| 摘要 |
The present invention relates to a method and a device for manufacturing a tool and a tool, per se. The method and the device make it possible to manufacture a drill (10) having a central portion (12) of relatively tough hard material connected to a peripheral portion (13) of relatively wear resistant hard material. The chip flutes (18) of the tool (10) is made to consist entirely of relatively wear resistant hard material. <IMAGE> |
