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Diamond composite teeth

A technology of diamond and composite teeth is applied in the field of drilling equipment to achieve the effect of solving premature failure and avoiding stress concentration areas

Inactive Publication Date: 2011-12-14
HUNAN FEIRAY COMPOSITE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention lies in: aiming at the technical problems existing in the prior art, the present invention provides a diamond composite tooth with simple and compact structure, low cost, which can effectively solve the problem of the stress concentration area, thereby effectively prolonging the service life.

Method used

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 2 As shown, the diamond composite tooth of the present invention includes a cemented carbide body 1 and a diamond composite layer 2, the diamond composite layer 2 is sintered and connected to the upper side 11 and the top surface 12 of the cemented carbide body 1, and the top surface of the cemented carbide body 1 The thickness of the diamond composite layer 2 at the surface 12 is greater than the thickness of the diamond composite layer 2 at the upper side 11 . As the thickness of the diamond composite layer 2 at the position of the top surface 12 increases, the problem of early failure of the composite tooth due to insufficient thickness of the top of the composite tooth can be effectively avoided.

[0021] The top surface 12 of the cemented carbide body 1 is provided with more than one concave portion 13 . ...

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Abstract

Disclosed is a diamond composite tooth, which comprises a cemented carbide body (1) and a diamond composite layer (2), wherein the diamond composite layer (2) is sintered so as to attach to an upper side face (11) and top face (12) of the cemented carbide body (1); the thickness of the diamond composite layer (2) at the top face (12) of the cemented carbide body (1) is more than the thickness of the diamond composite layer (2) at the upper side face (11). The present invention has the advantages of a simple and compact structure, low cost, and the ability to solve the problem of regions where stress is concentrated, thus effectively extending the service life thereof.

Description

technical field [0001] The invention mainly relates to the field of drilling equipment, in particular to a diamond composite tooth. Background technique [0002] Diamond composite teeth are sintered by diamond micropowder and cemented carbide substrate under ultra-high pressure and high temperature conditions. This product has high strength, high wear resistance and excellent impact toughness, and is widely used in exploration, mining, petroleum, Coal and other industries. At present, the shape of the base body of diamond special-shaped teeth used in down-the-hole hammers, roller cone bits, picks, etc. is as follows: figure 1 As shown, it mainly includes a cemented carbide body 1 and a diamond composite layer 2 coated on the top of the cemented carbide body 1. The special-shaped teeth with this shape design have the following main problems during use: 1. The top position of the special-shaped tooth is the most severely worn position, but because the thickness of the diam...

Claims

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Application Information

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IPC IPC(8): E21B4/06E21B10/52E21C35/183
CPCE21B10/52E21B4/06E21C35/183E21B10/5673E21C2035/1816E21C35/1837E21B10/5735
Inventor 邵浩明武登进周志平张青
Owner HUNAN FEIRAY COMPOSITE MATERIAL