低孔隙超细涂层的高速电弧喷涂枪的制备  

HIGH VELOCITY ARC SPRAY GUN TO OBTAIN SPRAYED COATING WITH LOW POROSITY AND FINE COATINGS

作　　者：汪瑞军[1] 黄小鸥[1] 

机构地区：[1]中国农业机械化科学研究院表面工程技术研究所,北京市100083

出　　处：《焊接》2004年第2期26-29,共4页Welding & Joining

摘　　要：开发出配备三种不同喷嘴结构的新型高速电弧喷涂枪 ,与DZ4 0 0型电弧喷涂系统配套 ,获得了低孔隙超细涂层结构。利用这一系统喷涂三种常用丝材 4Cr13、FeCrAl、7Cr13(药芯焊丝 ) ,采用SEM -IPS图像分析仪检测不同结构喷嘴喷涂粒子的形貌及粒度范围 ,采用HITACHI的S - 350 0N型扫描电镜和OXFORD生产的INCA型能谱分析仪联机分析涂层氧化物含量、孔隙率与涂层的层片厚度。Providing for the DZ400 type arc spray system, the new design high-velocity arc spray gun with three different nozzles is developed to produce the sprayed coating with the structure of superfine and low porosity. This system can be used to spray the three normal wires of 4Crl3, FeCrAl and 7Crl3 (flux cored wires). With the SEM to analysis shape and particles size sprayed by the nozzles by different parameters, as well as with the S-3500N SEM (made by HITACHI) and the INCA ESA (made by OXFORD) identify the oxides content, porosity and thickness of the coatings.

关 键 词：电弧喷涂 喷嘴结构 涂层结构 孔隙率 氧化物含量 涂枪 制备 超细涂层 

分 类 号：TG155.5[金属学及工艺—热处理] TG174.442[金属学及工艺—金属学]