铸造技术2017，Vol.38Issue(7)：1713-1717,1721,6.DOI:10.16410/j.issn1000-8365.2017.07.048
金属堆焊成型层间应力分析及工艺优化
Stress Analysis Between Layers and Process Optimization in Metal Surfacing
摘要
Abstract
Based on the basic theories of finite element analysis in welding,single pass surfacing welding was simulated and analyzed by Visual-weld and Sysweld software.The change regulations of welding temperature field,stress and deformation field were obtained.The influence of welding speed and path on welding residual stressed was studied.The optimized welding process was verified by machining experiments.The results show that stress concentration appears in the junctions of each layers and starting and breaking arc points.These places are dangerous areas.The stress on the previous layer is released with the next layer.Longitudinal residual stress in weld zone increases and the transverse residual stress reduces with the increase of welding speed.The residual stress in the weld zone and the substrate reduces and the welding deformation is small with the return welding path.Crater defects at breaking arc points are improved by this method.关键词
堆焊/数值模拟/焊接速度/焊接路径/残余应力变形Key words
multi-pass welding/numerical simulation/welding speed/welding path/residual stress and deformation分类
矿业与冶金引用本文复制引用
许燕,李丙如,鲍阳,周建平,薛瑞雷..金属堆焊成型层间应力分析及工艺优化[J].铸造技术,2017,38(7):1713-1717,1721,6.基金项目
国家自然科学基金资助项目(51665055) （51665055）
新疆维吾尔自治区高技术研究项目(201113129) （201113129）
新疆维吾尔自治区青年科技创新人才培养工程资助项目(gn2015yx008) （gn2015yx008）
