摆动参数对aisi316l不锈钢微焊头成形的影响

IF 1.7 4区 工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Laser Applications Pub Date : 2023-09-27 DOI:10.2351/7.0001123
Cledenir Costa de Oliveira, Milton Pereira, Claudio Abilio da Silveira, Manoel Kolling Dutra, Calil Amaral
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引用次数: 0

摘要

本研究考察了在焊接过程中,在aisi316l不锈钢试样上移动时,摆动运动对激光束行为的影响。在配有扫描器和工作台的实验台上,安装了一台400w光纤激光器,将激光束振荡运动叠加在直线运动上。数学模型估计瞬时光束速度值,预测热对焊缝方面的影响。微焊接实验采用横向梁振荡自加工。测试了两种形式的重叠横向摆动:一种具有圆形路径,另一种描述数学符号“无限”。输入参数与微焊结果之间的相关性得到了证明,包括焊珠的渗透和宽度。结果表明,在200 ~ 400 Hz范围内,在圆内和“无限”范围内运动的频率对结果没有显著影响。将摆动幅度从0.5 mm增加到2mm,会显著影响所产生的股的宽度和深度。摆动技术可以有效地防止过程中的不连续,如孔隙率。在300 W, 50 mm/s, 0.5 mm重叠摆动运动和300 Hz圆旋转频率下获得的珠子宽度和深度之间的关系最高。
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Effect of wobble parameters on microwelding bead formation of AISI 316L stainless steel
This study examines the impact of wobble movement on a laser beam’s behavior while moving over an AISI 316L stainless steel sample of 1.2 mm thickness during welding. The laser beam oscillatory movement is superimposed on linear movement, using a 400 W fiber laser installed on an experimental bench equipped with a scanner and worktable. Mathematical modeling estimates instantaneous beam speed values, predicting thermal influence on weld bead aspects. Microwelding experiments use autogenous processing with lateral beam oscillation. Two forms of overlapping transverse wobble are tested: one with a circular path and the other describing the mathematical symbol “infinity.” Correlations are evidenced between the input parameters and results obtained in the microwelds, including penetration and width of the beads. Results show that the frequency of movement in a circle and in “infinity” for frequencies from 200 to 400 Hz has no significant influence on the result. Increasing the amplitude of the wobble movement from 0.5 to 2 mm significantly influences the width and depth of the strands generated. The wobble technique is effective in preventing discontinuities in the process, such as porosities. A bead obtained with 300 W, 50 mm/s, 0.5 mm overlapping wobble movement, and 300 Hz circular rotation frequency showed the highest relationship between width and depth.
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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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