Brazing Carbide Tips To Steel With Induction Heater
Objective: Braze a carbide tip to a 4140 steel cutting tool
Material: Carbide Isograde C2 & C5 tips, 4140 circular steel cutter, fluxĀ and silver braze shim
Temperature 1400 ĀŗF (760 ĀŗC)
Frequency 250 kHz
Equipment ā¢ DW-UHF-20Ā kW induction heating system, equipped with aĀ remote workhead containing two 1.5Ī¼F capacitors for aĀ total of 0.75Ī¼F
ā¢ An induction heating coil designed and developedĀ specifically for this application.
Process A split helical coil is used to heat the carbide & circular steelĀ cutter evenly for the brazing application. The circular steelĀ cutter is placed in a vise and the carbide and braze shim areĀ placed onto the tooth. The assembly is heated for 5 seconds toĀ braze the carbide to the circular steel cutter. The circular steelĀ cutter is rotated in the vise & each carbide tip is brazedĀ separately without effecting the previous braze.
Results/Benefits Induction heating provides:
ā¢ Rapid, localized heat applied only to tip being brazed, willĀ not effect previous brazes on the assembly
ā¢ Neat and clean joints
ā¢ Produces high quality repeatable parts