白口铸铁磨面辊齿等离子弧重熔工艺  

Study on the plasma arc remelting process of white cast iron roll teeth

作　　者：王萌萌[1] 王国凡[1] 任光利 

机构地区：[1]山东建筑大学材料科学与工程学院,山东济南250101 [2]山东利江粮油科技发展有限公司,山东聊城252800

出　　处：《焊接技术》2010年第6期32-35,共4页Welding Technology

基　　金：国家科技型中小企业技术创新基金(07c26213700600)

摘　　要：采用等离子弧对白口铸铁磨面辊齿面进行重熔处理,通过正交试验,经方差分析获得了重熔处理的合理工艺参数,并简要分析了各个工艺参数对重熔后磨面辊齿硬度和重熔耐磨层深度的影响。研究结果表明,工作电弧电流值是影响辊齿齿顶硬度的主要因素,重熔深度主要与喷枪枪头和齿顶间距离有关;重熔后齿顶表面的硬度在HRC65~HRC67之间,重熔耐磨层深度在1.0mm左右;组织由亚共晶转变为共晶和过共晶组织。White cast iron roll was remelted with plasma.Orthogonal test was adopted to obtain the optimal parameters,and the process parameters affecting hardness and depth were analyzed by variance analysis.The results indicated that the working current and the distance between the roll and plasma arc were the main affecting maters to hardness and depth.The hardness value was HRC65-HRC 67,and the depth was about 1.0 mm,and the microstructure transformed from hypo-eutectic structure to eutectic and hyper-eutectic structure.

关 键 词：白口铸铁 等离子弧重熔 辊齿 硬度 

分 类 号：TG456.2[金属学及工艺—焊接] TG457.12