Optimization of selective laser melting AlSi10Mg arch lattice forming process
A mathematical model based on response surface experiments was established to correlate the process parameters of selective laser melting forming with the pore error and density of the arch lattice;analysis was conducted of the influence of process parameters on the forming quality of the structure,and the process was optimized to obtain an internal dense and externally well-formed process parameter combination.Results show that the scanning spacing and laser power are the most significant factors affecting the structure's pore error and density.The optimized process combination for forming quality is as follows:laser power 292 W,scanning speed 1 095 mm/s,and scanning spacing 0.10 mm.The resulted arch lattice pore error and den-sity after optimization are 0.65%and 99.20%respectively,with an error within 5%of the predicted values,demonstrating the high prediction accuracy of the established model and its effective capability for precise pre-diction and control of the forming quality of the arch lattice.
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