Hard alloys for tools in the wood industry

Details Hard alloys for tools in the wood industry Hard alloys for tools in the wood industry

1995-04-28

1999-07-20

Simmons, David A.

Metal treatment

Stock

Age or precipitation hardened or strengthened

148408, 148410, 148425, 148427, 75236, 75240, 75242, C22C 1903

Patent

active

059251972

ABSTRACT:
A sintered hard alloy for tools for cutting wood. The alloy according to the present invention comprises 30-98 volume % hard constituents in a binder phase based on nickel and/or cobalt. The hard constituents comprise oxides, carbides, nitrides and/or borides of Al, Zr, Si and/or Ti, preferably Al.sub.2 O.sub.3, ZrC, ZrO.sub.2, SiC, Si.sub.3 N.sub.4 and/or TiB.sub.2 with a mean grain size <1.5 .mu.m, preferably <1.0 .mu.m. The binder phase comprises in solution, in weight %, Co max 90, Ni max 90, Cr 5-45.

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patent: 4589917 (1986-05-01), Nagato
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patent: 4950328 (1990-08-01), Odani et al.
Patent Abstracts of Japan, vol. 9, No. 293 (C-315), abstract of JP 60-135552.
Patent Abstracts of Japan, vol. 10, No. 161 (C-352), abstract of JP 61-12847.
Patent Abstracts of Japan, vol. 10, No. 245 (C-368), abstract of JP 61-76645.
Patent Abstracts of Japan, vol. 10, No. 245 (C-368), abstract of JP 61-76646.

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