Effects of Process Parameters on Density and Dimensional Accuracy of CuCrZr Alloy by SLM
In order to study the influence of process parameters on the density and dimensional accuracy of CuCrZr alloy samples formed by SLM,a regression equation model was established by using response surface method to analyze the evo-lution law of the main forming process parameters(laser power,scanning speed,and scanning distance)of laser selective melting technology on the density and dimensional accuracy of alloyed CuCrZr powder forming.The results showed that scanning spacing had the greatest impact on density,while scanning speed had the greatest impact on dimensional accuracy.By increasing the laser power,the density first increased and then decreased,which resulted in an increase in size error.By increasing the scanning speed,the density first increased and then decreased,and the size error first decreased and then in-creased.By increasing the scanning spacing,both density and size errors reduced.After optimization,the CuCrZr sample a-chieved a density of 99.102%,with dimensional errors of 0.045 mm in the X and Y directions,and the surface roughness Ra value reached 7.21 μm.
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