摘要
研究激光熔覆过程中离焦量对农机深松铲表面熔覆层质量的影响。在扫描速度和送粉电压不变的情况下,分析不同的离焦量对熔覆层的维氏硬度和金相组织的影响,确定离焦量的最优值。结果显示:离焦量为360 mm时,熔覆组织均匀,晶体细小的熔覆层、细小、高硬度、耐磨性、耐腐蚀性均良好。适宜的离焦量有利于获得最佳性能。
The influence of defocus on the surface quality of deep loose shovel was studied.In the case of constant scanning speed and powder feeding voltage,the influence of different defocusing amount on Vickers hardness and metallographic structure of cladding layer is analyzed,and the optimal value of defocusing amount is determined.As a result,when the defocus is 360 mm,the cladding structure is uniform,and the fine cladding layer,fine,high hardness,wear resistance and corrosion resistance of the crystal are all good.the appropriate amount of defocusing is beneficial to obtain the best performance.
作者
闫勇
王宏立
李庆达
孙旸
Yan Yong;Wang Hongli;Li Qingda;Sun Yang(Heilongjiang Bayi Agricultural Reclamation University,Daqing 163319,Heilongjiang,China)
出处
《农业技术与装备》
2020年第2期42-43,共2页
Agricultural Technology & Equipment
基金
黑龙江省自然科学基金优秀青年项目(YQ2019E032)
黑龙江八一农垦大学“杂粮生产与加工”特色学科项目。
关键词
激光熔覆
离焦量
金相组织
耐磨性
显微硬度
laser cladding
defocus
metallographic structure
wear resistance
microhardness
