Note: Heat a Fixture for a Wire Heating Application

Objective:

Heat a non-magnetic metal alloy shape-setting fixture for a Nitinol wire heating/shaping application.

End Product:

Nitinol wire

Equipment:

Ambrell EASYHEATTM 6 kW 150-400 kHz induction heating system with a workhead and coil specifically designed for this application

Materials:

Non-magnetic alloy fixture

Temperature:

977 °F (525 °C)

Frequency:

249 kHz

Testing:

THE LAB determined that a specially-designed single position multiple-turn channel coil would be optimal for this application. Temperature indicating paint was applied to the part so it would clearly indicate when the fixture achieved 977 °F (525 °C). It took seven minutes for the EASYHEAT to heat the fixture to temperature. An oven had been heating this fixture to temperature in twelve minutes.

Benefits:

  • Speed: The client had been using an oven, and induction shaved five minutes off of the heating time

  • Footprint: An EASYHEAT and its workhead require a minimal footprint, whereas an oven requires a significant footprint

  • Energy Efficiency: Induction heating is more efficient than an oven; with induction only the fixture is heated

  • Lower Maintenance Costs: Ovens can have significant maintenance costs and downtime with requirements such as relining

Heat a Fixture for a Wire Heating Application

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