Note: Heating Catheter Tipping Die
Objective:
To heat an aluminum catheter tipping die to above 285 °F within 2 to 5 seconds for the forming of catheter material. Presently, heating is performed in 15 seconds with older induction equipment. The customer would like to use solid state induction equipment to reduce the heating times and develop a more efficient process.
End Product:
Catheter
Equipment:
Ambrell 1 kW system including a remote heat station containing one capacitor totaling 1.2 µF
Materials:
Aluminum catheter tipping die measuring 3/8" OD and 2" long with a nonmagnetic sleeve over the heat zone. The catheter material was described as being similar to polyurethane plastic. Also, a 0.035" diameter steel wire was inserted into the catheter tube to prevent collapsing
Temperature:
500 ºF
Frequency:
287 kHz
Testing:
The system was determined to most efficiently produce a heating time of 3.3 seconds to reach 500 °F and form the catheter achieved through the use of a two-over-two-turn helical coil A quality catheter was formed by pressing 1/2" of the polyurethane tube into the mold while retaining shape through the use of a 0.035" wire to
prevent collapsing of the tube.
Benefits:
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