A kind of polycrystalline resin diamond abrasive and preparation method thereof

A polycrystalline diamond and diamond technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of limited use range of diamond abrasives, reduced grinding efficiency, shortened service life, etc., to achieve lighter color and longer service life , the effect of increasing crystal transparency

Active Publication Date: 2022-06-07
郑州益奇超硬材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During high-speed grinding and high-efficiency ultra-precision grinding, it is easy to expand and break prematurely
Reduced grinding efficiency, shortened service life, and poor processing quality
The scope of use of polycrystalline resin diamond abrasives is limited

Method used

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  • A kind of polycrystalline resin diamond abrasive and preparation method thereof
  • A kind of polycrystalline resin diamond abrasive and preparation method thereof
  • A kind of polycrystalline resin diamond abrasive and preparation method thereof

Examples

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preparation example Construction

[0022] A preparation method of polycrystalline resin diamond abrasive, specifically, the uniform mixed powder of polycrystalline diamond abrasive, metal and alloy is synthesized and prepared by a high temperature and high pressure method, and the metal and alloy account for 5%-16% of the weight of the mixed powder; the The metal is at least one of copper, aluminum and zinc, and the alloy is at least one of copper-zinc alloy and copper-aluminum alloy. The polycrystalline diamond abrasive of the present application is a commercially available conventional polycrystalline diamond abrasive synthesized by a high temperature and high pressure method.

[0023] Specifically, the cleaned polycrystalline diamond abrasive, metal and alloy powders are uniformly mixed and put into a metal cup. Metal cups are made of stainless steel, zirconium, niobium, molybdenum or tantalum. Then, the pyrophyllite blocks are loaded into the six-sided top press for high temperature and high pressure resyn...

Embodiment 1

[0028] A certain particle size of polycrystalline diamond abrasive synthesized by conventional high temperature and high pressure method is selected as the raw material, and 5.5% of zinc, 3% of copper and 1.5% of Cu85Al15 are added. After mixing evenly, put it into a molybdenum cup, and then put it into a synthesis block and put it into a six-sided top press for high temperature and high pressure synthesis.

[0029] Raise the pressure to 100MPa of the high pressure of the hydraulic system of the press within 50 seconds. After the internal synthesis pressure reached 6300 MPa, the pressure was maintained for 14 minutes.

[0030] Start heating after 80 seconds of pressure increase, the heating temperature is 1350-1450 degrees Celsius, and the heating time is 10 minutes.

Embodiment 2

[0032] Select polycrystalline diamond abrasive 60 / 80-400 / 500 mesh mixture synthesized by conventional high temperature and high pressure method as raw material, add aluminum 2.5%, copper 1%, Cu85Al15 2.5%, Cu60Zn40 4% and mix them evenly and put them in a molybdenum cup.

[0033] 60 seconds to increase the pressure to the high pressure of the hydraulic system of the press 100MPa. After the internal synthesis pressure reached 6300 MPa, the pressure was maintained for 12 minutes. Heating was started after 70 seconds of pressure increase. Heating temperature to 1350-1450 degrees Celsius, heating time 8 minutes.

[0034] According to the synthesis method of embodiment 1, select the polycrystalline diamond abrasive of different granularity as the polycrystalline resin diamond abrasive that raw material produces and the TI and TTI / TI performance of commercially available single crystal resin diamond abrasive and commercially available polycrystalline resin diamond abrasive The com...

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Abstract

The invention relates to the technical field of superhard material synthesis, and provides a preparation method of polycrystalline resin diamond abrasive, which is prepared by synthesizing uniformly mixed powder of polycrystalline diamond abrasive, metal and alloy through high temperature and high pressure method, and the metal and alloy account for the weight of the mixed powder 5%‑16% of 5%-16%; metals and alloys do not react with polycrystalline diamond abrasives under high temperature and high pressure and have a lower melting point than polycrystalline diamond abrasives. The invention also provides a polycrystalline resin diamond abrasive. The polycrystalline resin diamond abrasive of the invention has high impact resistance and thermal impact resistance.

Description

technical field [0001] The invention relates to the technical field of superhard material synthesis, in particular to a polycrystalline resin diamond abrasive and a preparation method thereof. Background technique [0002] Synthetic diamond abrasives are divided into single crystal diamond abrasives and polycrystalline diamond abrasives. Synthetic diamond abrasives are mostly used in resin bond grinding wheels and other products. In the industry, single crystal or polycrystalline diamond abrasives are generally referred to as single crystal or polycrystalline resin diamond abrasives. [0003] The existing single crystal resin diamond abrasive has high strength, few internal impurities, good thermal stability, and is resistant to thermal shock during cutting. Suitable for strong grinding and high work efficiency. [0004] However, in the grinding process, the cutting edge of the single crystal resin diamond abrasive crystal is not easy to partially break itself to generate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C1/10C22C26/00B22F3/02C09K3/14
CPCC22C1/05C22C26/00B22F3/02C09K3/1409
Inventor 邹泽宏李海燕崔静芝李长虹
Owner 郑州益奇超硬材料有限公司
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