Induction Brazing carbide tool

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Objective Braze carbide rotary file assemblies with uniform concentricity in an aerospace application
Material • Carbide blank
• High speed steel shank
• Temperature indicating paint
• Braze shim and black flux
Temperature 1400°F (760°C)
Frequency 252 kHz
Equipment Power of 6KW induction heating system, equipped with a remote heat station containing two 0.33 μF capacitors (total 0.66 μF)
An induction heating coil designed and developed specifically for this application.
Process A multi-turn helical coil is used. The part is heated to determine the time required to reach the desired temperature and required heat pattern. It takes approximately 30 – 45 seconds to reach 1400°F (760°C) depending on the various part sizes.
Flux is applied to the entire part. A braze shim is sandwiched between the steel shank and carbide. Induction heating power is applied until the braze flows. With proper fixturing, concentricity of the part can be achieved.
Results/Benefits • Repeatable, consistent precise heat.

brazing-carbide-file
brazing-carbide-file

PDF: Induction Brazing carbide tool

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