Multi-Objective Optimisation Of Fiber Laser Cutting Of Stainless Steel Plates Using Taguchi-Based Grey Relational Analysis (Part 1)
Yusuf Alptekin Turkkan, Muhammed Aslan, Alper Tarkan, Özgür Aslan, Celalettin Yuce and Nurettin Yavuz of Bursa Uludag University and NUKON Laser Machine Metal Industry study various methods of cutting stainless steel using laser.
1. Introduction
Developments in laser technology have been evolving in the recent years. Laser cutting stands out due to machining quality and cost saving, among other conventional material cutting processes for both metal and non-metallic substrates.
The advantages of laser cutting are precision, automation, high speed, reproducibility, quality, cost effectiveness, and non-contact cutting possibility. A laser beam is focused on the cutting area of the metal surface.
With heat generated by the beam, evaporation occurs in the material, resulting in a hole. Afterwards, metal is melted by moving the laser beam, and melted material is removed from the part with auxiliary gas. Another key advantage is creating a narrow heat affected zone with the beam, which can be focused on a very small area — minimising material loss.
Nd:YAG, carbon dioxide (CO2), and fiber lasers are commonly used for the laser cutting process. Before fiber lasers became widespread, CO2 lasers were more advantageous for cutting thick materials, while Nd:YAG lasers were for thin materials requiring precise cutting.
With its high power, high beam quality and efficiency, operating at wavelengths of 1060–1080 μm, fiber lasers are employed in the industry more than other types. Fiber lasers allow a deeper effect to be created, long-focus lenses to be used with less damage to optical lenses, and long-distance applications achieved.
Since the produced laser beam is transmitted with a flexible fiber optic cable without any need for a mirror in the cutting head, there is
neither power loss nor a need for an additional cooling system.
Read more here —> https://shorturl.at/bOT36
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