Application Scope and Performance Evaluation Methods for Stainless Steel Folded Filter Elements
Stainless steel pleated filter elements are porous, depth‑filtration materials produced by sintering stainless steel fibers at high temperatures. Filter elements with a corrugated structure made from these materials feature high porosity, a large filtration surface area, strong resistance to fouling, and excellent reusability. Stainless steel pleated filter elements are also woven from stainless steel wire; their corrugated design offers superior mechanical strength, minimal fiber shedding, easy cleaning, high‑temperature resistance, and cost‑effective operation.
Scope of application:
It is primarily used for filtering media such as polymeric polymers, pharmaceuticals, hydraulic oils, water treatment fluids, and high-temperature gases.
When evaluating the performance of a stainless steel pleated filter element, key considerations include the bubble point, differential pressure–flow characteristics, filtration accuracy, contaminant-holding capacity, and mechanical strength. The bubble-point pressure should be no less than 90% of the material’s specified bubble-point pressure. Regarding differential pressure–flow characteristics, at an oil temperature of approximately 30°C and under a rated differential pressure of 0.15 MPa, with standard air as the test fluid, the allowable deviation in the rated differential pressure should be within 200 Pa—this is one of the most critical performance criteria for stainless steel pleated filter elements.
Stainless steel sintered felt pleated filter element;
Stainless steel fiber sintered felt is a porous, depth‑filtration material produced by sintering stainless steel fibers at high temperatures. Corrugated filter elements are characterized by high porosity, large filtration surface area, strong resistance to fouling, and excellent regenerability.
The filtration layer is made of sintered stainless steel fiber felt. The primary material of this sintered felt consists of slender fibers with diameters ranging from 1.5 to 80 micrometers. These metal fibers are uniformly laid down to form a three-dimensional nonwoven network; after high-temperature sintering, the fibers are fixed at their junctions, resulting in a filtration material with excellent structural integrity.
Fiber sintered felt filter media feature a low filtration rating—meaning high precision—and excellent permeability. Filter elements made from fiber sintered felt are widely used in domestic coal‑chemical filtration equipment, such as that employed in the production of methanol, acetic acid, synthetic ammonia, and other chemical processes.
Technical features
Precision: 2–100 microns, rated for liquid filtration.
Rated gas for 0.1–10 µm filters
Materials: SUS316, SUS316L, Hastelloy, Monel alloy, duplex stainless steel.
Diameters: 35, 50, 65, 70, 80, 100, 140, and custom non-standard sizes.
Length: L100–1500 mm, etc.
Interfaces: standard types 215, 220, 222, and 226, as well as threaded, flanged, flat‑head, and planar configurations.
Composite structures: single mesh, mesh combination, SUS stamped sheet plus single mesh or mesh combination, SUS stamped sheet plus sintered mesh.
It features high porosity and excellent air permeability, meeting the demands for high-temperature resistance, corrosion resistance, and high precision. With outstanding mechanical strength and a pressure drop of 6.9 MPa, it is well suited for filtering molten polymers and exhibits superior resistance to acid–base corrosion as well as exceptional high‑temperature stability (0–1000°C). Single‑layer and multi‑layer composite fiber sintered felts can be selected to match specific process requirements.
Typical Applications
Clarification and filtration of various liquids in the pharmaceutical, biotechnology, and beverage industries.
Filtration and dust removal of various high-temperature, corrosive gases in the petroleum, chemical, metallurgical, and other industries.
Filtration and purification of polymer melts in the chemical fiber, film, polyester, cotton fiber, and other industries.
Filtration of hydraulic and lubricating oils in the mechanical, marine, electrical, electronic, aerospace, and other industries.
Related Information
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When purchasing a vacuum oil filter, the first step is to understand the functions of the different types available, and then choose the one that best suits your needs.
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