张瑞珠,卢伟,严大考,黄荣浩,刘晓东.水轮机叶片表面聚氨酯弹性涂层的抗磨蚀性分析[J].表面技术,2014,43(1):11-15.
ZHANG Rui-zhu,LU Wei,YAN Da-kao,HUANG Rong-hao,LIU Xiao-dong.Abrasion Resistance Analysis of Spray Polyurethane Elastic Coating on Turbine Blades[J].Surface Technology,2014,43(1):11-15
水轮机叶片表面聚氨酯弹性涂层的抗磨蚀性分析
Abrasion Resistance Analysis of Spray Polyurethane Elastic Coating on Turbine Blades
投稿时间:2013-09-08  修订日期:2013-09-25
DOI:
中文关键词:  聚氨酯涂层  水轮机叶片  抗磨蚀  微相分离
英文关键词:polyurethane coating  turbine blade  anti-abrasion  micro phase separation
基金项目:河南省重点科技攻关项目(122102210241)
作者单位
张瑞珠 华北水利水电大学, 郑州 450011 
卢伟 华北水利水电大学, 郑州 450011 
严大考 华北水利水电大学, 郑州 450011 
黄荣浩 华北水利水电大学, 郑州 450011 
刘晓东 华北水利水电大学, 郑州 450011 
AuthorInstitution
ZHANG Rui-zhu North China University of Water Resources and Electric Power, Zhengzhou 450011, China 
LU Wei North China University of Water Resources and Electric Power, Zhengzhou 450011, China 
YAN Da-kao North China University of Water Resources and Electric Power, Zhengzhou 450011, China 
HUANG Rong-hao North China University of Water Resources and Electric Power, Zhengzhou 450011, China 
LIU Xiao-dong North China University of Water Resources and Electric Power, Zhengzhou 450011, China 
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中文摘要:
      目的 分析聚氨酯弹性涂层的抗磨蚀性机理,并研究其在水利工程表面防护中的应用。 方法对水轮机叶片的气蚀磨损机理进行分析,采用 PU 喷涂技术在水轮机叶片钢材( 0 Cr13 Ni5Mo) 上做一层聚氨酯弹性耐磨涂层,并对涂层的性能进行检测与分析。 结果 当聚氨酯组分的官能度为 2 . 4 时,聚氨酯弹性涂层表现出优异的综合力学性能,涂层与水轮机叶片间的物理结合力达到 12 . 6 MPa,涂层磨耗值保持在较低范围内(2 ~ 3 mg / 1000 r) 。 结论 聚氨酯弹性涂层能减缓含沙水流对水利工程中高速运转机械设备的冲刷磨损、空蚀破坏,延长水轮机叶片、水泵叶轮的使用寿命。
英文摘要:
      Objective To analyze the abrasion resistance of polyurethane elastic coating and study its application in water conservancy engineering surface protection. Methods The cavitation erosion mechanism of the hydraulic turbine blade was analyzed, then a polyurethane elastomer wear-resistant layer was coated onto the blade of hydraulic turbine(0Cr13Ni5Mo) using the PU spraying technology and the performance of the coating was analyzed. Results When the functionality of polyurethane was 2. 4, the Polyurethane elastomers exhibited good mechanical performance, with the binding force between the coating and the turbine blades reaching up to 12. 6 MPa and the coating wear value remaining at the lower end of the range of 2 ~ 3 mg / 1000 r. Conclusion Elastic polyurethane coating can reduce erosion wear and cavitation damage caused by sediment flow on high-speed operating machine and equipment of water conservancy projects, and thus extends the service life of the pump impeller and turbine blade.
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