Customized Sintered Metal Filters From Lvyuan
Your leading manufacturer for sintered metal filter
The sintered metal filter manufactured by lvyuan is based on the core of high precision and extreme environment resistance, using stainless steel (304/316L), titanium alloy, nickel-based alloys and other metal powders as raw materials, forming hollow blanks through cold isostatic pressure molding (10-16MPa pressure) or mold-assisted, and then vacuum degassing (1.3×10-²Pa) and protective atmosphere sintering (stainless steel 1000-1400℃, titanium alloy 500-600℃) to achieve a dense pore structure, the porosity 28%-50% adjustable. Pa) and protective atmosphere sintering (1000-1400°C for stainless steel, 500-600°C for titanium alloy) to achieve a dense pore structure with an adjustable porosity of 28%-50%. Post-processing includes rapid cooling, mechanical finishing and surface polishing to ensure that the cartridge can withstand pressure of 20-200kg/cm² and the filtration precision covers 0.1-200μm.
The sintered metal filter cartridge is resistant to high temperature (400-900℃), strong corrosion (acid/alkali/seawater), supports ultrasonic cleaning or high temperature burning regeneration, and its life span is 3-5 times of the traditional cartridges, which is widely used in petrochemical catalysts. They are widely used in petrochemical catalyst recovery ), pharmaceutical aseptic filtration (titanium alloy 0.5μm precision), ultrapure water preparation (stainless steel sintered wire mesh), and high temperature flue gas de-dusting, etc., with high efficiency and environmental protection and economic advantages.
What is sintered metal filter?
1. By material type
- Metal sintered cartridges (stainless steel, copper, titanium alloys, etc.)
- Non-metallic sintered cartridges (e.g. PE, PTFE, etc., which need to be listed separately, but are not the focus of user questions)
2. Divided by function and structure
- Surface filtration type (such as sintered mesh cartridge)
- Depth filtration type (such as powder sintered cartridge, sintered felt cartridge)
What are the types of sintered metal filters?
1. Sintered stainless steel filter
- Material: 304/304L, 316/316L, etc.
- Performance: high temperature resistance (400 ℃), acid and alkali resistance, precision 5-100μm, high mechanical strength.
- Application: water treatment, petrochemical, food and beverage, dust control system.
2. Sintered bronze filter
- Material: tin bronze powder
- Performance: precision 3-100μm, resistance to rapid cooling and heating, corrosion resistance.
- Applications: acid / alkali media filtration, pneumatic equipment muffling
3. Sintered titanium filter
- Material: high purity titanium powder or titanium alloy (such as Ti-Ni, Ti-Al).
- Performance: high temperature (500-600 ℃), strong corrosion resistance, easy to regenerate
- Application: chemical corrosive media, high temperature gas filtration in nuclear power plants.
4. Special function filter element
- High-temperature metal film filter bag: 500℃ resistance, 0.1μm ultra-precision filtration (metallurgy/electric power high-temperature flue gas)
- Sintered felt filter element: gradient filtration (3-100μm), large dirt-holding capacity (environmental protection waste water treatment)
How is the production process for sintered metal filter?
The following is the production process of metal sintered metal filter cartridge, synthesizing the core steps and technical points of several process types (e.g. metal powder cartridge, composite cartridge, etc.):
First, raw material preparation and pretreatment
Metal powder: common materials include stainless steel (304/316L), copper, titanium alloy, nickel-based alloys, etc., according to the use of the filter element to choose the particle size range (20-300 mesh).
Second, molding
Mold filling
The mixture is filled into a high-temperature resistant mold , making sure that the compression blanks are separated by molybdenum flakes or aluminum oxide to prevent sintering adhesion.
Third, high-temperature sintering process
1. Sintering temperature control
Stainless steel cartridge: 1000-1400 ℃, copper cartridge: 800-900 ℃, titanium alloy cartridge up to 500-600 ℃.
Precise temperature control to avoid grain coarsening (too high temperature) or insufficient densification.
2. Atmosphere protection and insulation
Filled with argon or hydrogen to reduce oxidation.
Holding time is adjusted according to the cartridge size (1-10 hours) to ensure pore uniformity.
3. Multi-stage sintering
The composite cartridge needs to be sintered in several stages: first sinter the metal mesh layer, then sinter the metal powder layer to enhance the interlayer bonding force.
Fourth,Post-treatment and processing
1. Cooling process
Rapid cooling (e.g. water cooling or inert gas cooling) to maintain the stability of the phase structure, to avoid slow cooling leading to performance degradation.
2. Mechanical Processing
Turning, drilling to adjust the dimensional accuracy, or coiled tube welded into a round tube (inside-out structure).
3. Surface treatment
Polishing, coating (such as corrosion-resistant layer) to improve surface finish and functionality.
Fifth. Performance Testing
1. Key performance test
Porosity: 28%-50% (adjusted by powder particle size and sintering process).
Filtration precision: 0.1-100μm (copper cartridge up to 5-100μm, stainless steel cartridge 5-100μm).
Mechanical strength: pressure resistance test (e.g. 20-200 kg/cm²), high temperature stability verification.
2. Regeneration process
Backwashing, ultrasonic cleaning or high temperature burning (copper cartridges can be acid washed or burned with open flame) to remove clogging.
What are the features of our sintered metal filter?
Precision filtration capability
● Titanium cartridge supports 0.5μm ultra-pure water filtration (key demand of electronic semiconductor industry)
● High-temperature metal film filter bag realizes 0.1μm particle interception (metallurgical furnace flue gas dedusting)
Durability and Maintenance
● Stainless steel cartridges can withstand pressures from 20-200 kg/cm² (for hydraulic systems).
● Copper cartridge supports ultrasonic cleaning and regeneration (chemical production cost reduction).
Customized design
● Customized sizes: max. diameter 320 mm, length 1200 mm (e.g. Chih-Yeh SF series).
● Adaptation of interfaces: flat/threaded/double-open (for different installation requirements)
What is the application for sintered metal filer?
- Petrochemical: catalyst recovery (metal powder cartridges)
- Food & Pharmaceuticals: High hygiene standards (stainless steel/titanium cartridges).
- Environmental protection and energy: high temperature flue gas dust removal (high temperature metal film filter bag)
- Electronic semiconductor: ultra-pure media filtration (high-precision sintered mesh filter element)