Note: Plastic Lawn Chairs
Objective:
To heat internally threaded steel inserts to a temperature above 6500 F for insertion into plastic lawn chair assemblies. Currently, the insertion is done with a type of locktite in approximately three to five seconds.
End Product:
Lawn chair
Equipment:
Ambrell 1 kW system including one remote heat station containing one 0.66 µF capacitor, a 4-20 mA input fast ramp simulator, and a two-over-two double-wound helical coil.
Materials:
Steel Inserts (internally machine threaded)
PET Plastic
Temperature:
> 650 °F
Frequency:
297 kHz
Testing:
650 °F was reached with a heating cycle of 2.5 seconds with the use of a 4-20 mA input simulating a fast ramp circuit. Quality insertion was achieved through the use of a two-over-two double-wound four-turn helical coil. Heating cycle times are reduced
Benefits:
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