摘要
为了提高收割机刀片的使用寿命,采用激光熔覆工艺在45~#钢表面制备了中锰铁基合金激光熔覆层。利用扫描电镜(SEM)、光学显微镜(OM)、X射线衍射仪(XRD)、显微硬度计和MLD-10型动载磨料磨损试验机分析了熔覆层的显微组织,测试了涂层的显微硬度和冲击磨料磨损性能。结果表明:涂层与基体形成冶金结合,涂层无裂纹、气孔等缺陷。激光熔覆层的显微硬度为500~600HV,激光熔覆层与渗碳试样相比具有较高的抗冲击磨料磨损性能,能够提高收割机刀片的使用寿命。
In order to improve the service life of the harvester blade, the medium manganese alloy laser cladding coating has been prepared on the surface of 45e steel by laser cladding. The microstructure, hardness, impact abrasive wear resistance of clad- ding layer were researched by scanning electron microscope, optical microscope, X-ray diffractometer, micro-hardness tester and MLD-10 type impact abrasive wear tester. The results show that there was a good metallurgical bond between coating and substrate and the coating was free of cracks and pores. The micro-hardness of laser cladding layer is 500~600 HV. Compared with the carburized sample, the laser cladding layer has higher impact abrasive wear resistance, and can improve the service life of the harvester blade.
作者
张晓东
朱晓亮
Zhang Xiaodong1 , Zhu Xiaoliang2(1 College of Mechanical and Electrical, Hangzhou polytechnic, Hangzhou, Zhejiang 311402, China ; 2 College of Information and Electronic Engineering, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, Chin)
出处
《应用激光》
CSCD
北大核心
2018年第1期19-25,共7页
Applied Laser
基金
国家自然科学基金重点资助项目(项目编号:61307005)
杭科院校科研课题资助项目(项目编号:HKYYB-2012-5)
浙江省新苗计划资助项目(项目编号:2016R455003)
浙江省自然基金资助项目(项目编号:LQ16E02002)
杭州市131第三人才资助项目
关键词
激光熔覆
磨损
显微组织
laser cladding
wear
microstructure
