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Spray coating of water pump impeller corrosion resistant layer


Fan impeller corrosion resistance, spraying with surface thermal spraying and plasma spraying. Spraying materials are nickel and nickel alloy wire, powder, stainless steel wire, powder and so on. Nickel and nickel alloy spraying layer on hydrogen sulfate, phosphoric acid, acetic acid, hydrofluoric acid, hydrogen cyanide ferrous sulfate solution and dry gas, good corrosion resistance, but of hydrochloric acid, nitric acid, acetic acid, potassium sulfite medium, the corrosion resistance is not good.
Austenitic stainless steel in stainless steel for thermal spraying more, such as 1Cr18Ni9Ti, has good technology, in most oxidizing media and some reducing medium has good corrosion resistance. 1Cr18Ni9Ti is sprayed on the impeller surface of fan, and the result is good.
Fan impeller corrosion resistance there are other ways, automobile impeller, such as rubber, anti-corrosion coating, epoxy resin coating, etc.. The centrifugal fan impeller is made of Chesterton's 897 surface composite material, and some corrosion resistance tests are carried out, and the results are good. Fan impeller wear and corrosion prevention methods are more, the fan operating system, working conditions and the impeller manufacturing process of different restrictions, fan impeller wear-resistant and anti-corrosion methods are also different enterprises.

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