摘要
针对压缩机叶片激光再制造成形的工程实际需求,从激光再制造成形表面平整度假设出发,获得了熔覆层搭接率数学模型并实验验证,通过分析单道熔覆层形状和优选稀释率,确定了FV520(B)钢基体上熔覆FeCrNiCu系合金粉末的最优化匹配工艺参数;通过量化分析激光再制造成形过程,规划了最佳成形路径和工艺过程,实现了体积损伤叶片模拟件激光再制造成形。渗透探伤和金相显微测量结果表明:再制造成形部位表层无气孔、裂纹等缺陷产生,成形部位形状尺寸误差小于2mm,角度误差小于3°。
Aimed at the engineering actual demand of laser remanufacture forming for compressor blade, based on the hypothesis of surface smoothness for laser remanufacture forming, the mathemat- ics model of cladding layer overlapping rate was obtained and verified by experiment. Through analysis on the shape of single laser cladding layer and screening the dilution, the optimized matched process parameters for the FeCrNiCu series alloy powder on the FV520（B） substrate were determined. Thro- ugh quantitative analysis on the laser remanufacture forming process, the scanning path and technical process were planned. Also the laser remanufacture forming of the blade simulator with volume dam- age was realized. The results of the penetration testing and metallographie microscope measurement show that there is not blowhole and crack on the surface of the forming places, the shape dimension error of the forming places is controlled less than 2mm, and the angle error is controlled less than 3°.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2015年第1期6-12,共7页
Journal of Materials Engineering
基金
国家重点基础研究发展计划(973计划)项目(2011CB013403)
