Manufacturing Process of Diamond Micropowder
-2023-02-20 15:38:10 -
With the development of high-tech industry, the surface finish of many precision devices is very high, such as computer disks, magnetic heads, optical communication devices, optical crystals, semiconductor substrates and other devices, all require precise polishing. The polishing requirements of the jewelry industry are also getting higher and higher. If there are any bumps, scratches, or foreign matter attached to the surface beyond the allowable range, the accuracy, performance and aesthetics of the design cannot be guaranteed.
The application of abrasive diamond micro powder in industrial life can be seen everywhere. We want to introduce to you the story behind the diamond powder---how to manufacture synthetic polishing micron diamond powder and the production process of diamond powder.
The jet mill uses compressed air as the working medium. The compressed air is sprayed into the grinding chamber through a special supersonic nozzle at high speed. The airflow carries the material to move at a high speed, causing a strong collision, friction, and shear between the material and the material, so as to achieve crushing the goal.
The biggest advantage of the jet mill is that it is not limited by the mechanical line speed, and can generate a high air velocity. In particular, the supersonic jet mill can generate a flow velocity several times the speed of sound, so it can generate huge kinetic energy, and it is relatively easy to obtain micron and submicron ultrafine powders.
For the production process of diamond powder, particle size classification is a very important process. At present, the oldest grain size classification method in China is the combination of Natural Sedimentation and Centrifugation Method to produce fine powder.
The natural sedimentation method is based on the principle that particles with uniform specific gravity have different sedimentation speeds in water due to different particle sizes, and the particle size classification is carried out by controlling the sedimentation height and sedimentation time. The equipment is easy to operate, the quality is stable. But the method cycle is long, and the labor efficiency is low.
Centrifugation Method: In essence, it is a kind of sedimentation method, which places the sedimentation tank in a high-speed rotating disc to speed up the sedimentation speed of particles, thereby greatly shortening the measurement time, improving the measurement accuracy, and making it possible to detect ultrafine particles.
The speed of the current centrifugal particle size analyzer is as high as 20,000 rpm, and the detection limit reaches the nanometer level.
The application of abrasive diamond micro powder in industrial life can be seen everywhere. We want to introduce to you the story behind the diamond powder---how to manufacture synthetic polishing micron diamond powder and the production process of diamond powder.
Crushing Method of Diamond Micron Powder
In China, people use a ball mill to crush diamonds, to produce diamond powder is the most common method, and it has been used for many years. However, due to the shortcomings of low production efficiency, it has been replaced by a jet mill.The jet mill uses compressed air as the working medium. The compressed air is sprayed into the grinding chamber through a special supersonic nozzle at high speed. The airflow carries the material to move at a high speed, causing a strong collision, friction, and shear between the material and the material, so as to achieve crushing the goal.
The biggest advantage of the jet mill is that it is not limited by the mechanical line speed, and can generate a high air velocity. In particular, the supersonic jet mill can generate a flow velocity several times the speed of sound, so it can generate huge kinetic energy, and it is relatively easy to obtain micron and submicron ultrafine powders.
Grading method of Diamond Dust
For the production process of diamond powder, particle size classification is a very important process. At present, the oldest grain size classification method in China is the combination of Natural Sedimentation and Centrifugation Method to produce fine powder.The natural sedimentation method is based on the principle that particles with uniform specific gravity have different sedimentation speeds in water due to different particle sizes, and the particle size classification is carried out by controlling the sedimentation height and sedimentation time. The equipment is easy to operate, the quality is stable. But the method cycle is long, and the labor efficiency is low.
Centrifugation Method: In essence, it is a kind of sedimentation method, which places the sedimentation tank in a high-speed rotating disc to speed up the sedimentation speed of particles, thereby greatly shortening the measurement time, improving the measurement accuracy, and making it possible to detect ultrafine particles.
The speed of the current centrifugal particle size analyzer is as high as 20,000 rpm, and the detection limit reaches the nanometer level.
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