CN2483120Y - Slag-blocking wall for continuous casting intermediate ladle - Google Patents

Abstract

The utility model discloses a continuous casting tundish slag dam. The utility model is provided with the steel water outlet openings districted with different hole diameters, different positions, different left and right tilt angle Alpha and Alpha' as well as the different up and down tilt angle Beta, Beta'. The slag dam suits in particular to the casting producing with the 1200 mm distance between the six machine and six currents and a tundish poured font cavity, which ensures the steel water's retaining time in the tundish equal to or less than ten minutes, and is helpful for the inclusion in the steel water flowing upwards. Because the tundish of the slag dam has a reasonable installment position, which eliminates the dead angle of the steel water of the tundish, thus, a first furnace can be six currents as well as casting with casting success of 100%. The temperature difference of the flowing area steel water is within 5 DEG.

Description

The continuous casting tundish slag blocking wall

Technical field the utility model relates to a kind of metallurgical continuous casting pans that are applied to and blocks that field trash does not flow in the continuous cast mold in the molten steel, and guarantees that molten steel has certain time of staying and each stream to start in pans and opens the slag blocking wall that waters success.

Background technology is used for the slag blocking wall planform of metallurgical continuous casting pans, and the distribution of the big or small position at the mouth of a river of tapping on the slag blocking wall etc. is to influence one of bad qualitative factor of continuous casting.At the position of before the utility model research and they of slag blocking wall being installed in pans etc., each smelter was all done many work according to characteristics separately, designed multi-form slag blocking wall, as positive U type, inverted U, V-2 type, Y-1 type, Y-2 type etc., the tapping mouth of a river of opening on these slag blocking walls is none set pattern rule also, and the distribution of position is also decided according to different situations; Also have nothing in common with each other in the installation site of these slag blocking walls in continuous casting tundish, they have satisfied continuous casting from different perspectives and have produced needs; But it is that some is excessive because of the aperture at the tapping mouth of a river that a common defective is arranged, and the stop deficiency of molten steel in pans can not guarantee whole come-ups of bits in the molten steel.The tapping mouth of a river position distribution of some slag blocking wall is unreasonable, and molten steel directly washes away the stopper on the casting gate in the pans, influences the service life of stopper.Some because of casting gate in the pans at a distance of far away excessively, can not guarantee that each casting gate is opened simultaneously to water, and the oral region molten steel temperature difference of respectively casting is bigger, these all directly influence bad quality of continuous casting.

Summary of the invention task to be solved in the utility model provides a kind of molten steel that can guarantee enough time of staying in continuous casting tundish, can guarantee again simultaneously molten steel in the time of staying in pans the field trash in the molten steel can fully float and not flow into the novel continuous casting tundish slag blocking wall of continuous cast mold.This slag blocking wall is particularly suitable in the continuous casting production of 1200 millimeter to six machines, six streams, casting gate spacing.

For realizing that the technical scheme that above-mentioned task adopts is: the slag blocking wall of falling the flute profile of an approximate U type of design, on it, have a plurality of tappings mouth of a river (hereinafter to be referred as delivery port), wherein three delivery ports center of being distributed in slag blocking wall takes over, and another delivery port is distributed in the position, lower left.These several delivery ports are not vertically to connect slag blocking wall, but are certain plane camber angle and vertical tilt angle; The aperture of these delivery ports also has nothing in common with each other, and is different and different according to distributing position.

Adopt continuous casting tundish slag blocking wall that as above technical scheme makes and it particular topology at continuous casting tundish, its major advantage is to guarantee that the time of staying of molten steel in pans is about 10 minutes, field trash in the molten steel is fully floated, simultaneously because of having improved the MOLTEN STEEL FLOW track, molten steel is flowed along slag interface, shortened inclusion floating distance in the molten steel, helping slag absorbs, eliminated the dead angle of pans bottom sections, guaranteed the Channel Group of each regional molten steel in the pans, helping the interior liquid steel temperature of pans distributes even substantially, each casting gate zone molten steel temperature difference can be controlled in 5 ℃ of scopes, realize that each stream starts to open and water freely that each casting gate is opened simultaneously and watered.This slag blocking wall can also water ladle stream and impact the strong eddy current cause and be limited in regional area, prevents that the surface wave that turbulent diffusion causes from making slag be involved in molten steel inside, guaranteed steel quality.

