Jul. 07, 2025
The SMF series of filtration products provides the ability to achieve high filtration efficiencies from a combination of depth and tortuosity, while at the same time providing exceptional dirt holding capacity and flow characteristics.
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Filter efficiency is achieved by the precise selection of fiber diameters and basis weight. The medium’s matrix is constructed to control the pore diameter throughout its thickness. This allows us to achieve a graded pore structure that captures the desired larger particles on the outer layers while resulting in a higher dirt holding capacity and subsequent longer on-stream life. The media can also be configured as a surface filter to trap particles on the outer layer if backflush or backpulse regeneration applications are desired.
Diffusion Bonded / SinterPore™ Sintered Metal Fiber products from Porous Metal Filters are used in many industries including Bulk and Powder Handling, Chromatography, Filtration Industry, Gasification, and Plant Oil Extraction.
Diffusion Bonded / SinterPore™ Sintered Metal Fiber Media Designation SMF-3 SMF-5 SMF-10 SMF-15 SMF-20 SMF-25 SMF-30 SMF-40 SMF-60 Filtration Rating (μm) 3 5 10 15 20 25 30 40 60 Porosity % (+/- 5%) 65 78 77 78 81 79 90 77 87 Thickness (+/- 0.003”)Custom media, media alloys, fitting configurations, gasket materials and lengths available upon request
Coil Sintering is a process that utilizes time, temperature, and atmosphere to secure or stick intersections of the wire mesh. The mesh can be calandered prior to heat treating to aid in bonding. The process produces a stable, secure mesh that is ideal for deep drawing and or reducing the risk of loose wire’s loose. This product is only available in single layer options.
Stainless Steel Sintered Wire Mesh is a filtering cloth made by pressing multi-layer woven wire cloth, then sintered together in a vacuum furnace. This kind of filtering cloth is much better than common metal woven wire mesh with good strength, hardness and good positioning of opening. Its comprehensive property is superior to sintered metal powder and porcelain. The major characteristics are: excellent strength, no inner support is required for making filter elements, no material, easily repeated cleaning, long lifespan and good anti-corrosion.
Fine woven wire filter mesh provides micron-rated pore size but it is too thin and can be damaged. The best solution is to laminate the fine mesh to a coarser mesh supportive layer to provide increased strength and thickness. The common sintered wire mesh laminates are 5-layer or 6-layer, which is extensively used in filtration.
DWT produces a wide range of filter elements utilizing sintered wire cloth. Sintered Wire Mesh elements have many advantages over standard filter elements.
Most common stainless alloy used in wire weaving. Excellent corrosion properties and can withstand temperatures of Degrees F.
Similar properties as 304ss but lower carbon content to permit better welding.
Similar properties to 304ss but is stabilized by the addition of Molybdenum for increased resistance to chemical corrosion.
Similar properties as 316ss but lower carbon content to permit better welding.
Hight resistance to corrosion and rust for sea water applications.
Used in applications where high corrosion properties are required. Some applications could include several chemicals, caustics, and certain organic acids.
One of the most widely used alloys for high corrosion resistance. Used in many food and chemical processes. Monel is a registered trade mark for International Nickel Co INCO.
All of our Sintered Metal Filters are available in a wide range of micron ratings and alloys. In almost all cases, sintered metal filters can be cleaned multiple times. Contact us today for a detailed quote or if you have any questions about our diffusion bonded sintered wire cloth capabilities.
Porous Metal Filters is ISO Certified, and all our products are manufactured to the highest quality standards. Our staff is available to help you design the wire filtration product that will meet your design requirements and budget. Contact us today for more information about our products.
2-page flyer with features and benefits, applications, and specifications (PDF)
2-page flyer with features and benefits, applications, and specifications (PDF)
2-page flyer with features and benefits, applications, and specifications (PDF)
4-page brochure with features and benefits, applications, and specifications (PDF)
2-page flyer with features and benefits, applications, and specifications (PDF)
2-page flyer with features and benefits, applications, and specifications (PDF)
2-page flyer with features and benefits, applications, and specifications (PDF)
2-page flyer with features and benefits, applications, and specifications (PDF)
We invite you to explore and discover how PMF can transform your filtration and separation challenges into opportunities for growth and success. Join us on this exciting journey as we reshape industries, one innovative filter at a time. Together, let's unlock the true potential of porous metal filtration. Give us a call, stop by for a free tour of the facility, or fill out our contact form and we'll gladly assist you.
