A New Method to Strengthen Tungsten Carbide Cutting Tips

As the strengthened tungsten carbide cutting tips shows more stable properties, in order to get a desired performance of tungsten carbide cutting tips and to a extent to expand the tool life, a proper way to strengthen the carbide tips is required.



A most popular new way to strengthen the cutting tips in nowadays comprises steps as follow, firstly, put the carbide cutting tips in the kerosene or alcohol to remove oil, then put it into an open container and sprinkle some urea. And then, heated it to 180℃. After that, urea will melt and flow into the tungsten carbide through the blowhole. Next, keep the status for about 15minutes and then cool the tips to a temperature lower than the melting temperature of urea. At last, suddenly heated the tips to about700℃，the urea would depolymerize, and carbon and nitrogen would come into being. In this way, the hardness and strength of carbide tips will be improved.

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