摘要
采用高铬铁基耐磨合金细粉做成药芯焊丝,分别用埋弧堆焊和等离子束堆焊方法制备耐磨试样,对试样的显微组织、硬度分布、耐磨性分别进行研究。实验表明:埋弧堆焊和等离子束堆焊组织具有较明显的区别,埋弧堆焊试样结晶定向性更好,晶粒更细化;埋弧堆焊涂层显微硬度平均值为791HV0.2,等离子束堆焊涂层显微硬度平均值为774HV0.2,埋弧堆焊涂层的显微硬度分布更均匀;耐干砂磨粒磨损性能埋弧堆焊是等离子束堆焊的1.7倍。
The wear-resistant samples were prepared by submerged arc hardfacing and plasma arc hardfacing process respectively using high chromium iron base alloy fine powder flux-cored wire.The microstructure,hardness distribution,wear resistance of the samples were studied respectively.The experiments show that the microstructure has a significant difference between the submerged arc hardfacing sample and the plasma arc hardfacing sample,crys-tallization stereospecificity of the submerged arc hardfacing sample is better,and its grain is refined;the average mi-crohardness of the submerged arc hardfacing sample is 791 HV0.2 ,the average microhardness of the plasma arc hard-facing sample is 774HV0.2 ,the submerged arc hardfacing sample has more uniform microhardness distribution;the dry sand abrasive wear resistance of the submerged arc hardfacing sample is about 1.7 multiples that of the plasma arc hardfacing sample.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2015年第12期110-113,共4页
Materials Reports
基金
青岛市科技发展计划(12-1-4-6-(4)-jch)
青岛市技术创新平台建设计划(14-7-2-42-gx)
青岛经济技术开发区重点科技发展计划(2013-1-51)
山东科技大学科研创新团队支持计划
国家级大学生创新创业训练计划
关键词
埋弧堆焊
等离子束堆焊
高铬铁基药芯焊丝
显微组织
耐磨性能
submerged arc hardfacing
plasma arc hardfacing
high chromium iron based flux-cored wire
mi-crohardness
wear-resistant property
