High-quality sintered porous metal filters 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) |
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Production Process of Sintered Porous Metal Filter
1. Powder Preparation
- High purity metal powders (particle size range can be controlled) are selected and prepared by atomization or reduction process.
2. Molding
- Cold isostatic pressing, molding or 3D printing technology is used to press the powder into predefined shapes.
3. Sintering
- 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.
4. Processing
- Cutting, welding, polishing to ensure dimensional accuracy and surface finish.
5. Testing
- 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.
6. Cleaning and packaging
- Ultrasonic cleaning to remove residual particles, vacuum sealed to prevent oxidation.
Advantages of Sintered Porous Metal Filter
- High precision and stability: uniform pore size distribution, filtration efficiency of 99.9% or more, no fiber shedding in long-term use.
- Extreme environmental resistance: suitable for high temperature (800°C), high pressure (10MPa), strong acid/alkali (pH 1-14) environment.
- Long life and low cost: can be repeatedly cleaned and regenerated, life expectancy is 5-10 times that of traditional cartridges.
- High strength design: compressive strength ≥20MPa, suitable for high vibration and shock working conditions.
- Environmental compatibility: no secondary pollution, in line with FDA (food), GMP (pharmaceutical) and other industry certification.
Application of Sintered Porous Metal Filter
Petrochemical: Catalyst recovery, oil filtration, acid gas purification
Biological: Pharmaceutical liquid sterilization (0.22 μm), fermentation liquid clarification, cell retention
Food & Beverage: Wine/juice filtration, dairy sterilization, edible oil refining
Environmental Water Treatment: Heavy metal adsorption for industrial wastewater, desalination pretreatment, membrane module protection
Energy: Nuclear Power Plant Cooling Water Filtration, Fuel Cell Gas Diffusion Layer, Lithium Battery Electrolyte Purification | Aerospace | Hydraulic Oil Filtration
Aerospace: Hydraulic Oil Filtration, Engine Fuel Purification Medical | Blood Dialysis
Medical: 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.