Performance characteristics of five types of vibrating screen meshes

Research indicates that the choice of vibrating screen mesh material significantly affects operational efficiency and lifespan in various industries, particularly in mining and mineral processing. This article discusses the performance characteristics of five types of screen meshes commonly utilized, including high manganese steel, polyurethane, stainless steel, welded, and perforated screens, each featuring unique attributes that cater to specific operational demands.

High Manganese Steel Screen Mesh

High manganese steel screen mesh is recognized for its exceptional quality and reliability. This screen is crafted using manganese steel wire, with diameters ranging from 1.6mm to 12mm, adopting an embedded weaving method that creates a flat surface with uniform force distribution. Not only does it combine good plasticity and toughness, but it also guarantees a longer lifespan.

Strength and Wear Resistance

This material exhibits high strength, rigidity, and load-bearing capacity. When impacted, the mesh undergoes work-hardening, raising the surface hardness value above HRC60, which results in superior wear resistance while maintaining internal plasticity and toughness. Post-wear, a new wear-resistant layer develops, extending the service life to 4-8 times that of standard screens.

Polyurethane Screen

Polyurethane screens stand out due to their excellent wear resistance and load-bearing capacity. The material is an organic elastomer known for its high elastic modulus, allowing it to effectively absorb impacts and resist wear. Its load capacity surpasses that of rubber screen plates by over 2.5 times, providing a service life that is 8-10 times longer than common metal panels and roughly 3 times that of stainless steel surfaces.

Durability and Flexibility

The robust characteristics of the polyurethane screen come from special treatments ensuring no delamination under fluctuating loads, making it an optimal choice for demanding applications.

Stainless Steel Screen

Stainless steel screens, comprising materials like 201, 302, 304, and 316 variants, are favored for their superior acid and alkali resistance. These meshes demonstrate high tensile strength, durability, and resistance to oxidation—particularly the 304 stainless steel, which remains effective even at temperatures reaching 800°C.

Versatility and Maintenance

Stainless steel's adaptability for various uses is complemented by low maintenance needs, as the high finish eliminates the requirement for surface treatments. This mesh is frequently employed in environments where acid and alkalinity are a concern.

Welded Screen

Welded screens are made from high manganese steel and resonate well with users due to their effective construction methods. Unlike woven varieties, welded screens require specific techniques to account for the brittleness of high manganese materials during manufacturing, particularly managing heat affected zones to promote integrity post-welding.

Challenges in Fabrication

The welding process must maneuver around the pour temperature range of high manganese steel to ensure superior performance, utilizing appropriate materials and cooling techniques during welding to maintain durability.

Perforated Screen

Perforated screens differentiate themselves by employing a press to create specific hole patterns, allowing for various applications across materials such as stainless steel and aluminum. This type of screen enables selective filtration and showcases attributes like lightweight design and effective aesthetic appeal.

Applications and Efficiency

Perforated screens are often integral in environmental noise control and mining applications due to their filtering capabilities and robust design, accommodating an array of hole types to suit specific filtering requirements.

Choosing the appropriate vibrating screen mesh material is crucial as it directly influences equipment longevity and operational costs. Users must prioritize wear-resistant and high-quality materials to prevent rapid wear and maintain production efficiency.