Tundish of barricade and retaining dam structure and masonry method of tundish
A tundish and retaining dam technology, which is applied in the direction of casting melt containers, metal processing equipment, casting equipment, etc., can solve the problem that the molten steel cannot provide enough upward force of the flow field, the effect is not very ideal, and the tundish retaining wall has a large gap and other problems, to achieve the effect of promoting the floating of inclusions, increasing the cleanliness, and improving the degree of lifting
Pending Publication Date: 2019-04-26
BAOTOU IRON & STEEL GRP
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Problems solved by technology
[0003] Due to the large gap between the traditional tundish retaining wall and the dam, it cannot provide sufficient flow field upward force for the molten steel, so the effect of the traditional tundish upper and lower retaining walls on promoting the floating and separation of inclusions is not very ideal
Method used
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Embodiment 1
[0025] After implementing the tundish of the retaining wall and dam structure of the present invention on the wide and thick plate production line, the cleanliness of molten steel has been effectively improved. The detection of inclusions in cast steel shows that the B-type oxidized inclusions have been reduced from 1.0 to 0.5, and the cleanliness of molten steel has increased. a grade.
Embodiment 2
[0027] After implementing the tundish of retaining wall and dam structure of the present invention on the wide and thick plate production line, the weight of unqualified steel plate flaw detection caused by excessive inclusions in the steel dropped from an average of 45 tons / month to an average of 10 tons / month.
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The invention provides a tundish of a barricade and retaining dam structure and a masonry method of the tundish. The tundish of the barricade and retaining dam structure comprises a barricade, a retaining dam and refractory bricks. The refractory bricks are arranged between the barricade and the retaining dam. The tundish is improved on the basis of a traditional tundish structure, a flow field ofmolten steel in the tundish is improved, the flow field that molten steel reaches a stopper rod area from an impact area in the tundish is more upward, inclusions in the molten steel are effectivelypromoted to effectively float up along with the flow field of the molten steel, the contact effect of the inclusions and a covering agent in the surface of the molten steel is increased, adsorption ofa tundish covering agent to oxide inclusions in the molten steel is promoted, and therefore cleanliness of the molten steel is increased, and product quality is improved.
Description
technical field [0001] The invention belongs to the field of steelmaking and continuous casting, and in particular relates to a tundish for a retaining wall and dam structure and a method for using the same. Background technique [0002] In the continuous casting process, the tundish plays a key role in connecting the past and the future, such as figure 1 As shown, after the molten steel smelted by the upstream process reaches the casting machine, the molten steel flows from the ladle A through the shroud B and then injected into the tundish C. The traditional rectangular tundish is composed of retaining wall E and retaining dam F structure. The area where the long nozzle on one side of the wall injects molten steel is the impact area, and the other side of the retaining wall is the stopper rod area, where the stopper rod D is set, and the crystallization area M is under the stopper rod D. Since the density of liquid slag and tundish covering agent in molten steel is lighte...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B22D41/00
CPCB22D41/00
Inventor 慕园园许美宗朱磊李强张鹏赵启东徐长青王峰宋立民兰海菊郝宇
Owner BAOTOU IRON & STEEL GRP
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