Continuous casting tundish porous baffle wall having functions of casting and calcium treatment
A continuous casting tundish and calcium pouring technology, which is applied in the direction of manufacturing tools, casting equipment, casting molten material containers, etc., can solve the problems of no effective control means, secondary oxidation, etc., achieve simple structure, convenient installation, and prevent hazards Effect
Inactive Publication Date: 2013-11-27
武钢集团有限公司
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Problems solved by technology
[0010] The present invention aims at the problem that secondary oxidation is easily caused during continuous casting and continuous casting of molten steel, and there is no effective control means. Porous retaining wall of continuous casting tundish with function of pouring calcium
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[0029] Below in conjunction with embodiment and attached Figure 1-2 The present invention is further described, but the present invention is not limited.
[0030] The porous retaining wall (dam) body 1 is an inverted isosceles trapezoidal plate with a large upper part and a smaller lower part cast from an anti-erosion refractory material. The trapezoidal side wall of the wall body 1 is tangent to the tundish wall. There are 4 rows of 14 diversion holes 2 with different diameters distributed from the top to the bottom, of which the first row has 5 holes with an angle of 0 degrees with the horizontal, and the number of holes in the second, third and fourth rows decreases in turn and is in line with the horizontal plane. The included angles are all 45 degrees.
[0031] The apertures of the 1st and 2nd rows of diversion holes 2 are larger than the 3rd and 4th rows of apertures, and there is no Ca alloy material on the inner wall; The high-temperature metal material is wrapped a...
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The invention relates to a continuous casting tundish porous baffle wall having functions of casting and calcium treatment, and belongs to a flow control device of continuous casting steel tundishes. A wall body is an inversed isosceles trapezoid and formed by casting an anti-erosion refractory material; molten steel diversion holes are formed in the wall body; the porous baffle wall has the advantages that: the diversion holes are formed in the wall body in a horizontal row manner; inner walls of the diversion holes positioned on the bottom part of the wall body are provided with a calcium (Ca) alloy material. On the premise of no addition of other equipment, a function of calcium treatment for inclusion in molten steel of a casting tundish can be realized, and the damage of secondary oxide inclusion to steel quality and production can be effectively prevented; and the porous baffle wall is particularly applicable to a large-capacity and deep-bath tundish, dead zones in the tundish can be effectively reduced, and the floating of the inclusion is promoted. Moreover, the porous baffle wall is simple is structure, convenient to install and high in applicability.
Description
technical field [0001] The invention belongs to a flow control device for a steel continuous casting tundish, in particular to a slag retaining wall for a continuous casting tundish. Background technique [0002] With the continuous improvement of users' requirements for steel quality, smelting clean steel with small inclusions, uniform distribution, and no harm to steel properties has become the focus of steelmaking science and technology research. However, in the steelmaking process, the generation of non-metallic inclusions is inevitable. At present, in order to reduce the damage of inclusions to the properties of steel, in addition to preventing the secondary oxidation of molten steel and controlling the generation of inclusions, the most important means is to denature the inclusions. Calcium treatment process is a widely used inclusion denaturation treatment process. After molten steel is treated with calcium, the inclusions generated are small and evenly distributed, ...
Claims
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IPC IPC(8): B22D11/10B22D41/00
Inventor 张剑君高文芳彭著刚曹同友吴杰万恩同
Owner 武钢集团有限公司