Multilayer Sintered Metal Mesh vs. Multilayer Spot-Welded Metal Filter Screen: Comprehensive Analysis

1. Manufacturing Process Comparison

• Multilayer Sintered Metal Mesh
  Constructed by stacking multiple layers of stainless steel woven wire (e.g., 316L or 304), this material undergoes lamination and vacuum sintering. The interlocking mesh layers form a uniform pore structure, with metallurgical bonding at wire contact points ensuring high structural integrity.
  Key Advantages: Uniform pore distribution, exceptional mechanical strength (compressive resistance >10 MPa), and broad temperature tolerance (-200°C to 550°C).

• Multilayer Spot-Welded Metal Filter Screen
  Fabricated using resistance spot welding to fix multiple wire mesh layers, this design relies on physical welding points for structural stability. Without metallurgical bonding, the mesh layers are prone to deformation under stress, leading to reduced pore uniformity.
  Limitations: Suitable for low-pressure environments, narrower temperature range (≤300°C), and inconsistent filtration precision.

2. Filtration Performance & Stability

• Precision & Consistency

  • Sintered Mesh: Surface filtration mechanism with precision ranging from 2-300 μm. Bubble point tests confirm consistent pore size distribution.

  • Spot-Welded Screen: Precision depends on overlapping mesh layers, which may degrade due to welding-induced deformation.

• Anti-Clogging & Cleanability

  • Sintered Mesh: Supports high-pressure backflushing (>1 MPa) and features a smooth surface to minimize particle retention, achieving >90% regeneration efficiency.

  • Spot-Welded Screen: Welding protrusions trap contaminants, increasing cleaning difficulty and pressure drop over repeated cycles.

3. Environmental Resistance & Durability

• Corrosion Resistance

  • Sintered Mesh: 316L material resists strong acids and alkalis (excluding hydrochloric acid and high-chloride environments), with minimal pressure drop growth in oil-containing suspensions.

  • Spot-Welded Screen: Welding points are vulnerable to corrosion, especially in acidic conditions, reducing lifespan by 30%-50%.

• High-Temperature Performance

  • Sintered Mesh: Maintains structural stability at 550°C, ideal for high-temperature applications like petrochemical catalyst filtration.

  • Spot-Welded Screen: Risks oxidation and structural loosening above 300°C.

4. Cost-Effectiveness & Applications

• Economic Analysis

  • Sintered Mesh: Higher initial cost but offers 5-10 years of service life, ideal for high-precision, high-pressure systems (e.g., aerospace fuel filtration).

  • Spot-Welded Screen: Lower initial cost, suitable for short-term or low-pressure scenarios (e.g., water pretreatment, ventilation dust removal).

• Typical Applications

  • Sintered Mesh: Petrochemical catalyst recovery, pharmaceutical sterile processing, polymer melt filtration.

  • Spot-Welded Screen: HVAC systems, food-grade primary filtration, gas distribution.

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Anping Duozhuang Metal Wire Mesh Factory. delivers high-performance sintered and welded metal mesh products tailored to industrial needs. Contact us for customized filtration solutions:
Email: info@metalmeshfiltration.com