筛分板表面氩弧熔覆修复研究  

Surface repairing of sieve plate by argon arc cladding

作　　者：孟媛媛[1] 任瑞晨[2] 张乾伟[2] 秦海峰 孟亚雯 

机构地区：[1]辽宁工程技术大学矿业技术学院,辽宁葫芦岛125100 [2]辽宁工程技术大学矿业学院,辽宁阜新123000 [3]抚顺石化公司腈纶化纤厂,辽宁抚顺113000

出　　处：《金属热处理》2015年第1期68-70,共3页Heat Treatment of Metals

摘　　要：通过金相显微镜观察、硬度及耐磨性测试,研究了涂层厚度、焊接电流对熔覆层组织、力学性能的影响。结果表明,基体与熔覆层连接处形成良好的冶金结合;在熔覆层厚度为3 mm,焊接电流为150 A时,显微组织中有大量的奥氏体与碳、硼化物共晶,熔覆层硬度和耐磨性很好。The effects of thickness and welding currents on microstructure and mechanical properties of the cladding layer were analyzed by optical microscope observation, hardness and wear resistance test.The results show that the bonding layer forms between the cladding layer and substrate is a good metallurgically combination.When the cladding layer thickness is 3 mm and welding current is 150 A, high hardness and good wear resistance can be obtained due to the microstructure of cladding layer has lots of eutectic of austenite and carbide boride.

关 键 词：氩弧熔覆 耐磨性 熔覆层 铁基自熔合金 

分 类 号：TG174.4[金属学及工艺—金属表面处理]