Diamond Micro Powder is primarily used in the grinding and polishing processes of workpiece finishing. Users often require the lowest diamond concentration, the fastest cutting speed, the best surface finish, the optimal geometric shape of the workpiece, and the minimal possible surface micro-damage. To meet these usage requirements, having the right micro-powder is essential. Thus, the following indicators must be strictly controlled: particle size distribution, particle shape, impurity content, diamond strength, etc. This article will introduce the particle size distribution and detection methods of Diamond Micro Powder.
The particle size of Diamond Micro Powder refers to the diameter of the micro-powder particles, which is a measure of particle size. For regular spherical particles, the particle size is the diameter of the sphere. However, Diamond Micro Powder particles are generally not regular spheres; they are irregular shapes such as rod-like or needle-like. Therefore, it is difficult to represent the size of Diamond Micro Powder particles with a single value, leading to the introduction of the concept of equivalent particle size to represent the particle size of Diamond Micro Powder particles.
When a certain physical property of a particle is the same or similar to that of a homogeneous spherical particle, the diameter of the spherical particle is used to represent the diameter of the particle. The particle size of the spherical particle is the equivalent particle size of the particle. There are several types of equivalent particle sizes: the equivalent projection area diameter is the diameter of a spherical particle with the same projection area as the actual particle, which is the particle size measured by the image method; the equivalent volume diameter is the diameter of a sphere with the same volume as the actual particle, generally considered the diameter measured by the laser method.
The particle size distribution of Diamond Micro Powder refers to the distribution ratio of diamond particles of various particle sizes. It is a very important parameter for measuring the quality of Diamond Micro Powder. To some extent, the concentration degree of the particle size distribution determines the quality of the product.
In applications, products of various particle size specifications have corresponding grinding efficiency and surface processing smoothness. Users can choose products with different particle size specifications according to different processing requirements. Generally speaking, strict control over coarse particles in Diamond Micro Powder is necessary because coarse particles can cause scratches on the workpieces during application, leading to serious quality issues.
This is especially critical in precision polishing fields, where scratches caused by coarse particles can directly lead to the scrapping of expensive workpieces, resulting in significant losses. Furthermore, the presence of fine particles can also cause corresponding issues, such as reducing grinding efficiency in grinding processes. Therefore, there are also clear requirements for this.
The main methods for detecting the particle size distribution of Diamond Micro Powder include imaging methods, sedimentation methods, centrifugal methods, laser methods, and Coulter methods.
The imaging method uses a particle image analyzer to detect the particle size of Diamond Micro Powder. The sedimentation method measures particle size distribution based on the sedimentation rate of particles in a liquid. Depending on the different sedimentation rates of particles of various sizes in a liquid, it is a method for measuring the particle size distribution of Diamond Micro Powder.
The centrifugal sedimentation method places the sedimentation tank in a high-speed rotating disk, speeding up particle sedimentation, thereby significantly reducing measurement time and improving measurement accuracy, making it possible to detect ultra-fine particles. The Coulter method is suitable for measuring powder samples with uniform particle size (narrow particle size distribution range), as well as measuring the size and number of rare solid particles in water. It has the advantages of high resolution, fast measurement speed, and easy operation.
English
日本語
한국어
français
Deutsch
Español
italiano
русский
português
العربية
tiếng việt
