Optimization of Surface Quality of Molten Deposition Parts Based on Grey Correlation Analysis
To improve the surface quality of FDM printed parts,multi-objective optimization was carried out on the printed parts based on the grey correlation model.Selecting printing layer thickness,print height,substrate temperature,nozzle temperature,and printing speed as research factors,in order to obtain the overall optimal warpage,Z-direction size shrinkage,and volume shrinkage,a five factor mixed level or-thogonal experiment was designed.The experimental results showed that the trend of Z-direction size shrinkage and overall shrinkage is inconsistent,and the shrinkage in a certain direction of the printed piece can be reduced by changing the placement position of the printed piece.When the size of the prin-ted piece in the Z direction is small,the warping deformation and shrinkage are both large.When the printing layer thickness is 0.28 mm,the height of the printed piece is high,the nozzle temperature is 210℃,the substrate temperature is 55 ℃,and the printing speed is 30 mm·s-1,the printed piece has high surface quality.The experimental results will provide data support for improving the printing quality of PLA components.
万方数据
维普
