水轮机纳米WC抗磨蚀陶瓷涂层性能研究及应用

发布时间：2018-07-07 08:35

  本文选题：超音速热喷涂 + 纳米WC陶瓷涂层　； 参考：《水力发电》2017年08期

【摘要】：解决水轮机过流部件的磨蚀问题是高泥沙含量河流建设水电站的重要课题。采用超音速火焰热喷涂技术与纳米改性技术相结合,在水轮机过流部件基材上制备纳米WC抗磨蚀陶瓷涂层,通过对磨、电化学、冲蚀等试验,检验该涂层性能。结果表明:该纳米WC陶瓷涂层具有远高于基材的显微硬度、耐磨性能以及耐冲蚀性能,与基材之间形成高强度的结合。通过机器人模拟耦合技术实现良好的曲面编程,确保涂层性能的稳定。将其应用到新疆卡拉贝利水电站等高泥沙河流电站的机组过流部件表面,具有显著的抗泥沙磨蚀效果。
[Abstract]:It is an important task to solve the problem of erosion of hydraulic turbine overflow components in construction of hydropower stations with high sediment content rivers. By using supersonic flame thermal spraying technology and nano-modification technology, nano-WC antiwear ceramic coatings were prepared on the substrates of hydraulic turbine overflowing parts. The properties of the coatings were tested by abrasion, electrochemical and erosion tests. The results showed that the nano-WC ceramic coating had much higher microhardness, wear resistance and erosion resistance than the substrate, and formed a high strength bond with the substrate. Good surface programming is realized by robot simulation and coupling technology to ensure the stability of coating performance. It is applied to the surface of the unit flow parts in the equal-height silt river power station of Karabel Hydropower Station, Xinjiang, and has a remarkable anti-sediment erosion effect.
【作者单位】： 新疆卡拉贝利水利枢纽工程建设管理局;水利部杭州机械设计研究所;水利部产品质量标准研究所;浙江省水利水电装备表面工程技术研究重点实验室;
【基金】：浙江省科技计划项目(2014C31156);浙江省科技计划项目(2016C3791) 水利部综合事业局拔尖人才专项(2015132-4)
【分类号】：TV734.1
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本文编号：2104399