In order to reduce the trial number of selective laser melting(SLM)and efficiently print an aluminum alloy submersible pump impeller,ANSYS software was used to simulate the stress,deformation and scraper collision in SLM forming process under different placement and support design schemes.By comparison,the impeller position-placement was determined as the optimal design scheme and the SLM forming was performed.There is no crack and obvious deformation on the surface of the trial-produced impeller,and no large pores in the inner part.The deviation analysis of the impeller was carried out by using laser scanning,it was found that that the maximum average deviation was 0.106 mm.After annealing,the tensile strength of the test rod can reach 257-264 MPa,and the elongation after fracture is 11％-12％.The simulation of SLM forming process of impeller can provide a useful reference for SLM forming layout and support design of aluminum alloy parts with similar structural characteristics.
关键词
潜水泵叶轮/铝合金/选区激光熔化/摆放与支撑
Key words
submersible pump impeller/aluminum alloy/selective laser melting(SLM)/placement and support
维普
万方数据