Novel casting protection assembly of continuous casting crystallizer

Abstract

The utility model provides a novel casting protection assembly of a continuous casting crystallizer, which is characterized by comprising a protection plate and a protection plate placing support part, the cross section of the protection plate is of a V-shaped structure, the two sides of the bottom of the protection plate are respectively and fixedly provided with a protection plate placing support part, the middle part of the protection plate is provided with a plurality of through holes distributed along the vertical direction, and the through holes are communicated with the protection plate placing support part. And the protective plate and the protective plate placing and supporting part are formed by processing iron materials. According to the protection assembly, the corners of the crystallizer can be completely shielded from bottom to top, and in the molten steel shielding process, the phenomena of upward floating and intensified splashing of molten steel do not exist, so that the splashed molten steel can be effectively prevented from penetrating into gaps in the corners of the crystallizer.

Description

Technical Field

[0001] The utility model relates to the technical field of molten steel crystallization, in particular to a novel pouring protection component for a continuous casting crystallizer. Background Art

[0002] The existing rectangular continuous casting crystallizer is generally composed of two wide sides and two narrow sides. The intersection of the narrow side and the wide side constitutes the corner of the crystallizer. During the initial pouring, the flowing molten steel will splash, and the splashing molten steel will penetrate into the gap at the corner of the crystallizer, that is, the molten steel enters the gap between the narrow side and the wide side. If the above gap is not protected, the splashing molten steel will penetrate into the gap, and the molten steel in the gap will be cooled to form scrap steel. The existence of scrap steel will cause the following problems: 1. The ingot will be scratched during the continuous casting process, which will lead to steel leakage in the ingot; 2. The quality of the corner of the head billet is reduced; 3. The gap at the corner of the crystallizer will continue to expand, so that the crystallizer will be replaced prematurely, shortening the service life of the crystallizer.

[0003] In the prior art, during the initial pouring, in order to prevent the splashing molten steel from penetrating into the gap, a wooden slag baffle is generally used to protect the corners of the crystallizer. As the molten steel level rises during the pouring process, the slag baffle will come into contact with the molten steel level too early and cause more violent splashing, forcing it to be taken out in advance, which fails to achieve the effect of protecting the corners of the crystallizer. However, the slag baffle is too short and cannot protect the lower half of the corner of the crystallizer, and splashing molten steel will also penetrate into the corner. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of opening protection component for a continuous casting crystallizer, which can completely shield the corners of the crystallizer from bottom to top, and in the process of shielding molten steel, there is no floating and aggravated splashing of molten steel, thereby effectively preventing the splashing molten steel from penetrating into the gap at the corner of the crystallizer.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a new type of opening protection component for a continuous casting crystallizer, including a guard plate and a guard plate placement support portion, the cross-section of the guard plate is a V-shaped structure, a guard plate placement support portion is fixedly arranged on both sides of the bottom of the guard plate, and a plurality of through holes distributed along the vertical direction are arranged in the middle of the guard plate, and the guard plate and the guard plate placement support portion are both made of iron material.

[0006] Preferably, the guard plate placement support portion includes a connecting net and a supporting block, the connecting net is fixedly connected to the bottom of the guard plate, and the upper part of the supporting block is fixedly connected to the lower part of the connecting net.

[0007] Furthermore, when the guard plate is stably placed at the corresponding pouring protection position of the crystallizer, the angle α between the outer wall of the guard plate and the inner wall of the wide side of the crystallizer is

[0008] 25°≤α≤35°.

[0009] Furthermore, the guard plate is made of 0.5 mm thick tin plate.

[0010] Furthermore, a rear support plate is vertically fixedly arranged at the top corner of the guard plate.

[0011] Furthermore, a slope is provided at both front end edges of the guard plate for fitting with the inner side wall of the wide side of the crystallizer.

[0012] Furthermore, a folding plate for fitting with the inner side wall of the wide side of the crystallizer is provided at both front ends of the guard plate.

