Details
| Translated title of the contribution | Wärmeübergangskoeffizienten von direkt und indirekt gekühlten Bauteilbereichen bei der Luft-Wasser-Spraykühlung |
|---|---|
| Original language | Multiple languages |
| Pages (from-to) | 64-75 |
| Number of pages | 12 |
| Journal | HTM - Journal of Heat Treatment and Materials |
| Volume | 76 |
| Issue number | 1 |
| Publication status | Published - 18 Feb 2020 |
Abstract
For the determination of heat transfer coefficients in air-water spray cooling, two methods are presented that are capable of characterizing multi-nozzle cooling set-ups. The methods are based on the quenching of thin-walled tubes or massive cylinders on which cooling curves are recorded at given positions with thermocouples. The temperature dependent heat transfer coefficients were calculated by an inverse calculation and the measured temperature-time-curves could be reproduced with these data in numerical cooling simulations. Next, the determined heat transfer coefficients were used for the calculation of an air-water-spray quenching process of a forging part with more challenging geometry. The calculated results were compared with thermocouple measurements. Different calculation variants for the heat transfer on component surfaces not directly exposed to the air-water spray are shown and discussed.
ASJC Scopus subject areas
- Engineering(all)
- Industrial and Manufacturing Engineering
- Materials Science(all)
- Metals and Alloys
- Materials Science(all)
- Materials Chemistry
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In: HTM - Journal of Heat Treatment and Materials, Vol. 76, No. 1, 18.02.2020, p. 64-75.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Heat Transfers Coefficients of Directly and Indirectly Cooled Component Areas during Air-Water Spray Cooling
AU - Kahra, C.
AU - Nürnberger, F.
AU - Maier, H. J.
AU - Herbst, S.
N1 - Funding Information: Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project-ID 252662854 – SFB 1153.
PY - 2020/2/18
Y1 - 2020/2/18
N2 - For the determination of heat transfer coefficients in air-water spray cooling, two methods are presented that are capable of characterizing multi-nozzle cooling set-ups. The methods are based on the quenching of thin-walled tubes or massive cylinders on which cooling curves are recorded at given positions with thermocouples. The temperature dependent heat transfer coefficients were calculated by an inverse calculation and the measured temperature-time-curves could be reproduced with these data in numerical cooling simulations. Next, the determined heat transfer coefficients were used for the calculation of an air-water-spray quenching process of a forging part with more challenging geometry. The calculated results were compared with thermocouple measurements. Different calculation variants for the heat transfer on component surfaces not directly exposed to the air-water spray are shown and discussed.
AB - For the determination of heat transfer coefficients in air-water spray cooling, two methods are presented that are capable of characterizing multi-nozzle cooling set-ups. The methods are based on the quenching of thin-walled tubes or massive cylinders on which cooling curves are recorded at given positions with thermocouples. The temperature dependent heat transfer coefficients were calculated by an inverse calculation and the measured temperature-time-curves could be reproduced with these data in numerical cooling simulations. Next, the determined heat transfer coefficients were used for the calculation of an air-water-spray quenching process of a forging part with more challenging geometry. The calculated results were compared with thermocouple measurements. Different calculation variants for the heat transfer on component surfaces not directly exposed to the air-water spray are shown and discussed.
KW - Air-Water Spray Cooling
KW - Hardening
KW - Heat Transfer Coefficient
KW - Heat Treatment
KW - Numerical Simulation
KW - Quenching
UR - http://www.scopus.com/inward/record.url?scp=85101563917&partnerID=8YFLogxK
U2 - 10.1515/htm-2020-0005
DO - 10.1515/htm-2020-0005
M3 - Article
AN - SCOPUS:85101563917
VL - 76
SP - 64
EP - 75
JO - HTM - Journal of Heat Treatment and Materials
JF - HTM - Journal of Heat Treatment and Materials
SN - 1867-2493
IS - 1
ER -