Sintered Powder Filter Elements
High-Precision Sintered Powder Filter Elements | Porous Metal Filters for Industrial Filtration
Our Sintered Powder Filter Elements represent the pinnacle of porous metal technology. Manufactured by sintering high-quality metallic powders (such as 316L Stainless Steel, Bronze, or Titanium) in a vacuum furnace, these elements offer a rigid, interconnected pore structure. Unlike traditional mesh or fiber filters, powder-sintered media provide superior depth filtration, exceptional mechanical strength, and precise micron ratings for the most demanding industrial environments.
Technical Specifications & Parameters
1. Premium Material Selection
We utilize specialized powders to ensure chemical compatibility and thermal stability:
· 316L Stainless Steel: The industry standard for high-temperature (up to 600°C) and highly corrosive environments.
· Sintered Bronze (CuSn10): Ideal for pneumatic filtration, noise reduction (mufflers), and general hydraulic applications.
· Titanium & Inconel: Reserved for ultra-corrosive chemicals, strong acids, and aerospace-grade requirements.
· Hastelloy & Monel: Specialized alloys for chemical processing plants dealing with chlorides and high-stress salt environments.
Parameter | Specification / Value |
Standard Shapes | Tubes, Discs, Plates, Cones, Custom Manifolds |
Max. Operating Temperature | 600°C (Oxidizing Atmosphere) / 900°C (Reducing) |
Max. Differential Pressure ($\Delta P$) | Up to 3.0 MPa (Depending on wall thickness) |
Coefficient of Thermal Expansion | $17.5 \times 10^{-6} / \text{°C}$ |
Corrosion Resistance | Excellent in Organic Acids, High-Temp Steam, Alkalis |
Cleaning Methods | Ultrasonic, Back-pulse, Chemical Solvent, High-Temp Burn-off |
2. Micron Ratings & Filtration Efficiency
Our proprietary sintering process ensures a narrow pore size distribution, allowing for consistent particle retention.
· Filtration Grade: Available from 0.2 μm to 100 μm.
· Permeability: High porosity (ranging from 30% to 50%) ensures maximum flow rates with minimal pressured drop.
Filtration Grade (μm) | Nominal Pore Size (μm) | Relative Permeability (10−12m2) | Open Porosity (%) | Max. Bubble Point Pressure (Pa) |
0.2 | 0.5 – 1.0 | 0.05 | 30 – 35 | ≥12,000 |
0.5 | 1.0 – 2.0 | 0.15 | 30 – 38 | ≥8,500 |
1.0 | 2.5 – 5.0 | 0.8 | 35 – 40 | ≥5,200 |
5.0 | 10 – 15 | 4.5 | 35 – 42 | ≥2,800 |
10 | 20 – 30 | 12.0 | 38 – 45 | ≥1,600 |
20 | 40 – 50 | 45.0 | 40 – 48 | ≥1,100 |
50 | 80 – 100 | 180.0 | 45 – 50 | ≥600 |
100 | 150 – 200 | 450.0 | 45 – 55 | ≥350 |
3. Bubble Point & Pore Integrity
Each filter element undergoes rigorous Bubble Point Testing (per ISO 4003).
· Uniform Porosity: Ensures no "media migration" or bypass, protecting sensitive downstream equipment.
· Integrity: The metallurgical bond created during sintering prevents pore deformation even under extreme differential pressure.
Key Features & Advantages
· Shape Stability: Self-supporting structure that eliminates the need for internal cages or external supports.
· Excellent Backwashability: Can be cleaned via ultrasonic baths, chemical solvents, or high-pressure backpulsing, significantly extending the Product Lifecycle.
· High Thermal Shock Resistance: Capable of withstanding rapid temperature fluctuations without cracking or losing structural integrity.
· Environmentally Friendly: A sustainable, reusable alternative to disposable plastic or fiber cartridges.
Configurations & Custom Geometry
· We offer extensive OEM/ODM capabilities to fit your specific housing requirements:
· Shapes: Cylindrical Cartridges, Sintered Discs, Porous Plates, Conical Filters, and Seamless Tubes.
· End Fittings: NPT/BSP Threaded, DOE (Double Open End), 222/226 Code 7, and customized Flanges.
· Dimensions: Diameters from 2 mm to 300 mm; Lengths up to 1500 mm (seamless or welded).
Core Industrial Applications
· Chemical & Petrochemical: Catalyst recovery, fluidization, and aggressive solvent filtration.
· Pharmaceutical: Sterile air venting, steam filtration, and carbon removal.
· Food & Beverage: CO2 carbonation, oxygen stripping, and steam-in-place (SIP) filtration.
· Aerospace & Defense: Hydraulic fluid purification and fuel system protection.
· Water Treatment: Ozone sparging and micro-bubble aeration systems.
