Surface isolating layer of abrasion-resistant centrifugal pump overflowing part
A technology of flow-passing parts and isolation layers, which is applied to pump components, parts of pumping devices for elastic fluids, pumps, etc., can solve the problems of easy wear and aging, poor wear resistance, poor adhesion, etc., and achieve prolongation The effect of service life, increased anti-corrosion performance, increased formability and leveling
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[0013] An isolation layer on the surface of a flow-passing part of a wear-resistant centrifugal pump. The material of the flow-passing part is wear-resistant white cast iron. The isolation layer includes a transition layer on the surface of the flow-passing part and a wear-resistant layer outside the transition layer. The transition The thickness of the layer is 60 μm. The transition layer is made of boron, silicon, titanium and nickel-chromium-molybdenum alloy. The transition layer also includes inevitable carbon and other impurities. The transition layer is coated with metal mixed powder on the surface of the substrate by TIG welding. The mixed metal powder contains 4% boron, 2% silicon, 42% titanium, 5% nickel, 12% molybdenum, and the balance is chromium and unavoidable impurities by weight percentage;
[0014] The wear-resistant layer is a hot-melt plastic layer with a thickness of 1.2mm. The method is to heat the surface of the flow-passing part covered with the transition...
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