Flat top screen

Product Overview

Unlike stainless steel mesh (high cost), it offers cost-effective durability with tensile strength up to 1200MPa. Mesh size ranges from 2mm to 100mm, wire diameter 1.2-6.0mm, complying with GB/T 1220 standards for mining equipment.

Product Features

High Hardness & Wear Resistance: Through-hardening treatment achieves surface hardness HRC 45-55 and core hardness HRC 35-40, balancing wear resistance and toughness. In iron ore screening, it lasts 6-8 months vs. 2-3 months for Q235 mesh.

Strong Tensile Strength: Tensile strength up to 1200MPa and elongation at break ≥10%, withstanding high vibration loads (3000rpm) and impact from large ore chunks (≤50kg). No deformation under 500kg/m² screening load.

Anti-Clogging Structure: Woven mesh (plain/twill weave) with staggered openings or punched mesh with tapered holes (10° incline) reduces ore clogging by 70%. The smooth surface (Ra < 1.0μm) allows easy ore discharge.

Cost-Effective Durability: Price is 30-50% lower than 316L stainless steel mesh, while service life is 2x longer than Q235 steel mesh. Total cost of ownership reduced by 40% for mining operations.

Applications

Iron Ore Screening: A Chinese iron ore mine used 10mm woven 65mn mesh (wire diameter 3.0mm), screening iron ore (particle size 10-60mm) with 92% efficiency. Replacement frequency reduced from monthly to quarterly.

Coal Mining Screening: An Indonesian coal mine adopted 20mm punched 65mn mesh, separating coal from gangue and increasing clean coal yield by 10%. The high strength withstood 2500rpm vibration without tearing.

Aggregate Mining Screening: A Australian limestone quarry used 50mm 65mn mesh (HRC 50), screening crushed limestone and reducing oversize particles by 90%. Wear resistance cut maintenance costs by $25,000/year.

FAQ

Q: What’s the relationship between hardness and service life?

A: Higher hardness (within HRC 45-55) increases wear resistance—each HRC point adds 5% service life. Avoid hardness >HRC 55—brittleness increases by 40%, leading to mesh cracking under impact.

Q: Can it be used for wet mining screening?

A: Yes, but apply anti-rust coating (zinc plating or paint) to prevent corrosion. In wet conditions, service life is reduced by 20% vs. dry—clean with high-pressure water (10-12 bar) after use to remove moisture.

Q: Which weave type is better for mining?

A: Twill weave (2-over-2-under) is preferred for mining, as it is 25% stronger than plain weave and resists abrasion better. Punched mesh is suitable for large particles (≥50mm) but has lower open area (30-40% vs. 40-50% for woven).

Q: What’s the maximum mesh size for 65mn screen mesh?

A: Standard max mesh size is 100mm (wire diameter 6.0mm). Larger sizes (up to 200mm) require reinforced edges (steel frame) to prevent sagging—sagging reduces screening efficiency by 30%.