초록 ▼

A rigid composite structure includes a tubular body made from a metallic material and having a first bore formed therein along a longitudinal axis, and one or more segments formed from a super hard material disposed within the first bore. Each segment has a hole formed in the center thereof, and the

A rigid composite structure includes a tubular body made from a metallic material and having a first bore formed therein along a longitudinal axis, and one or more segments formed from a super hard material disposed within the first bore. Each segment has a hole formed in the center thereof, and the segments may be positioned end-to-end and adjacent to one another to align the center holes about the longitudinal axis and form a second bore. The segments can be held under compression within the first bore of the tubular body. The segments may be made of super hard materials such as natural diamond, synthetic diamond, polycrystalline diamond, single crystalline 10 diamond, cubic boron nitrate or other superhard composite materials which exhibit low thermal expansion rates and are generally chemically inert. The resultant rigid composite structure may possess higher tolerances to high pressures and high temperatures within the second bore.

대표청구항 ▼

What is claimed is: 1. A rigid composite structure, comprising:a tubular body, the tubular body having a first end, a second end, a longitudinal axis, and a first bore formed along the longitudinal axis, the tubular body being formed from a metallic material; anda plurality of segments, each of the

What is claimed is: 1. A rigid composite structure, comprising:a tubular body, the tubular body having a first end, a second end, a longitudinal axis, and a first bore formed along the longitudinal axis, the tubular body being formed from a metallic material; anda plurality of segments, each of the segments having a first end face, a second end face spaced from the first end face, a center hole extending through the first end face to the second end face, and being formed from a super hard material selected from the group consisting of natural diamond, synthetic diamond, polycrystalline diamond, single crystalline diamond and cubic boron nitride, the plurality of segments being disposed adjacent one another within at least a portion of the first bore and with the center holes of the segments being aligned along the longitudinal axis to form a second bore that is substantially co-axial with the first bore, the plurality of segments including:at least one first segment having an interfacing material bonded to the super hard material at one of the first end face and the second end face,at least one second segment having an interfacing material bonded to the super hard material at the other of the first end face and the second end face, andthe end faces having the interfacing material bonded thereto being abutted together and brazed together with the interfacing material.