电触头闭合过程中熔焊现象研究  

Research on Electrical Contact Welding in Making Operations

作　　者：朱青成 李震彪[1] 柳子逊 宗天元[1] 魏江[1] 黄靖[1] ZHU Qingcheng LI Zhenbiao LIU Zixun ZONG Tianyuan WEI Jiang HUANG Jing(State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology,Wuhan 430074, Chin)

机构地区：[1]华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室,湖北武汉430074

出　　处：《电器与能效管理技术》2017年第14期9-12,16,共5页Electrical & Energy Management Technology

基　　金：国家自然科学基金资助(51377062)

摘　　要：触头熔焊既可以发生在接通过程,亦可以发生在分断过程。采用触头模拟装置进行触头的电寿命试验,阐明接通过程中的熔焊现象是发生在触头弹跳分离瞬间,还是闭合瞬间,以及闭合弹跳次数及时间对熔焊发生概率的影响。经分析,得出熔焊发生具有随机性。Contact welding can occur in both making and breaking operations. In order to research contact welding phenomena in making operations, electrical endurance experiments were conducted with a simulation test device. Welding phenomena at three different moments were studied to know which moment is the most critical for the welding phenomena： （i） at the first touch of movable and fixed contacts ; （ii） at the contact bounce separation ; and, （iii） when the movable and fixed contacts touch each other after the end of bounce. Influences of the number of bounces as well as bounce duration characteristics on the welding phenomena were also investigated.

关 键 词：触头 熔焊 弹跳 随机性 

分 类 号：TM503[电气工程—电器]