Structure for effectively solving water seepage of crystallizer opening skin in slab continuous casting production

Abstract

The invention belongs to the field of steelmaking continuous casting, and relates to a structure for effectively solving water seepage of a crystallizer opening skin in slab continuous casting production, the structure comprises a crystallizer, a crystallizer copper plate, a weight, a sealing device, a bending section and a fan-shaped section, the bending section and the fan-shaped section are arranged below the crystallizer, and the sealing device is arranged between the crystallizer copper plate and the weight. The air blowing device is additionally arranged on the outer cambered surface of the crystallizer, the device can blow away steam around the outer cambered surface of the crystallizer, the steam is prevented from being condensed into water, and therefore the water seepage problem is prevented, the water seepage problem is effectively solved through the structural design, and smooth continuous casting production and the quality of casting blanks are guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of steelmaking continuous casting and relates to a structure that effectively solves the problem of water seepage at the mouth of a crystallizer in slab continuous casting production. Background Art

[0002] In the slab continuous casting process, the crystallizer is the core equipment of the continuous casting machine. Its function is to solidify the liquid molten steel into a billet with a certain shape, the outer surface is the billet shell, but the inside is still liquid. The billet is formed and crystallized in the crystallizer. Therefore, the performance of the crystallizer directly affects the quality of the billet produced.

[0003] However, in the slab continuous casting production, water seepage from the mold mouth often occurs. Although this problem seems insignificant, the consequences are quite serious. The seeping water droplets will directly drip into the molten steel in the mold, causing the molten steel to surge in the mold and the liquid level to fluctuate too much, thus affecting the normal crystallization process of the molten steel. This will not only seriously affect the quality of the ingot, but may even cause safety accidents, resulting in forced production suspension and scrapping of the ingot.

[0004] There are many reasons for water seepage at the mouth of the crystallizer, which may be related to the poor sealing of the joint surface between the copper plate and the weight of the crystallizer, the accumulation of steam around the crystallizer and condensation into water, the steam rising from the fan section and gathering around the crystallizer, etc. Therefore, how to solve the problem of water seepage at the mouth of the crystallizer has become a technical problem that needs to be solved urgently in slab continuous casting production. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a structure that effectively solves the problem of water seepage at the mouth of the crystallizer in slab continuous casting production.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a structure that effectively solves the problem of water seepage at the mouth of a crystallizer in slab continuous casting production, comprising a crystallizer, a crystallizer copper plate, a weight, a sealing device, and a curved section and a fan-shaped section arranged below the crystallizer, wherein the sealing device is arranged between the crystallizer copper plate and the weight to isolate steam condensate from flowing into the crystallizer, thereby solving the problem of water seepage at the mouth of the crystallizer.

[0007] Optionally, the sealing device includes a semicircular groove opened in the middle of the butt joint surface between the crystallizer copper plate and the pressure iron, and a silicone strip filled in the semicircular groove.

[0008] Optionally, the diameter of the silicone strip is 5 mm, and the pressure iron is fastened to the copper plate of the crystallizer by bolts to achieve sealing.

[0009] Optionally, it further includes a newly added steam extraction air duct on the outer arc of the mold. The air duct is arranged at the outer arc of the mold cover plate, with a diameter of 219 mm, aligned with the smoke exhaust air duct opening of the tundish car, and uses the smoke exhaust fan air duct to timely discharge the steam around the mold, avoiding the accumulation of steam around the mold.

[0010] Optionally, it further includes a steam channel blocking device arranged between the curved section and the segment. The blocking device is formed by laying a platform with rubber or iron plate, and is used to isolate the steam rising from the segment and form an accumulation around the mold.

[0011] Optionally, the segment is provided with several sections.

[0012] The beneficial effects of the present invention are as follows: The present invention effectively solves the problem of water seepage at the mold mouth in slab continuous casting production. By enhancing the sealing between the mold copper plate and the clamping iron, adding a steam extraction air duct on the outer arc, and blocking the steam channel between the curved section and the segment, the water seepage problem is fundamentally solved, significantly improving the quality of the cast slab, enhancing production safety, optimizing the production environment, being easy to implement and maintain at the same time, and having important value for improving the production efficiency of slab continuous casting.

[0013] Other advantages, objectives, and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, where:

[0015] Figure 1 is the overall structural schematic diagram of the present invention;

[0016] Figure 2 is the assembly schematic diagram of the copper plate, clamping iron, and mold of the present invention;

[0017] Figure 3 is the installation schematic diagram of the present invention.

