灰口铸铁件内油污对电弧喷涂涂层结合强度的影响  

Degreasing for Reparation of Cast Iron Parts by Arc Spraying

作　　者：陈志强[1] 郝建军[1] 刘洪杰[1] 马跃进[1] 

机构地区：[1]河北农业大学机电工程学院,河北保定071001

出　　处：《材料保护》2006年第3期59-61,共3页Materials Protection

基　　金：河北省科委资助项目部分内容(项目编号:012121170)

摘　　要：电弧喷涂技术在铸铁零件上应用的研究较少。为此研究了铸铁零件电弧喷涂前表面预处理工艺对处理表面的影响,定量地分析了有机溶剂清洗除油、化学除油和烘烤除油的除油效果及其对结合强度的影响,通过拉伸试验对比了不同除油方法获得电弧喷涂层的结合强度。结果表明:对于内部渗有油污的铸铁基体,烘烤除油效果好,可以大幅度地提高涂层与基体的结合强度。Arc-spraying technology was widely used in various industrial applications, but uncommon in cast iron substrate. Different surface pretreatment technologies were tested for arc spraying of cast iron. The deoiling effects of three degreasing ways as solvent cleaning, lye cleaning and baking were investigated quantificationally. The bonding strength of arc-sprayed wire 3Cr13(2 mm) coating on cast iron was determined by tensile test. Results show that baking is the best way to remove oily soil on or in the substrate of cast iron, and can greatly improve the bonding strength of spraying coating.

关 键 词：电弧喷涂 结合强度 表面预处理 除油 铸铁 

分 类 号：TG174.44[金属学及工艺—金属表面处理]