Note: Heating a catheter tipping die

Objective:

Water-cooled brass mandrel die, nylon LDPE catheter, “K” type thermocouple and temperature controller.

End Product:

Catheter

Equipment:

Ambrell 3kW induction heating system, remote heat station containing one 0.66 μF capacitor. 

Materials:

N/A

Temperature:

400 °F (204°C)

Frequency:

325 kHz

Testing:

A two-turn plate concentrator coil is used to heat the die. To measure the temperature on the ID and establish the time-to-temperature relationship, the thermocouple is inserted inside the brass die. RF power is applied for 3 seconds to heat the die to 400 °F (204 °C). The nylon tube is pushed into the die and formed into a catheter.

Benefits:

  • Increased throughput and reduced cycle time

  • Consistent and repeatable results

  • Clean heating

  • Precise temperature control 

Heating a catheter tipping die

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