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In a nutshell, the robust and permeable architecture of sintered metal filters elevates them as superior for filtration in contemporary times. These metal constructs boast impressive resilience to elevated temperatures, immense pressure, and corrosive environments, facilitating filtration in more demanding settings. They adeptly segregate and purge unwanted contaminants or assist in procuring gases or liquids of heightened purity for your ventures. Click here, and you will find the Top Sintered Metal Filter Manufacturers.
It’s plausible that the term ‘sintered metal’ doesn’t frequently punctuate your everyday conversations.
Filtration and Separation Dispersion
Throttling and Dampening Equalizing
Yet, in an array of industrial realms, the utilization of sintered metal is escalating. This material is gradually emerging as a pivotal element in certain manufacturing spheres.
This domain pertains to a specialized segment of the powder metallurgy sphere. Encapsulation involves transmuting 316L stainless steel powder into requisite shapes and functionalities through a mold, followed by an elevated temperature sintering process.
Delving into the initial phase, sintering, one might inquire about its essence. Sintering embodies the technique of compressing and sculpting a solid mass from a material using thermal energy or pressure yet eschewing the liquefaction phase. As delineated by Wikipedia, this method is integral to the fabrication processes employed across various substances, including metals, ceramics, plastics, and more.
Loose powder is filled into metal dies that are magnetically vibrated. The powder and die are loosely sintered at a sintering temperature in the furnace.
As expounded by Wikipedia, many materials are amenable to sintering, each yielding sintered products with distinct utilitarian aspects. Our discourse now shifts to a more detailed exploration of sintered metals.
The history and development of sintering and the use of sintered products, particularly in filtration technology, is a fascinating journey that intersects with various industrial advancements.
Sintering Process and Its Industrial Use:
Sintering, a method of creating solid materials from powders by applying heat or pressure, has ancient origins in pottery and brick-making. However, its industrial application, especially in metallurgy, expanded significantly during the 19th and 20th centuries.
Development of Sintered Metal Filters:
The use of sintered metal specifically for filtration gained prominence in the latter half of the 20th century. A key milestone was the introduction of HyPulse® filtration technology in , showcasing sintered metal filters‘ effectiveness in industrial applications, such as filtering slurry oil in carbon fiber production.
Adoption in the Refinery Industry:
In China, from the late s, refineries started adopting sintered metal filters to remove catalyst fines in slurry oil solutions. These filters proved essential in resid fluid catalytic cracking (RFCC) systems, efficiently handling high-capacity and demanding filtration tasks.
Modern Applications:
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Today, sintered metal filters are widely used across various industries for filtering gases and liquids. Their durability and precision make them valuable in pharmaceuticals, chemical processing, and food and beverage production.
While sintering is ancient, its application in modern industrial filtration, mainly using sintered metal, is a recent development that has become crucial in many industrial processes since the late 20th century.
Breather-Vents Sensor-Protection
A sintered metal filter is crafted through a meticulous process where homogeneously sized metal powder granules are sculpted using a stamping technique, followed by a high-temperature sintering procedure. This specialized form of metallurgy sintering employs powdery aggregates of various metals and alloys shaped post-stamping.
This metallurgical transformation unfolds through diffusion in high-temperature kilns, remaining below the melting threshold of the metals involved. The spectrum of metals and alloys typically harnessed in contemporary applications spans from aluminum and copper to nickel, bronze, stainless steel, and titanium.
Porous metal powder material molding Die extrusion molding
Several techniques are employed to shape the metal powder into the desired form, including pulverization, atomization, and chemical disintegration.
Your explanation of sintering and the steps in manufacturing sintered metal filters is comprehensive. Let’s break it down for clarity:
Sintering is a process in which metal powder is bonded under high temperatures, along with other methods, to form a solid structure. This process is beneficial because it allows for precise control over the pore size and distribution within the material. This control is crucial for applications like filtration, where the size and uniformity of pores determine the filter’s effectiveness.
High-temperature sintered metal powder materials
Control Over Pore Size and Distribution: As you mentioned, sintering allows for the control of pore distance, which is essential for creating effective filters.
Maintains Metal Properties: Sintering does not significantly alter the physical properties of the metal, maintaining its inherent strength and durability.
Versatility in Material Selection: Different metals or alloys can be used, providing flexibility in the properties of the final product.
Robust Filtration Performance: Sintered metal filters are known for their strength and durability, making them suitable for various demanding applications.
Continuous vacuum furnace Three stages of solid-state sintering
Metal Powder High-Pressure Molding
This detailed breakdown should help us understand the sintering process and its application in manufacturing sintered metal filters.
Are you pondering the rationale behind employing metal for crafting filters? The elucidation lies in a multifaceted tapestry of reasons, with fiscal considerations reigning supreme.
