引用本文:苏新勇， 刘基凯， 杨秀红.船用辅汽轮机转子汽封轴颈喷涂WC–12Co涂层的摩擦学性能[J].中国表面工程,2011,24(5):89~93
SU Xin–yong, LIU Ji–kai, YANG Xiu–hong.Wear Resistance of WC–12Co Coating Sprayed on the Sealed Shaft Neck of the Auxiliary Steam Turbine Rotor for a Ship[J].China Surface Engineering,2011,24(5):89~93
【打印本页】   【HTML】   【下载PDF全文】   【查看/发表评论】  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被：浏览 3783次   下载 2136次 本文二维码信息
码上扫一扫！
分享到： 微信 更多
字体:加大+|默认|缩小-
船用辅汽轮机转子汽封轴颈喷涂WC–12Co涂层的摩擦学性能
苏新勇， 刘基凯， 杨秀红
海军北海表面工程推广站， 山东 青岛 266001
摘要:
采用超音速火焰喷涂技术和电镀技术分别在45钢试件表面制备了WC–12Co涂层和硬铬镀层，测试了涂层、镀层的显微硬度和室温摩擦磨损性能，并观察分析了磨损表面形貌。结果表明：WC–12Co涂层的显微硬度是电镀硬铬层的1.5倍以上；在时间为1.5 h，载荷为20 N和100 N的试验条件下，电镀硬铬层摩擦磨损失质量分别为WC12Co涂层的3倍和4倍，表明WC–12Co涂层的耐磨性能明显优于电镀硬铬镀层；与硬铬镀层相比，WC–12Co涂层能缩短磨合时间，较快地进入稳定磨损阶段，该阶段因WC–12Co涂层摩擦因数低，波动范围小，更有利于摩擦状态下延长工件的使用寿命。将超音速火焰喷涂技术用于修复汽轮机转子汽封轴颈，可极大提高汽轮机转子的性能，降低维修频率，延长使用寿命。
关键词:  超音速火焰喷涂  WC12Co涂层  摩擦磨损  改性修复
DOI：
分类号:
基金项目:
Wear Resistance of WC–12Co Coating Sprayed on the Sealed Shaft Neck of the Auxiliary Steam Turbine Rotor for a Ship
SU Xin–yong, LIU Ji–kai, YANG Xiu–hong
Station for Spreading Superficeal Engineering of North China Sea Fleet, Qingdao Shandong 266001
Abstract:
WC–12Co coating and electronic hard chrome plating were prepared on 45 steel by means of high velocity oxygen fuel spray (HVOF) and electronic hard chrome (EHC) plating respectively. Microhardness and wear resistance of the prepared WC12Co coating and electronic hard chrome plating were tested by the block on ring friction and wear tester. And the surface morphologies were observed and analized by microscope. The results show that the microhardness of WC–12Co coating is 1.5 times higher than that of the EHC plating. And mass loss of EHC plating are 3 times and 4 times more than WC–12Co coating under 20 N and 100 N loads for 1.5 h, which indicates that the wear resistance of WC–12Co coating is exellent. At the same time the WC–12Co coating can make the seating time shorter, entering the steady wear stage fast. In this stage the friction coefficient of WC–12Co coating is lower and steady, which is propitious to extend the lifetime of workpiece in friction state. The modification repair on the sealed shaft neck of the auxiliary steam turbine rotor by HVOF can improve the performance, reduce the repair frequency and extend the lifespan.
Key words:  high velocity oxygen fuel spay (HVOF)  WC12Co coating  friction and wear  modification repair
手机扫一扫看