The Molding Technology Research Of Aluminum Alloy Blades

The Aluminum alloy blades which is researched in this paper is the important parts of a product, the appearance shape of this parts is quite simple, the size accuracy requirement is high and the performance have certain requirements. For these parts, it currently has been mading by the way of a certain thickness plank is directly machine cutted processing. In addition,the manufacturing way of the aluminum profile extrusion also commonly used, cutting out the two convex platform of the parts after the hot extrusion of the aluminum alloy plank namely. The material,energy consumption are of These two kinds of manufacturing methods are big,and the production cost of These two kinds of manufacturing methods is high, so it not only does not meet the development requirements of energy saving,but aslo difficult to meet the performance requirements. To solve these problems, The"isothermal extrusion"method to the aluminum alloy blades was researched.Forming process were analyzed according to the structure characteristics of parts. Using the software DEFORM that is three-dimensional finite element numerical simulation, analyzed the metal flow pattern of the isothermal extrusion process after the simplified model is established. Firstly, discussed the influence of concave die for parts forming with the flash cave or without the flash cave, meanwhile, simulated extrusion situation of the blank with different shape and the different location of the blank put in the concave die. On this basis, analyzed the metal flow,equivalent stress and the change of Load - time curves of the extrusion process, sure the heating temperature of the extrusion of blank is 480℃,the temperature mould preheating is 450℃,the friction coefficient is 0.25,the punch running speed of 5 mm/s.According to the above results, the extrusion mould was designed and the experimental reseach was carried on. The result showed that: developed process plan was feasible,designed mould was appropriately applied,metal flow was uniform, and product precision and performance all meet the technical requirements, the tensile strength can achieve 480Mpa, which laid the foundation for engineering applications of the similar parts.