| 摘要 |
PROBLEM TO BE SOLVED: To provide a cemented carbide die having a very hard cavity composed of cemented carbide, which cavity has the wear resistance higher than that of heat treated steel materials, and can be manufactured without relying upon a specialty factory, and further to provide its manufacturing method, in view of that the die having the inside surface of its cavity reinforced with cemented carbide has a long life as is well known, but easily causes cracks, and requires a high manufacturing cost, and has not been employed in practical use. SOLUTION: The cemented carbide die is constituted such that a large number of cemented carbide tips formed to be fine are press fitted into the inside surface of a container having a cylindrical shape formed by polygonal axial holes. COPYRIGHT: (C)2007,JPO&INPIT |
