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温压是一种可将增高密度与选择高使用性能材料相结合的技术。增高密度有助于提高零件的力学性能,以及整体使用性能。将密度增高与高使用性能相结合,可使制造的零件的使用性能超过相应的铸锻材料产品,同时可制成具有最终形的零件,从而显著减低生产成本。因此,自动变速器的涡轮毂就成为了温压的一个理想对象。这篇论文将评述,将用于高扭矩自动变速器的常规锻件切削加工的涡轮毂转换为用一次压制/一次烧结制造的粉末冶金涡轮毂。粉末冶金涡轮毂使用的材料是FD-0405。在试验室对这种扩散合金化材料进行了评价,和报告了几个密度水平的力学性能。温压可使高应力的内花键区全面达到高密度。为了证明粉末冶金零件的适用性,进行了广泛的力学与零件的特定试验。
Temperature pressing is a technology that combines increased density with the choice of high-performance materials. Increasing the density helps improve the mechanical properties of the part, as well as the overall performance. The combination of increased density and high serviceability enables the manufactured parts to outperform the corresponding cast-for-wrought products while providing the final shape with significantly lower production costs. Therefore, the automatic transmission turbine hub has become an ideal target temperature and pressure. This paper will review the conversion of a conventional forgable turbine hub for a high torque automatic transmission to a powder metallurgy turbine hub made by one-shot / one-shot sintering. Powder metallurgy turbine hub using the material is FD-0405. This diffusion alloyed material was evaluated in the laboratory and several mechanical properties at the density level were reported. Thermo-compression allows highly stressed internal spline areas to reach full density. In order to prove the suitability of powder metallurgy parts, a wide range of mechanics and parts specific tests were conducted.