Research On The Forming Mechanism And Process Of 3D-Printing

Three Dimensional Printing(3D-Printing) is one of the most viable the rapid prototyping technology, suit to new products development in the field of home appliances, office basics, architecture and medical models etc.. As a kind of economic-rapid prototyping technology, it is of low-cost, high reliability, compact equipment, smaller noise and fast forming speed etc. And it also can make a part in different materials and colors. It has an enormous application potential and broad market prospects. Therefore, the Research on the forming mechanism and Process of 3D- Printing is of important practical significant.In the dissertation, droplets formation, interactions between droplets and medium surface are analyzed. The impact, powder spreading, wetting and penetration are systemically discussed, which provide references for structure design, materials selection and determining of manufacturing parameters.The performances of part made in 3D-Printing are mainly affected by the process parameters in forming besides materials. These parameters include: gap between nozzle to work surface, the thickness of formed layer, deposited speed, roll motion parameters, and interval time of forming on each layer. In order to improve the accuracy, the test is designed by Orthodoxy method, the process parameters is optimized, and the experiment results are analyzed using variance analysis,and then main affecting factor for the performances of a part is the thickness of formed layer. the optimum process parameters are obtained by profile analysis and. The performances of a part increases as the thickness of formed layer increases.