A device for argon protection in steel ingot casting

Abstract

The utility model discloses a kind of argon protection devices for steel ingot pouring, comprising: ladle, protection component;Ladle includes downcomer;Protection component includes the protection tube of downcomer bottom movable installation, the first protection cavity and the second protection cavity and the third protection cavity arranged in protection tube, the air inlet pipe of first protection cavity left side fixed connection, the upper conducting port of first protection cavity right side lower portion opening.The argon protection device for steel ingot pouring of the utility model, the argon gas that can be filled into in the air inlet pipe outside protection tube, after first protection cavity in protection tube can be filled again, and along the upper conducting port of lower end and lower conducting port, second protection cavity and third protection cavity are filled in turn, so that to make that multiple argon gas rings can be formed in protection tube, to carry out uniform protection to the molten steel of middle blanking, simultaneously, protection tube and downcomer are connected between by the flange connection structure of convenient disassembly and assembly, protection tube can also be made to be convenient to disassemble and replace after being damaged.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical engineering technology, specifically to an argon gas protection device for steel ingot casting. Background Technology

[0002] In metallurgical engineering, steel ingots are products obtained by pouring molten steel into an ingot mold through a steel ladle and allowing it to solidify. During the casting process, the steel flow comes into direct contact with air, causing secondary oxidation of the molten steel and air absorption by the molten steel. This can easily lead to fluctuations in the internal quality of the steel ingot and result in layering defects at the tail end of the ingot.

[0003] Existing argon gas protection devices for steel ingot casting, such as the argon gas protection device for the ladle outlet of a steel ingot disclosed in publication number CN222660115U, can isolate the air around the ladle outlet during the casting process and prevent external air from entering the molten steel and causing secondary oxidation of the molten steel. However, this protection device is not convenient to form multiple argon gas protection structures, which makes its protection effect poor. Therefore, we propose an argon gas protection device for steel ingot casting. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows: An argon gas protection device for steel ingot casting includes: a steel ladle and a protection assembly; the steel ladle includes a drain pipe; the protection assembly includes a protection pipe movably installed at the bottom of the drain pipe, a first protection chamber, a second protection chamber, and a third protection chamber arranged inside the protection pipe, an air inlet pipe fixedly connected to the left side of the first protection chamber, an upper conduction port opened at the lower right side of the first protection chamber, and a lower conduction port opened at the lower left side of the second protection chamber.

[0006] Preferably, an exhaust port is also provided on the lower right side of the third protective cavity.

[0007] Preferably, a baffle is fixedly installed on the left side of the first protective cavity, and the baffle is located inside the air intake pipe.

[0008] Preferably, the outer end of the air intake pipe is also fixedly connected to a threaded connection port.

[0009] Preferably, a lower flange is fixedly connected to the top of the protective pipe, and an upper flange is fixedly connected to the bottom of the drain pipe.

[0010] Preferably, multiple sets of bolts are also locked between the lower flange and the upper flange.

[0011] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows: 1. In this utility model, the argon gas introduced into the air inlet pipe outside the protective tube can fill the first protective cavity inside the protective tube, and then fill the second and third protective cavities in sequence along the upper and lower conduction ports at the lower end, so that a multi-layer argon gas ring can be formed inside the protective tube, thereby uniformly protecting the molten steel being fed in the middle. 2. In this utility model, the protective pipe and the drain pipe are connected by a flange structure that is easy to disassemble and assemble, which also makes it easy to disassemble and replace the protective pipe after it is damaged. Attached Figure Description

[0012] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a disassembly diagram of the protective tube of this utility model; Figure 3 This is a structural diagram of the protective tube of this utility model; Figure 4 This is a cross-sectional view of the protective tube of this utility model.

[0013] Figure label: 100. Steel ladle; 101. Drain pipe; 200. Protective component; 201. Protective tube; 202. First protective chamber; 203. Second protective chamber; 204. Third protective chamber; 205. Inlet pipe; 206. Upper conduction port; 207. Lower conduction port; 208. Exhaust port; 209. Baffle; 210. Threaded connection port; 211. Lower flange; 212. Upper flange; 213. Bolt. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0015] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, an argon gas protection device for steel ingot casting.

