Details
| Original language | English |
|---|---|
| Pages (from-to) | 166-176 |
| Number of pages | 11 |
| Journal | COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 39 (1) |
| Volume | 39 |
| Issue number | 1 |
| Early online date | 31 Jan 2020 |
| Publication status | Published - 11 Mar 2020 |
Abstract
Purpose: 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. Design/methodology/approach: In this elaboration, some numerically analysed approaches are presented that can be used to reduce mechanical stresses in the single-shot inductor and thus increase the service life. Findings: It has been found out that changing the coil profiles has a strong influence on its lifetime. Besides that, the heat transfer coefficient between coil and coolant plays a big role and needs to be considered when the coil is dimensioned. Originality/value: The lifetime of the coil is an important factor and often requested from the customers. Broken coils create a lot of extra costs and can generate downtime. Therefore, many customers that are struggling with thermal fatigue are interested in approaches that prolong the coil lifetime.
Keywords
- Design optimization methodology, Finite element method, Induction heating
ASJC Scopus subject areas
- Computer Science(all)
- Computer Science Applications
- Computer Science(all)
- Computational Theory and Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
- Mathematics(all)
- Applied Mathematics
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In: COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 39 (1), Vol. 39, No. 1, 11.03.2020, p. 166-176.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Approaches for increasing the lifetime of single-shot coils
AU - Schubotz, S.
AU - Nacke, Bernard
PY - 2020/3/11
Y1 - 2020/3/11
N2 - Purpose: 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. Design/methodology/approach: In this elaboration, some numerically analysed approaches are presented that can be used to reduce mechanical stresses in the single-shot inductor and thus increase the service life. Findings: It has been found out that changing the coil profiles has a strong influence on its lifetime. Besides that, the heat transfer coefficient between coil and coolant plays a big role and needs to be considered when the coil is dimensioned. Originality/value: The lifetime of the coil is an important factor and often requested from the customers. Broken coils create a lot of extra costs and can generate downtime. Therefore, many customers that are struggling with thermal fatigue are interested in approaches that prolong the coil lifetime.
AB - Purpose: 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. Design/methodology/approach: In this elaboration, some numerically analysed approaches are presented that can be used to reduce mechanical stresses in the single-shot inductor and thus increase the service life. Findings: It has been found out that changing the coil profiles has a strong influence on its lifetime. Besides that, the heat transfer coefficient between coil and coolant plays a big role and needs to be considered when the coil is dimensioned. Originality/value: The lifetime of the coil is an important factor and often requested from the customers. Broken coils create a lot of extra costs and can generate downtime. Therefore, many customers that are struggling with thermal fatigue are interested in approaches that prolong the coil lifetime.
KW - Design optimization methodology
KW - Finite element method
KW - Induction heating
UR - http://www.scopus.com/inward/record.url?scp=85078984508&partnerID=8YFLogxK
U2 - 10.1108/compel-06-2019-0228
DO - 10.1108/compel-06-2019-0228
M3 - Article
VL - 39
SP - 166
EP - 176
JO - COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 39 (1)
JF - COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 39 (1)
IS - 1
ER -