Moskva, Moscow, Russian Federation
Kazan', Kazan, Russian Federation
The paper reports the procedure of researches of welding bath parameters with the application of a high-speed video camera at laser welding. The video materials obtained allow monitoring on-line the parameters of bath crystallization and defining the dependence of this process upon welding speed. On the basis of the video material analysis there are defined dependences of bath parameter changes upon welding speed. There is shown a tie of changes in dimensions and micro-structure with the welding speed.
laser beam, high-speed video camera, crystallization, micro-structure.
1. Grigoriyants, А.G., Shiganov, I.N., Misyurov, А.I. Technological Processes of Laser Working. - М.: Publishing House of Bauman STU of Moscow. 2008. - pp. 652.
2. Shichun Li, Genyu Chen, Seiji Katayama, Yi Zhang. Relationship between spatter formation and dynamic molten pool during high-power deep-penetration laser welding // Applied Surface Science 2014. № 303. P. 481 - 488.
3. C. Brock, R. Hohenstein, M. Schmidt Mechanisms of vapour plume formation in laser deep penetration welding // Optics and Lasers in Engineering. 2014. № 58. P. 93 - 101.
4. Kuryntsev, S.V., Shiganov, I.N. Current trends in laser welding. Review Part 2 // Science Intensive Technologies in Mechanical Engineering. - 2015. - № 9(51). - pp. 15 - 20.
5. Deyong You, Xiang Gao, Seiji Katayama Monitoring of high-power laser welding using high-speed photographing and image processing // Mechanical Systems and Signal Processing. 2014. № 49. P. 39 - 52.
6. Babkin, К.D., Pevzner, Ya.B., Osipov, V.V., Kuznetsov, А.V. Triangulation homing sensor for tracking joint under welding at hybrid laser-arc steel welding // Scientific-Engineering Gazette of Saint-Petersburg State Polytechnics. - 2013. - № 183. - pp. 333 - 337.
7. Turichin, G.А., Zemlyakov, Е.V., Pozdeeva, Е.Yu., Tuominen, Ya., Vuoristo, P. Technological potentialities of laser surfacing using power fiber lasers // Metal Science and Metal Thermal Treatment. - 2012. - № 3. - pp. 35 - 40.
8. F. Tenner, C. Brock, F. Klämpfl, M. Schmidt Analysis of the correlation between plasma plume and keyhole behavior in laser metal welding for the modeling of the keyhole geometry // Optics and Lasers in Engineering. 2015. № 64. P. 32 - 41.
9. Wei Menga, Zhuguo Lia, Fenggui Lua, Yixiong Wua, Jianhong Chenb, Seiji Katayama Porosity formation mechanism and its prevention in laser lap welding for T-joints // Journal of Materials Processing Technology. 2014. № 214. P. 1658-1664.
10. Masiyang Luo, Yung C. Shin Vision-based weld pool boundary extraction and width measurement during keyhole fiber laser welding // Optics and Lasers in Engineering. 2015. № 64. P. 59 - 70.
11. Makarov, E.L., Yakushin, B.F. Theory of Steel and Alloy Weldability. - М.: Publishing House of Bauman STU of Moscow, 2014. - pp. 487.
12. Frolov, V.V. Theory of Welding Processes. - М.: Higher School, 1988. - pp. 550.
