化的数值仿真影响  

Numerical Simulation of the Influence of Magneto-Elastic Abrasive Particles Shape on Magnetic Passivation

作　　者：杨海 赵雪峰[1] 郑伟[1] 陈曦[1] 刘勇[1] YANG Hai;ZHAO Xuefeng;ZHENG Wei;CHEN Xi;LIU Yong(School of Mechanical Engineering,Guizhou University,Guiyang Guizhou 550025,China)

机构地区：[1]贵州大学机械工程学院,贵州贵阳550025

出　　处：《机床与液压》2025年第7期67-71,共5页Machine Tool & Hydraulics

基　　金：国家自然科学基金项目(52065012);贵州省科技计划项目(黔科合基础-ZK[2022]一般153)。

摘　　要：由于磁弹磨粒形状具有不规则性,为研究双磁盘磁力钝化过程中不同形状的磁弹磨粒对刀具钝化的影响,采用离散单元法(EDEM)模拟磁力钝化过程,预测刀具受到不同形状磨粒冲击后的磨损分布情况,探究磁弹磨粒形状对刀具钝化的影响。结果表明:磁弹磨粒的形状对磨粒的速度没有明显的影响;随着球形度减小,磨粒旋转速度随之减小,同时磨粒对刀具刃口作用力也减小;磁力钝化中,不同形状的磁弹磨粒钝化刀具的最大磨损都发生在刀具刃口上,且磨粒造成的磨损分布大致相同。其中,球形度为0.623的磨粒对刀具的磨损最大,球形度为0.831的磨粒次之,球形磨粒对刀具的磨损最小,磁弹磨粒形状显著影响刀具磨损结果。Due to the irregular shape of magneto-elastic abrasive particles,the discrete element method(EDEM)was used to simulate the magnetic passivation process in dual-disk magnetic passivation,aiming to study the influence of different shapes of magneto-elastic abrasive particles on tool passivation.The wear distribution of tools impacted by abrasive particles of different shapes was predicted,and the influence of particle shape on tool passivation was explored.The results show that the shape of the particles has no significant effect on their velocity.As the sphericity decreases,the rotational velocity of the particles decreases,and the force exerted on the tool edge also decreases.In magnetic passivation,the maximum wear of tools passivated by magneto-elastic abrasive particles of different shapes occurs on the tool edge,and the wear distribution caused by the particles is roughly the same.Among them,the particle with a sphericity of 0.623 causes the greatest wear on the tool,followed by the particle with a sphericity of 0.831,while the spherical particle causes the least wear.The shape of magneto-elastic abrasive particles significantly affects the tool wear results.

关 键 词：磁力钝化 磨粒速度 刃口作用力 刀具磨损 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]