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CN-224222735-U - Middle plate structure of middle-package sliding plate

CN224222735UCN 224222735 UCN224222735 UCN 224222735UCN-224222735-U

Abstract

The utility model belongs to the technical field of continuous casting tundish slide plates, in particular to a middle plate structure of a tundish slide plate, which comprises a middle plate body, wherein a middle hole is arranged on the middle plate body, and is characterized in that the upper surface of the middle plate body is provided with a thinning groove which is positioned at one side of the middle hole facing the small end of the middle plate body, the diameter of the thinning groove is equal to that of the middle hole, the length l of the thinning groove is 55-60mm, the included angle alpha between the inclination of the groove bottom and the upper surface is 30-35 degrees, the intersecting line of the groove bottom and the middle hole is 15-18mm away from the lower surface h of the middle plate body, and the inner wall surface of the thinning groove is smooth and has no hole. The utility model has the advantages that the resistance of the steel flowing channel is greatly reduced, the accumulation phenomenon of inclusions is obviously reduced, thereby greatly reducing the accumulation of inclusions on the surface of the middle plate, changing the choked flow state of the original molten steel, delaying the time of water gap blockage, improving the number of continuous casting furnaces by 4-5 furnaces, improving the product quality and creating considerable economic benefits for society.

Inventors

  • ZHANG FENGLIN
  • JIANG DEJIN
  • SUN YONGCHENG

Assignees

  • 本钢板材股份有限公司

Dates

Publication Date
20260512
Application Date
20250605

Claims (7)

  1. 1. The utility model provides a well package slide's medium plate structure, includes the medium plate body, is equipped with the mesopore on the medium plate body, its characterized in that, the upper surface of medium plate body is equipped with the attenuate groove, and the attenuate groove is located mesopore towards medium plate body small-end one side, and attenuate groove and mesopore diameter equiwidth, attenuate groove's length l is 55-60mm, and tank bottom slope is 30-35 with the contained angle alpha of upper surface, and the intersecting line of tank bottom and mesopore is 15-18mm apart from the lower surface h of medium plate body, the inner wall surface of attenuate groove is smooth no hole.
  2. 2. The tundish slide plate structure according to claim 1, wherein the diameter D of the mesopores is 65±1mm.
  3. 3. The tundish slide plate structure of claim 1, wherein the thickness H of the middle plate body is 30-35mm.
  4. 4. The tundish slide plate structure of claim 1, wherein the middle plate body is cast of an aluminum-carbon refractory material.
  5. 5. A tundish slide plate structure according to claim 1, characterized in that the angle α is 33 °.
  6. 6. A tundish slide plate structure according to claim 3, wherein the length of the middle plate body is 385-390mm and the width is 195-200mm.
  7. 7. The tundish slide plate structure of claim 6, wherein the length L of the middle plate body is 388mm, the width M is 198mm, and the thickness H is 32mm.

Description

Middle plate structure of middle-package sliding plate Technical Field The utility model belongs to the technical field of continuous casting tundish sliding plates, and particularly relates to a middle plate structure of a tundish sliding plate. Background In the production process of a slab continuous casting 1600mm casting machine, the blocking rate of low-carbon aluminum killed steel is up to 100%, a blocked light person can finish a casting schedule, and a blocked heavy person can reduce the number of continuous casting furnaces by changing the schedule, so that accident casting interruption is possibly caused, and a plurality of adverse effects are brought to production and cost. At present, IF steel is cast by adopting a slide plate ladle, and in-situ tracking, investigation and analysis show that in casting times of blockage of a plurality of water gaps, the inter-plate blockage (slide plate) accounts for more than 98%, once the water gaps are blocked, the liquid level and the slide plate fluctuate greatly, and in addition, impurities in a steel flow channel fall off, impurities are generated in a casting blank, and the quality of a final product is influenced. Therefore, the problem of position blockage of the middle plate of the skateboard is solved or alleviated, the production of the IF steel is facilitated, the internal quality of the IF steel is improved, and the middle plate modification is imperative. Disclosure of utility model The utility model aims to provide a middle plate structure of a tundish slide plate, overcomes the defects of the prior art, reduces the inter-plate blocking condition caused by accumulation of inclusions at the middle plate position, and solves the problem that the serious flocculation of inclusions between flow control plates of a continuous casting slide plate between plates affects the smooth operation of the casting process. In order to achieve the above purpose, the present utility model is realized by the following technical scheme: the utility model provides a well package slide's medium plate structure, includes the medium plate body, is equipped with the mesopore on the medium plate body, the upper surface of medium plate body is equipped with the attenuate groove, and the attenuate groove is located mesopore towards medium plate body little first one side, and attenuate groove and mesopore diameter equiwidth, and the length l of attenuate groove is 55-60mm, and tank bottom slope is 30-35 with the contained angle alpha of upper surface, and the intersecting line of tank bottom and mesopore is 15-18mm apart from the lower surface h of medium plate body, the inner wall surface of attenuate groove is smooth no hole. Further, the diameter D of the mesopores is 65+/-1 mm. Further, the thickness H of the middle plate body is 30-35mm. Further, the middle plate body is formed by pouring aluminum-carbon refractory materials. Further, the included angle α is 33 °. Further, the length of the middle plate body is 385-390mm, and the width is 195-200mm. Further, the length L of the middle plate body is 388mm, the width M is 198mm, and the thickness H is 32mm. Compared with the prior art, the utility model has the beneficial effects that: 1) After the thickness direction of the middle plate body is cut into a 33-degree thinning groove, the resistance of a steel flowing channel is greatly reduced, and the accumulation phenomenon of inclusions is obviously reduced, so that the accumulation of the inclusions on the surface of the middle plate is greatly reduced, the flow blocking state of raw molten steel is changed, the blocking time of a water gap is delayed, the number of continuous casting furnaces is increased by 4-5, and meanwhile, the product quality is also improved; 2) Through preliminary statistics, under the condition that the continuous casting furnace number is only calculated to influence the cost without considering continuous casting, the cost can be saved by about 300 ten thousand per year every time the continuous casting furnace number is increased by 1 furnace, and considerable economic benefits are created for society. Drawings FIG. 1 is a schematic diagram of an embodiment of the present utility model; FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1; in the figure, 1-a middle plate body, 2-a middle hole and 3-a thinning groove. Detailed Description The technical solutions of the present utility model will be clearly and fully described below with reference to specific embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will briefly explain the embodiments that are needed in the embodiments or the prior art descriptions, and it is obvious that the embodiments in the following description are some embodim