DEVELOPMENT OF LABORATORY EQUIPMENT FOR MANUFACTURE OF FLAT AND CYLINDRICAL SAMPLES FROM THIN SHEET MATERIAL USING LASER WELDING TECHNOLOGY
DOI:
https://doi.org/10.35546/kntu2078-4481.2024.1.20Keywords:
laser welding, thin-sheet materials, certification of the laser welding procedure, technological equipmentAbstract
Laser welding technologies for thin-sheet materials are widely used in many industries, such as nuclear, automotive, space, aviation, shipbuilding, and others. This diversity of laser welding applications requires standardization in the production of test welds. However, the results of the studies conducted are very different and cannot be systematized. Previously, little attention was paid to the problem of manufacturing specialized technological equipment for creating test welded joints. According to DSTU EN ISO 15614-11:2015 "Technical specifications and certification of welding technology for metal materials. Testing of welding processes. Part 11. Electron Beam and Laser Beam Welding", before the certification of laser welding technology, it is necessary to create control samples of welded joints of specified shapes and sizes. This poses a challenge to us in the development, manufacture and testing of the necessary technological equipment. The aim of the work was to create unified technological equipment for the preparation of test welded joints of thin-sheet materials for further certification of laser welding technology. The design documentation (preliminary design) for this technological equipment aimed at manufacturing test samples was developed. The clamp presented in this article is designed specifically for welding parts made of thin sheet material, both flat and cylindrical. It ensures stable heat removal from the welding zone due to the use of a pressure copper cooler, which in turn prevents the formation of weld defects such as gaps and underwelds. Also, thanks to the narrow gas supply groove on the heat sink bar, it is possible to position the clamps as close as possible to the edges of the sheet, which ensures its uniform pressing along the entire length.
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