水泵WC-10Co4Cr微纳米复合涂层技术的研究与应用
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摘要
泥沙磨蚀是影响水泵工作效率和使用寿命的关键技术问题之一,利用WC-10Co4Cr微纳米复合涂层技术可以较好的解决这一问题。采用超音速火焰热喷涂技术在水泵过流部件常用材料00Cr18Ni5Mo3Si2不锈钢上制备该涂层,并对涂层的硬度、耐磨损、耐磨蚀等性能进行了研究。结果表明:高强度、高硬度以及较好的韧性使得涂层具有远高于基材的耐磨性能,并且涂层与基材之间呈高强度结合使得涂层不易开裂和剥落,能够保证较长的使用周期。将其应用到高泥沙河流水泵过流部件表面,可以大幅提高水泵的抗磨蚀性能,延长其使用寿命。
Sediment abrasion is one of the key technical problems which affect the working efficiency and service life of water pump. The WC-10 Co4 Cr micro-nano composite coating technology can be used to better solve this problem. The coating was prepared by the supersonic flame thermal spray coating technology on the 00 Cr18 Ni5 Mo3 Si2 stainless steel which is a common material for the water pump flow component. The hardness,wear and abrasion resistance of the coating was tested and analyzed. The results show that high strength,high hardness and better toughness make the coating have much higher wear resistance than the matrix. The high bond strength between the ceramic coating and the matrix makes the coating hard to crack and strip,and can ensure longer service life of the coating.The application of this coating on the surface of water pump flow component in the river with high sediment content can greatly improve the abrasion resistance of the pump and extend its service life.
Sediment abrasion is one of the key technical problems which affect the working efficiency and service life of water pump. The WC-10 Co4 Cr micro-nano composite coating technology can be used to better solve this problem. The coating was prepared by the supersonic flame thermal spray coating technology on the 00 Cr18 Ni5 Mo3 Si2 stainless steel which is a common material for the water pump flow component. The hardness,wear and abrasion resistance of the coating was tested and analyzed. The results show that high strength,high hardness and better toughness make the coating have much higher wear resistance than the matrix. The high bond strength between the ceramic coating and the matrix makes the coating hard to crack and strip,and can ensure longer service life of the coating.The application of this coating on the surface of water pump flow component in the river with high sediment content can greatly improve the abrasion resistance of the pump and extend its service life.
引文
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[2]路金喜.水泵的泥沙磨蚀及对策[J].排灌机械工程学报,1999(1):20-23.
[3]储训.水泵抗汽蚀和磨蚀防护技术进展[J].水泵技术,1999(2):20-25.
[4]顾四行.水泵泥沙磨损问题研究[C]//全国大型泵站更新改造研讨暨新技术、新产品交流大会,2009:404-407.
[5]李雪麟,杨安林.黄河多泥沙水源离心泵站水泵磨蚀成因及防治对策[J].中国农村水利水电,2009(2):91-94.
[6]杜贵荣,路金喜,王丽芳,等.水泵的泥沙磨蚀及防治措施[J].河北农业大学学报,2005,28(4):101-103.
[7]白正裕,王少波.万家寨引黄工程大型水泵抗泥沙磨蚀的综合措施[C]//水轮机抗磨蚀技术研讨会,2006:249-253.
[8]Qiao Y F,Fischer E,Dent A.The effect of fuel chemistry and feedstock powder structure on the mechanical and tribological properties of HVOF thermal-sprayed WC-Co coating with very fine structures[J].Surface and Coating Technology,2003(172):24-41.
[9]刘娟,余江成,潘罗平.HVAF喷涂WC-12Co涂层的空蚀、磨损及磨蚀性能研究[J].水力发电学报,2012(3):230-233.
[10]汪钰,冯德兴,张东辉,等.奥氏体不锈钢压力容器封头开裂缺陷的探讨[J].压力容器,2017,34(6):74-80.
[11]许其华.急冷器入口椎体开裂失效原因分析[J].化工设备与管道,2017,54(3):20-22.
[12]龚霄,邓超志,朱怀金,等.一种输变电设备多源数据处理系统的功能设计[J].机电工程,2017,33(6):659-663.
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