球阀球芯涂层硬度分布问题探究及其解决方式  

Research on Hardness Distribution of Ball Valve's Ball Center Coating and Its Solution

作　　者：马军 戴万祥 刘海波 王学朋 徐喜龙 MA Jun;DAI Wan-xiang;LIU Hai-bo;WANG Xue-peng;XU Xi-long(Wuzhong Instrument Co.,Ltd.,Wuzhong 756110,Ningxia,China)

机构地区：[1]吴忠仪表有限责任公司,宁夏吴忠756110

出　　处：《阀门》2022年第2期128-132,共5页VALVE MAGAZINE

摘　　要：研究如何通过控制球芯涂层磨削过程中前期的磨削时长,以控制球芯表面硬度均匀性。选取同批次8个球芯为研究对象,跟踪并量化记录球芯完整的加工过程,对球芯进行质量追踪试验。介绍了球芯预处理、火焰喷涂与真空熔覆等过程,对球芯进行定位点标记,记录其磨削时长并检测球芯硬度,最后对试验结果进行分析,得出控制磨削时长有利于保证球芯硬度分布的均匀性。Study how to control the uniformity of the surface hardness of the core by controlling the length of the early grinding in the grinding process of the core coating.Eight ball cores from the same batch were selected as research objects,and the complete processing process of ball cores was tracked and quantitatively recorded,and the quality tracking test of ball cores was carried out.The process of ball core pretreatment,flame spraying and vacuum cladding was introduced,and the ball core was marked at the registration point,the grinding time was recorded and the hardness of the ball core was measured.Finally,the test results were analyzed,and it was concluded that controlling the grinding time was beneficial to ensure the uniformity of ball core hardness distribution.

关 键 词：球阀 球芯 涂层 磨削 硬度 

分 类 号：TH134[机械工程—机械制造及自动化]