无缝线路磨损钢轨激光熔覆自动修复方式的研究

发布时间：2019-03-08 10:54

【摘要】：由于列车的高速化和重载化,钢轨磨损问题越来越严重,采用修复质量高、修复速度快的激光熔覆技术可以对其进行在线快速修复。为此,采用三维扫描仪首先对磨损钢轨进行扫描,然后将扫描点云数据进行三维重构、路径规划及数据格式转换,最后利用优化的数据驱动机器手臂和激光熔覆装置对磨损钢轨进行自动修复。修复工艺结果表明,对5 mm的磨耗层进行7层修复,利用修复道与道之间和层与层之间的回火作用,修复层的组织马氏体含量少,硬度为330~360 HV;经过600℃回火处理10 min后,加入钒元素的铁基合金粉末激光熔覆修复后钢轨母材、热影响区、修复层硬度均在300~340 HV,组织为回火索氏体;修复钢轨的耐磨性约为钢轨母材的87%,达到修复目的。
[Abstract]:Due to the high speed and heavy load of the train, the rail wear problem becomes more and more serious. The laser cladding technology, which has high repair quality and fast repair speed, can be used for on-line rapid repair of rail wear. Therefore, firstly, the worn rail is scanned by a 3D scanner, and then the scanning point cloud data is reconstructed, path planning and data format conversion are carried out. Finally, an optimized data-driven robotic arm and laser cladding device are used to repair the worn rail automatically. The results showed that the wear layer of 5 mm was repaired by 7 layers. The microstructure martensite content of the repair layer was less and the hardness of the repair layer was 330 脳 360 HV; by means of tempering between track and layer. After tempering at 600 鈩，

本文编号：2436733