The Process Parameter Studies Of The Forming Process For Magnesium Alloy Conical Parts Inner Ring Ribs

Integration and lightweight weaponry is the inevitable trend of development, and themagnesium alloy is one of the best selections. The addition of rare earth improves themechanical properties of magnesium alloy. Also it is a typical realization of integration,lightweight. So the research of Magnesium alloy cone shell with inner ribs is a greatsignificance. Currently, the methods of forming such parts are still dominated by mechanicalprocessing and casting. But the product mixed seriously, and poor mechanical properties areinevitable. The new technology of magnesium alloy cylindrical member has some progressalso, but only for forming thin-walled, small diameter, shallow ribs class members. It isdifficult to meet the requirements of the development of modern weaponry.Firstly, this article is aiming at the research of the whole plastic deformation ofMg-13Gd-4Y-2Zn-0.6Zr magnesium alloy inner tendon shell. With thermal simulationcompression test, we studied the behavior of metals under different deformation parameters.In the experiment, the temperature is300°C to480°C, and the strain rate is0.001~0.5s-1.Then, we established the constitutive equation of magnesium alloy by Fields-Backofen (FB)correction model, and established the thermal processing’s X-Y scheme ofMg-13Gd-4Y-2Zn-0.6Zr by the dynamic material model, which has important significance tothe later numerical simulation.Secondly, proposed by the wedge loaded radial extrusion ring bars forming process,based on the virtual orthogonal experiment with different influencing factors (formingtemperature, extrusion speed, radius of the mold) to simulate the forming process, accordingto the simulation results, range analysis, optimum combination of parameters. As well as theaverage strain forming load factors on the impact of primary and secondary relationship. Andthen we test the results performed under optimum combination forming load, equivalent strain, metal flow analysis.Finally, we do the experiment by the optimal parameters of the simulation, which issupported to the lightweight of equipment.