金属丝熔断特性的研究  

On Property of Fusing of Metal Wire

作　　者：王明灼[1] 王永华[1] 周玉刚[1] 

机构地区：[1]四川理工学院物理系,四川自贡643000

出　　处：《四川理工学院学报（自然科学版）》2008年第5期12-15,共4页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

摘　　要：文章对铜丝通电熔化熔断进行了理论上的一些研究。当熔断时间较短时,可忽略热辐射影响,得到熔断电流的平方与熔断时间的倒数成线性关系。其截矩的平方根是该长度截面铜丝的安全工作的界限。自行设计了一种测定金属丝熔断特性的实验,实验结果与理论结论非常吻合。The thesis makes some theoretical research on fusing of opper wire. When the fusing time is less, the influence of heat and thermal radiation can be neglected. Under the condition, linear relation takes shape between the square of fusing electric current and reciprocal of fusing time. The square root of its cut distance is its length, which is the limitation of safe operation of section of copper wire. The experiment used to determine the property of fusing of metal wire is designed. Its result tallies with theoretical conclusion.

关 键 词：熔断 热力学系统 绝热过程 数字存贮 测量 

分 类 号：O435[机械工程—光学工程]