The key specifications of diamond mesh include mesh size and wire thickness. The common mesh size ranges from 10mm×20mm to 100mm×200mm, and the wire thickness is 1mm-8mm . The tensile strength of ordinary diamond mesh can reach 500-800MPa, and the air permeability of standard mesh exceeds 70%. The material properties of the metal wire of diamond mesh are the basis for determining its quality. Commonly used materials must meet the corresponding standards. The tensile strength of low carbon steel wire should be ≥370MPa, and the elongation after fracture should be ≥23%.
The tensile strength of stainless steel wire should be ≥520MPa, the yield strength should be ≥205MPa, and the elongation should be ≥40%. The tensile strength of aluminum alloy wire should be ≥290MPa, and the yield strength should be ≥240MPa. If surface treatment is required, the galvanized layer thickness should be ≥80μm, and the plastic coating thickness should be ≥120μm. The galvanized layer must show no red rust after ≥480 hours of neutral salt spray testing, and the plastic coating must show no corrosion after ≥1000 hours.
Regarding processing technology, woven diamond mesh requires inspection of the diagonal deviation and wire diameter consistency. The diagonal deviation should be ≤±3% of the design value, and the wire diameter deviation within the same mesh sheet should be ≤±0.05mm. For stamped mesh, the burr height at the cut should be inspected, requiring ≤0.1mm. Appearance and dimensional deviations require the following: diamond angle deviation ≤±5°, side length deviation ≤±2% of the design value, mesh length and width deviation ≤±0.5% of the design value, and the actual wire diameter deviation from the design value ≤±0.08mm.
Mechanical performance testing includes tensile strength testing, deformation resistance testing, and weld reliability testing. The tensile strength test requires applying tension along the wire axis to a cut sample; the breaking strength must be ≥1.1 times the design tensile strength. The deformation resistance requirement is that after applying a uniformly distributed load of 1.5 times the design load, the permanent deformation should be ≤1% of the mesh side length, and there should be no breakage or weld detachment after unloading. The weld reliability requirement is that during a random weld tensile test, the weld breaking force should be ≥70% of the tensile strength of a single wire, and the breakage location must not be at the weld point.