Tool for Machining Workpieces

A tool for processing workpieces, the tool comprising:

• a clamping part comprised of a tough material containing a first tungsten carbide;
• a working part comprised of a wear-resistant material containing a second tungsten carbide;
• a transition region connecting the clamping part and the working part;
• wherein the first tungsten carbide of the tough material has a grain size in the range between approximately 0.8 μm to approximately 1.3 μm;
• wherein the second tungsten carbide of the wear-resistant material has a grain size that is in the range between approximately 0.2 μm to approximately 0.5 μm;
• wherein in the transition region between the working part and the clamping part a proportion of the second tungsten carbide decreases to 0 in a direction toward the clamping part and a proportion of the first tungsten carbide decreases to 0 in a direction toward the working part;
• and
• wherein a mixing ratio of the first tungsten carbide and the second tungsten carbide in the transition region changes approximately steadily.