Why Fiscal Considerations?
Indeed, sintered metal boasts a robust architecture, offering the boon of multiple reutilizations post-cleansing.
Moreover, diverse metallic elements possess steadfast physical and chemical attributes, rendering them resilient to deterioration.
Hence, the escalating adoption of Sintered Filters across various industrial sectors is observable.
Amidst the relentless advancement of powder metallurgy techniques, a burgeoning array of material selections for sintered metal filters has emerged. These choices extend beyond traditional options, accommodating specific demands for elevated thermal and pressure thresholds and enhanced corrosion resilience. Predominant metallic substances include:
The horizon promises an expanding utilization of diverse metals in forthcoming applications.
Most metals have natural resilience against corrosive forces, including sulfides, hydrides, and oxidative processes.
Tailoring the porosity of the cartridge to the fluid’s characteristics enables optimal filtration, ensuring the liquid remains untainted. Moreover, the non-corrosive nature of the filter precludes the introduction of impurities into the fluid through reactive processes.
The production phase generates intense heat, yet these metals possess physical attributes that robustly absorb significant thermal shocks. This quality allows for their use across diverse thermal conditions, ensuring efficient fluid filtration irrespective of the application’s heat levels.
Sintered metal filters are adept at sustaining fluid pressure within your system, guaranteeing peak operational efficiency. Conversely, even a minor pressure fluctuation could be detrimental to your system.
These filters are exceptionally capable in environments subject to high temperatures and pressures, maintaining their integrity and functionality. Their use in chemical reaction processes and gas treatment facilities exemplifies their superior filtration capabilities under demanding conditions.
The strength and fracture resistance of sintered metal filters are noteworthy. The metallurgical bonding during manufacturing occurs significantly below melting points, resulting in a robust product capable of enduring harsh conditions. For instance, they are ideal for friction applications, with no risk of breakage.
The precise tolerances of these filters mean they can perform filtration tasks without chemical interaction. Post-filtration, the sintered metal filter retains its physical characteristics, though it’s crucial to select a metal that remains inert in the presence of the specific fluid being filtered.
Sintered cartridges offer a plethora of geometric configurations. This flexibility is achieved during manufacturing, where the powder is molded into the desired shape. The mold dictates the filter’s design, allowing customization to meet specific requirements. Whether the need is for a miniature filter or one with a unique design, the mold can be adjusted accordingly during production.
The enigma often associated with the operational ethos of sintered metal filters is, in reality, more labyrinthine than presumed. This revelation might either startle you or seem predictable after my elucidation.
Sintered metal filters, in their essence, are quintessential in the realm of filtration. The ensnarement of impurities transpires at the fluid’s interface; as the liquid meanders through the metallic sieve, the more substantial particulates and contaminants are sequestered on one flank of the cartridge. However, in electing an apt filtration magnitude for your liquid, it’s imperative to ascertain its competency in sieving out the necessitated elements.
A comprehensive evaluation of several key factors is essential in addressing hydraulic resistance. These include:
Capability for Contaminant Retention Sintered FiltersReversal Flushing
To reach the desired end conditions, it’s necessary to concentrate on the accumulation of contaminants to a point where there’s a notable reduction in fluid pressure. This decrease continues until the maximum allowable drop, given the fluid’s viscosity and flow rate requirements.
Another critical aspect is the reverse cleaning of the filter. This process involves pressurizing the gas toward the screen and swiftly activating the backwash discharge. This action creates a significant reverse pressure difference, effectively dislodging contaminants from the filter surface. The reverse flow of clean fluid through the filter element removes these contaminants, expelling them from the filter system.
A steady increase in hydraulic resistance rate indicates a consistent and uniform distribution of contaminant sizes. For optimal performance, it’s vital to maintain a stable hydraulic resistance in the filter element. Fluctuations in the fluid’s temperature can affect its viscosity, thereby impacting the hydraulic resistance across the filter element and compromising the filtration effectiveness.
Therefore, maintaining the operational temperature of the filter during the filtration process is crucial. This includes monitoring the temperature of the fluid and keeping the pressure. Adhering to the correct reverse flushing procedure when cleaning the filter ensures its longevity and effectiveness.
In sintered metal filters, myriad inquiries burgeon, chiefly their practical applications. Post the intricate fabrication process. One ponders the destinations of these sintered metal filter cartridges.
Indeed, their presence is ubiquitous across diverse sectors.
Enumerating their prevalent uses:
In essence, the applications of sintered metal filters are as varied as they are vital, permeating numerous industries with their unique properties.
Saifilter can supply a range of sintered metal filters, including:
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