[0013] The beneficial effects of the utility model are as follows: the utility model has a simple structure and is easy to manufacture; the guard plate can effectively prevent the gap at the corner of the crystallizer from piercing the splashing molten steel during the initial pouring stage, thereby effectively preventing subsequent steel leakage accidents, and at the same time, can improve the quality of the head billet corner and extend the service life of the crystallizer; when the guard plate is placed at the corresponding corner of the crystallizer, the two support blocks can achieve stable support for its bottom, and the top corner of the guard plate abuts against the narrow side wall, so that the guard plate can be stably placed at the corner of the crystallizer, and when the initial molten steel is poured, It can effectively prevent the molten steel from knocking it down; after the rear support plate is arranged at the top corner of the guard plate, the rear support plate is in surface contact with the narrow side wall, which can improve the support surface of the narrow side on the guard plate, and then facilitate the placement stability of the guard plate; the two front end edges of the guard plate are in surface contact with the wide side wall or a broken line plate is arranged to contact the wide side wall, which can improve the slag sealing of the guard plate to the rear corner of the crystallizer, thereby effectively preventing the splashing molten steel from penetrating into the gap; the through holes arranged on the guard plate facilitate the molten steel to flow into the corner of the crystallizer, thereby ensuring the smooth formation of the head billet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some preferred embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the first specific embodiment of the utility model;

[0016] Figure 2 This is a front view of the first specific embodiment of the utility model distributed in a crystallizer;

[0017] Figure 3This is a front view of the second specific embodiment of the utility model distributed in a crystallizer;

[0018] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0019] In the figure: 1 guard plate, 11 through hole, 12 rear support plate, 13 fold line plate, 14 inclined surface, 2 guard plate placement support part, 21 connecting net, 22 support block, 31 wide side, 32 narrow side. DETAILED DESCRIPTION

[0020] The following will be combined with specific embodiments and attached Figure 1-4 , the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the preferred embodiments of the utility model, not all of the embodiments. Those skilled in the art can make similar modifications without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0021] The utility model provides a new type of continuous casting crystallizer pouring protection component (such as Figure 1 As shown), it includes a guard plate 1 and a guard plate placement support portion 2. The cross section of the guard plate 1 is a V-shaped structure. The cross section of the guard plate 1 is a V-shaped structure. In actual application, the top corner of the guard plate 1 is against the side wall of the narrow side 32 of the crystallizer. At the same time, the two front end edges of the guard plate 1 are against the side wall of the wide side 31 of the crystallizer. This is conducive to achieving a stable manner of the guard plate 1 at the corner of the crystallizer and ensuring the slag blocking effect. The guard plate placement support portion 2 is fixedly arranged on both sides of the bottom of the guard plate 1. The guard plate placement support portion 2 supports the guard plate 1, which can further improve the placement stability of the guard plate 1 at the corner of the crystallizer. The slag blocking effect of the guard plate 1 is ensured; a plurality of through holes 11 distributed along the vertical direction are arranged in the middle of the guard plate 1. In this specific embodiment, the number of through holes 11 is set to three, and the molten steel can smoothly flow into the space between the guard plate 1 and the corner of the crystallizer through the through holes 11, thereby facilitating the formation of the corner of the head billet. The guard plate 1 and the guard plate placement support part 2 are both made of iron materials. During the initial pouring process, the guard plate 1 can block the slag. As the molten steel inside the crystallizer continues to flow in, the guard plate 1 and the guard plate placement support part 2 are completely melted into the molten steel, and then the device will not affect the continuous casting process. During the normal continuous casting process, the outer layer of the molten steel will form a hard shell under the cooling effect of the crystallizer, so that the hard shell can be used to pull the cast billet, and then the continuous casting process is realized. The use of guard plates can effectively prevent the gaps at the corners of the crystallizer from piercing the splashing molten steel during the initial pouring stage, thereby effectively preventing subsequent steel leakage accidents. At the same time, it can improve the quality of the corners of the head billet and extend the service life of the crystallizer.

[0022] On the basis of the above embodiment, the specific implementation method of the guard plate placement support part 2 is: the guard plate placement support part 2 includes a connecting net 21 and a support block 22, the connecting net 21 is fixedly connected to the bottom of the guard plate 1, specifically, the connecting net 21 and the guard plate 1 are fixedly connected by riveting, the upper part of the support block 22 is fixedly connected to the lower part of the connecting net 21, specifically, the support block 22 is fixedly connected to the lower part of the connecting net 21 by riveting, the connecting net 21 can be a wire mesh, and the support block 22 can be an iron block.

