Double-argon environment-friendly shield for steel ladle pouring

Abstract

The utility model discloses a double-argon environment-friendly protective cover for steel ladle pouring, which is characterized in that two argon rings (2) which are coaxially arranged are arranged in a protective cover (1), each argon ring (2) is provided with an air inlet (3) and a plurality of air outlets (4) which are circumferentially distributed, and a plurality of auxiliary lamps (5) which emit light downwards are arranged on the outer side of the protective cover (1); the outer side of the protective cover (1) is wrapped with a heat resisting ring (6), a plurality of blind holes (7) which are evenly distributed in the circumferential direction are formed in the bottom face of the heat resisting ring (6), and the auxiliary lamps (5) are located in the blind holes (7) respectively. And a heat insulation plate (8) fixed with the heat insulation ring (6) is arranged below the auxiliary lamp (5) and is made of a transparent material. The steel ladle centering device has the advantages that the molten steel pouring quality can be improved, the steel ladle centering time can be shortened, and the steel ladle centering alignment and low maintenance frequency can be ensured.

Description

Technical Field

[0001] The utility model belongs to the field of ladle protection covers, in particular to a double argon ring protection cover used for ladle casting. Background Art

[0002] The ladle, such as the 30T ladle used in the converter, has a water inlet at the bottom. The smelted molten steel is discharged from the water inlet and guided into the mold through the center column tube to form an ingot.

[0003] During the ladle pouring process, direct contact between molten steel and air can lead to oxidation, slag inclusion, and other problems. This not only affects steel quality but also increases the cost and difficulty of subsequent processing. Furthermore, with the growing market demand for high-quality steel, effectively protecting molten steel from contamination during the pouring process has become a pressing issue for steel companies.

[0004] In the existing ladle pouring process, a tubular protective cover is used. An argon ring is provided on the inner side of the protective cover. The argon ring is provided with an air inlet and multiple air outlets. Before the ladle is poured, the protective cover is first set at the water inlet of the ladle. Argon enters the argon ring from the air inlet and is ejected from multiple air outlets at the same time, filling the protective cover, that is, filling the space between the water inlet and the center column tube, so that the molten steel is wrapped in the protective gas atmosphere as much as possible, which can reduce the oxidation of the molten steel and slag inclusion.

[0005] However, the following problems were found in practice: First, the concentration of argon gas in the protective cover is low, and oxidation of molten steel and slag inclusion may still occur, and the quality of molten steel pouring still needs to be improved; Second, the centering of the ladle during the production process is a link that production personnel must pay attention to. The faster and more accurate the centering, the faster and more stable the steel pouring process will be. At present, we only rely on feeling to judge whether the ladle nozzle is well aligned with the center column tube. The centering takes a long time and it is difficult to ensure alignment. Utility Model Content

[0006] The purpose of the utility model is to provide a double argon ring protective cover for ladle pouring. The utility model has the advantages of improving the quality of molten steel pouring, reducing the time of ladle centering, ensuring the ladle's centering and alignment, and reducing the maintenance frequency.

[0007] The technical solution of the utility model is: a double argon ring protective cover for ladle casting, wherein two coaxially arranged argon rings are provided in the protective cover, the argon rings are provided with an air inlet and multiple circumferentially distributed air outlets, and the outer side of the protective cover is provided with multiple auxiliary lamps that emit light downward.

[0008] In the aforementioned double argon ring protective cover for ladle casting, the outer side of the protective cover is covered with a heat-resistant ring, and a plurality of circumferentially evenly distributed blind holes are provided on the bottom surface of the heat-resistant ring, and a plurality of auxiliary lamps are respectively located in the plurality of blind holes.

[0009] In the aforementioned double argon ring protective cover for ladle pouring, a heat insulation plate fixed to the heat-resistant ring is provided below the auxiliary lamp, and the heat insulation plate is made of transparent material.

[0010] In the aforementioned double argon ring protective cover for ladle pouring, a heat-insulating cavity is formed between the auxiliary lamp and the heat-insulating plate.

[0011] In the aforementioned double argon ring protective cover for ladle casting, a protective sleeve is provided on the outer side of the heat-resistant ring.

[0012] In the aforementioned double argon ring protective cover for ladle pouring, the gas inlet extends to the radial outside of the protective cover.

[0013] Compared with the prior art, the present invention has made the following improvements on the existing protective cover:

[0014] 1) Increasing the number of argon rings from one to two not only increases the supply of argon, increases the argon concentration, but also increases the coverage range of argon, thereby better avoiding the problems of molten steel oxidation, slag inclusion, and improving the pouring quality of molten steel.

