, Volume 56, Issue 9–10, pp 672–678 | Cite as

Analysis of technologies used to make hollow ingots and prospects for their improvement

  • V. V. Nazaratin
  • O. A. Kobelev
  • M. V. Efimov
  • A. A. Selyutin
  • P. M. Yavtushenko

The technologies that are used to make hollow ingots are analyzed. Their characteristic features are discussed along with their intrinsic advantages and disadvantages. A new technology that significantly alleviates the formation of defective regions in hollow ingots during their crystallization is proposed.


forging ingot ingot mold hot top design method shrinkage defects axial porosity 


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • V. V. Nazaratin
    • 1
  • O. A. Kobelev
    • 1
  • M. V. Efimov
    • 2
  • A. A. Selyutin
    • 2
  • P. M. Yavtushenko
    • 2
  1. 1.Scientific and Production Association Central Research Institute of Machine Building Technology (NPO TsNIITmash)MoscowRussia
  2. 2.Energomashspetsstal Company (EMSS)KramatorskUkraine

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