[0016] Example 1: Combination Figure 1-4As shown, the present invention provides an argon gas protection device for steel ingot casting, comprising: a ladle 100 and a protection component 200; the ladle 100 includes a drain pipe 101; the protection component 200 includes a protection pipe 201 movably installed at the bottom of the drain pipe 101, a first protection cavity 202, a second protection cavity 203, and a third protection cavity 204 arranged inside the protection pipe 201, an air inlet pipe 205 fixedly connected to the left side of the first protection cavity 202, an upper conduction port 206 opened at the lower right side of the first protection cavity 202, and a second protection cavity 204. 3. A lower conduction port 207 is opened on the lower left side. An exhaust port 208 is also opened on the lower right side of the third protective cavity 204. A baffle 209 is fixedly installed on the left side inside the first protective cavity 202, and the baffle 209 is located inside the air intake pipe 205. A threaded connection port 210 is fixedly connected to the outer end of the air intake pipe 205. A lower flange 211 is fixedly connected to the top of the protective pipe 201. An upper flange 212 is fixedly connected to the bottom of the drain pipe 101. Multiple sets of bolts 213 are locked between the lower flange 211 and the upper flange 212.

[0017] Specifically, during the steel ingot casting process, the steel flow comes into direct contact with air, causing secondary oxidation and air absorption by the molten steel. This can easily lead to fluctuations in the internal quality of the steel ingot, resulting in layering defects at the tail end. Therefore, argon gas is required to protect the molten steel during casting. The argon gas introduced into the air inlet pipe 205 outside the bottom protective pipe 201 of the water pipe 101 can fill the first protective cavity 202 inside the protective pipe 201, and then sequentially fill the second protective cavity 203 and the third protective cavity 204 along the upper conduction port 206 and lower conduction port 207 at the lower end. This allows a multi-layered argon gas ring to be formed inside the protective pipe 201, thereby uniformly protecting the molten steel being poured from the middle. The first protective cavity 202 has an inverted conical structure. The second protective chamber 203 and the third protective chamber 204 both have large protective spaces, and the molten steel flowing down is not easily filled into the conical space. The protective pipe 201 and the drain pipe 101 are connected by a flange structure that is easy to disassemble and install, which also makes it easy to disassemble and replace the protective pipe 201 if it is damaged. The exhaust port 208 opened at the bottom right side of the third protective chamber 204 is mainly used for exhaust. The baffle 209 fixedly installed in the first protective chamber 202 is mainly used to block the argon gas transported by the air inlet pipe 205 to prevent the argon gas from directly impacting the molten steel flowing down in the middle and affecting the stable pouring of the molten steel. The threaded connection port 210 at the outer end of the air inlet pipe 205 is mainly used for connecting external pipes for the transport of argon gas.

[0018] Working principle and usage process of this utility model: When molten steel is poured into the ladle 100, argon gas introduced into the air inlet pipe 205 outside the protective pipe 201 will sequentially fill the first protective cavity 202, the second protective cavity 203, and the third protective cavity 204 in the protective pipe 201. This forms multiple sets of argon gas protective rings outside the downward flow space of the molten steel in the middle of the protective pipe 201, thereby reducing the oxidation of the molten steel and providing uniform protection for the molten steel being poured. At the same time, the spiral connection structure formed between the first protective cavity 202, the second protective cavity 203, and the third protective cavity 204 also allows the argon gas transported in the air inlet pipe 205 to expel other air from the first protective cavity 202, the second protective cavity 203, and the third protective cavity 204, while keeping the cavity full of argon gas, thereby improving the protective effect.

[0019] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An argon gas protection device for steel ingot casting, characterized in that, include: Steel ladle (100), protective components (200); The steel ladle (100) includes a drain pipe (101); The protective assembly (200) includes a protective pipe (201) movably installed at the bottom of the drain pipe (101), a first protective cavity (202), a second protective cavity (203) and a third protective cavity (204) arranged inside the protective pipe (201), an air inlet pipe (205) fixedly connected to the left side of the first protective cavity (202), an upper conduction port (206) opened at the lower right side of the first protective cavity (202), and a lower conduction port (207) opened at the lower left side of the second protective cavity (203).

2. The argon gas protection device for steel ingot casting according to claim 1, characterized in that, An exhaust port (208) is also provided on the lower right side of the third protective cavity (204).

3. The argon gas protection device for steel ingot casting according to claim 1, characterized in that, A baffle (209) is also fixedly installed on the left side of the first protective cavity (202), and the baffle (209) is located inside the air inlet pipe (205).

4. The argon gas protection device for steel ingot casting according to claim 1, characterized in that, The outer end of the air intake pipe (205) is also fixedly connected to a threaded connection port (210).

5. The argon gas protection device for steel ingot casting according to claim 1, characterized in that, The top of the protective pipe (201) is also fixedly connected to a lower flange (211), and the bottom of the drain pipe (101) is also fixedly connected to an upper flange (212).

6. The argon gas protection device for steel ingot casting according to claim 5, characterized in that, Multiple sets of bolts (213) are also locked between the lower flange (211) and the upper flange (212).

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