Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1979-05-07
1981-10-06
Hunt, Brooks H.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
428565, C22C 2900, B22F 706
Patent
active
042936187
ABSTRACT:
The invention relates to a sintered body for use in a cutting tool comprising a cutting edge forming part having particularly high hardness and wear resistance bonded to a supporting member having high plastic deformability, stiffness, transverse rupture strength, thermal conductivity, thermal expansion coefficient, resistance to corrosion, oxidization and the like, and to a method for producing the same. A diamond powder or high pressure form boron nitride powder is placed in contact with preliminarily sintered cermet constituted by carbide crystals chiefly comprising molybdenum in the form of (Mo, W)C bonded by iron group metals, the combined body being sintered at a temperature and pressure under which the diamond powder or high pressure form boron nitride powder is thermodynamically stable so that the sintered body of the diamond or high pressure form boron nitride is bonded to the cermet thereby enabling to obtain a sintered body having the said high properties for use in a cutting tool.
REFERENCES:
patent: 3819814 (1974-06-01), Pope
patent: 3999954 (1976-12-01), Kolaska et al.
patent: 4150195 (1979-04-01), Tobioka et al.
Hara Akio
Yazu Shuji
Hunt Brooks H.
Sumitomo Electric Industries Ltd.
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