High-temperature molten steel sampler

Abstract

The utility model discloses a high-temperature molten steel sampler, which belongs to the technical field of molten steel sampling, and is characterized in that gas can be smoothly discharged through an air hole plug, and molten steel cannot pass through the air hole plug due to higher viscosity, so that the forming quality of a sample is ensured, and air holes or defects in the sample are avoided. The high-temperature molten steel sampler comprises a refractory mortar sampler body, a first sampling cavity is formed in the refractory mortar sampler body, a second sampling cavity is formed in one end of the first sampling cavity, an air hole is horizontally formed in the refractory mortar sampler body, and an exhaust hole is formed in the end, away from the second sampling cavity, of the air hole and extends out of the refractory mortar sampler body. A second molten steel inlet chamber is formed in the end, away from the second sampling cavity, of the refractory mortar sampler, a sealing steel sheet is embedded in the second molten steel inlet chamber, a bottom steel sheet is installed at the end, away from the second sampling cavity, of the refractory mortar sampler, and a first molten steel inlet chamber is arranged between the bottom steel sheet and the sealing steel sheet.

Description

Technical Field

[0001] This utility model belongs to the field of molten steel sampling technology, specifically relating to a high-temperature molten steel sampler. Background Technology

[0002] In the metallurgical industry, the quality inspection of molten steel is a crucial step in the steel production process. To ensure that the chemical composition of the steel meets production requirements, samples need to be taken from the high-temperature molten steel during steelmaking. However, existing high-temperature molten steel samplers have many shortcomings, especially the frequent presence of large pores inside the samples after sampling, which affects the accuracy of sample testing. This deficiency forces operators to take multiple samples to obtain samples that meet analytical requirements, resulting in low sampling efficiency. This not only increases the complexity of smelting operations but also prolongs smelting time and disrupts the production rhythm.

[0003] The main reason for the formation of pores inside the sample in existing molten steel samplers is their design flaws, such as insufficient air permeability and unreasonable sampling channels. This results in the molten steel flowing into the sample chamber, where gases in the sampling channel repel the molten steel from entering, and soluble gaseous elements in the steel cannot be expelled in time during solidification, thus forming pores in the sample. Therefore, a high-temperature molten steel sampler with a reasonable structure and good air permeability is needed to help solve this problem. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-temperature molten steel sampler. In this high-temperature molten steel sampler, gas can be smoothly discharged through the vent plug, while molten steel cannot pass through the vent plug due to its high viscosity, thereby ensuring the forming quality of the sample and avoiding the occurrence of pores or defects inside the sample.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a high-temperature molten steel sampler, which includes a refractory clay sampler. The refractory clay sampler has a first sampling chamber inside, and a second sampling chamber is formed at one end of the first sampling chamber. The first and second sampling chambers are internally connected. A vent hole is horizontally formed on the refractory clay sampler, and the second sampling chamber is internally connected to the vent hole. An exhaust port is formed at the end of the vent hole away from the second sampling chamber, extending outwards from the end of the refractory clay sampler. A vent plug is provided at the exhaust port. A second molten steel inlet chamber is formed at the end of the refractory clay sampler away from the second sampling chamber, and a sealing steel plate is embedded in the second molten steel inlet chamber. A bottom steel plate is installed at the end of the refractory clay sampler away from the second sampling chamber, and a first molten steel inlet chamber is formed between the bottom steel plate and the sealing steel plate.

[0008] Furthermore, the second molten steel inlet chamber, the first sampling chamber, and the second sampling chamber are internally connected. Quartz glass is provided to cover the inner sides of the second molten steel inlet chamber, the first sampling chamber, and the second sampling chamber. The quartz glass covers the sample chamber to protect its integrity and provides good thermal shock resistance in high-temperature environments.

[0009] Furthermore, the second molten steel enters the chamber in a sideways funnel shape.

[0010] Furthermore, the first sampling chamber has a disc-shaped interior, while the second sampling chamber has a long strip-shaped interior. The first sampling chamber is the main sample chamber, used to form disc-shaped samples for subsequent component analysis and quality testing. The second sampling chamber is used to form long-handled samples, which facilitates sample clamping and processing, and can also serve as a spare sample.

[0011] Furthermore, the vent plug is embedded in the exhaust port of the vent hole. The vent plug is made of a porous high-temperature resistant material and has selective permeability. It allows gas to escape smoothly during the sampling process, but prevents molten steel from passing through, thus ensuring the integrity of the sample.

