Induction Brazing Steel Parts to Tungsten Carbide Plate

Objective Induction Brazing of Steel Parts to a Tungsten Carbide Plate Equipment DW-UHF-6KW-III handheld induction brazing machine

Test 1 Materials • Steel rod: 19.05 mm (0.75″) OD, 82.55 mm (3.25″) Length • Tungsten Carbide Plate: 38.1 mm (1.5″) OD, 10.16 mm (0.4″) Thickness • Alloy: 19.05 mm (0.75″) Brazing discs Power: 4.0 kW Temperature: Approximately 760° C (1400° F) Time: 40 sec

Test 2 Materials • Steel rod: 12.7 mm (0.50″) OD, 76.2 mm (3″) Length • Tungsten Carbide Plate: 19.05 mm (0.75″) OD, 6.35 mm (0.25″) Thickness • Alloy: 12.7 mm (0.50″) Brazing discs Power: 2.36 kW Temperature: Approximately 760° C (1400° F) Time: 23 sec

Test 3 Materials • Steel rod: 12.7 mm (0.50″) OD, 76.2 mm (3″) Length • Tungsten Carbide Plate: 1″ OD, 1.39mm (0.055″) Thickness • Alloy: 12.7 mm (0.50″) Brazing discs Power: 2.36 kW Temperature: Approximately 760° C (1400° F) Time: 20-25 sec (Pulsing on/off)

Test 4 Materials • Steel rod: 6.35 mm (0.25″) OD, 76.2 mm (3″) Length • Tungsten Carbide Plate: 21.08mm (0.83″) OD, 1.65mm (0.065″) thicknes • Alloy: 6.35 mm (0.25″) Brazing discs Power: 1.96 kW Temperature: Approximately 760° C (1400° F) Time: 20 sec (Pulsing on/off)

Results and Conclusions: Brazing of different steel parts to carbide disks is possible with one induction coil. Power was regulated by turning the heat on and off using a foot switch to prevent overheating of the carbide parts.

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