Abstract：Research purposes: A plateau railway recently started has high relative humidity, which puts forward higher requirements for the anti-corrosion of OCS parts due to the influence of cargo dust in the tunnel and poor equipment maintenance conditions in plateau areas. This paper studies and tests the corrosion influencing factors, adaptability of common anti-corrosion measures and OCS and zinc-nickel infiltration technology of OCS parts, so as to provide reference for the anti-corrosion design of OCS parts in high humidity area of plateau. Research conclusions: (1) The anti-corrosion performance of OCS parts is greatly affected by relative humidity, air temperature, atmospheric medium and other factors. OCS parts in the tunnel are more likely to be corroded due to the joint influence of atmosphere, groundwater and soil. (2) At present, steel OCS parts are treated with hot-dip galvanizing for corrosion protection. A few special work sites have studied and adopted measures such as increasing composite coating, Dacromet corrosion protection. However, affected by the working environment and characteristics of OCS parts, it has great limitations. (3) The anti-corrosion technology of zinc-nickel infiltration coating has the characteristics of high corrosion resistance and high wear resistance. Compared with traditional hot-dip galvanized parts, the anti-corrosion life can be increased by 147%. (4) Relevant technologies and their application in railways in plateau high humidity areas can greatly improve the anti-corrosion performance of OCS parts.
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2022, Vol. 39 
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