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Chin. Phys. B, 2017, Vol. 26(6): 060201    DOI: 10.1088/1674-1056/26/6/060201
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Consecutive induction melting of nickel-based superalloy in electrode induction gas atomization

Shan Feng(峰山), Min Xia(夏敏), Chang-Chun Ge(葛昌纯)
School of Materials Science and Engineering, University of Science and Technology Beijing(USTB), Beijing 100083, China
Abstract  

The crucible-free electrode induction melting gas atomization (EIGA) technology is an advanced technology for preparing ultra-clean nickel-based superalloy powders. One of the key issues for fabricating powders with high quality and yield is the consecutive induction melting of a superalloy electrode. The coupling of a superalloy electrode and coil, frequency, output power, and heat conduction are investigated to improve the controllable electrode induction melting process. Numerical simulation results show that when the coil frequency is 400 kHz, the output power is 100 kW, superalloy liquid flow with a diameter of about 5 mm is not consecutive. When the coil frequency is reduced to 40 kHz, the output power is 120 kW, superalloy liquid flow is consecutive, and its diameter is about 7 mm.

Keywords:  electrode induction gas atomization      coil frequency      output power      thermal conduction     
Received:  03 January 2017      Editor Suggest Published:  05 June 2017
PACS:  02.60.Cb (Numerical simulation; solution of equations)  
  41.20.Gz (Magnetostatics; magnetic shielding, magnetic induction, boundary-value problems)  
  61.66.Dk (Alloys )  
  81.20.Ev (Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)  
Corresponding Authors:  Min Xia, Chang-Chun Ge     E-mail:  xmdsg@ustb.edu.cn;ccge@mater.ustb.edu.cn

Cite this article: 

Shan Feng, Min Xia, Chang-Chun Ge Consecutive induction melting of nickel-based superalloy in electrode induction gas atomization 2017 Chin. Phys. B 26 060201

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