Influence of wire electrode coatings on mechanical-technological weld seam and GMA-pocess properties

焊丝涂层对机械技术焊缝和 GMA 工艺性能的影响

• 批准号: 393234340
• 负责人: Professor Dr.-Ing. Volker Wesling
• 金额: --
• 依托单位: Institut für Schweißtechnik und Trennende Fertigungsverfahren
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/393234340?language=en
• 关键词: Influence; wire; electrode; coatings; mechanical

The increased use of high and ultra high strength steels in many areas of technology, among other things Offshore structures, automotive and general steel construction, the urge to grow a deeper understanding of welding processes in order to use their potentials completely. Currently, much research in the field of process engineering, process automation and process control is done; little attention is paid to solid wire electrodes for gas metal arc welding. The research project will focus, starting from the assumption that thin film layers of different metallic and non-metallic elements to solid wire electrodes can change the mechanical and technological properties of the weld metal and the welding process (penetration behavior, material transfer and arcing) significantly, this part of the field of welding. The influences of different layer systems will be characterized. The arc stability, the droplet transfer and the combustion behavior of the wire electrode and the element distribution in the droplet and the weld in addition to the static, cyclic and dynamic mechanical properties of the weld seam are the focus of the investigations. Based on preliminary studies, it is expected that a significant change in the process behavior and the mechanical properties can be achieved by the coating. In the last step of the research project demonstration coating systems will be derived with greatly increased targeted properties (arc stability / finer droplet transfer, strength, toughness) and their predicted properties will be verified. The research project will contribute a significant part in the understanding of arc welding processes.

高强度和超高强度钢在许多技术领域的使用越来越多，其中包括海洋结构，汽车和一般钢结构，迫切需要对焊接工艺有更深入的了解，以便充分利用其潜力。目前，在过程工程、过程自动化和过程控制领域进行了大量的研究，而对用于气体保护金属极电弧焊的实芯焊丝电极的关注很少。该研究项目将集中，从假设不同的金属和非金属元素的薄膜层固体焊丝电极可以改变焊接金属和焊接过程（渗透行为，材料转移和电弧）的机械和技术性能显着，这部分领域的焊接。不同层系的影响将被表征。电弧稳定性、熔滴过渡、焊丝燃烧行为、熔滴和焊缝中的元素分布以及焊缝的静态、循环和动态力学性能是研究的重点。基于初步研究，预计涂层可以实现工艺行为和机械性能的显著变化。在研究项目演示的最后一步，将获得具有大幅提高的目标性能（电弧稳定性/更精细的熔滴过渡，强度，韧性）的涂层系统，并验证其预测性能。该研究项目将有助于对弧焊工艺的理解的重要组成部分。