Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1987-04-28
1989-08-22
Lechert, Jr., Stephen J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
75240, 51DIG26, 175409, 428564, B22F 300
Patent
active
048595438
ABSTRACT:
An earth working tool, such as a mining and construction cutter bit, has an elongated body, and a working element, such as a hard tip attached on a forward end of the body. The working element or hard tip is fabricated of a composition of essentially tungsten carbide of large grain size. The composition has one of a plurality of different percents, X, by weight of cobalt as a binder and one of a plurality of different Rockwell A scale hardnesses, Y. The cobalt percents X and hardnesses Y are paired in sets and have nominal values which satisfy the relationship:
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Conley Edward V.
Greenfield Mark S.
Kennametal Inc.
Lechert Jr. Stephen J.
Prizzi John J.
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