Hard facing for milled tooth rock bits

Details Hard facing for milled tooth rock bits Hard facing for milled tooth rock bits

1989-03-27

1990-07-31

Clingman, A. Lionel

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

175374, 175410, B24D 302

Patent

active

049447742

ABSTRACT:
A hard facing for teeth on a milled tooth rock bit comprises at least 65% by weight of a mixture of tungsten carbide particles and a balance of steel bonding the carbide particles together and to the cutter cone of the rock bit. The tungsten carbide particle mixture comprises from 35% to 80%, and preferably from 65% to 80%, by weight 20 to 30 mesh cemented tungsten carbide, and from 20% to 65%, and preferably from 20% to 35% by weight 40 to 80 mesh single crystal monotungsten carbide.

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