Product Overview
The principle of the stainless steel powder sintered carbonation stone process is as follows:
Raw Material Preparation:
Stainless steel powder is prepared using water atomization or gas atomization, with irregular particle shapes and a loose bulk density of 2.5-3.2 g/cm³.
Forming Process:
- Press-and-Sinter Method: The powder is pressed into shape under a pressure of 207 MPa and sintered in a reducing atmosphere (such as hydrogen protection) to form a porous structure.
- Loose Powder Sintering Method: The powder is directly filled into a mold and sintered without pressure, achieving a porosity of 40%-60%. Adding a pore-forming agent (such as methyl cellulose) can increase the porosity to 70%-90%.
Densification Control:
During the mid-to-late stages of sintering, pore closure happens through lattice diffusion or grain boundary diffusion. The heating rate and holding time are adjusted to optimize the density.
Performance Characteristics:
Porosity influences filtration accuracy, such as at 0.5 μm. A smooth surface also aids in backwashing and regeneration.
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Technical Specifications
| Parameter | Specification |
|---|---|
| Material | 316L Stainless Steel (UNS S31603) |
| Standard Diameters | 2mm to 500mm (Custom sizes available) |
| Standard Thicknesses | 1mm to 100mm (Custom thicknesses available) |
| Filtration Ratings | 0.5, 1, 2, 5, 10, 20, 40, 60, 100 microns |
| Maximum Operating Temperature | 900℃ (1650℉) |
| Maximum Differential Pressure | 40 bar (580 psi) depending on dimensions |
| Porosity | 30% to 45% (Adjustable based on requirements) |
| Surface Finish | Standard or Electropolished |
| Certifications | ISO 9001, Material Certification, FDA Compliance |
Customization Available
Most of our products are custom-manufactured based on customer specifications. We can produce filter discs according to your exact drawings, dimensions, and performance requirements. Our engineering team is available to assist with design optimization for your specific application.
Versatile Industrial Applications
Stainless steel powder sintered carbonation stones are widely used in food and beverage, pharmaceuticals, chemicals, petrochemicals, and wastewater treatment. They handle applications like liquid and gas filtration, cryogenic gas processing, and corrosive media separation.
With high filtration capacity, chemical and temperature resistance, and easy maintenance, they are ideal for reliable and efficient industrial filtration.