[0015] 2) Multiple downward-facing auxiliary lights are installed on the outside of the protective cover. The auxiliary lights form light spots on the center column, providing workers with an intuitive reference. Workers can accurately and quickly determine the offset direction of the ladle and make corresponding adjustments, thereby shortening the centering time and ensuring alignment.

[0016] 3) Furthermore, by placing the auxiliary lamp in the heat-resistant ring and providing a heat-insulating plate made of transparent material, the influence of the molten steel temperature on the auxiliary lamp is reduced during the watering stage, thereby increasing the service life of the auxiliary lamp and reducing the maintenance frequency.

[0017] In summary, the utility model has the advantages of improving the quality of molten steel pouring, reducing the time for centering the ladle, ensuring the centering and alignment of the ladle, and reducing the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front sectional schematic diagram of the present utility model.

[0019] Figure 2 It is a top view schematic diagram of the present utility model.

[0020] The markings in the accompanying drawings are: 1-protective cover, 2-argon ring, 3-air inlet, 4-air outlet, 5-auxiliary lamp, 6-heat-resistant ring, 7-blind hole, 8-heat insulation board, 9-heat insulation cavity, 10-protective cover. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] Example. A double argon ring protective cover for ladle casting, such as Figure 1 and Figure 2 As shown, two coaxially arranged argon rings 2 are provided in the protective cover 1 , and the argon ring 2 is provided with an air inlet 3 and twelve circumferentially distributed air outlets 4 , and the air inlet 3 extends to the radial outside of the protective cover 10 .

[0023] The outer side of the protective cover 1 is covered with a heat-resistant ring 6, which is made of a material with good heat-insulating properties. A protective sleeve 10 is provided on the outer side of the heat-resistant ring 6. When the heat-resistant ring 6 itself is strong enough, the protective sleeve 10 can be directly fixed to the heat-resistant ring 6. When the heat-resistant ring 6 itself is weak, the protective sleeve 10 can be fixed to the protective cover 1 by a connecting rod passing through the heat-resistant ring 6. Four circumferentially evenly distributed blind holes 7 are provided on the bottom surface of the heat-resistant ring 6. Auxiliary lamps 5 for emitting light downward are provided in the blind holes 7. A heat-insulating plate 8 fixed to the heat-resistant ring 6 is provided below the auxiliary lamp 5. The heat-insulating plate 8 is made of heat-resistant glass, and a heat-insulating cavity 9 is formed between the auxiliary lamp 5 and the heat-insulating plate 8.

[0024] Instructions for Use: The protective cover is fixed to the ladle's outlet. When the ladle is aligned with the center column, the auxiliary light forms four light spots on the upper end of the center column. The alignment is determined by observing the equal distances between the four light spots and the outer wall of the center column, allowing for appropriate adjustments. The excellent reference (light spots) ensures rapid and accurate alignment. During pouring, connect the air inlet 3 to an argon source to supply argon to the protective cover 1. The simultaneous supply of argon by the two argon rings 2 significantly increases the argon concentration within the protective cover, preventing oxidation of the molten steel and slag inclusion.

[0025] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A double argon ring protective cover for ladle casting, characterized by: Two coaxially arranged argon rings (2) are provided in the protective cover (1), an air inlet (3) and a plurality of circumferentially distributed air outlets (4) are provided on the argon ring (2), and a plurality of auxiliary lamps (5) emitting light downward are provided on the outer side of the protective cover (1); the outer side of the protective cover (1) is covered with a heat-resistant ring (6), a plurality of circumferentially evenly distributed blind holes (7) are provided on the bottom surface of the heat-resistant ring (6), and the plurality of auxiliary lamps (5) are respectively located in the plurality of blind holes (7).

2. The double argon ring protective cover for ladle casting according to claim 1, characterized in that: A heat insulation board (8) fixed to the heat-resistance ring (6) is provided below the auxiliary lamp (5), and the heat insulation board (8) is made of a transparent material.

3. The double argon ring protective cover for ladle casting according to claim 2, characterized in that: A heat insulation cavity (9) is formed between the auxiliary lamp (5) and the heat insulation plate (8).

4. The double argon ring protective cover for ladle casting according to claim 2 or 3, characterized in that: A protective sleeve (10) is provided on the outer side of the heat-resisting ring (6).

5. The double argon ring protective cover for ladle casting according to claim 4, characterized in that: The air inlet (3) extends to the radial outside of the protective sleeve (10).

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