Fiber laser cutting effect on stent surface roughness and kerfs width
Journal
Journal of Technology
Journal Volume
28
Journal Issue
2
Pages
89-96
Date Issued
2013
Author(s)
Abstract
Stents are commonly inserted into coronary arteries for treating cardiovascular diseases. Nonetheless, the process of manufacturing metal stents is challenging owing to the geometric design, the optimization of machining methods, and the materials involved. Fiber lasers were used as the laser cutting technology for cutting stents. The experiment revealed the importance of precise technical parameters, including the cutting speed, laser power and defocus amount. These parameters strongly influence the kerfs width and the quality of the cutting seam surface. The optimal technological parameters for cutting cardiovascular stents with laser were acquired on the base of the experiment. Stents whose kerfs width is less than 16.8 μm were cut after repeated experiments. The surface roughness for stent laser cutting was Ra 43.5 nm, which essentially meets the design requirement for further performance evaluation. Finally, high-quality cutting of a 316LVM stainless steel vascular stent was achieved.
Subjects
Fiber laser; Laser cutting; Stent
SDGs
Other Subjects
Cardio-vascular disease; Cardiovascular stents; Coronary arteries; Geometric design; Laser cutting; Machining methods; Stent; Technological parameters; Experiments; Fiber lasers; Laser beam cutting; Laser beams; Optimization; Surface roughness; Stents
Type
journal article