Process combination of combined deep drawing and cold forging

深冲与冷锻联合工艺组合

• 批准号: 289596321
• 负责人: Professor Dr.-Ing. A. Erman Tekkaya
• 金额: --
• 依托单位: Institut für Umformtechnik und Leichtbau (IUL)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/289596321?language=en
• 关键词: Process; combination; combined; deep; drawing

In the first funding period, it was shown that the process of combined deep-drawing and cold forging can be used to produce hybrid shafts, consisting of a lightweight core and a high strength steel shell.The goals of the second funding period is the adaptation of the process in order to increase the possible component spectrum, as well as to increase the bond quality between the composite partners. The usage of perforated circular sheets is supposed to link the processes of hole expansion and forward extrusion, in order to enable coating of arbitrary shaft regions. In addition to this, multi-stage deep-drawing is used to produce shafts that are covered with a high strength steel over its complete length. In order to increase the resulting bond strengths in the basic process as well as its variations, the application of a counter-pressure is investigated in order to further enlarge the process window.A variation of the material combinations is investigated in order to further increase the lightweight potential (e. g. magnesium as a core material). Due to the hexagonal lattice structure, magnesium and its alloys are difficult to form. In this regard it will be investigated to what extent the hydrostatic pressure resulting from the surrounding high strength shell will help in the joint forming process. Lastly, new features are investigated by combination of new material combinations, e. g. the use of copper as a steel shell for increasing the electrical conductivity.

在第一个资助期中，研究表明，深拉和冷锻相结合的工艺可用于生产混合轴，由轻质芯和高强度钢壳组成。第二个资助期的目标是适应过程的目的是为了增加可能的组件范围，以及提高复合材料伙伴之间的粘合质量。穿孔圆形片材的使用被认为是将扩孔和向前挤压的过程联系起来，以便能够对任意轴区域进行涂层。除此之外，还采用多级深冲来生产在整个长度上覆盖有高强度钢的轴。为了增加基本工艺及其变化中产生的粘合强度，研究了反压力的应用，以进一步扩大工艺窗口。研究了材料组合的变化，以进一步增加轻量化潜力（例如镁作为核心材料）。由于镁及其合金具有六方晶格结构，成型困难。在这方面，我们将研究周围高强度壳体产生的静水压力在多大程度上有助于接头形成过程。最后，通过新材料组合的组合来研究新功能，例如。 g。使用铜作为钢壳以增加导电性。

项目成果

Extending the potentials of draw-forging

扩大拉锻的潜力

• DOI: 10.1007/s12289-022-01662-y
• 发表时间: 2022
• 期刊: International Journal of Material Forming
• 影响因子: 2.4
• 作者: Rakshit; T.; Gebhard; J.; Napierala; O.; Kolpak; F.; Schulze; A.; Tekkaya; A. E.
• 通讯作者: A. E.