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采用Deform-3D有限元数值模拟软件对轮毂法兰盘热锻成形进行数值模拟,并对初定成形工艺方案进行分析,确定了预锻+终锻成形方案。针对工件表面应力较大、模具磨损较为严重的问题,通过田口试验优化法对成形参数进行优化组合。模拟结果表明,当轮毂法兰变形温度为1200℃、模具温度为230℃、变形速率为1.0 mm·s~(-1)、摩擦系数为0.05时,工件应力、模具载荷和模具磨损能有效降低,且工件成形质量较优。各参数对零件质量和模具磨损的影响程度依次为:摩擦系数>变形速率>变形温度>模具温度。
Deform-3D finite element numerical simulation software was used to simulate the hot forging of the hub flange. The preliminary forming process was analyzed and the program of the forging + final forging was confirmed. Aiming at the problem of large stress on workpiece surface and severe mold wear, Taguchi test optimization method is used to optimize the forming parameters. The simulation results show that the workpiece stress, the die load and the die wear can be effectively reduced when the deformation temperature of the hub flange is 1200 ℃, the die temperature is 230 ℃, the deformation rate is 1.0 mm · s -1 and the friction coefficient is 0.05 , And the workpiece forming quality is better. The influence of each parameter on the part quality and the wear of the mold are as follows: friction coefficient> deformation rate> deformation temperature> mold temperature.