Description of drawings Fig. 1 is the forward schematic diagram of continuous casting tundish slag blocking wall described in the utility model, also is specification digest accompanying drawing of the present utility model.

Fig. 2 is the schematic top view of continuous casting tundish slag blocking wall.

Fig. 3 is that the A-A of continuous casting tundish slag blocking wall shown in Figure 1 is to cross-sectional schematic.

Fig. 4 is that the B of continuous casting tundish slag blocking wall shown in Figure 1 is to schematic diagram.

Fig. 5 is the scheme of installation of continuous casting tundish slag blocking wall in continuous casting tundish.

The specific embodiment is described in further detail the specific embodiment of the present utility model below in conjunction with accompanying drawing.

As shown in Figure 1, on slag blocking wall, have delivery port 1,2,3,4, wherein delivery port 1,2,3 is distributed in the position that the slag blocking wall center takes over, the distance of delivery port at the bottom of the slag blocking wall is 20～35% of slag blocking wall height, delivery port 2,1 and delivery port 3 equidistantly distribute, and delivery port 1 and 2,2 and 3 vertical interval are 12～18% of slag blocking wall height; Simultaneously the circular hole size of delivery port 1,2,3 be 50～60 millimeters of Φ, and the mouth of a river 4 of tapping is arranged in below slag blocking wall takes back, and circular hole center and slag blocking wall distance from bottom are 35～45% of slag blocking wall height, and the pore size of delivery port 4 is advisable for 35～45 millimeters at Φ.As can be known, delivery port 1,2,3,4 is not vertically to connect slag blocking wall, but angled from Fig. 1 to Fig. 4, wherein delivery port 1,2,4 one-tenth Right deviation oblique angle α, and α is between 25～30 °, 3 one-tenth Right deviation oblique angles of delivery port α ', and α ' is between 20～25 °; As for inclination angle up and down, oblique angle β=5～15 ° of having a down dip of delivery port 1,2,4, and export 3 oblique angle β '=15～25 ° of having a down dip.Simultaneously, as shown in Figure 2, the sideline on two planes, front and back of slag blocking wall is not isometric, has formed an angle γ and a γ ', and this has just determined its installation site (as shown in Figure 5) in continuous casting tundish.

For the piece that freezes that improves behind the molten steel solidification in pans service life (17～20 hours/jar) and the tank body turns over bag and comes off, in pans except that installing on request the slag blocking wall, also in the pans bottom triangle is installed and is impacted base plate 5 and trapezoidal impact base plate 6, their thickness has nothing in common with each other.Three of the trapezoidal impact base plate 6 molten steel impact zone wallboards 7 and 7 that parallelogram are installed ', trapezoidal molten steel impact zone wallboard 8 is installed, constructed the complete continuous casting tundish oral region of casting like this.When molten steel vertically flows into continuous casting tundish casting gate when zone from steel ladle, after this zone stops certain hour, from water outlet, 1,2,3,4 flow to each casting gate respectively, and guarantee that each casting gate is opened simultaneously and water.

Claims (1)

1, a kind of continuous casting tundish slag blocking wall, it is characterized in that slag blocking wall is V-shaped, be distributed with delivery port (1), (2), (3), (4) on it, wherein delivery port (1), (2), (3) are distributed in the position that takes over, slag blocking wall center, go out saliva (4) and are distributed in the slag blocking wall below of taking back; Distance at the bottom of delivery port (3) and the slag blocking wall be slag blocking wall high 20～25%, delivery port (2), (1) and go out saliva (3) and equidistantly distribute, and be 12～18% of slag blocking wall height with (2), (2) with the vertical interval of (3) (1), delivery port (4) is 3.5～40% of a slag blocking wall height apart from the slag blocking wall bottom level; The Circularhole diameter of delivery port (1), (2), (3) is 50～60 millimeters of Φ, and the Circularhole diameter of delivery port (4) is 3.5～45 millimeters of Φ; Be tilted to the right angle α '=20～25 ° of be tilted to the right angle α=2.5～30 ° of delivery port (1), (2), (4) circular hole, delivery port (3) circular hole; Oblique angle β=5～10 ° of having a down dip of delivery port (1), (2), (4), oblique angle β '=15～25 ° of having a down dip of delivery port (3).

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