Influence on quenchant performance during induction hardening
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00541_2010_04_02
The cooling performance and heat transfer coefficients of polymers, used for induction hardening in showers, have been evaluated with regard to quench flow, temperature and concentration. Even apparently small deviations in cooling performance have a significant influence on residual stress state, even after tempering. The study was complemented with a benchmark study. In several cases used quenchants were found to deviate from fresh, newly blended, polymer quenchants. Even though the concentration seamed to be correct, according to Brix refractometer index, significant deviations in the quenching performance could be observed when analysing the cooling curves.
| Authors | Eva Troell/Hans Kristoffersen, Magnus Lövgren |
|---|---|
| Publishing Date | 1 Apr 2010 |
| Format | |
| Zeitschrift | heat processing - Issue 04 2010 |
| Publisher | Vulkan-Verlag GmbH |
| Language | English |
| Pages | 6 |
| Title | Influence on quenchant performance during induction hardening |
| Description | The cooling performance and heat transfer coefficients of polymers, used for induction hardening in showers, have been evaluated with regard to quench flow, temperature and concentration. Even apparently small deviations in cooling performance have a significant influence on residual stress state, even after tempering. The study was complemented with a benchmark study. In several cases used quenchants were found to deviate from fresh, newly blended, polymer quenchants. Even though the concentration seamed to be correct, according to Brix refractometer index, significant deviations in the quenching performance could be observed when analysing the cooling curves. |
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