光内送丝激光熔覆修复砂光机轧辊
Roller Repairing with Intern Coaxial Wire Feeding Laser Cladding
李春生, 石世宏, 刘 双, 蔡齐飞
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作者单位：苏州大学 机电工程学院, 江苏 苏州 215021
中文关键字：激光熔覆； 光内送丝法； 多道搭接； 轧辊修复
英文关键字：laser cladding; intern coaxial powder feeding; multi-track overlapping; roller reparing
中文摘要：采用激光光内送丝法并利用多道搭接熔覆技术，对20钢砂光机轧辊的凹坑缺陷进行修复，结果表明，修复后的轧辊其几何尺寸复原，添加材料的组织性能优于基体，二者的界面达到了良好的冶金结合，修复层与凹坑周围基体的残余应力很小，无几何变形。
英文摘要：The surface dents of rolls made with 20 steel was modified by multi-track overlapping with laser cladding feeding power coaxially from the intern hollow space. The results show that, after repairings the shape of roller is resumed, the microstructure and properties of the added material are better than the base and metallurgical bond is obtained in the interface. The residual stress is very small and with little deformation around the surface dents.