Brazed Tungsten Carbide Cutting Frequency Welding Factor

Brazed tungsten carbide cutting tools for its simple and compact structure, good rigidity, greater flexibility in use, adaptability and other characteristics, are used in precision machining, FMS, and other various metal cutting machining. tungsten carbide blade and shank is often used for brazing high frequency induction brazing and soldering flame. Because of the high frequency brazing method which has a heating speed, temperature, concentration, part distortion characteristics such as tungsten carbide welding process, a common method.

Commonly used tungsten carbide inserts tungsten carbide have YT5, YT15, YT30, YG3X, YN, etc. The physical properties of its linear expansion coefficient greater impact on weldability. Coefficient of linear expansion (4.2 ~ 7) × 10- 6 / ℃, tungsten carbide thermal conductivity of 0.08 to 0.21 cal / cm · sec · deg, which are important cause welding stress. tungsten carbide brazing filler metal of choice for HL105 solder. Because HL105 solder has good wetting and high weld strength, while HL105 solder temperature plastic, solder varied shapes, so HL105 (BCu58ZnMn) solder is the best brazed tungsten carbide cutting tools braze welding of materials. Solder before use to wipe with alcohol. tungsten carbide cutting tools at high frequency brazing flux if not fit, easy to form a brittle compound in solder joints junction. Therefore, when the brazing flux to be complex. Chemical composition of the high-frequency flux brazing of tungsten carbide cutting tools used are dehydrated borax (50%), boric acid (35%) and dehydrated potassium fluoride (15%).


 

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