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Anti-impact diamond layer, diamond composite sheet and preparation method for diamond composite sheet

A technology of diamond composite sheet and diamond layer, applied in the field of superhard material products, can solve the problems of inability to meet drilling use, high hardness and brittleness of diamond composite sheet, reduce abnormal damage of drill teeth, and high cutting sharpness , the effect of improving the footage

Inactive Publication Date: 2014-08-06
河南亚龙金刚石制品股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of high hardness and high brittleness of the existing diamond composite sheet, which cannot meet the needs of drilling under large impact loads, the present invention provides an impact-resistant diamond layer, a diamond composite sheet and a preparation method thereof. The composite sheet prepared by the method has the advantages of strong impact resistance and good sharpness, and is especially suitable for mining and drilling in hard strata.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The impact-resistant diamond composite sheet of this embodiment is prepared by the following steps:

[0032] (1) Ingredients: Weigh the following raw materials according to the following weight ratio: diamond: 76 parts, graphite powder: 19 parts, catalyst: 5 parts; the catalyst is composed of the following weight ratio materials: iron: 59 parts , nickel: 17 parts, cobalt: 10 parts, manganese: 6 parts, silicon: 8 parts.

[0033] (2) Mixing: Pour the material into the mixing tank, then add cemented carbide balls with the same weight and diameter of 8-10mm into the mixing tank as the mixing medium, and install them in a three-dimensional mixer for mixing. Feed time was 4.5 hours.

[0034] (3) Purification treatment: Implant the material obtained in step 2 into a high-temperature furnace for treatment at a temperature of 860° C., a pressure of 50 Pa, and a time of 3.5 hours.

[0035] (4) Assembly: put the material obtained in step 3 into a metal sleeve cup, and then put i...

Embodiment 2

[0040] The impact-resistant diamond composite sheet of this embodiment is prepared by the following steps:

[0041] (1) Ingredients: Weigh the following raw materials according to the following weight ratio: diamond: 77.5 parts, graphite powder: 15 parts, catalyst: 5 parts; the catalyst is composed of the following weight ratio materials: iron: 55 parts , nickel: 20 parts, cobalt: 10 parts, manganese: 10 parts, silicon: 5 parts.

[0042] (2) Mixing: Pour the material into the mixing tank, then add cemented carbide balls with the same weight and diameter of 8-10mm into the mixing tank as the mixing medium, and install them in a three-dimensional mixer for mixing. Feed time was 5.5 hours.

[0043] (3) Purification treatment: Implant the material obtained in step 2 into a high-temperature furnace for treatment at a temperature of 870° C., a pressure of 50 Pa, and a time of 3 hours.

[0044] (4) Assembly: put the material obtained in step 3 into a metal sleeve cup, and then put ...

Embodiment 3

[0049] The impact-resistant diamond composite sheet of this embodiment is prepared by the following steps:

[0050] (1) Ingredients: Weigh the following raw materials according to the following weight ratio: diamond: 79 parts, graphite powder: 10 parts; catalyst: 4.7 parts; the catalyst is composed of the following weight ratio materials: iron: 48 parts , nickel: 16 parts, cobalt: 11 parts, manganese: 16 parts, silicon: 9.6 parts.

[0051] (2) Mixing: Pour the material into the mixing tank, then add cemented carbide balls with the same weight and diameter of 8-10mm into the mixing tank as the mixing medium, and install them in a three-dimensional mixer for mixing. The feeding time is 5 hours.

[0052] (3) Purification treatment: Implant the material obtained in step 2 into a high-temperature furnace for treatment at a temperature of 860° C., a pressure of 20 Pa, and a time of 4 hours.

[0053] (4) Assembly: put the material obtained in step 3 into a metal sleeve cup, and the...

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Abstract

The invention discloses an anti-impact diamond layer, an anti-impact diamond composite sheet and a preparation method for the diamond composite sheet. Coarse granular diamond is used as a main raw material, graphite is used as a filling agent, and iron-based powder is used as an accelerant; the diamond layer comprises the following components in part by weight: 70 to 80 parts of diamond, 10 to 20 parts of graphite powder, and 3 to 12 parts of accelerant; and the accelerant consists of the following materials in part by weight: 45 to 60 parts of iron, 15 to 20 parts of nickel, 5 to 15 parts of cobalt, 5 to 20 parts of manganese, and 3 to 10 parts of silicon. The method comprises the following steps of: mixing the raw materials in the ratio uniformly, pre-pressing the mixture and a hard alloy matrix into a composite sheet, filling into a pyrophyllite block to form a structural block, putting the structural block into a 6-surface diamond presser, sintering and electrolyzing at a high temperature under high pressure, and thus obtaining the diamond composite sheet. The diamond composite sheet has the characteristics of big pores and a mesh connection structure, and is quite suitable for drilling medium hard and hard strata due to excellent sharpness and impact toughness.

Description

technical field [0001] The invention relates to the field of superhard material products, in particular to an impact-resistant diamond layer, a diamond composite sheet and a preparation method thereof, which are mainly used in drilling operations in medium-hard and hard formations. Background technique [0002] Diamond composite sheet refers to a composite material made by adding a small amount of metal or non-metallic binder to diamond abrasive grains and synthesized at high temperature and high pressure. Because of its excellent properties such as high hardness, good thermal conductivity, and high impact resistance, It is widely used in oilfield mining, infrastructure construction, house maintenance, mechanical processing, geological exploration and other fields. With the development of science and technology, it has also become an indispensable key material in high-tech fields such as microelectronics, communications, and aerospace. At present, diamond compacts generally ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/04B22F1/00B22F7/06B22F3/24C25F3/02
Inventor 李富玲王恒陈强花波波方艳娜
Owner 河南亚龙金刚石制品股份有限公司
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