| Abstract Scope |
In the previous study, the low temperature laser sintering, which allows the powder bed temperature during process to be lower than the recrystallization temperature, has achieved improvement of material recycle rate and processing of high-performance plastics using non-high temperature resistant machine.
To obtain the desired shape, it is necessary to correct the input shape data, but since the shrinkage process in low temperature laser sintering is different from normal laser sintering, the shape correction method used in normal laser sintering is not applicable. The goal of this study is construction of shape correction method for low temperature laser sintering. As the first step, fundamental phenomenon of shrinkage in low temperature process was investigated. As a result, it was indicated that scan direction, scan length, and build height affected shape, due to differences in shrinkage units and accumulation of deformation. These results are basic information for understanding the shrinkage mechanism. |