[0012] Furthermore, the material of the vent plug can be one of alumina ceramic, silicon nitride ceramic, or glass ceramic.

[0013] Furthermore, a handle is installed at the end of the refractory clay sampler furthest from the bottom steel plate. The end of the handle furthest from the sampler has a grip groove for finger holding. This handle facilitates safe and stable insertion of the sampler into the high-temperature molten steel by the operator, and allows for quick removal after sampling.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention utilizes the cooperation between two sets of vent holes and vent plugs inside the refractory clay sampler. Gases within the molten steel are released during the cooling and solidification process. These gases exit the sample chamber through the vent holes and the vent plugs, while the molten steel, due to its high viscosity, cannot pass through them. This ensures the quality of the sample's formation, avoids the formation of pores or defects within the sample, and allows for smooth gas discharge during sampling. This improves sampling efficiency, results in better sample formation quality, reduces the need for multiple samplings, and saves smelting time.

[0017] This invention, by providing quartz glass covering the first molten steel inlet chamber, the second molten steel inlet chamber, the first sampling chamber, and the second sampling chamber, can protect the integrity of the sample chamber during operation and has good thermal shock resistance in high-temperature environments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a longitudinal sectional view of the present invention;

[0021] Figure 3 This is a longitudinal sectional view of the present invention from another perspective.

[0022] The markings in the attached diagram are as follows: 1. Bottom steel plate; 2. Quartz glass; 3. First molten steel inlet chamber; 4. Sealing steel plate; 5. Second molten steel inlet chamber; 6. First sampling chamber; 7. Second sampling chamber; 8. Vent hole; 9. Vent hole plug; 10. Refractory clay sampler; 11. Handle; 111. Grip groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This specific embodiment is a high-temperature molten steel sampler, such as... Figure 1 , Figure 2 and Figure 3 As shown, the high-temperature molten steel sampler includes a refractory mud sampler 10, used to seal all connecting parts of the sampler to prevent leakage of molten steel during sampling. The refractory mud sampler 10 has a first sampling chamber 6 inside, and a second sampling chamber 7 is opened at one end of the first sampling chamber 6. The first sampling chamber 6 and the second sampling chamber 7 are internally connected. The first sampling chamber 6 is disc-shaped to form a disc-shaped sample for subsequent component analysis and quality testing. The second sampling chamber 7 is elongated to form a long-handled sample, facilitating sample clamping and handling, and can also serve as a spare sample. A vent hole 8 is horizontally opened on the top of the refractory mud sampler 10, and the second sampling chamber 7 is internally connected to the vent hole 8. An exhaust port is provided at the end of the refractory mud sampler 10 that is away from the second sampling chamber 7. A vent plug 9 is provided at the exhaust port. The vent plug 9 is embedded in the exhaust port of the vent 8. The vent plug 9 is made of a porous high-temperature resistant material. The material of the vent plug 9 can be one of alumina ceramic, silicon nitride ceramic, or glass ceramic. A second molten steel inlet chamber 5 is provided at the end of the refractory mud sampler 10 that is away from the second sampling chamber 7. The second molten steel inlet chamber 5 is shaped like a sideways funnel. A sealing steel plate 4 is embedded in the second molten steel inlet chamber 5. A bottom steel plate 1 is installed at the end of the refractory mud sampler 10 that is away from the second sampling chamber 7. A first molten steel inlet chamber 3 is provided between the bottom steel plate 1 and the sealing steel plate 4.

[0025] By coordinating the two sets of vent holes 8 and vent plugs 9 inside the refractory mud sampler 10, the gas in the molten steel is released during the cooling and solidification process. This gas is discharged from the sample chamber through the vent holes 8 and can be discharged smoothly through the vent plugs 9. However, due to its high viscosity, the molten steel cannot pass through the vent plugs, thus ensuring the sample forming quality and avoiding the formation of pores or defects inside the sample. This allows the gas to be discharged smoothly during the sampling process, preventing pores from forming inside the sample, improving sampling efficiency, resulting in better sample forming quality, reducing the need for multiple samplings, and saving smelting time.

[0026] The second molten steel inlet chamber 5, the first sampling chamber 6, and the second sampling chamber 7 are internally connected, and quartz glass 2 is provided on the inner side of the second molten steel inlet chamber 5, the first sampling chamber 6, and the second sampling chamber 7.

