A Development of an Induction Heating Process for a Jewelry Factory: Experiments and Multiphysics
Abstract
:1. Introduction
2. Theoretical Background
2.1. Principles of Induction Heating
2.1.1. Maxwell’s Equation
2.1.2. Joule’s Heating
2.1.3. Skin Effect
2.1.4. Heat Transfer
2.2. IHP Mechanism
2.3. Multiphysics
3. Methodology
3.1. IHP in a Jewelry Factory
3.1.1. Induction Heating Machine
3.1.2. Essential Parameters
3.2. Experiments
3.2.1. Experiment #1
3.2.2. Experiment #2
3.3. Multiphysics
3.3.1. Models
- Solid Model
- Mesh Model
3.3.2. Boundary Conditions and Material Property Settings
4. Results and Discussion
4.1. Validation
4.2. Experimental Results
4.3. Multiphysics
- Number of Coil Turns (N)
- Position (P)
- Coil Thickness (Th)
4.4. Development of IHP
4.5. Limitations and Future Work
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Nomenclatures
AC | Alternating current |
I2 | Applied current to the coil (A) |
BC | Boundary condition |
Th | Coil thickness (mm) |
h | Convection film coefficient (W/m2-°C) |
DC | Direct current |
J | Electric density (A/m2) |
f | Frequency of the alternating current (Hz) |
IHP | Induction heating process |
N | Number of coil turns |
I1 | Output current generated from the induction heating machine (A) |
P | Position placement of product |
Brange | Range of magnetic flux density on the product surface (T) |
B | Scalar of magnetic flux density (T) |
Bmax | The maximum magnetic flux density generated by the coil (T) |
T | Temperature (°C) |
Tmax | The maximum temperature (°C) |
Tmin | The minimum temperature (°C) |
TR | Transformer turn ratio |
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Material | εr | kr | σ (S/m) | ρ (kg/m3) | Isotropic Thermal Conductivity (W/m °C) | Specific Heat (J/kg °C) |
---|---|---|---|---|---|---|
Jig | 9.8 | 1 | 0 | 3960 | 45 | 880 |
Coil | 1 | 0.99991 | 58 × 106 | 8933 | 400 | 385 |
End capsule | 1 | 0.99998 | 50 × 106 | 10,400 | 385 | 235 |
Solder | 1 | 0.99998 | 48 × 106 | 10,000 | 325 | 235 |
Air | 1.0006 | 1.0000004 | 0 | 1.16 | 0.03 | 1000 |
Material | h (W/m2 °C) |
---|---|
Chain and End cap | 30,000–55,000 |
Solder | 55,000 |
Jig | 350–25,000 |
N | Bmax (T) | Brange (T) |
---|---|---|
2 | 1.782 | 0.139–1.293 |
3 | 2.023 | 0.183–1.707 |
4 | 2.131 | 0.228–1.942 |
5 | 2.165 | 0.204–1.997 |
6 | 2.241 | 0.212–2.096 |
Position | Brange (T) |
---|---|
P1 (original) | 0.183–1.707 (Figure 14b) |
P2 | 0.179–1.603 |
P3 | 0.163–1.467 |
P4 | 0.159–1.450 |
Th | Bmax (T) | Brange (T) |
---|---|---|
Original | 2.023 | 0.183–1.707 |
−40% | 2.147 | 0.184–1.722 |
+40% | 1.920 | 0.148–1.695 |
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Jansaengsuk, T.; Pattanapichai, S.; Thongsri, J. A Development of an Induction Heating Process for a Jewelry Factory: Experiments and Multiphysics. Processes 2023, 11, 858. https://doi.org/10.3390/pr11030858
Jansaengsuk T, Pattanapichai S, Thongsri J. A Development of an Induction Heating Process for a Jewelry Factory: Experiments and Multiphysics. Processes. 2023; 11(3):858. https://doi.org/10.3390/pr11030858
Chicago/Turabian StyleJansaengsuk, Thodsaphon, Sorathorn Pattanapichai, and Jatuporn Thongsri. 2023. "A Development of an Induction Heating Process for a Jewelry Factory: Experiments and Multiphysics" Processes 11, no. 3: 858. https://doi.org/10.3390/pr11030858
APA StyleJansaengsuk, T., Pattanapichai, S., & Thongsri, J. (2023). A Development of an Induction Heating Process for a Jewelry Factory: Experiments and Multiphysics. Processes, 11(3), 858. https://doi.org/10.3390/pr11030858