激光金属制造薄壁零件z轴单层行程模型

基金项目: 国家重点基础研究发展计划资助项目(2007CB707704);国家自然科学基金资助项目(50675171);长江学者和创新团队发展计划资助项目(PCSIRT0646)

Model of layer thickness of thin-walled parts in laser metal direct manufacturing

State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China

摘要: 为了提高激光金属直接制造薄壁零件的成形精度,制备出表面平整的薄壁零件,研究了z轴单层行程参数对成形薄壁试件表面精度的影响规律,提出并验证了z轴单层行程理论模型.结果表明,在一定简化条件下,根据质量守恒定律,推导出任意参数下的z轴单层行程模型,该模型显示z轴单层行程是单道熔覆层宽度与高度的函数,当z轴单层行程与模型计算值一致时,能够制造出表面平整的薄壁零件.
- 激光金属直接制造 /
- 薄壁零件 /
- z轴单层行程 /
- 表面平整
Abstract: To improve the forming accuracy of thin-walled parts with smooth surface in laser metal direct manufacturing,the effect on the surface smoothness of samples is studied by different layer thicknesses.A model of layer thickness of thin-walled parts by single-trace laser cladding is proposed theoretically and studied by experimentally.The results indicate that the layer thickness can be defined as a function of the width and height of single-trace cladding layer under some conditions;when the layer thickness is equal to the value calculated,the sample can be fabricated with smooth surface.It is beneficial to choose process parameters for forming thin-walled parts in laser metal direct manufacturing.
- laser metal direct manufacturing /
- thin-walled parts /
- layer thickness /
- surface smoothness