[0027] By setting quartz glass 2 to cover the first molten steel inlet chamber 3, the second molten steel inlet chamber 5, the first sampling chamber 6 and the second sampling chamber 7, the integrity of the sample chamber can be protected during operation, and it has good thermal shock resistance in high-temperature environments.

[0028] The refractory clay sampler 10 is equipped with a handle 11 at the end away from the bottom steel plate 1. The end of the handle 11 away from the refractory clay sampler 10 is provided with a grip groove 111 for fingers to hold. The handle 11 makes it easy for operators to safely and stably insert the sampler into the high-temperature molten steel and quickly remove it after sampling.

[0029] Working principle:

[0030] During operation, the operator holds the sampler handle 11 and inserts the sampler into the high-temperature molten steel in the steelmaking furnace or during the casting process. The bottom steel plate 1 of the sampler first contacts the molten steel. When the bottom steel plate 1 contacts the high-temperature molten steel, it melts rapidly, forming a channel for the molten steel to enter. The molten steel flows through the first molten steel inlet chamber 3 to the sealing steel plate 4. At this time, the sealing steel plate 4 gradually melts under the action of the high-temperature molten steel, allowing the molten steel to further flow into the second molten steel inlet chamber 5. After the sealing steel plate melts, the molten steel sequentially fills the first sampling chamber 6 and the second sampling chamber 5. The first sampling chamber 6 and the second sampling chamber 7 form two complete samples. During the process of molten steel flowing into the first sampling chamber 6 and the second sampling chamber 7 and starting to solidify, the gases that may be contained in the molten steel will be released during the cooling and solidification process. These gases will be discharged from the sample chamber through the vent 8. The vent plug 9 is made of porous high-temperature resistant material and has good selective permeability. The gas can be discharged smoothly through the vent plug 9, while the molten steel cannot pass through the vent plug due to its high viscosity. This ensures the forming quality of the sample and avoids the appearance of pores or defects inside the sample.

[0031] All technical features in this embodiment can be freely combined according to actual needs.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature molten steel sampler, comprising a refractory mud sampler (10), characterized in that, The refractory clay sampler (10) has a first sampling chamber (6) inside, and a second sampling chamber (7) is opened at one end of the first sampling chamber (6). The first sampling chamber (6) and the second sampling chamber (7) are connected internally. A vent hole (8) is horizontally opened on the refractory clay sampler (10). The second sampling chamber (7) is connected internally to the vent hole (8). The end of the vent hole (8) away from the second sampling chamber (7) extends out of the refractory clay sampler (10). One end is provided with an exhaust hole, and a vent plug (9) is provided at the exhaust hole. The end of the refractory mud sampler (10) away from the second sampling chamber (7) is provided with a second molten steel inlet chamber (5). A sealing steel plate (4) is embedded in the second molten steel inlet chamber (5). A bottom steel plate (1) is installed at the end of the refractory mud sampler (10) away from the second sampling chamber (7). A first molten steel inlet chamber (3) is provided between the bottom steel plate (1) and the sealing steel plate (4).

2. The high-temperature molten steel sampler according to claim 1, characterized in that, The second molten steel inlet chamber (5), the first sampling chamber (6) and the second sampling chamber (7) are connected internally, and quartz glass (2) is provided on the inner side of the second molten steel inlet chamber (5), the first sampling chamber (6) and the second sampling chamber (7).

3. A high-temperature molten steel sampler according to claim 2, characterized in that, The second molten steel enters the chamber (5) in a sideways funnel shape.

4. A high-temperature molten steel sampler according to claim 1, characterized in that, The first sampling chamber (6) has a disc-shaped interior, while the second sampling chamber (7) has a long strip-shaped interior.

5. A high-temperature molten steel sampler according to claim 1, characterized in that, The vent plug (9) is embedded in the exhaust port of the vent (8), and the vent plug (9) is made of a porous high-temperature resistant material.

6. A high-temperature molten steel sampler according to claim 5, characterized in that, The material of the vent plug (9) can be one of alumina ceramic, silicon nitride ceramic, or glass ceramic.

7. A high-temperature molten steel sampler according to claim 1, characterized in that, The refractory clay sampler (10) has a handle (11) installed at the end away from the bottom steel plate (1), and the handle (11) has a grip groove (111) for fingers to hold at the end away from the refractory clay sampler (10).

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