【作者】 吴长春； 张杰； 汪磊川； 贾生晖； 郝建伟； 胡典章；

【Author】 Wu Changchun Zhang Jie Wang Leichuan Jia ShenghuiHao Jianwei Hu Dianzhang(School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083; Wuhan Iron & Steel (Group) Co. , Wuhan 430083)

【机构】 北京科技大学机械工程学院； 武汉钢铁(集团)公司；

【摘要】 本文针对板带轧机工作辊表面电火花毛化过程中轧辊表面凹坑形状、温度场等问题进行了研究。采用高斯热流密度分布的热源,建立了单个脉冲放电通道的热传导模型,并运用积分变换法和有限差分数值方法进行求解。讨论了轧辊表面在不同峰值电流下放电区域中心位置的瞬态温度变化,以及峰值电流和脉冲宽度与熔化凹坑形状的关系。更多还原

【Abstract】 The process of electric discharge texturing on work roll surface is theoretically studied. A thermal conduction model of single channel spark per pulse is presented, where heat source is Gaussian distributed heat flux. The model is solved combining the methods of integral transform and finite difference. The transient temperature change on roll surface under the condition of different peak current is discussed. The relationship between crater shape and peak current, pulse duration is put forward.更多还原