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Polycrystalline diamond compound sheet and manufacturing process thereof

A polycrystalline diamond and manufacturing process technology, used in drilling equipment, earth-moving drilling, drill bits, etc., can solve the problems of affecting cutting efficiency, increasing production costs, and high wear levels, achieving difficult separation, improving cutting performance, and improving durability. abrasive effect

Inactive Publication Date: 2013-02-06
福建万龙金刚石工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the long-term practical production process, it is found that the existing drill bits made of diamond, because of their frequent and long-term contact with hard substances, lead to high wear and low wear resistance, and long-term operation It will definitely affect the cutting efficiency and increase the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A polycrystalline diamond composite sheet includes a cemented carbide substrate, and a high-density polycrystalline diamond layer is compounded on the cemented carbide substrate. The contact surface of the cemented carbide substrate and the high-density polycrystalline diamond layer is provided with concave-convex parts matched with each other. The components and mass parts of the high-density polycrystalline diamond layer are 90 parts of diamond powder, 0.5 parts of rare earth, 2 parts of cobalt and 1 part of nickel. The composition of the rare earth is one or two or more of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium and yttrium.

[0021] A production process of a polycrystalline diamond composite sheet. After mixing 90 parts of diamond micropowder, 0.5 part of rare earth, 2 parts of cobalt and 1 part of nickel in mass parts, the mixed material is s...

Embodiment 2

[0029] This embodiment is roughly the same as Embodiment 1. A polycrystalline diamond composite sheet includes a cemented carbide substrate on which a high-density polycrystalline diamond layer is compounded. The contact surface of the cemented carbide substrate and the high-density polycrystalline diamond layer is provided with concave-convex parts matched with each other. The components and mass parts of the high-density polycrystalline diamond layer are 95 parts of diamond powder, 3 parts of rare earth, 10 parts of cobalt and 2 parts of nickel. The composition of the rare earth is one or two or more of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium and yttrium.

[0030] A process for making a polycrystalline diamond composite sheet. After mixing the mass parts of 90-95 parts of diamond micropowder, 3 parts of rare earth, 10 parts of cobalt and 2 parts of nic...

Embodiment 3

[0032] This embodiment is roughly the same as Embodiment 1 and Embodiment 2, and is a preferred solution of the present invention. A polycrystalline diamond composite sheet includes a cemented carbide substrate, and a high-density polycrystalline diamond layer is compounded on the cemented carbide substrate. . The contact surface of the cemented carbide substrate and the high-density polycrystalline diamond layer is provided with concave-convex parts matched with each other. The components and mass parts of the high-density polycrystalline diamond layer are 92 parts of diamond powder, 1.5 parts of rare earth, 6 parts of cobalt, and 1.5 parts of nickel. The composition of the rare earth is one or two or more of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium and yttrium.

[0033] A process for making a polycrystalline diamond composite sheet. The mass parts are ...

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PUM

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Abstract

The invention discloses a polycrystalline diamond compound sheet and a manufacturing process thereof. The polycrystalline diamond compound sheet comprises a hard alloy base body, wherein a high-density polycrystalline diamond layer is compounded on the hard alloy base body; 90 to 95 parts by weight of diamond, 0.5 to 3 parts by weight of rare earth, 2 to 10 pars by weight of cobalt and 1 to 2 parts by weight of nickel are mixed; the mixed material is subjected to ultra-high-pressure high-temperature treatment; under the condition that the pressure intensity of the ultra-high-pressure high-temperature treatment is 5.6 to 7.5 Gpa, and the temperature is not less than 1,300 DEG C, the mixed material is manufactured into a semi-finished product; and the semi-finished product is compounded with the hard alloy base body to form a finished product. The polycrystalline diamond compound sheet is high in hardness, high in abrasion resistance, high in thermal stability, high in flexibility and high in cutting efficiency; the service life can be greatly prolonged; and the production cost of an enterprise is reduced.

Description

technical field [0001] The invention relates to a diamond cutting tool, in particular to a polycrystalline diamond composite sheet and its manufacturing process. Background technique [0002] The drill that makes the cutting edge is called a diamond drill. The drill bit is a one-piece drill bit. The whole drill bit has no moving parts and has a relatively simple structure. It has high strength, high wear resistance and impact resistance. It is one of the three new technologies of drilling in the world in the 1980s. In the long-term practical production process, it is found that the existing drill bits made of diamond, because of their frequent and long-term contact with hard substances, lead to a high degree of wear and low wear resistance, and long-term operation It will definitely affect the cutting efficiency and increase the production cost. Contents of the invention [0003] The present invention provides a polycrystalline diamond composite sheet and its manufacturi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/46B22F1/00B22F7/06
Inventor 王宏志黄莹祥黄毅
Owner 福建万龙金刚石工具有限公司