Joining of blanks with electrochemical support (ECUF)

使用电化学支撑 (ECUF) 连接毛坯

• 批准号: 227635593
• 负责人: Professor Dr.-Ing. Guido Grundmeier
• 金额: --
• 依托单位: Institut für Umformtechnik und Leichtbau (IUL)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/227635593?language=en
• 关键词: Joining; blanks; electrochemical; support; ECUF

This research project investigates the cold pressure welding of similar and dissimilar metals by incremental forming and inline electrochemical surface activation. The project intends to identify and analyse the mechanisms of cold pressure welding in order to improve current cold welding processes in terms of process flexibility and joint strength. Joining with electrochemical support (EUCF) is a new process intended for the cold pressure welding of a broad range of metal pairs. Major innovations include the specified modification of the micro- and macroscopic surface structure, such as through inline activation of metallic and polymeric surfaces by means of electrochemical reactions (including oxide reduction and metal layer deposition). The course and result of the subsequent pressure welding pro-cess is supported by a special tool setup and an adapted incremental process control to ensure a sufficient bonding process, with locally restricted high deformation ratios. The pressure welding process will be realized by robotic actuators and an incremental process control to allow both partial and full joining of hybrid products/assemblies made up of various semi-finished parts. The proposal aims to achieve a deeper understanding of the micro- and macroscopic processes involved in electrochemical inline activation and the mechanical joint induced by incremental forming. Interdisciplinary basic research is pro-posed to address the interacting aspects of forming, electrochemistry and material science and attain the aspired result. A technological basis is to be created for the subsequent industrial use of joining by forming with electrochemical support for the case of sheet metal. This community application also promotes a universal knowledge gain for each of the participating groups within their field of research. Hence, each individual process step, such as mechanical or chemical preparation, the handling of the semi-finished parts and the joining process proper will be investigated in detail. Metallographic analysis will be performed, and this is necessary for carefully characterizing the resulting joint in terms of solid bonding, application performance and also strength and durability.

该研究项目研究通过渐进成形和在线电化学表面活化对相似和异种金属进行冷压焊接。该项目旨在识别和分析冷压焊的机理，以便在工艺灵活性和接头强度方面改进当前的冷焊工艺。电化学支撑连接 (EUCF) 是一种新工艺，旨在用于各种金属对的冷压焊接。主要创新包括对微观和宏观表面结构的特定修改，例如通过电化学反应（包括氧化物还原和金属层沉积）在线激活金属和聚合物表面。随后的压力焊接过程的过程和结果由特殊的工具设置和适当的增量过程控制支持，以确保充分的粘合过程，并具有局部限制的高变形率。压力焊接过程将通过机器人执行器和增量过程控制来实现，以允许部分和完全连接由各种半成品零件组成的混合产品/组件。该提案旨在更深入地了解电化学在线激活和渐进成型引起的机械接头所涉及的微观和宏观过程。跨学科基础研究旨在解决成形、电化学和材料科学的相互作用，并获得预期的结果。为金属板材外壳电化学支撑成型连接的后续工业应用奠定技术基础。该社区应用程序还促进每个参与小组在其研究领域内获得普遍的知识。因此，每个单独的工艺步骤，例如机械或化学准备、半成品部件的处理以及适当的连接工艺都将被详细研究。将进行金相分析，这对于仔细表征所得接头的牢固粘合、应用性能以及强度和耐久性是必要的。