Induction Soldering Fuse Caps With IGBT Induction Heating Units
Objective Soldering three fuse caps simultaneously to reflow lead freeĀ solder and make a joint between the fuse cap and fuse wireĀ guide
Material Plated copper end caps 0.375ā (9.5mm) OD x 0.375ā (9.5mm)Ā height, ceramic fuse tube 1.5ā tall (38.1mm) , lead free solderĀ preforms
Temperature 700 ĀŗF (371 ĀŗC)
Frequency 286 kHz
Equipment ā¢ DW-UHF-20Ā kW induction heating system, equipped with aĀ remote workhead containing two 1.0Ī¼F capacitors for aĀ total of 0.5Ī¼F
ā¢ An induction heating coil designed and developedĀ specifically for this application.
Process A three position two turn helical coil is used to solder threeĀ fuse caps simultaneously. The fuse assemblies are placed inĀ the coil and the heat is applied in three cycles at 3.5 secondsĀ per cycle to reflow the solder. On the production line theĀ bottom caps are soldered first. The fuses are filled with sandĀ and without flipping the assembly the top cap is soldered.
Results/Benefits Induction heating provides:
ā¢ Consistent, repeatable results
ā¢ Precise & accurate heat application
ā¢ Hands-free heating that involves no operator skill forĀ manufacturing
ā¢ Even distribution of heating
