Open AccessHigh Power, High Speed, High Quality
Author(s) -
Fetzer Florian,
Hagenlocher Christian,
Weber Rudolf
Publication year - 2018
Publication title -
laser technik journal
Language(s) - English
Resource type - Journals
eISSN - 1863-9119
pISSN - 1613-7728
DOI - 10.1002/latj.201800017
Subject(s) - welding , materials science , laser beam welding , cracking , laser , laser beams , optics , laser beam quality , composite material , aluminium , penetration (warfare) , physics , operations research , engineering
At the Institut für Strahlwerkzeuge (IFSW), laser beam welding of aluminum sheets with a laser power of 16 kW and feed rates up to 50 m/min was investigated. The resultant weld seams were virtually free of processing pores and fluctuations of the penetration depth. Welding at very high feed rates reduced centerline cracking in close edge positions and increased the process efficiency. Humping could be prevented by welding with a large beam diameter of the processing spot of 630 μm. The quality of the welds was correlated to a stabilization of the vapor capillary by online X‐ray videography.