[0023] When the guard plate 1 is stably placed at the corresponding pouring protection position of the crystallizer, the angle α between the outer wall of the guard plate 1 and the inner wall of the wide side 31 of the crystallizer, in actual application, when α is too large, there will be problems of heat deformation, low strength, and easy to fall; when α is too small, there will be a problem that the guard plate 1 is easily knocked down by the pouring molten steel; therefore, in this specific embodiment, α is set within the following range: 25°≤α≤35°, preferably, α is set to 30 degrees, and placed at an angle of about 30 degrees, the guard plate 1 will have a certain strength and will not be deformed due to heat. Because of the angle, the top corner of the guard plate 1 is supported on the copper plate of the narrow side 32 of the crystallizer, which effectively prevents the guard plate 1 from being knocked down by the molten steel.

[0024] In actual application, the applicant found that if the guard plate 1 is too thin, its strength will be reduced after contacting with the molten steel due to the high temperature, and it will become soft and deformed, and cannot play the role of protecting the corners; if the guard plate 1 is too thick, it will hinder the flow of molten steel in the crystallizer. After a long period of tracking and comparison, the applicant finally selected white ice iron sheet with a thickness of 0.5 mm as the material of the guard plate 1, which can ensure both strength and fluidity of the molten steel.

[0025] On the basis of the above embodiment, in order to further improve the placement stability of the guard plate 1 at the corner of the crystallizer, a rear support plate 12 is vertically fixed at the top corner of the guard plate 1, and the rear support plate 12 is in surface contact with the side wall of the narrow edge 32, and its supporting surface is larger.

[0026] In order to improve the sealing and fitting effect between the two front end edges of the guard plate 1 and the side wall of the wide side 31 and ensure the slag blocking effect, two specific implementation modes are designed in this specific embodiment. The first specific implementation mode is: a slope 14 for fitting with the inner wall of the wide side 31 of the crystallizer is arranged at the two front end edges of the guard plate 1; the second specific implementation mode is: a fold line plate 13 for fitting with the inner wall of the wide side 31 of the crystallizer is arranged at the two front ends of the guard plate 1, and multiple outer top angle edges of the fold line plate 13 are in contact with the side wall of the wide side 31, forming multiple slag blocking lines, thereby ensuring the slag blocking effect.

[0027] In the present utility model, "upper", "lower", "front", "back", "left" and "right" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0028] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0029] The above description in combination with the accompanying drawings has detailed the preferred implementation modes and embodiments of the utility model, but the utility model is not limited to the above implementation modes and embodiments. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the concept of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A new type of pouring protection component for continuous casting crystallizer, characterized in that: It includes a guard plate and a guard plate placement support portion. The cross-section of the guard plate is a V-shaped structure. A guard plate placement support portion is fixedly arranged on both sides of the bottom of the guard plate. A plurality of through holes distributed along the vertical direction are arranged in the middle of the guard plate. The guard plate and the guard plate placement support portion are both made of iron material.

2. A new type of continuous casting mold pouring protection component according to claim 1, characterized in that: The guard plate placement support portion includes a connecting net and a supporting block. The connecting net is fixedly connected to the bottom of the guard plate, and the upper part of the supporting block is fixedly connected to the lower part of the connecting net.

3. A new type of continuous casting mold pouring protection component according to claim 2, characterized in that: When the guard plate is stably placed at the corresponding pouring protection position of the crystallizer, the angle α between the outer wall of the guard plate and the inner wall of the wide side of the crystallizer is 25°≤α≤35°.

4. A new type of continuous casting mold pouring protection component according to claim 3, characterized in that: The guard plate is made of 0.5mm thick tin plate.

5. A new type of continuous casting mold pouring protection component according to claim 4, characterized in that: A rear support plate is vertically fixedly arranged at the top corner of the guard plate.

6. A new type of continuous casting mold pouring protection component according to claim 5, characterized in that: A slope for fitting with the inner side wall of the wide side of the crystallizer is arranged at the two front end edges of the guard plate.

7. A new type of continuous casting mold pouring protection component according to claim 5, characterized in that: A folding plate for fitting with the inner side wall of the wide side of the crystallizer is arranged at the two front ends of the guard plate.

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