Method for processing polycrystalline diamond for diamond processing

A polycrystalline diamond and processing method technology, which is applied in the process of applying ultra-high pressure, can solve the problems of poor self-sharpening performance and low grinding efficiency, and achieves high grinding efficiency, high utilization rate and good self-sharpening performance.

Inactive Publication Date: 2011-01-12
ZHENGZHOU SANHE DIAMOND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most polycrystalline diamond PCDs used for processing diamonds have low grinding ef

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of processing method of polycrystalline diamond PCD for diamond processing, the detailed steps of described processing method are as follows:

[0023] a, raw material composition: represented by weight percentage, the raw material adopted is composed of diamond powder 60% and nickel Ni 40%; Wherein 60% diamond powder is made of 40% W20 diamond powder, 35% W15 diamond powder and Composed of 25% W5~7 diamond powder;

[0024] B, take by weighing diamond powder and nickel according to the raw material composition described in step a, add the boron B that accounts for 0.3% of total raw material amount in addition after mixing, its raw material and boron are packed in the carbon synthesis mould, then will be equipped with raw material and The carbon synthesis mold of boron is placed in a vacuum furnace for 60 minutes; the vacuum degree in the vacuum furnace is 0.001Pa, and the temperature is 120°C;

[0025] c. Put the semi-finished product obtained in step b into a di...

Embodiment 2

[0029] A kind of processing method of polycrystalline diamond PCD for diamond processing, the detailed steps of described processing method are as follows:

[0030] a, raw material composition: represented by weight percentage, the raw material adopted is composed of diamond powder 58% and nickel Ni 42%; Wherein 58% diamond powder is made of 40% W20 diamond powder, 35% W15 diamond powder and Composed of 25% W5~7 diamond powder;

[0031] B, take by weighing diamond powder and nickel according to the raw material composition described in step a, add the boron B that accounts for 0.28% of total raw material amount in addition after mixing, its raw material and boron are packed in the carbon synthesis mould, then will be equipped with raw material and The carbon synthesis mold of boron is placed in a vacuum furnace for 58 minutes; the vacuum degree in the vacuum furnace is 0.0009Pa, and the temperature is 100°C;

[0032] c. Put the semi-finished product obtained in step b into a ...

Embodiment 3

[0036] A kind of processing method of polycrystalline diamond PCD for diamond processing, the detailed steps of described processing method are as follows:

[0037] a, raw material composition: represented by weight percentage, the raw material adopted is composed of diamond powder 62% and nickel Ni 38%; Wherein 62% diamond powder is made of 40% W20 diamond powder, 35% W15 diamond powder and Composed of 25% W5~7 diamond powder;

[0038] B, take by weighing diamond powder and nickel according to the raw material composition described in step a, add the boron B that accounts for 0.32% of total raw material amount in addition after mixing, its raw material and boron are packed in the carbon synthesis mould, then will be equipped with raw material and The carbon synthesis mold of boron is placed in a vacuum furnace for 62 minutes; the vacuum degree in the vacuum furnace is 0.0012Pa, and the temperature is 150°C;

[0039] c. Put the semi-finished product obtained in step b into a ...

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PUM

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Abstract

The invention provides a method for processing polycrystalline diamond for diamond processing. The method comprises the following steps of: mixing diamond powder and metal nickel serving as basic raw materials with a certain amount of boron, and adding the mixture into a carbon synthetic die; heating the synthetic die in a vacuum furnace in vacuum; putting a vacuum heated semi-finished product into a diamond hexa-orientation press for high temperature high pressure synthesis, and releasing pressure to obtain the polycrystalline diamond PCD for diamond processing. When the polycrystalline diamond PCD prepared by the technical scheme is used for processing the diamond, the product is soft, and has good impact toughness and higher abrasion resistance. Compared with polycrystalline diamond TSP series for petroleum and core bits, the polycrystalline diamond PCD has much lower abrasion consumption; and compared with natural diamond, the polycrystalline diamond PCD has higher grinding efficiency. Furthermore, the product has good self-sharpening performance and high grinding efficiency.

Description

technical field [0001] The invention relates to a processing method of polycrystalline diamond, in particular to a processing method of polycrystalline diamond for diamond processing. Background technique [0002] Diamond polycrystalline PCD (Polycrystalline diamond) is sintered with fine-grain diamond single crystal under high temperature and high pressure. This product has good wear resistance, thermal stability, compressive strength and impact toughness, and is widely used in geological Exploration, oil extraction, natural gemstone processing industry and machining and dressing tools and other fields. At present, there are two types of synthetic diamond polycrystalline PCD and synthetic diamond polycrystalline TSP. The main shapes are triangular, square, rectangular, cylindrical, and arc-shaped at both ends, and its diversification is suitable for various drilling tools and geological requirements. [0003] The wear rate of polycrystalline diamond PCD used for processin...

Claims

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Application Information

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IPC IPC(8): B01J3/06
Inventor 刘小选苏振岭
Owner ZHENGZHOU SANHE DIAMOND
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