Research on Surface Topography Characteristics of Laser Micro-hole Drilling

2nd International Conference on Materials Engineering and Nano Sciences

材料科学;物理学

Ding, H.J.^1 ; Li, X.H.^1 ; Wang, D.^1

College of Mechanical Engineering, Jiamusi University, Jiamusi, Heilongjiang, China^1

关键词: Large amounts;    Laser drilling;    Laser micro processing;    Laser process;    Machining surfaces;    Process parameters;    Pulse energies;    Surface characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/378/1/012018/pdf
DOI  :  10.1088/1757-899X/378/1/012018

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The surface of laser micro processing has great differences compared with the traditional machining surface. To research surface topography is of great significance for laser processing surface property. Combined with the laser mechanism, the surface characteristics of micro blind-hole drilled with different pulse energy and number were studied in the materials of spring steel 65Mn, stainless steel SUS301 and ceramic Al2O3. The results indicate that large pulse energy makes the hole much irregular and multi-pulse may cause the surface much rough. A large amount of molten material gathers around the hole for 65Mn and SUS301 while not for Al2O3 because of different processing mechanism. Therefore, process parameters and conditions should be explored for better surface topography of laser drilling.