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Enhancing Induction Coil Reliability

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Abstract

In induction hardening, thermal fatigue is one of the main copper failure modes of induction heat treating coils. There have been papers published that describe this failure mode and others that describe some good design practices. The variables previously identified as the sources of thermal fatigue include radiation from the part surface, frequency, current, concentrator losses, water pressure and coil wall thickness. However, there is very little quantitative data on the factors that influence thermal fatigue in induction coils is available in the public domain. By using finite element analysis software this study analyzes the effect of common design variables of inductor cooling, and quantifies the relative importance of these variables. A comprehensive case study for a single shot induction coil with Fluxtrol A concentrator applied is used for the analysis.

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References

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Authors and Affiliations

  1. Fluxtrol Inc., Auburn Hills, MI, USA

    K. Kreter, R. Goldstein, C. Yakey & V. Nemkov

Authors
  1. K. Kreter
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  2. R. Goldstein
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  3. C. Yakey
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  4. V. Nemkov
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Corresponding author

Correspondence to R. Goldstein.

Additional information

This article is an invited paper selected from presentations at the 27th ASM Heat Treating Society Conference, held September 16-18, 2013, in Indianapolis, Ind., and has been expanded from the original presentation.

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Kreter, K., Goldstein, R., Yakey, C. et al. Enhancing Induction Coil Reliability. J. of Materi Eng and Perform 23, 4164–4169 (2014). https://doi.org/10.1007/s11665-014-1249-4

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  • DOI: https://doi.org/10.1007/s11665-014-1249-4

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