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首页> 外文期刊>Journal of Materials Processing Technology >FEM simulation of the flat-die preform forging of steel shaft-disc type components by thermal differential heating
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FEM simulation of the flat-die preform forging of steel shaft-disc type components by thermal differential heating

机译：热差加热法对钢轴圆盘型零件扁模预锻件的有限元模拟

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摘要

The manufacturing of shaft-disc type components by the assembling of separately produced shafts and discs together is rather time consuming and costly. The application of the flat-die thermal differential forging process can produce the preform shape for this type of component. Using coupled thermal-viscoplastic FEM, a simulation study for the preforming of steel shaft-disc type components by the flat-die thermal differential forging process is conducted. The results show that: (i) the achievement of the anticipated profiles requires the suitable control of large temperature gradients in the billet; (ii) the desirable large temperature gradients can be obtained by a suitable combination of heat capacitors and the assignment of power; (iii) the temperature distributions in a billet significantly influence the metal flow in high speed forging; (iv) the metal flow in low speed forging is affected by both the temperature distributions and the condition of continuous in situ heating.
机译：通过将单独生产的轴和盘组装在一起来制造轴盘型部件相当耗时且昂贵。平板模热差分锻造工艺的应用可以为这种类型的组件产生预成型坯形状。利用耦合的热粘塑性有限元方法，进行了平模热差锻工艺对钢轴圆盘型零件的预成型的仿真研究。结果表明：（i）预期轮廓的实现要求对坯料中的大温度梯度进行适当的控制; （ii）可以通过适当组合热电容器和功率分配来获得理想的大温度梯度; （iii）坯料中的温度分布显着影响高速锻造中的金属流动; （iv）低速锻造中的金属流动受温度分布和连续原位加热条件的影响。

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