带缺口的焊丝拉拔试验及有限元分析

Drawing experiments and finite element analysis of wires with different grooves

对带缺口的活性无镀铜焊丝的变形趋势进行试验和有限元分析,解决金属在拉拔过程中自接触的算法问题。得出带有纵向U型缺口焊丝添加活性剂的效果最好,纵向V型缺口次之,横向U型缺口添加活性剂的效果最差。并对带缺口的焊丝进行拉拔试验,验证有限元分析的正确性,同时对焊丝截面进行扫描电镜能谱分析,得出闭合后的凹槽内部确实含有拉拔前涂覆的活性剂中的Se元素。

This paper investigated the deformation trend of active wires without copper plating by finite element analysis and drawing experiments. A suitable algorithm was selected and used to simulate the self-contact of wires with grooves during drawing. It was found the best method of adding active fluxes into the wire was to score U Type grooves along the wire. The Se element which belongs to active fluxes was detected in the section of wire with SEM-EDS.