Using fiber or rod—The influence of different filler materials during CO2 laser welding of quartz glass

IF 1.7 4区 工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Michael Desens, Katharina Rettschlag, Peter Jäschke, Stefan Kaierle
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引用次数: 0

Abstract

Welding of quartz glass is still mainly carried out with gas torches and manually by glass specialists. The use of gas torches is highly energy inefficient as much heat energy is released around the component and into the environment. In addition, the manual process can result in inhomogeneous welds. An automated laser process would make quartz glass welding more energy-efficient and repeatable and address the growing shortage of skilled labor. In this study, quartz glass plates up to 4.5 mm in thickness are welded together at an angle of 125° to each other using a fiber or rod as the filler material. Glass thickness and angle were selected based on a project-specific application. The aim is to achieve a homogeneous weld with as few defects as possible using a lateral fiber- or rod-based deposition welding process. The main challenge is to achieve the melting of the filler material at the bottom contact point of the two glasses so that no air inclusions occur. A 400 μm fiber and a 1 mm rod are investigated as filler materials. The advantage of the fiber compared to the rod is that the contact point of the glasses is easier to reach and bond during the welding process. Due to the large gap between the glass fibers compared to the fiber diameter, a high fiber feed rate is required to fill the V-gap with the viscous glass material. The disadvantage is that the fiber is subjected to high pressure when digging into the melt, which can lead to fiber breakage. In addition, there is a high consumption of filling material. Adjustable and relevant process parameters include the ratio between substrate and fiber feed, the laser power, the spot diameter, and the process gas pressure. The fabricated samples are analyzed using optical and laser confocal microscopy.
采用光纤或棒材——不同填充材料对石英玻璃CO2激光焊接的影响
石英玻璃的焊接仍然主要是用气枪和玻璃专家手工进行的。使用燃气火炬是高度能源效率低下的,因为许多热能被释放到组件周围并进入环境。此外,手工工艺可能导致焊缝不均匀。自动化激光工艺将使石英玻璃焊接更加节能和可重复,并解决熟练劳动力日益短缺的问题。在这项研究中,使用纤维或棒作为填充材料,将厚度达4.5 mm的石英玻璃板以125°的角度焊接在一起。玻璃的厚度和角度是根据项目的具体应用来选择的。目的是实现均匀焊接,尽可能少的缺陷,使用横向纤维或棒状沉积焊接工艺。主要的挑战是在两个玻璃的底部接触点实现填充材料的熔化,以使没有空气夹杂物发生。研究了400 μm纤维和1mm棒作为填充材料。与棒相比,纤维的优点是在焊接过程中更容易到达和粘合玻璃的接触点。由于玻璃纤维之间的间隙与纤维直径相比较大,因此需要较高的纤维进给速率来用粘性玻璃材料填充v型间隙。缺点是纤维在挖掘熔体时受到高压,这可能导致纤维断裂。此外,填充材料的消耗也很高。可调的和相关的工艺参数包括基材与光纤进给比、激光功率、光斑直径和工艺气体压力。利用光学共聚焦显微镜和激光共聚焦显微镜对制备的样品进行了分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
3.60
自引率
9.50%
发文量
125
审稿时长
>12 weeks
期刊介绍: The Journal of Laser Applications (JLA) is the scientific platform of the Laser Institute of America (LIA) and is published in cooperation with AIP Publishing. The high-quality articles cover a broad range from fundamental and applied research and development to industrial applications. Therefore, JLA is a reflection of the state-of-R&D in photonic production, sensing and measurement as well as Laser safety. The following international and well known first-class scientists serve as allocated Editors in 9 new categories: High Precision Materials Processing with Ultrafast Lasers Laser Additive Manufacturing High Power Materials Processing with High Brightness Lasers Emerging Applications of Laser Technologies in High-performance/Multi-function Materials and Structures Surface Modification Lasers in Nanomanufacturing / Nanophotonics & Thin Film Technology Spectroscopy / Imaging / Diagnostics / Measurements Laser Systems and Markets Medical Applications & Safety Thermal Transportation Nanomaterials and Nanoprocessing Laser applications in Microelectronics.
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