摘要
为了提高篦冷机篦板的服役寿命,用激光表面合金化技术在ZG40Cr25Ni20抗磨耐热钢表面制备合金层。在优化的工艺参数下,篦板表面光滑、无气孔和裂纹;合金硬化层与基体形成良好的冶金结合;合金硬化层从表层到底部的显微组织依次为等轴晶、树枝晶和柱状晶;激光合金硬化层的平均硬度为840 HV,约为基体硬度的1.6倍。水泥厂装机试验表明,激光合金化后的篦板服役时间平均延长1倍以上。
In order to improve the service life of the grilled board of the grate cooler, the laser surface alloying technology is used to prepare an alloy layer on the surface of the ZG40 Cr25 Ni20 anti-wear and heat-resistant steel. Under the optimal process parameters, the surface of the grilled board is continuous and smooth without pores and cracks;the alloy hardened layer forms a good metallurgical bond with the substrate;The microstructure of the alloy hardened layer from the surface to the bottom is equiaxed crystals, dendrites and columnar crystals in sequence;The average hardness of the laser alloy hardened layer is 840 HV, which is about 1.6 times that of the matrix. The installation experiment of the cement plant shows that the service time of the grate slab after laser alloying has been prolonged by more than one time on average.
作者
孙荣敏
陆荣幸
冯树强
Sun Rongmin;Lu Rongxin;Feng Shuqiang(College of Mechanical Engineering,Liuzhou Institute of Technology,Liuzhou,Guangri 545000,China;Liuzhou Jin Bai Hui Laser Technology Co.,Ltd.,Liuzhou,Guangri 545003,China)
出处
《应用激光》
CSCD
北大核心
2022年第10期120-125,共6页
Applied Laser
基金
广西高校中青年教师(科研)基础能力提升项目(2019KY1101)。
