Cylindrical multi-branch filter of tundish
A filter and tundish technology, applied in the field of metal continuous casting equipment, can solve the problems of small specific surface area of unit filter body, unsatisfactory removal of molten steel impurities, easy to be washed away by molten steel, etc., to achieve improved filtering effect and simple structure , making convenient effects
Inactive Publication Date: 2012-05-30
SHANDONG IRON & STEEL CO LTD
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Problems solved by technology
However, this device has the following disadvantages: ①The specific surface area of the unit filter is small, and the removal of impurities in molten steel is not ideal; ②Inlaid in the original tundish weir plate, it is easy to be washed away by molten steel in the actual production process
The filter has comprehensively considered the metal fluidity and the removal effect of impurities, and has been improved in all aspects. However, the structure of the device is relatively complicated, the production cost is high, and it is easy to be washed away by molten steel in the actual production process.
Method used
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[0031] Now the technical scheme of the present invention will be further described by the following examples.
[0032] The tundish columnar multi-branch filter consists of a substrate with a thickness of 30mm ( figure 1 ) and a filter element with a thickness of 5mm ( figure 2 ) from an interference fit. The tapered through-holes penetrating the substrate are staggered on the substrate to be installed with the filter element. According to the geometric structure of the selected filter element, the openings on the substrate are also different, such as circular and elliptical shapes, both of which can achieve the purpose of the present invention. .
[0033] The filter element is a test tube with a thick top and a thin bottom. The diameter of the upper opening is 20mm, and the lower opening is hemispherical with a diameter of 15mm. A plurality of circular through holes with a diameter of 3mm are distributed in parallel on the filter element. Through holes of other shapes, such...
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Abstract
The invention relates to a cylindrical multi-anabranch filter of a pouring box, comprising a substrate. The cylindrical multi-anabranch filter of the pouring box is characterized in that a plurality of filter pieces which are funnel-type tubular pieces are arranged on the substrate, each f tubular piece has an upper opening with a large diameter, a lower opening with a small diameter and a sealedbottom, each filter piece is provided with through holes in staggered arrangement, the filter structure shunts and thins molten steel for many times, changes the flowing state of the molten steel in the pouring box, stimulates the separation of the foreign matters from the molten steel, is more favorable to the accumulation and the floatation of the foreign matters so that the foreign matters areadsorbed by a covering agent of the pouring box, and the substrate is embedded in a baffle wall, the bottoms of the tubular pieces contact with the bottom of the pouring box to prevent the molten steel from being flushed and enhance the firmness of the filter pieces.
Description
technical field [0001] The invention relates to a metal continuous casting equipment, especially a filter element for continuous casting tundish equipment. Background technique [0002] The tundish is an intermediate container between the ladle and the crystallizer. Its functions are decompression, steady flow, slag removal, steel storage and diversion, and tundish metallurgy. As the quality requirements for steel products are getting higher and higher, modern metallurgy has higher and higher requirements for the purity of molten steel. Inclusions exist in the steel as an independent item, which destroys the continuity of the steel matrix, increases the inhomogeneity of the structure in the steel, and seriously affects various properties of the steel. And rolling defects, resulting in scrap. Therefore, removing inclusions and improving the cleanliness of molten steel is an important goal in the field of modern smelting technology. The tundish is no longer just a transitio...
Claims
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IPC IPC(8): B22D11/119B22D11/10
Inventor 赵燕许荣昌王波吕霞
Owner SHANDONG IRON & STEEL CO LTD