【摘要】：由于列車的高速化和重載化,鋼軌磨損問題越來越嚴重,采用修復質量高、修復速度快的激光熔覆技術可以對其進行在線快速修復。為此,采用三維掃描儀首先對磨損鋼軌進行掃描,然后將掃描點云數據進行三維重構、路徑規(guī)劃及數據格式轉換,最后利用優(yōu)化的數據驅動機器手臂和激光熔覆裝置對磨損鋼軌進行自動修復。修復工藝結果表明,對5 mm的磨耗層進行7層修復,利用修復道與道之間和層與層之間的回火作用,修復層的組織馬氏體含量少,硬度為330~360 HV;經過600℃回火處理10 min后,加入釩元素的鐵基合金粉末激光熔覆修復后鋼軌母材、熱影響區(qū)、修復層硬度均在300~340 HV,組織為回火索氏體;修復鋼軌的耐磨性約為鋼軌母材的87%,達到修復目的。
[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，

本文編號：2436733