Fixed cutter bit and blade for a fixed cutter bit and methods for making the same
AssigneeKennametal Inc.
InventorsShivanand I. Majagi, Jonathan W. Bitler
Life of this patent
Estimating the term…
Abstract
A blade, which is useful on a tool that impinges earth strata, that has a blade body with a leading surface. The blade body has a first portion defining at least a part of the leading surface and a second portion. The first portion is made of a first material composition and the second portion is made of a second material composition.
Claims21
A blade for use on a tool that impinges earth strata, the blade comprising:
- a blade body having a leading surface;
- the blade body having a first portion defining at least a part of the leading surface, and the blade body further having a second portion;
- and
- the first portion comprising a first material composition and the second portion comprising a second material composition.
A blade for use on a fixed cutter bit, said blade comprising a blade body having a leading portion, optionally a mediate portion and a trailing portion, the leading portion containing at least one groove for receiving a cutter element, the leading portion being made from a leading portion material, the mediate portion being made from a mediate portion material, and the trailing portion being made from a trailing portion material.
A fixed cutter bit having a bit body that present a shoulder, and a blade projecting from the shoulder, the blade comprising:
- a blade body having a leading surface, the blade body having a first portion defining at least a part of the leading surface, and the blade body further having a second portion, and the first portion comprising a first material composition and the second portion comprising a second material composition;
- the first material composition material being selected from the group consisting of cemented carbide and steel and a hard composite comprising a plurality of hard constituents and matrix powder of hard particles and an infiltrant alloy bonded together to form the hard composite;
- and
- the second material composition material being selected from the group consisting of cemented carbide and steel and a hard composite comprising a plurality of hard constituents and matrix powder of hard particles and an infiltrant alloy bonded together to form the hard composite.
A fixed cutter bit for impinging earth strata, the bit comprising:
- a bit body having a first portion of a first hardness and a plurality of blades projecting from the bit body wherein each one of the blades comprises a blade body and at least one cutter element carried by the blade body, and each one of the blade bodies having a portion of a second hardness greater than the first hardness.
Dependencies are inferred from the claim text.