Low-carbon Design And Research Of Typical Forming Process In Sheet Metal

The development of manufacturing is facing the problems of the global shortage ofenergy and the environmental pollution, so the implementation of low-carbondevelopment strategy is the consensus of all countries of the world. Nowadays,low-carbon and energy saving research in manufacturing has become the new hot spot.in manufacturing industries. Especially the automotive industry, sheet metal formingprocess occupies a pivotal position in its manufacturing processes. Therefore, stampingindustry, also should assume the responsibility of energy conservation and emissionsreduction. Currently, the research on carbon emissions problem in sheet metal formingprocess is a relatively small case. In this paper, we take some typical sheet metalforming processes (bending, deep drawing) as the research objects. The study aims tobuild the relationship between process parameters and carbon emissions, find the majorfactors which impact on carbon emissions and reduce the energy consumption and thecarbon emissions created through the forming processess. Rely on these studies, wehope to provide some guidance for the low-carbon processes. The results of this papermainly include：1.The carbon emission model of U-shaped bending process has been established, andthe accuracy of the model has been verified by finite element simulations. We used theestablished model combined with finite element simulation to analyze blank holderforce, friction and mould parameters, and drew a conclusion of the influences ofdifferent process parameters on the bending process energy consumption, finally putforward a method to reduce the carbon emissions of bending process.2.The theoretical carbon emission model of the hemispherical drawing process wasestablished, and the accuracy of the model has been verified by finite elementsimulations. We used the100T VBHF hydraulic drawing machine to do the201stainless steel hemispherical drawing experiments, and measured the press data bysensors installed on the mold. The trend of the energy consumption curves gained by thetheoretical model and he results of experiments are in good agreements, and theapplicability of the theoretical model has been proved. Under the premise of theassurance of hemispherical forming quality, the low carbon emissions aim has beenachieved by using the optimized drawing parameters.3.Using the response surface experimental design method, the energy consumption datum of emispherical drawing process on the hydraulic machine have been measuredby the AWS2103power analyzer. We analyzed the datum gained by the power analyzerand obtained the relationship between the process parameters and the equipment energyconsumption. Combined the energy consumption model derived by the forming processitself, the method of low carbon emissions through sheet forming process has beenproposed.