A good carbide tip might hold an edge ten to twenty times longer than a tool steel tip.You can sharpen them using the same techniques you would use with tool steel, but because they are so hard, you use a different abrasive.
Carbide tips are small pieces that are brazed onto the body of a tool. They are stronger and can resist more heat than other materials.
Carbide tips can retain their cutting-edge hardness at high machining temperatures.
Carbide tips can improve surface finish and hold size longer for better quality. It can also run at higher speeds than HSS tools, about 6 to 8 times faster. Howeveronce carbide becomes dull, it can be very difficult to sharpen. Carbide tools are recommended for cutting hard or abrasive materials. They can retain their hardness at temperatures up to approximately 1700°.