| 摘要 |
The invention relates to a hard metal comprising several hard material phases and a binder phase, a cutting element made of such a hard metal, and a crankshaft miller encompassing such a cutting element. In order to reduce the formation of undesired comb-type fractures in cutting plates, a hard metal is used for producing said cutting plates, more than 70 percent by weight of said hard metal being composed a hard material phase made of tungsten carbide having a mean grain size of less than 1.5?m while the hard metal contains at least 2.5 percent by weight of another hard material phase made of a tantalum carbide or a tantalum niobium carbide, a titanium carbide fraction amounting to less than 5.0 percent by weight. |
