HT-7装置纵场线圈超导线接头的钎焊工艺  

SOLDERING TECHNOLOGY FOR SUPER-CONDUCTIVE JOINT OF LONGITUDINAL FIELD COIL IN HT-7 DEVICE

作　　者：吴杰峰[1] 张勇[1] 姚为民[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥市230031

出　　处：《焊接》2003年第7期29-30,共2页Welding & Joining

摘　　要：纵场铜基NbTi超导母排的钎焊 ,是HT -7装置研制的一项较重要的技术工艺。要求钎焊的接头在 4.2K运行时 ,单个电流接头的接触电阻小于 1× 10 -8Ω。介绍了为达到上述技术要求而在接头结构、钎料配置和施焊工艺过程中所采取的各种措施 ,以及防止NbTi超导线过热的一些有效方法。Soldering of NbTi super-conductive joint is a great technical difficulty in the development of HT-7 device. It is essential that the contact resistance of each soldering joint is less than 1×10 -8 Ω at 4.2 K. In order to fulfill the above-mentioned technical requirement, the joint construct,the disposition of filler metal and several measures during soldering are introduced in this paper. Moreover, some effective methods to prevent NbTi super-conductive wires overheating are also mentioned.

关 键 词：HT-7装置 纵场线圈 超导线接头 钎焊 钎料 过热 

分 类 号：TG454[金属学及工艺—焊接]