Development and analysis of plasma-assisted laser beam fusion cutting

等离子辅助激光束熔融切割的发展与分析

• 批准号: 449582007
• 负责人: Professor Dr.-Ing. Uwe Füssel
• 金额: --
• 依托单位: Institut für Werkstoffwissenschaft
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/449582007?language=en
• 关键词: Development; analysis; plasma; assisted; laser

Within the framework of the planned research project, a novel laser-based cutting process (plasma-assisted laser beam cutting) for cutting metallic materials (ferrous and non-ferrous metals) will be comprehensively and methodically investigated for the first time and tested with regard to the achievable process advantages compared to conventional cutting processes. A characteristic feature of the addressed hybrid process is the combination of a laser beam and a coaxially guided plasma jet, whereby the energy transfer and the material removal are decoupled by use of a non-transferred arc. The aim is to combine the advantages of a focused laser beam for generating narrow cut kerfs with almost parallel cutting edges in a synergetic manner with the advantages of plasma cutting in terms of low cutting edge roughness, cuttable material thicknesses and moderate gas consumption. The work planned for the required qualification of the approach includes design studies for the most efficient formation and guidance of the plasma jet, extensive experimental studies on resulting parameter dependencies as well as model developments and simulations for a profound theoretical understanding of the process characteristics. As a result of the research, a potentially highly efficient and innovative hybrid process with improved processing quality and reduced manufacturing effort compared to the established individual thermal cutting processes of laser beam cutting and plasma cutting is expected.

在计划的研究项目框架内，将首次全面、系统地研究一种用于切割金属材料（黑色金属和有色金属）的新型激光切割工艺（等离子体辅助激光束切割），并在以下方面进行测试与传统切割工艺相比可实现的工艺优势。所提出的混合工艺的一个特征是激光束和同轴引导等离子射流的组合，从而通过使用非转移电弧将能量转移和材料去除分离。其目的是以协同方式将聚焦激光束用于生成具有几乎平行切割边缘的窄切割切口的优点与等离子切割在低切割边缘粗糙度、可切割材料厚度和适度气体消耗方面的优点结合起来。为该方法所需的资格而计划的工作包括最有效地形成和引导等离子体射流的设计研究、对所得参数依赖性的广泛实验研究以及模型开发和模拟以对过程特性进行深刻的理论理解。研究结果表明，与已建立的激光束切割和等离子切割等单独热切割工艺相比，预计将出现一种高效、创新的混合工艺，该工艺可提高加工质量并减少制造工作量。