Son Seungik, Lee Dongkyoung
Department of Future Convergence Engineering, Kongju National University, Cheonan 1223-24, Korea.
Department of Mechanical and Automotive Engineering, Kongju National University, Cheonan 1223-24, Korea.
Materials (Basel). 2020 Oct 15;13(20):4596. doi: 10.3390/ma13204596.
This experimental study investigated the effect of laser parameters on the machining of SS41 and SUS304. The metallic materials play an important role in engineering applications. They are widely used in high-tech industries such as aerospace, automotive, and architecture. Due to the development of technology and high-tech industrialization, the various processing technologies are being developed with the requirement of high precision. However, the conventional cutting process is difficult to meet high precision processing. Therefore, to achieve high precision processing of the SS41 and SUS304, laser manufacturing has been applied. The current study investigated the process quality of laser cutting for SS41 and SUS304, with the usage of a continuous wave CO laser cutting system. The experimental variables are set to the laser cutting speed, laser power, and different engineering materials. The results are significantly affected by the laser parameters. As the result, the process quality of the laser cutting has been observed by measuring the top and bottom kerf widths, as well as the size of the melting zone and Heat Affected Zone (HAZ) according to volume energy. In addition, the evaluation of the laser processing parameters is significantly important to achieve optimal cutting quality. Therefore, we observed the correlation between the laser parameters and cutting quality. These were evaluated by analysis of variance (ANOVA) and multiple regression analysis. The experimental results of kerf top, kerf bottom, melting width, and HAZ on the laser parameters are properly predicted by multiple regression. In addition, the effect of laser parameters on the materials is determinant by the percentage of contribution of ANOVA.
本实验研究了激光参数对SS41和SUS304加工的影响。金属材料在工程应用中起着重要作用。它们广泛应用于航空航天、汽车和建筑等高科技产业。由于技术的发展和高科技产业化，各种加工技术随着高精度的要求而不断发展。然而，传统的切削工艺难以满足高精度加工的要求。因此，为了实现SS41和SUS304的高精度加工，已应用激光制造技术。本研究使用连续波CO激光切割系统，研究了SS41和SUS304激光切割的工艺质量。实验变量设置为激光切割速度、激光功率和不同的工程材料。结果受激光参数的显著影响。因此，通过测量顶部和底部切口宽度以及根据体积能量测量熔化区和热影响区（HAZ）的大小，观察了激光切割的工艺质量。此外，评估激光加工参数对于实现最佳切割质量非常重要。因此，我们观察了激光参数与切割质量之间的相关性。通过方差分析（ANOVA）和多元回归分析对这些进行了评估。通过多元回归可以很好地预测激光参数对切口顶部、切口底部、熔化宽度和热影响区的实验结果。此外，激光参数对材料的影响由方差分析的贡献率决定。
