| 摘要 |
PROBLEM TO BE SOLVED: To solve problems for example, hard metal used for conventional forging tool, cutting tool and mine tool must improve its impact compression intensity. ! SOLUTION: The WC-Co hard metal is configured so that Co is substituted to Ni in a range that γ→ε' modification is not damaged (0.1 at% or more and 5 at% or less), and Cr is added to a coupling phase by 4 mass% or more and 8.8 mass% or less, and WC average particle degree is 1.0 or more and less than 5.0 μm. ! COPYRIGHT: (C)2015,JPO&INPIT |
