Wear resistant tool
OwnerDavid R. Hall, Ron Crockett +3inventors
InventorsDavid R. Hall, Ron Crockett, Jeff Jepson, Joe Fox, Michael Barnhill
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Abstract
In one aspect of the invention, a wear-resistant tool is disclosed which may comprise first and second cemented metal carbide segments chemically bonded together at an interface. The first segment may comprise a first coefficient of thermal expansion (CTE) at least at its interfacial surface and the second segment may comprise a second CTE at least at its interfacial surface less than the CTE of the first segment. The first segment may further comprise a cross-sectional thickness substantially equal to or greater than a cross-sectional thickness of the second segment at the interface.
Claims15
A wear-resistant tool, comprising:
- first and second cemented metal carbide segments being brazed together at a planar interface;
- the first segment being bonded to a diamond material opposite the planar interface and the second segment being bonded opposite the planar interface to a steel base segment with a shank;
- the first segment comprising a first coefficient of thermal expansion at the planar interface and the second segment comprising a second coefficient of thermal expansion at the planar interface less than the coefficient of thermal expansion of the first segment;
- and
- the first segment further comprising a cross-sectional thickness at the interface greater than a cross-sectional thickness of the second segment at the planar interface such that an overhanged is formed between the carbide segments.
Dependencies are inferred from the claim text.