强激光与粒子束2011，Vol.23Issue(10)：2598-2602,5.DOI:10.3788/HPLPB20112310.2598
基于激光焊接的网络滤波器无铅化封装
Lead-free packaging of network filter based on direct laser welding
摘要
Abstract
Direct laser welding was used to study the lead-free packaging of network filter through three different methods. The methods for direct laser welding of enameled copper wire with a diameter of 0. 10 mm in network filter are obtained without removing the insulating paint of enameled wire. The results show that, as the laser irradiates the enameled wire of network filter, the insulating paint is wiped off;the copper core, which has a high melting temperature and good fluidity, is melted; the liquid copper whose temperature is higher than the melting temperature of aluminum flows down and coats the aluminum pin; the aluminum pin, which has many disadvantages such as poor fluidity, difficult to weld, easy oxidization, is coated by liquid copper and melts partly; mutual solution and diffusion take place between the liquid copper just flowing down and the aluminum just melting; the weld joint is formed after the liquid metal cools and solidifies. This method without removing the insulating paint of enameled wire simplifies the welding process greatly and meets the lead-free requirement. It can improve the reliability of laser welding to some extent and is convenient for automation with the help of auxiliary circuit.关键词
激光技术/无铅化激光焊接/网络滤波器/极细铜芯漆包线/去除绝缘漆Key words
laser technique/ lead-free laser welding/ network filter/ fine enameled copper wire/ insulating paint removal分类
矿业与冶金引用本文复制引用
师文庆,黄延禄,王文华,熊正烨..基于激光焊接的网络滤波器无铅化封装[J].强激光与粒子束,2011,23(10):2598-2602,5.基金项目
国家自然科学基金项目(51075157) （51075157）
