Induction Brazing carbide tip
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Objective Braze a carbide tip to a 4140 steel cutting tool
Material Carbide Isograde C2 & C5 tips, 4140 circular steel cutter, flux and silver braze shim
Temperature 1400 ºF (760 ºC)
Frequency 290 kHz
Equipment • Power of 20kW induction heating system, equipped with a remote workhead containing two 1.5μF capacitors for a total of 0.75μF
• An induction heating coil designed and developed specifically for this application.
Process A split helical coil is used to heat the carbide & circular steel cutter evenly for the brazing application. The circular steel cutter is placed in a vise and the carbide and braze shim are placed onto the tooth. The assembly is heated for 5 seconds to braze the carbide to the circular steel cutter. The circular steel cutter is rotated in the vise & each carbide tip is brazed separately without effecting the previous braze.
Results/Benefits Induction heating provides:
• Rapid, localized heat applied only to tip being brazed, will not effect previous brazes on the assembly
• Neat and clean joints
• Produces high quality repeatable parts
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