Induction Heating Copper Wire for Stripping With High Frequency Heating Equipment
Objective To heat pre-tinned copper wires of various diameters to 500 °F (260°C) to melt the tin and to coalesces (fuse) the wires for easier stripping
Material Pre-tinned copper wires 0.01mm in diameter
Temperature 500 °F (260°C)
Frequency 900 MHz
Equipment DW-UHF-4.5KW solid state induction power supply equipped with a remote heat station containing three 100 pF capacitors for a total of 300 pF.
An induction-heating coil designed and developed specifically for this application (see photo).
Process A multi-turn induction heating coil is used for heating the various wire samples. A ceramic tube is placed inside the coil to act as a guide for the wire and to center the wire, preventing
arcing in the coil. Initial tests are performed to ensure that the individual copper strands are heating to the right temperature. It is determined that the strands can be heated to melt and coalesce the
copper in 1-2 seconds at this frequency
Results/Benefits The DW-UHF-4.5KW Induction Heating system heats the various diameter wires to 500 °F at the rate specified. The same system works on a single multi-stranded wire as well as a dual multi-strand wire assembly.Up to 20 kW of power at 400 kHz could not heat the small copper wires.
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