High-Quality Sintered Porous Metal Filters from China Suppliers | Reliable 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.
Quality assurance through rigorous testing procedures:
- 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
Customized service
Certification standards
Frequently Asked Questions (FAQ)
Q1: What materials are available for sintered porous metal filters?
We offer filters made from Stainless Steel (316L, 304), Titanium alloys, Nickel, Monel alloy, and Hastelloy to suit various chemical compatibility needs.
Q2: What is the operating temperature range of these filters?
Sintered porous metal filters can operate in extreme environments ranging from -200°C to +800°C, depending on the specific metal material selected.
Q3: How are sintered metal filters cleaned?
They can be repeatedly regenerated and cleaned using backwashing, ultrasonic cleaning, or chemical treatments such as acid/alkali immersion.
Q4: What filtration efficiency can I expect?
These filters offer high-precision filtration with an efficiency rate of 99.9% or more for target size particles, with pore size ranges from 0.1 to 100 μm.
Q5: Can you customize the size and design of the filters?
Yes, we support customized non-standard sizes, custom shaped structures, and multi-layer composite designs with gradient pore sizes to fit your exact specifications.
Q6: What industry standards do your filters comply with?
Our manufacturing and products comply with major international quality standards, and we can provide ISO 9001, ASME BPE, and RoHS certification reports.