焊接缺陷对行波管收集极温度分布的影响研究  

Study on the Effect of Welding Defects on Temperature Distribution of TWT Collector

作　　者：许沙[1,2] 宋芳芳[2] 陈可娟[1] 吕东亚[3] 王严梅[3] 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640 [2]工业和信息化部电子第五研究所电子元器件可靠性物理及应用技术重点实验室,广州510610 [3]北京真空电子技术研究所,北京100015

出　　处：《电子器件》2013年第5期604-607,共4页Chinese Journal of Electron Devices

基　　金：电子元器件可靠性物理及其应用技术重点实验室基金项目(9140C03050111DZ15)

摘　　要：行波管收集极焊接缺陷会影响其散热,严重时会导致行波管失效。利用有限元软件模拟计算了不同加载方式对行波管收集极温度分布的影响,研究表明两种加载方式下收集极内部温升差别较大。在静态加载的基础上,研究了焊接面积不足和焊接面积不均两种主要焊接缺陷对收集极温度分布的影响。分析结果表明,在用锡钎焊接收集极与底座时,除了要保证焊接接触区域在50%以上外,还要保证底座凹槽的侧边和底边与收集极都要接触良好。The welding defects of TWT collector have a great effect on its heat dissipation,and some time it can cause TWT invalid. Using finite element software simulates the different loading types to analyse the effect of the loading methods on temperature distribution of TWT collector. The result shows that there is a big difference between the two methods. Under the condition of static loading,the effect of two main wedding defects,as insufficient welding area size and inhomogeneous welding zone position on temperature distribution of TWT collector have been analysed and compared. The welding area size should be more than 50% and the side and bottom edge of the groove of pedestal should has a good contact with TWT collector when welding pedestal and collector with solder.

关 键 词：行波管 收集极 焊接 有限元方法 温度分布 

分 类 号：TN124[电子电信—物理电子学]