Shrink Fittting Part Removal application with Induction Heating
Objective
This is a Shrinkfit Part Removal application. The customer’s current process uses a press to push the inserted part out. However, this requires significant force and time. By applying heat, the housing can expand just enough to allow for the easy removal of the inserted part with minimal force. The customer’s time requirement is to complete the Shrinkfit Part Removal within 7 minutes.
Equipment
DW-HF-15kw induction heating machine
Materials
• Aluminum pump housing Part OD 2.885” (73.279mm), wall 0.021” (.533mm)
Key Parameters
Temperature: Approximately 400°F (204°C)
Power: 4 kW
Time: 100 seconds
Process:
- To complete the Shrinkfit Part Removal, place part into coil, so the top of the housing is as close as possible to the top of the coil.
- Some experimentation was needed to determine the ideal time and power. We found that 100 seconds was ideal for removal of the part, which was significantly lower than the customer’s limit of 7 minutes
- Precise control of the time and temperature
- Power on demand with rapid heat cycles
- Repeatable process, not operator dependent
- Safe heating with no open flames
- Energy efficient heating