Hydac is the brand in the hydraulic system brand. SINFT cross replece filter element and puts high demands on the Hydac replacement filter element.
Technical requirements for replacement Hydac hydraulic filter element
Technical requirements Replacement filter element are specified in terms of materials, surface treatment, marking, design and construction, reliability, maintainability, performance, environmental requirements, and more. Among them, there are 11 requirements for filter element in performance: structural integrity, maximum pore size, initial filtration ratio, average filtration ratio, dirt holding capacity, compatibility, cold start, flow fatigue cycle, medium migration, axial strength, pressure Flat strength.
Quality requirements of the replacement Hydac hydraulic filter element
SINFT has 28 requirements for replacement Hydac hydraulic filter elements: appearance, air tightness, opening pressure, closing pressure, pressure drop and life, self-sealing device leakage and life, differential pressure indicator indicating differential pressure, operating temperature, life, Pressure pulse, mechanical shock, filter low pressure sealing, high pressure sealing, pressure drop, pollution degree, high temperature pressure shock, ultimate pressure, net weight, environmental requirements are high temperature, low temperature, temperature shock, vibration, shock, damp heat, salt spray, Mold.
Environmental impact on the filter element
SINFT pointed out that the improvement of filter element should focus on the influence of environment on the filter element material, and whether the filter element material is embrittled, expanded, softened and decomposed. The test temperature specified in this test shall be 15 ℃ higher than the maximum working temperature specified by the filter element manufacturer, but pay attention to safety and shall not exceed the flash point of the working liquid. After 72 hours of test, the filter element must pass the crack resistance test of iso2941 before it is qualified