文档介绍：金属基陶瓷复合堆焊层的研究刘政军,邵大伟(沈阳工业大学材料科学与工程学院,辽宁沈阳110178)摘要:众所周知我国每年因磨损而造成的经济损失十分惊人。磨料磨损是所有类型的磨损中最主要的一种磨损,约占所有磨损的50%。本课题的题目是金属基陶瓷复合堆焊层的研究。主要研究以铁基为基础再加入钛铁、硼铁、镍粉等,即在一定规格的低碳钢钢板上事先铺放混合好的合金粉末,烘干一定时间后,采用等离子弧堆焊技术堆焊合金粉末,通过焊接冶金反应,使其原位自生成陶瓷硬质相。采用等离子弧堆焊,使铁基表面形成堆焊层,通过适当调节焊接参数(如焊接电流、焊接速度等)和焊接工艺方法以及调整配方成分比例通过反复的实验对比使堆焊层即具有高硬度又具有耐磨损的性质。关键词:磨损;等离子弧堆焊;铁基合金;positeOverlaywithMetallicBaseLIUZheng-jun,SHAODa-weiAbstract:Asisknowntous,,poses50%'stopicisthemetal-poundbuilt-,theferro-boron,thenickelpowderagaintaketheferricradicalasthefoundationandsoon,beforehandsetsthegoodmixedpowderedalloyoncertainspecification'slow-carbonsteelplate,afterdryingcertaintime,usestheplasmaarcbuilt-upweldingtechnologybuilt-upweldingpowderedalloy,respondedthroughtheweldingmetallurgy,-upwelding,causestheferricradicalsurfacetoformpilesthelayer,throughadjustmentthesuitableweldingparameter(forexampleweldingcurrent,weldingspeedandsoon)andtheweldingprocessmethodaswellastheadjustmentformulaingredientproportionenablesthebuilt-:abrasion;plasmaarcsurfacing;ferroalloy;risisten