Influence of the technology of a daisy-chain blowdown of a structural steel melt to remove non-metallic inclusions
V. S. Zhivchenko, S. A. Frolova, V. D. Alexandrov
Donbas National Academy of Civil Engineering and Architecture
Annotation: There are given the results of theoretical and practical investigations of the processes of blowing down a liquid metal with a gas. When simulating the processes there was fixed that a decrease of the distance among gas bubbles results in the bifurcation of paths of motion due to the affect of a swirl of a previous bubble, and an increase of bubbles dimensions leads to their pulsation in the vertical plane up to their breaking into smaller ones. Besides, there was found out that the most maximum effect of nonmetallic inclusions removal is observed at a daisy-chain blow-down of a melt through porous seams of a bucket floor or through line-slot sections in a small-bubble regime. On the base of the simulation results there were plotted dependences of the refinement degree, numbers of bubbles and their behavior and the melt blow-down intensity. There are given the results obtained when implementing the technology of the daisy-chain blow-down of a metal in the small-bubble regime at the ferrous metallurgy enterprises.
Keywords: blow-down with an inert gas, blow-down intensity, refinement degree, small-bubble regime, daisy-chain blow-down, line-slot sections.
Pages: 105-112.
Link for citation: Zhivchenko, V. S.; Frolova, S. A.; Alexandrov, V. D. Influence of the technology of a daisy-chain blowdown of a structural steel melt to remove non-metallic inclusions. – Text : electronic. – In: Metal Constructions. – 2010. – Vol. 16, N 2. – Р. 105-112. – URL: https://donnasa.ru/publish_house/journals/mk/2010-2/03_zhivchenko_frolova_aleksandrov.pdf (date of access: 03.07.2024). (in Russian)
Vol. 16, N 2 (2010)Journal: Metal Constructions
Publish house: Donbas National Academy of Civil Engineering and Architecture