The Molding Technology Study Of Rare Earth Magnesium Alloy Of Variable Wall Thickness Blade

The rare earth magnesium alloy blade which is researched in this paper is the importantpart of a product and its shape is quite complex, with very high requirement for the sizeaccuracy, room temperature and high-temperature performance. For the special serviceenvironment of the parts, combined with the requirements of lightweight, this paper uses theMg-13Gd-4Y-2Zn-0.6Zr magnesium alloy as raw material.For these parts, the current domestic method is processing and manufacturing thepre-strained sheet metal directly. This manufacturing method causes large energyconsumption and high production cost. At the same time, it is hard to meet the propertyrequirements of the products. So we apply the extrusion forming methods to process themagnesium alloy blade in this paper. In addition, considering the thickness of the blade wallis changing, the raw materials needs to be pre-deformed by multidirectional forging before thefinal deformation. The structure of the raw materials is refined after the processing ofpre-deformation which ensures the structure and properties in different parts of the blade arealmost uniformity.According to the structure characteristics of the parts, the forming process was analyzedand extrusion part drawing was determined. And using the Deform-3D finite elementnumerical simulation software, the blade extrusion process of a number of key technicalissues was simulated. By numerical simulation, we obtained the reasonable die structureparameters and optimized the mold structure. The extrusion process of angle-shaped profile ofmagnesium alloys blade was simulated by using finite element analysis software. With theorthogonal experimental method, different extrusion temperature、extrusion speed and frictioncoefficient were optimized. On the basis of the above optimization, we analyzed the law ofmetal flow in the process of extrusion、after forming blade equivalent strain distribution anddie wear. According to the above results, the extrusion mould was designed and the experimentalresearch was carried on. The forming component that meets the property and dimensionalrequirements were designed. Through the study of blade extrusion process, finite elementnumerical simulation analysis and actual production were closely integrated. It has shortenedthe product development cycle effectively, improved the comprehensive performance ofparts、achieved the purpose of improving material utilization and reducing costs. Theresearch provides the basis of theory and practice for the production and the extrusion diedesign of similar parts.