Induction Soldering Steel Cover With High Frequency Heating Units
Objective Soldering a nickel plated steel cover onto a nickel plated steelĀ EMI filter housing without damaging the RF circuit
Material 2ā x 2ā (50.8mm) nickel plated steel cover, 2ā x 2ā (50.8mm)Ā nickel plated steel box and lead-free solder and flux
Temperature 573 ĀŗF (300 ĀŗC)
Frequency 229 kHz
Equipment ā¢ DW-UHF-3Ā kW induction heating system, equipped with aĀ remote workhead containing two 1.2Ī¼F capacitors for aĀ total of 2.4Ī¼F
ā¢ An induction heating coil designed and developedĀ specifically for this application.
Process A single turn square helical coil is used to solder the cover toĀ the filter box. Solder flux is applied to the filter box and twoĀ solder turns (preforms) are placed covering the perimeter ofĀ the cover. The assembly is positioned under the coil andĀ power is applied for 7 seconds to solder the seam.
Results/Benefits Induction heating provides:
ā¢ Hands-free heating that involves no operator skill forĀ manufacturing
ā¢ Repeatable, non-contact clean heating
ā¢ Fast precise heating
ā¢ Good solder flow without over heating the box andĀ damaging RF circuits.
ā¢ Even distribution of heating
