Water Jet Guided Laser vs. Conventional Laser: Experimental Comparison of Surface Integrity for Different Aerospace AlloysThursday (25.06.2020) 09:00 - 09:20 Room 2
Laser cutting is a widely used manufacturing technology in aerospace industry. There are many parts, such as exhaust liners, baffles, combustion domes and liners, ducts, impingement rings, etc., that are manufactured using lasers. However, although considered a fast process, lasers have some quality issues associated with high heat input to the material. Water jet guided laser is a technology commercially made available by Synova, in order to overcome these issues. Pressurized water in the process provides focusing, cooling and cleaning on the cut region, eliminating undesired side effects of the laser. In this study, cutting performance of a water jet guided laser system and a conventional laser system is compared. For this purpose, well-known quality issues for laser cutting are taken into account, such as; dross/burr formation, surface quality, taper and recast layer. The samples are chosen among commonly used aerospace alloys: Haynes 188, Inconel 718, Inconel 625, Rene 41 and Ti-6Al-4V. Visual checks and measurements of surface roughness, taper and recast layer are conducted on the samples. The results show that cutting with a water jet guided laser system overall provides better surface integrity when compared to a conventional laser system.
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