Analysis And Application Of Mechanical Properties Of 3D Printing Parts Based On Hips Materials

Additive manufacturing technology is a new type of molding manufacturing technology that has been widely concerned in recent years.Many domestic and foreign scientific research institutions are focusing on the research of additive manufacturing technology.Compared with the traditional manufacturing method,the additive manufacturing technology has the characteristics of no need to develop and design the mold and has strong production processing flexibility,so it is more suitable for manufacturing parts with short production cycle and need to verify the shape.Among the many additive manufacturing technologies,the fused deposition manufacturing(FDM)technology is widely used and researched because of its convenient and easy access to materials,simple machine operation,and good part forming effects.At present,the research on FDM technology mainly covers the deformation of parts during molding,the selection of part forming parameters,the study of mechanical properties of parts and the simulation analysis of part constitutive models.In many research and analysis,the analytical research on the FDM technology is mainly theoretical and experimental.Because the performance of parts manufactured by FDM technology is not stable and the quality of printed test pieces fluctuates,there is less research on the combination of FDM technology and actual production applications.In order to make up for the research content in this aspect.In this paper,based on the FDM technology,the HIPS material is studied.The best mechanical properties print parameters are selected through mechanical properties test and data processing.The parameters obtained are combined with the intake manifold of the automobile.The model of the automobile intake manifold is designed to meet the relevant operating conditions of the automobile,and the data are analyzed by fluid simulation.Firstly,the printing direction,the layer thickness and the air gap are selected as the processing parameters,and the tensile,compression and bending tests are carried out on the parts.The variance analysis method is used to analyze the influence of each processing parameter on the mechanical properties of the FDM technology printing test part.And the influence of the level value of each technological parameter on the mechanical properties of printed specimens.Secondly,the test data of tensile strength,compressive strength and flexural strength are analyzed.The grey relational analysis method is used to analyze the optimal combination of process parameters for comprehensive mechanical properties,and the printed test parts with the best comprehensive mechanical properties are obtained,and the optimal solution within a certain process parameter range is determined.Thirdly,compared with the traditional hot-pressing parts,the difference of mechanical properties between the hot-pressing specimens and FDM parts are analyzed.Preparing a mold related to hot press forming.The tensile strength of the hot press formed part is obtained by the tensile test.Compare it with the tensile strength of the FDM technology printed test parts analyze the difference in performance between the two and the reasons for the difference,in order to make reference for the production preparation of future FDM technology printing parts.Finally,according to the mechanical properties of the materials obtained,the model of the intake manifold is designed.It is hoped that the intake manifold can be fabricated by the FDM technology to meet the internal wall compressive strength under different working conditions.In order to verify the reliability of the design model,hydrodynamic analysis software is used to simulate the internal pressure of intake manifold under different inlet and outlet pressure differences,and the results are compared with the experimental results of materials.