High-Quality Sintered Porous Metal Filters from China Suppliers and Factory for Precise Liquid/Gas Filtration
Parameters of Sintered Porous Metal Filter
| Parameter Category | Detailed Description |
|---|---|
| Material | Stainless steel (316L, 304), nickel, titanium alloy, monel alloy, hastelloy, etc |
| Pore size range | 0.1-100 μm (support customization) |
| Porosity | 30%-60% (affects the flow rate and filtration efficiency) |
| Thickness/Diameter | Thickness: 1-10 mm; Diameter: 10-300 mm (non-standard sizes can be customized) |
| Operating Temperature | -200°C to +800°C (material determines temperature limit) |
| Operating Pressure | ≤0.5 μmol/L |
| Working Pressure | ≤10 MPa (adjusted according to structural design) |
| Pressure strength | ≥20 MPa (excellent resistance to mechanical impact) |
| Filtration Efficiency | 99.9% or more (for the target size particles) |
| Cleaning method | Backwashing, ultrasonic cleaning, chemical cleaning (such as acid/alkali immersion) |
Production Process of Sintered Porous Metal Filter
High purity metal powders (particle size range can be controlled) are selected and prepared by atomization or reduction process.
Cold isostatic pressing, molding or 3D printing technology is used to press the powder into predefined shapes.
Performed in a protective atmosphere (e.g. hydrogen, argon) or in a vacuum furnace:
- Pre-sintering: low temperature stage (500-800°C) to remove the binder and initially form the structure.
- High-temperature sintering: close to 70-90% of the melting point of the material (e.g., stainless steel about 1200-1300°C), resulting in diffusion bonding between the particles and the formation of a porous structure.
Cutting, welding, polishing to ensure dimensional accuracy and surface finish.
Comprehensive inspection ensures quality:
- Gas tightness test: High pressure gas test for pore uniformity.
- Pore size analysis: bubble point method or mercury intrusion method to determine the pore size distribution.
- Strength test: compression and bending test to verify the mechanical properties.
Ultrasonic cleaning to remove residual particles, vacuum sealed to prevent oxidation.
Advantages of Sintered Porous Metal Filter
Uniform pore size distribution, filtration efficiency of 99.9% or more, no fiber shedding in long-term use.
Suitable for high temperature (800°C), high pressure (10MPa), strong acid/alkali (pH 1-14) environment.
Can be repeatedly cleaned and regenerated, life expectancy is 5-10 times that of traditional cartridges.
Compressive strength ≥20MPa, suitable for high vibration and shock working conditions.
No secondary pollution, in line with FDA (food), GMP (pharmaceutical) and other industry certification.
Application of Sintered Porous Metal Filter
Catalyst recovery, oil filtration, acid gas purification
Pharmaceutical liquid sterilization (0.22 μm), fermentation liquid clarification, cell retention
Wine/juice filtration, dairy sterilization, edible oil refining
Heavy metal adsorption for industrial wastewater, desalination pretreatment, membrane module protection
Nuclear Power Plant Cooling Water Filtration, Fuel Cell Gas Diffusion Layer, Lithium Battery Electrolyte Purification | Aerospace | Hydraulic Oil Filtration
Hydraulic Oil Filtration, Engine Fuel Purification Medical | Blood Dialysis
Hemodialysis cartridges, artificial organ materials (titanium alloys with excellent biocompatibility)
Customized service
Support non-standard size, shaped structure, multi-layer composite (gradient pore size) design.
Certification standards
ISO 9001, ASME BPE, RoHS and other certification reports are available.