表面喷焊处理对铸铁表面组织和性能的影响  

Effect of Surface Spray Treatment on Microstructure and Mechanical Behavior of Cast Iron

作　　者：韩秋华[1] 王瑞权[1] 王雨怀[2] 

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃730050 [2]黑龙江科技学院材料科学与工程学院,黑龙江150027

出　　处：《大型铸锻件》2010年第1期4-8,24,共6页Heavy Casting and Forging

摘　　要：利用镍基自熔合金粉末,采用氧乙炔火焰喷焊技术在灰铸铁HT200基体表面制备喷焊层,研究了喷焊层的成分分布、组织与性能。结果表明,镍基喷焊层与铸铁基体形成了良好的冶金结合,合金元素在喷焊层与基体界面附近连续分布,保证了采用火焰喷焊技术得到的涂层与基体之间具有较高的结合强度。Thls paper has prepared the spray welding coatings on the HT 2000 gray cast iron surface by oxyacetylene flame spray welding technique with Ni based selffluxing alloy powder, and investigated the microstructure, composition and properties distribution. The results show that the better metallurgical bonding layer has been formed between the spray welding coating and base material, the alloy elements have distributed continuously from spray welding coating to base material, and the high bending strength has been guaranteed.

关 键 词：镍基合金 氧乙炔火焰喷焊 显微组织 

分 类 号：TG457.12[金属学及工艺—焊接]