权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Fundamental research on a double beam laser process for metals

双束激光金属加工基础研究

基本信息

批准号：
370349951
负责人：
Professor Dr.-Ing. Thomas Bergs, since 7/2019
金额：
--
依托单位：
Werkzeugmaschinenlabor - WZL
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2017
资助国家：
德国
起止时间：
2016-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/370349951?language=en
关键词：
Fundamental research double beam laser

项目摘要

The present project proposal aims on the enhancement of process understanding of a special double-beam laser process by means of fundamental investigations. The process is defined by simultaneous usage of two laser sources emitting significantly different laser radiation which initiate different physical sub-processes within the process zone. The process itself could be successfully applied on laser brazing of aluminum alloys as well as aluminum steel pairings. From these former works a process explaining model could be derived - this model however contains several open questions. Main objective of the proposed work thus is to close these gaps of knowledge in order to supply a comprehensive process model which inhibits particularly the mutual interactions of the physical sub-processes. Therefore separate process investigations will be conducted for each sub-process, which are: the temperature field, which forms in the laser irradiated zone, the induced thermos-chemical reactions at the 3-phase-border as well as the wetting and spreading behavior of the molten filler material. As main outcome the technique can thus be made applicable for brazing of various materials and material pairing. In addition the technique can be applied to wire based laser deposition welding, in terms that current process technological obstacle can be overcome.

本项目提案旨在通过基础研究增强对特殊双光束激光工艺的工艺理解。该过程是通过同时使用两个激光源来定义的，两个激光源发射明显不同的激光辐射，从而在加工区域内启动不同的物理子过程。该工艺本身可以成功应用于铝合金以及铝钢配对的激光钎焊。从这些以前的作品中可以得出一个过程解释模型 - 然而这个模型包含几个悬而未决的问题。因此，拟议工作的主要目标是弥合这些知识差距，以提供一个全面的过程模型，特别抑制物理子过程的相互相互作用。因此，将对每个子过程进行单独的过程研究，这些子过程是：激光照射区域中形成的温度场、三相边界处诱发的热化学反应以及熔融填充材料的润湿和铺展行为。作为主要成果，该技术可适用于各种材料和材料配对的钎焊。此外，该技术还可应用于线基激光沉积焊接，克服目前的工艺技术障碍。