Knowledge about Sieve Mesh

Mesh Count: Mesh count refers to the number of mesh openings per inch of length. It can also be abbreviated as "mesh." For example, a 100-mesh sieve means there are 100 mesh openings in one inch (2.54 cm).

Note: It is the number of openings per inch of length, not per square inch.

Aperture Size: The parameter that describes the size of the mesh openings. If the openings are square, the aperture size is actually the width of the openings. In the diagram on the right, "w" represents the aperture size.

There is an inverse relationship between aperture size and mesh count; the higher the mesh count, the smaller the aperture size. For instance, the aperture size of a 300-mesh sieve is smaller than that of a 100-mesh sieve.

Wire Diameter: The diameter of the metal wires used to weave the sieve mesh.

It is easy to understand that finer metal wires can create smaller aperture sieves.

When unsure of the national standard being used, it is advisable to describe the sieve mesh using "aperture size" rather than "mesh count." For example, "I need to purchase a sieve mesh with an aperture size of 0.25 mm" instead of "I need to purchase a 60-mesh sieve."

Sieve mesh is a component with a high failure rate in vibrating sieves. Choosing the wrong sieve mesh can accelerate wear and tear during production. Here are some tips on how to choose the right vibrating sieve mesh:

Among various materials, high manganese steel sieve mesh is considered reliable in quality. It is woven from manganese steel wires with diameters ranging from 1.6 mm to 12 mm. Using an embedded weaving method, the intersection points of warp and weft are not prominent, resulting in a flat sieve surface and uniform force distribution. It exhibits good plasticity and toughness, ensuring better performance and longer service life.

High manganese steel has high strength, stiffness, and load-bearing capacity. When subjected to strong impact and friction, its surface undergoes plastic deformation, resulting in significant work hardening and an increase in surface hardness to above HRC60, thus achieving high wear resistance. The interior maintains high plasticity and toughness.

Moreover, as the old surface wears away, a new wear-resistant layer forms, extending the service life to 4-8 times that of ordinary sieve meshes. It is commonly used in large-scale mining industries and as a protective mesh in mechanical vibrating sieve machines, cylindrical sieve machines, electromagnetic high-frequency sieve machines, and asphalt mixing machines.

Polyurethane sieve mesh is also durable and wear-resistant. Polyurethane itself has high elastic modulus, high impact absorption, high abrasion resistance, and high tensile strength. Therefore, it has a high load-bearing capacity, which is more than 2.5 times that of rubber sieve plates. Its service life is 8-10 times longer than ordinary metal sieve plates, three times longer than stainless steel sieve surfaces, and 3.9 times longer than natural rubber. It is currently one of the sieve surface materials with better wear resistance.

The production material of polyurethane sieve mesh is a polymeric organic elastomer, exhibiting good wear resistance, flexural endurance, and high load-bearing capacity. It has undergone special treatment to ensure that it does not delaminate under long-term alternating loads.

Stainless steel sieve mesh is made of materials such as 201, 302, 304, 304L, 316, etc., and has the following characteristics:

Stainless steel sieve mesh is commonly used for screening and filtering in acidic and alkaline environments, as well as in the petroleum industry for mud screens and in the chemical and fiber industries for screening filters.

Punched sieve mesh refers to sieve mesh created by punching target patterns into the material using a punch press. It is generally made of stainless steel, aluminum, cold/hot-rolled steel, copper, PVC film, and other materials. The hole shapes are diverse, including elongated holes, square holes, round holes, hexagonal holes, fish scale holes, and stretched irregular holes.

Punched sieve mesh is lightweight, anti-slip, aesthetically pleasing, and has good filtration performance. It is commonly used in environmental noise control barriers in transportation and municipal facilities, as well as in grinding screens, ore screens, and I-beam screens in mining.