高速列车轴装制动盘盘毂精密成形仿真分析

Simulation Analysis of Precision Forming for Axle-mounted Brake Disc Hub of High-speed Train

应用Deform-3D软件数值模拟研究连皮不同位置、最小厚度、斜度、过渡圆角等对高速列车盘毂精密成形的影响。结果表明:连皮位置h从75 mm增加到85 mm时,终锻时的变形力逐渐增加;当h=85 mm时,薄壁毂上下端面的充填效果最好。连皮最小厚度h″从8 mm增加到11 mm时,终锻时的变形力逐渐减小。连皮斜度α从3°增加到5°时,终锻时的变形力逐渐减小;连皮过渡圆角R从20 mm增加到30 mm时,终锻时的变形力才有所减小;预制坯高度从90 mm增加到96 mm时,终锻时的变形力、锻件本体的最大等效应力逐渐减小。

The influence of wad different positions,minimum thicknesses,slopes and transition fillets on the precision forming of high-speed train disk hub was studied by using Deform-3D software.The results show that when the wad position h is increased from 75 mm to 85 mm,the deformation force of final forging increases gradually.When the value of h is 85 mm,the filling effect of the upper and lower end faces of the thin-walled hub is the best.When the minimum thickness of wad h″increases from 8 mm to 11 mm,the deformation force of final forging decreases gradually.When the wad slopeαincreases from 3°to 5°,the deformation force of final forging decreases gradually when the transition fillet of the wad R increases from 20 mm to 30 mm,the deformation force of final forging reduces.When the height of the preform increases from 90 mm to 96 mm,deformation force of final forging and the maximum equivalent stress of the forging body decrease gradually.