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Hydraulic Oil and Lubricating Oil Filter Element Material Types Introduction
Hydraulic oil and lubricating oil filter elements are crucial components in engineering, and the types of filter materials used have a decisive impact on filtration efficiency and lifespan. In industrial and mechanical fields, common types of filter materials for hydraulic and lubricating oil include inert inorganic fibers, plant fibers, and metal fibers.
Inert inorganic fibers, such as glass fibers, are one of the common filter materials for hydraulic and lubricating oil filter elements. Products like Coralon and Athalon from SINFT utilize this type of filter material. The advantage of this material lies in its fine fiber diameter, which allows for more filtration pores per unit area of filter material, enhancing the efficiency and dirt-holding capacity of the filter. Glass fiber filter material features a gradient pore structure, with larger upstream pores and smaller downstream pores, effectively utilizing the thickness of the filter material to further increase dirt-holding capacity. Additionally, the inclusion of precisely controlled epoxy resin in the glass fiber strands effectively fixes the cross-linking points of the fibers, improving the stability and resistance to fluid flow, thereby maintaining pore size and flow stability.
Plant fibers, on the other hand, are typically used in paper filter materials and are mainly employed in air filtration and applications where filtration precision requirements are not stringent. Although the filtration precision of plant fibers is generally lower, they remain an economically effective choice for environments with less demanding filtration requirements.
Metal fibers are another common filter material type, often used in metal mesh filter elements. These filter elements are made using stainless steel wire strands and possess a certain level of reusability, allowing for multiple reuses through cleaning. However, due to physical and technical limitations, the filtration precision of metal mesh filter elements is usually limited to 50 microns or larger. Furthermore, the drawback of metal mesh filter elements is that they cannot accumulate contaminants in the middle of the filter, thus limiting their dirt-holding capacity.
In conclusion, different types of filter materials have their own advantages and disadvantages in hydraulic and lubricating oil filter elements, and the choice of suitable filter materials depends on specific application scenarios and filtration requirements. When selecting filter materials, factors such as filtration precision, dirt-holding capacity, durability, and cost-effectiveness need to be considered to ensure that the filter elements effectively protect mechanical equipment and prolong their service life.