Manufacturing Technology 2019, 19(5):896-902 | DOI: 10.21062/ujep/391.2019/a/1213-2489/MT/19/5/896

Induction Brazing Analysis of EAST Fast Control Coil Conductor

Xianewei Wang1,*, Peng Han2, Qing He1, Xiulian Li1, Huan Jin3, Chengtao Yu1
1 Jiangsu University of Technology, Changzhou 213001, China
2 North Information Control Research Academy Group Co.,Ltd, Nanjing, 211100, China
3 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

To achieve much higher operation parameters of EAST device, some key components are upgraded. Fast control coil as one of the key components is updated by using novel stainless steel mineral insulation conductor and the turns are increased to 4, which means the coil's operation environment becomes more severe and larger loads will be encountered. The coil joint is apt to be destroyed in view of the potential defects during the fabrication. Given the numerous advantages, the induction brazing is being considered for the conductor joint connection. The copper mock up is used to carry out the feasibility analysis. Based on the structural size of copper tube, the brazing parameters are calculated and a 2 turns splitting induction coil is designed. Some influence factors effecting the induction efficiency are analysed. It will provide guidance for choice of power supply and the optimization design of induction coil. In addition, the induction experiment is launched and comprehensive joint performance tests are subsequently performed. The test results indicate the joint overall performance could satisfy the basic engineering design requirement, but also some defects are found and more study should be carried out and to further improve the brazing quality.

Keywords: EAST, Fast Control Coil, Induction brazing, Current frequency, Eddy current
Grants and funding:

National Magnetic Confinement Fusion Science Program of China (Grant No. 2014GB105002).
Natural Science Foundation of China (Grant No. 51605208, 51805230).

Published: October 1, 2019  Show citation

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Wang X, Han P, He Q, Li X, Jin H, Yu C. Induction Brazing Analysis of EAST Fast Control Coil Conductor. Manufacturing Technology. 2019;19(5):896-902. doi: 10.21062/ujep/391.2019/a/1213-2489/MT/19/5/896.
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