Manufacturing Process for Paper/Glass Fiber Filtration Elements
These elements are primarily used for filtering fluids such as air and engine oil, representing the most widely applied category in the industrial sector.
Filter Media Pre-treatment: Raw materials-such as glass fiber filter paper or synthetic fiber filter cloth-are fed into the equipment; rollers press ventilation channels into the material to enhance subsequent fluid flow efficiency.
Pleating and Shaping: Parameters for pleat height and density are adjusted according to product precision requirements to perform automatic pleating; in some processes, hot-melt adhesive lines are applied to the filter media surface to secure the pleat shape.
Frame and Seal Molding: A supporting steel mesh is placed in the mold, and sealing materials (such as polyurethane) are injected; the pleated filter media is inserted, and a heat-pressing process causes the sealing material to expand, encapsulating both the media and the frame to form an integrated, sealed structure.
Post-processing and Testing: After cooling, excess material is trimmed away; the element undergoes sequential testing-including smoke testing for seal integrity, as well as scanning tests for filtration efficiency and initial pressure drop-and is cleaned and labeled upon meeting standards such as EN1822.
Manufacturing Process for Metal Melt Filtration Elements
These elements are designed for demanding operating conditions, such as chemical fiber spinning and high-temperature polymer processing, utilizing stainless steel and metal fibers as core raw materials.
Raw Material Selection: Raw materials-such as metal powders of specific mesh sizes or metal fiber felts-are selected based on the operating conditions' requirements for temperature resistance, pressure resistance, and filtration precision.
Forming and Sintering: After being pressed into shape using a mold, the element undergoes sintering in a high-temperature furnace with a protective atmosphere, bonding the particles or fibers to form a uniform, stable porous structure.
Performance Testing: Sequential tests-including precision calibration, pressure resistance testing, and corrosion resistance testing-are conducted to ensure that porosity and filtration precision meet operational requirements.
Cleaning and Dispatch: Specialized processes are used to remove residual internal impurities; the product is cleaned, packaged, and labeled with its specifications.
