Comparison Table of Mesh and Aperture

Comparison Table of Mesh and Aperture
Standard mesh size:
1. Mesh refers to the number of empty holes per square inch sieve, 50 mesh refers to 50 holes per square inch, and 500 mesh refers to 500 holes. The higher the mesh number, the more holes there are. In addition to representing the aperture of the sieve, it is also used to represent the particle size that can pass through the sieve. The higher the mesh size, the smaller the particle size. The standard sieve needs to be matched with a standard vibrating screen machine to accurately determine.
2. The particle size of the powder is called particle size. Due to the complex shape of particles, there are usually several representation methods, such as screening particle size, settling particle size, equivalent volume particle size, and equivalent surface area particle size. Sieve size refers to the size of the mesh through which particles can pass through a sieve, expressed as the number of mesh openings within a 1-inch (25.4mm) wide sieve, hence it is called the "mesh size". At present, there is no unified technical standard for powder particle size at home and abroad, and each enterprise has its own definition and representation method for particle size indicators. There are different standards for screen specifications in different countries and industries, so the meaning of "mesh" is also difficult to unify. At present, the calculation diameter of equivalent volume particles is commonly used internationally to represent particle size. with μ M or mm represents
The mesh size of a sieve is the number of holes, which refers to the number of holes arranged in a length of one inch (25.4mm). Not 25.4 square millimetre, but in the column of this length. For example, in a field shaped shape, if the total length of the two holes on the far left is 25.4, then it is two holes, not four holes. The larger the mesh size, the smaller the aperture.
The calculation method for mesh size: 25.4/(wire diameter+aperture)=mesh size
Screen calculation formula
1、 Mesh size: W=L ÷ n - d, W - average mesh size (mm), L - adjacent mesh length (mm), d - average wire diameter (mm)
2、 Mesh size: The number of mesh holes in a 1-inch (25.4mm) length.
1 mesh=1 aperture+1 wire diameter mesh/inch=mesh count/25.4mm
3、 Finding mesh size=25.4mm ÷ (aperture+wire diameter)
4、 Find mesh size=25.4mm ÷ mesh size - wire diameter