Temperature control in friction stir welding

搅拌摩擦焊的温度控制

• 批准号: 259355150
• 负责人: Professor Dr.-Ing. Michael Friedrich Zäh
• 金额: --
• 依托单位: Lehrstuhl für Betriebswissenschaften und Montagetechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/259355150?language=en
• 关键词: Temperature; control; friction; stir; welding

Friction stir welding (FSW) is a solid state joining process producing high weld quality, since the temperature of the material remains below its solidus. Due to this characteristic and the good repeatability FSW has quickly spread in industrial application.The temperature in the weld zone cannot be directly influenced, but results from the chosen process parameters, the tool geometry and other boundary conditions. Yet, the relationship between those independent variables and the weld temperature has been insufficiently in-vestigated. Especially in complex weld tasks changing thermal boundary conditions can affect the weld zone temperature with negative impact on the mechanical joint properties. Thus, controlling the heat input is essential to ensure high weld quality. The aims of the requested research project are to explore the theoretical background and to implement and validate a prototypic control system. Concluding, the main issues can be summarized as: development of a method to determine the weld zone temperature approximately in real-time; development of the process principles regarding the temperature profile in the weld zone; determination of relevant process parameters, which mainly affect the weld zone temperature; implementation of a system for temperature control and demonstration of its functionality in characteristic applications.

搅拌摩擦焊 (FSW) 是一种固态连接工艺，由于材料的温度保持在其固相线以下，因此可产生高焊接质量。由于 FSW 的这一特性和良好的重复性，它在工业应用中迅速普及。焊接区的温度不能直接影响，而是由所选的工艺参数、工具几何形状和其他边界条件决定。然而，这些自变量与焊接温度之间的关系尚未得到充分研究。特别是在复杂的焊接任务中，改变热边界条件可能会影响焊接区温度，从而对机械接头性能产生负面影响。因此，控制热输入对于确保高焊接质量至关重要。所请求的研究项目的目的是探索理论背景并实施和验证原型控制系统。综上所述，主要问题可概括为： 开发一种近似实时确定焊缝区温度的方法；制定有关焊接区温度分布的工艺原理；确定相关工艺参数，主要影响焊缝区温度；实现温度控制系统并在典型应用中演示其功能。

项目成果

Adaptive model-based temperature control in friction stir welding

搅拌摩擦焊中基于自适应模型的温度控制

• DOI: 10.1007/s00170-017-0594-5
• 发表时间: 2017
• 期刊: The International Journal of Advanced Manufacturing Technology
• 作者: Bachmann; A.;Gamper; J.;Krutzlinger; M.;Zens; A.;Zaeh; M. F.
• 通讯作者: M. F.

Torque-based adaptive temperature control in friction stir welding: a feasibility study

搅拌摩擦焊中基于扭矩的自适应温度控制：可行性研究

• DOI: 10.1007/s11740-018-0798-z
• 发表时间: 2018
• 期刊: Production Engineering
• 作者: Bachmann; A.;Roehler; M.;Pieczona; S. J.;Kessler; M.;Zaeh; M. F
• 通讯作者: M. F