Brazing Carbide Tips To Steel With Induction

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, flux and silver braze shim
Temperature 1400 ºF (760 ºC)
Frequency 250 kHz
Equipment • DW-UHF-20 kW 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

Brazing Carbide Tool Tips With Induction

Brazing Carbide Tool Tips With Induction 

Objective: Attaching carbide cutters to a steel meat cutter impeller

Material carbide blocks; steel shank fitting

Temperature 1400 °F (760 °C)

Frequency 300 kHz

Equipment DW-UHF-30KW induction heating systems including: Induction heating coil Workhead: two-cap 1.0μF (Total 0.5 μF) Process The entire part is placed in a five-turn helical coil, the power is applied until the part is heated to the required temperature and a uniform heat pattern is achieved. The coil allows for easy fixturing and uniformity of heating between the carbide and the steel shank for a premium braze joint.


Precision: Due to the size of the induction coil, the process allows for precise placement of the carbides on the steel shanks

Economy: Power is consumed only during the heat cycle

Repeatability: joint quality is maintained in this repeatable process