[0018] Reference numerals: mold 1, copper plate 2, clamping iron 3, semi-circular groove 4, curved section 5, segment 6, air duct 7, mold cover plate 8, steam channel blocking device 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0020] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as limiting the present invention; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0021] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] As Figures 1 to 3 shown, the structure that effectively solves the problem of water seepage at the mold mouth in slab continuous casting production of the present invention mainly includes a mold 1, a copper plate 2, a weight 3, a sealing device, and a curved section 5 and a segment 6 arranged below the mold.

[0023] In this embodiment, the sealing device is arranged as follows: a semi-circular groove 4 is opened in the middle of the docking surface of the copper plate 2 and the weight 3. The opening position of the semi-circular groove 4 is accurately calculated to ensure that steam condensate can be effectively isolated. A silica gel strip with a diameter of 5 mm is selected to be filled in the semi-circular groove 4. The silica gel strip has good elasticity and sealing performance and can closely fit the docking surface of the copper plate 2 and the weight 3. The weight 3 is fastened to the copper plate 2 through bolts to achieve tight sealing between the copper plate 2 and the weight 3, thereby effectively isolating the steam condensate from flowing into the mold 1.

[0024] In this embodiment, a newly added steam extraction air duct on the outer arc of the mold: An air duct 7 is provided at the outer arc of the mold cover plate 8. The diameter of the air duct 7 is 219 mm to ensure alignment with the smoke exhaust air duct opening of the tundish carriage. The air duct 7 is connected to the smoke exhaust fan of the tundish carriage, and the suction of the smoke exhaust fan is used to timely discharge the steam around the mold 1, preventing the steam from accumulating and condensing into water around the mold.

[0025] In this embodiment, the setting of the steam channel blocking device 9: A steam channel blocking device is provided between the curved section 5 and the segment 6. The blocking device is formed by laying a platform with rubber or iron plates. The blocking device can effectively isolate the steam rising from the segment 6 from accumulating around the mold 1, further preventing the steam condensate from flowing into the mold 1.

[0026] In this embodiment, the setting of the segments: The segment 6 is provided with 1 to 14 segments, and each segment of the segment is precisely machined and assembled to ensure its good guiding and supporting functions.

[0027] The structure provided by the present invention effectively solves the problem of water seepage at the mold opening in slab continuous casting production. By enhancing the sealing performance, adding a steam extraction air duct on the outer arc and blocking the steam channel and other measures, the problem of water seepage is fundamentally solved. The implementation of this structure significantly improves the quality of the cast slab, enhances the production safety, and optimizes the production environment. At the same time, this structure is easy to implement and maintain, and has important value for improving the production efficiency of slab continuous casting.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A structure that effectively solves the problem of water seepage at the mouth of the crystallizer in slab continuous casting production, characterized by: The invention comprises a crystallizer, a crystallizer copper plate, a weight, a sealing device, and a curved section and a fan-shaped section arranged below the crystallizer. The sealing device is arranged between the crystallizer copper plate and the weight to isolate steam condensate from flowing into the crystallizer, thereby solving the problem of water seepage at the mouth of the crystallizer.

2. The structure for effectively solving the problem of water seepage at the mouth of the crystallizer in slab continuous casting production according to claim 1 is characterized in that: The sealing device comprises a semicircular groove arranged in the middle of the butting surface between the crystallizer copper plate and the pressure iron, and a silica gel strip filled in the semicircular groove.

3. The structure for effectively solving the problem of water seepage at the mouth of the crystallizer in slab continuous casting production according to claim 2 is characterized in that: The diameter of the silicone strip is 5 mm, and the pressure iron is fastened to the copper plate of the crystallizer by bolts to achieve sealing.

4. The structure for effectively solving the problem of water seepage at the mouth of the crystallizer in slab continuous casting production according to claim 1 is characterized in that: It also includes a newly added crystallizer outer arc steam exhaust duct. The duct is set at the outer arc of the crystallizer cover plate. Its diameter is 219mm and is aligned with the smoke exhaust duct opening of the medium ladle car. The smoke exhaust fan duct is used to discharge the steam around the crystallizer in time to avoid steam accumulation around the crystallizer.

5. The structure for effectively solving the problem of water seepage at the mouth of the crystallizer in slab continuous casting production according to claim 1 is characterized in that: It also includes a steam channel blocking device arranged between the curved section and the fan-shaped section. The blocking device is formed by laying a platform with rubber or iron plates, and is used to isolate the steam in the fan-shaped section from rising and gathering around the crystallizer.

6. The structure for effectively solving the problem of water seepage at the mouth of the crystallizer in slab continuous casting production according to claim 1 is characterized in that: The sector is provided with a plurality of sections.

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