| 摘要 |
PURPOSE:To manufacture economically cutting tool of long service life, by use of cermet as a support for diamond sintered compact etc. for cutting tool, the cermet which is made by uniting (Mo.W)C type carbide crystal contg. principally Mo with iron group metals. CONSTITUTION:As a support of diamond sintered compact or high press. phase type sintered compact for cutting tool is used a cermet made by uniting (Mo.W)C type carbide crystal contg. principally Mo with iron group metal, especially Co, Ni. The attached Figure indicates that the hardness of (Mo.W)C type carbide at ordinary temp. is lower than that of WC type carbide, reversing however at high temp. The (Mo.W)C type carbide is low in manufacturing cost because it is low in material cost compared with the WC system, and temp. and press. conditions of sintering under ultra-high press. are mild. |
