论文部分内容阅读
针对镁合金高内环筋厚壁壳体构件旋压技术无法成形制造的现状,提出一种内环筋斜楔加载的挤压成形方法。应用Deform-3D软件对AZ80镁合金厚壁锥壳构件内环筋挤压成形金属充填规律进行了有限元模拟研究。主要分析了成形过程中内环筋部位金属的充填行为和等效应变分布规律,研究了模具圆角半径和倾斜角对金属流动规律的影响。模拟结果表明:模具圆角半径的增大对筋部的充填有促进作用;在模具圆角半径一定的情况下,随着模具倾斜角的减小,筋部成形质量变好,筋部等效应变分布均匀。最后通过实验试制,获得合格的内环筋,验证了新工艺的可行性。
Aimed at the current situation that the technology of forming the high-inner ring thick-walled thick-walled case of magnesium alloy can not be formed by spinning, a method of extrusion forming with the inner ring rib inclined wedge loading is proposed. The Deform-3D software was used to simulate the filling process of inner ring ribs in AZ80 magnesium alloy thick walled conical shell. The filling behavior and equivalent strain distribution of the inner ring tendons in the forming process are mainly analyzed. The influence of the radius and tilt angle of the die on the flow of the metal is studied. The simulation results show that the increase of the fillet radius of the mold can promote the filling of the tendons. With the constant radius of the mold, the forming quality of the tendons becomes better with the decrease of the inclination angle of the mold, Variable distribution of uniform. Finally through the experimental trial system, access to the qualified inner ring rib, verify the feasibility of the new technology.