Study of correlation between edge roughness and gas flow characteristics in laser beam fusion cutting
Study of correlation between edge roughness and gas flow characteristics in laser beam fusion cutting
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激光束熔化切割边缘粗糙度与气体流动特性相关性研究
DOI：
10.1016/j.procir.2018.08.167
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
E. Beyer
中科院分区：
文献类型：
--
作者：
M. Borkmann;A. Mahrle;E. Beyer
对厚度为10 mm的AISI 304不锈钢板进行了光纤激光熔融切割试验，旨在进一步了解切割边缘上的条纹形成过程。该研究基于析因实验设计（DoE）方法，考虑激光功率、焦平面位置、气体压力、喷嘴间距和喷嘴直径作为控制因素。分析的响应包括可实现的切割速度、切割切口几何形状和切割边缘粗糙度。此外，数值模拟的切割气体流动进行了调整的切口的几何形状和气体参数。这些结果的评价揭示了实验粗糙度值和数值计算的后向剪切应力分量之间的强相关性切割前和切割边缘表面之间的过渡区。这一发现支持的假设，即边界层区域的特定特性的切割气体流影响的结构和粗糙度的切割边缘。
Fiber laser fusion cutting trials on AISI 304 stainless steel sheets of 10 mm thickness were performed with the aim to gain further insights into the striation formation process on cut edges. The study is based on a factorial Design-of-Experiment (DoE) approach with consideration of laser power, focal plane position, gas pressure, nozzle stand-off and nozzle diameter as control factors. Analyzed responses include the achievable cutting speed, the cut kerf geometry and the cut edge roughness. In addition, numerical simulations of the cutting gas flow were carried out for adapted kerf geometries and gas parameters. The evaluation of these results reveals strong correlations between experimental roughness values and the numerically computed rear-directed shear stress component within the transition zone between cutting front and cut edge surface. This finding supports the hypothesis that the particular characteristics of the boundary layer zone of the cutting gas flow affects the structure and roughness of cut edges.
影响因子：
5
作者：
Kovalev, O. B.;Yudin, P. V.;Zaitsev, A. V.
通讯作者：
Zaitsev, A. V.
激光熔化切割过程建模：II。
DOI：
10.1088/0022-3727/34/14/309
发表时间：
2001
期刊：
Journal of Physics D
影响因子：
--
作者：
J. Duan;H. Man;T. Yue
通讯作者：
T. Yue
使用高亮度光纤激光器惰性气体切割 304 不锈钢的实践和理论研究
影响因子：
2.1
作者：
M. Sparkes;M. Gross;S. Celotto;Tao Zhang;W. O'Neill
通讯作者：
W. O'Neill