基于中空激光光内送粉技术的扇形结构件激光成形研究

发布时间：2018-04-15 16:45

  本文选题：中空激光光内送粉 + 变姿态　； 参考：《红外与激光工程》2017年09期

【摘要】：基于中空激光光内送粉技术,运用实时变姿态方法和法向分层方法,进行了具有不等高熔道特征的扇形结构件成形研究。分析了熔道层高与扫描速度之间的对应关系,结合不等高熔道的几何模型和熔道层高与扫描速度之间的关系,采用分段变速的方法熔覆出了不等高熔道。在此基础上进行多道不等高熔道堆积,成形出了扇形薄壁墙结构。分析表明,所获得成形件尺寸精度较高,相对尺寸误差控制在7%以内;成形件各处显微组织差异较小,组织细密、均匀。
[Abstract]:Based on the technology of hollow-laser optical internal powder feeding, using real-time attitude changing method and normal stratification method, the forming of fan-shaped structural parts with different high melting channel characteristics was studied.The relationship between the height of the fusion channel and the scanning velocity is analyzed. Based on the geometric model of the non-uniform fusion channel and the relationship between the height of the fusion channel and the scanning velocity, the variable velocity method is used to fuse the non-uniform fusion channel.On the basis of this, the multi-channel non-uniform fusion channel accumulation is carried out, and the fan-shaped thin-wall structure is formed.The analysis shows that the dimension accuracy of the formed parts is high, the relative dimension error is controlled within 7%, and the microstructure difference is small, the microstructure is fine and uniform.
【作者单位】： 苏州大学机电工程学院;西安交通大学机械工程学院;
【基金】：国家重点研发计划(2016YFB1100300) 江苏省重点研发项目(BE2015067)
【分类号】：TN249
，

本文编号：1754947