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, fluxย and silver braze shim
Temperature 1400 ยบF (760 ยบC)
Frequency 250 kHz
Equipment โข DW-UHF-20ย kW induction heating system, equipped with aย remote workhead containing two 1.5ฮผF capacitors for aย total of 0.75ฮผF
โข An induction heating coil designed and developedย specifically for this application.
Process A split helical coil is used to heat the carbide & circular steelย cutter evenly for the brazing application. The circular steelย cutter is placed in a vise and the carbide and braze shim areย placed onto the tooth. The assembly is heated for 5 seconds toย braze the carbide to the circular steel cutter. The circular steelย cutter is rotated in the vise & each carbide tip is brazedย separately without effecting the previous braze.
Results/Benefits Induction heating provides:
โข Rapid, localized heat applied only to tip being brazed, willย not effect previous brazes on the assembly
โข Neat and clean joints
โข Produces high quality repeatable parts