基于正交试验的水轮机表面涂层抗磨蚀特性分析  

Analysis of Abrasion Resistance of Turbine Surface Coating Based on Orthogonal Test

作　　者：谭会林 李志红[1] 梁兴[1] 谢明祥[1] 刘毅[1] TAN Hui-lin;LI Zhi-hong;LIANG Xing;XIE Ming-xiang;LIU Yi(Key Laboratory of Precision Drive and Control of Jiangxi Province,Nanchang Institute of Technology,Nanchang 330099,China)

机构地区：[1]南昌工程学院江西省精密驱动与控制重点实验室

出　　处：《水电能源科学》2019年第6期146-148,共3页Water Resources and Power

基　　金：江西省教育厅科技项目(GJJ170988);江西省精密驱动与控制重点实验室项目(PLPDC-KFKT-201623);江西省科技厅基金青年项目(20171BAB216054)

摘　　要：为了减轻水轮机的磨蚀危害,采用赣江原型沙,在实验室条件下模拟磨蚀工况,通过正交试验法测定了2种不同沙粒粒径、3种不同时间段、2种水流含沙量、2种表面涂层(钴铬碳化钨涂层和钴铬碳化钨微晶石蜡复合涂层)条件下水轮机磨蚀失重量,并对试验结果进行极差分析。试验结果表明,磨蚀时间、表面涂层、水流含沙量、沙粒粒径4种因素对水轮机磨蚀破坏的影响程度依次减小;对比各因素极差值可知低孔隙率、高结合强度的表面涂层磨蚀失重量小,抗磨蚀性能好。In order to reduce the damage of hydraulic turbine abrasion,the prototype sand in the Ganjiang river was used to simulate the abrasion working condition in the laboratory.The weight loss of water turbine abrasion under 2 kinds of sand grain sizes,3 kinds of time periods,2 kinds of water flow sediment,and 2 kinds of surface coatings(WC-10Co-4Cr coating and WC-10Co-4Cr microcrystalline wax composite coating)were measured by orthogonal test method,and the test results were analyzed by range difference.The experimental results show that the influence degree of four factors on the abrasion failure of hydraulic turbine decreases successively.By comparing the range difference values of various factors,it can be seen that the surface coating with low porosity and high bonding strength has small loss weight and good abrasion resistance.

关 键 词：正交试验 水轮机 磨蚀 表面涂层 

分 类 号：TV734.21[水利工程—水利水电工程] TK73[交通运输工程—轮机工程]