基于变形补偿的激光选区熔化制备空心叶片技术研究  

Study on Hollow Blade Technology Formed by Selective Laser Melting Based on Deformation Compensation Method

作　　者：于晨潇 谢玲玲 祝世超 黄贞益 YU Chenxiao;XIE Lingling;ZHU Shichao;HUANG Zhenyi(School of Metallurgical Engineering,Anhui University of Technology,Ma′anshan 243032,China;College of Aeronautics and Mechanical Engineering,Changzhou Institute of Technology,Changzhou 213002,China)

机构地区：[1]安徽工业大学冶金工程学院,安徽马鞍山243032 [2]常州工学院航空与机械工程学院,江苏常州213002

出　　处：《机械制造与自动化》2024年第6期78-82,共5页Machine Building & Automation

摘　　要：受到激光选区熔化成型机制的影响,其制件中存在较大的残余热应力和变形,容易导致零件制造失败。为了解决SLM制件热应力变形的问题,以SLM制备的316L不锈钢空心叶片为研究对象,使用固有应变法对其进行残余应力和变形仿真,提出一种基于体素仿真模型的变形补偿方法并对其进行实验验证。仿真结果表明:SLM制备的316L空心叶片中残余热应力和热变形较大,最大分别可达370 MPa和0.2 mm。实验结果表明:该变形补偿方法能明显降低空心叶片的变形量;同原模型相比,经过变形补偿后,叶片表面区域的整体偏差从0.12 mm下降到了0.05 mm以内。In order to solve the problems of large residual thermal stress and deformation of SLM parts affected by the SLM forming mechanism and avoid parts manufacturing failure,taking the 316L stainless Steel hollow blade prepared by SLM as the research object,proposes a deformation compensation method based on the voxel simulation model,and carries out the residual stress and deformation simulation by inherent strain method and verification by experiments.The simulation results show that the residual thermal stress and thermal deformation in the 316L hollow blade prepared by SLM are relatively large,with a maximum of 370 MPa and 0.2 mm respectively.The experimental results show that the deformation compensation method can significantly reduce the deformation of the hollow blade.And compared with the original model,the overall deviation of the blade surface,after deformation compensation,decreases from 0.12 mm to 0.05 mm within.

关 键 词：激光选区熔化 固有应变法 数值仿真 空心叶片 变形补偿 

分 类 号：TH16[机械工程—机械制造及自动化]