Study on High Anticorrosion and Wear-resistant Ni-W Coating Sucker Rod
Sucker rod is a key component of the pumping unit of oil drilling equipment.Improving its anti-corrosion and wear resistance and prolonging its service life are of great significance to reducing the drilling cost.In this paper,nickel-tungsten coating was prepared by electrode position on the surface of rod.The composition,microstructure,surface morphology,hardness,adhesion,corrosion resistance in neutral salt spray and corrosion resistance in simulated environment with high H2S and CO2 content were analyzed.The results show that nickel-tungsten coating has bright,dense surface,good bonding force and high hardness,and excellent corrosion resistance in neutral salt spray and high temperature and high sulfur medium,which can significantly extend the service life and reduce the comprehensive cost.
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