| 摘要 |
<p>The invention relates to a hard metal tool which rotates about its own longitudinal axis, has an l/d ratio of 2 to 200 and is intended for the drilling or milling of materials. The hard metal tool contains a hard material phase and a binder phase, wherein the main binder constituents are iron, nickel and cobalt, the iron content is between 50 and 90% by weight, the nickel content is between 10 and 30% by weight, the cobalt content is at most 30% by weight and the cobalt to nickel Co:Ni ratio is less than or equal to 1, based on % by weight.</p> |
