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Conversion Method of Screen Mesh

2022-12-15
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First, let's understand the mesh number. The mesh refers to the number of holes on the inch screen. 50 mesh means 50 holes per inch. 500 mesh means 500. The higher the mesh number, the more holes there will be. In addition to the perforations of the screen, it is also used to indicate the particle size of the particles that can pass through the screen. The higher the mesh, the smaller the particle size.

The particle size of the powder is called the particle size. Due to the complexity of the particle shape, there are usually several expression methods such as sieving particle size, sedimentation particle size, equivalent volume particle size, and equivalent surface area particle size. The sieve size is the size of the sieve holes that the particles can pass through the sieve, expressed as the number of sieve holes in a 1 inch (25.4mm) wide sieve, so it is called the "mesh". At present, there is no unified powder particle size technical standard at home and abroad, and each enterprise has its own definition and expression method of particle size index. In different countries and different industries, the screen specifications have different standards, so the meaning of "mesh" is also difficult to unify. At present, international comparisons use the calculated diameter of particles of equivalent volume to express the particle size. Expressed in μm or mm. Attachment: Conversion relationship: 1 μm = 1 micrometres (micrometers) = 0.001 millimetres (millimeters).
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