Approaches for increasing the lifetime of single-shot coils

• Stefan Schubotz ^[2] ; Bernard Nacke ^[1]
  1. [1] University of Hannover

     University of Hannover

     Region Hannover, Alemania

     
  2. [2] EFD Induction GmbH, Freiburg, Germany
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 39, Nº 1, 2020, págs. 166-176
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • The purpose of this study is now to optimize the coil in a way that its lifetime is increased. In the industry, induction hardening of rotationally symmetrical workpieces in a single-shot process is a common method. Owing to only partial superimposition of the workpiece areas to be heated by the inductor, high power densities are frequently needed there. These lead to local hot spots, amounting to an intensive material stress in the copper and often result in short lifetime of the inductor.