Nitrogen control device used in wire rod continuous casting process

Abstract

The nitrogen control device used in the wire rod continuous casting process comprises a rubber pad, a sealing block and a connecting layer, the sealing block is installed on one side of the rubber pad, an outlet is formed in one side of a shell, a filtering structure is installed in the outlet, and the filtering structure comprises a first connecting block, a second connecting block and a filtering net. And the first connecting block is mounted in the outlet. The first connecting block is arranged in the outlet, the first connecting block and the second connecting block form a clamping structure, the clamping structure is convenient to disassemble, the filter screen can be assembled by clamping the second connecting block into the first connecting block, the filter screen can be replaced, and when the filter screen is not needed, the filter screen can be disassembled by disassembling the second connecting block, so that the filter screen is convenient to disassemble. According to the nitrogen control device used in the wire rod continuous casting process, fine and dense holes are formed in the filter screen, the filter screen can filter blown-out gas, dust or impurities are prevented from being blown out to affect machining of steel materials, and therefore the purpose that the nitrogen control device used in the wire rod continuous casting process conveniently filters the blown-out gas is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous casting processing, in particular to a nitrogen control device used in the process of wire rod continuous casting. Background Art

[0002] The wire breaking rate of ER50-6, LX72A, LX82A and other steels produced by Beiying Steel Plant is unevenly distributed during customer drawing. According to on-site investigation and feedback, the wear degree of drawing abrasives also fluctuates greatly. By comparing the broken wire batch samples of ER50-6 welding wire with the normal drawing batches, it is found that the strength of the broken wire batches is not only 20-40MPa higher, but also the nitrogen content of the wire rod fluctuates greatly. It is found that the nitrogen addition amount in the continuous casting link is irregular and fluctuates greatly. The wire breaking problem of this type of product not only makes the product rated as the third grade, but also seriously affects the customer The user's confidence has restricted the increase in supply and the development of new varieties. The empty matching test of the large ladle water inlet and the medium ladle long water inlet is normal, but after adding the sealing ring, it is found that there is a 2-4mm cavity between the large ladle water inlet and the upper mouth of the long water inlet bowl, and with the increase of the life of the long water inlet and the burning of the water inlet bowl, the cavity size increases to 3-13mm and presents an irregular cavity height, which causes the molten steel to flow back here and damage the sealing gasket and the sealing effect; (2) When the protective pouring argon pressure is lower than 0.5MPa, the nitrogen increase fluctuates significantly, and when it is lower than 0.4MPa, the nitrogen increase is significantly aggravated, and the nitrogen increase even exceeds 0.0015%.

[0003] However, there are still some problems with the existing nitrogen control device used in the wire rod continuous casting process, and the specific problems are as follows:

[0004] 1. A nitrogen control device used in the wire rod continuous casting process has a problem that it is difficult to filter the blown gas. The blown gas will be blown out with impurities and dust inside. The blown gas needs to be filtered to prevent impurities from being blown out and affecting the processing of steel materials.

[0005] 2. A nitrogen control device used in the wire rod continuous casting process has a problem that it is difficult to strengthen the structural strength of the shell. The structural strength of the shell is not strong enough and the shell may be damaged during use, which requires strengthening the structural strength of the shell. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] The utility model aims to provide a nitrogen control device for wire rod continuous casting process, so as to solve the defects of the existing nitrogen control device for wire rod continuous casting process that it is difficult to filter the blown gas and difficult to strengthen the shell structure strength. (II) Utility Model Content

[0009] In order to solve the above technical problems, the utility model provides the following technical solutions: a nitrogen control device for use in a wire rod continuous casting process, comprising a rubber pad, a sealing block and a connecting layer, wherein a sealing block is installed on one side of the rubber pad;

[0010] A sealing structure is installed inside the sealing block, a shell is installed on one side of the sealing block, a wear-resistant layer is installed on the outer side of the shell, a reinforcement structure is arranged inside the shell, and a connecting layer is arranged on the inner side of the shell;

[0011] A sealing gasket is arranged on the inner side of the connection layer, an outlet is installed on one side of the shell, and a filtering structure is installed inside the outlet. The filtering structure includes a first connection block, a second connection block and a filter screen, and the first connection block is installed inside the outlet.

[0012] When in use, firstly, on the basis of the original sealing gasket, an annular gasket is added to the bottom of the sealing gasket and finally a thickened one-piece sealing gasket is formed. The thickness is increased to fifteen millimeters, which solves the problem of sprue cavity. The argon pressure of the large ladle long sprue protection pouring is controlled within the range of 0.6-0.8MPa. Compared with the traditional technology, this patent can further reduce the nitrogen content in the continuous casting large ladle link, and the nitrogen increase amount is steadily reduced from the original average of 0.0012% to within 0.0003%, so that the wire products cord steel, welding wire steel, and stranded wire steel avoid the problem of wire breakage in the drawing section due to high nitrogen content, increased hardness and brittleness, and reduced plasticity and toughness, ensuring that the product quality has strong competitiveness in the market. At the same time, the ideas and methods that achieve obvious results through the improvement of subtle links also provide direction for the control of nitrogen increase in other process links.

[0013] Preferably, the sealing structure includes a first sealing ring, a second sealing ring, a first sealing groove and a second sealing groove, the second sealing groove is arranged inside the sealing block, the second sealing groove is arranged inside the second sealing groove, the first sealing groove is arranged inside the sealing block, the first sealing ring and the second sealing ring inside the first sealing groove and the second sealing groove can be made of rubber material, the outer diameters of the first sealing ring and the second sealing ring are smaller than the inner diameters of the first sealing groove and the second sealing groove, and the first sealing ring and the second sealing ring can enhance the sealing inside the sealing block.

[0014] Preferably, a first sealing ring is arranged inside the first sealing groove, and the outer diameter of the first sealing ring is smaller than the inner diameter of the first sealing groove. The first sealing ring and the second sealing ring can enhance the sealing performance inside the sealing block.

[0015] Preferably, one side of the first connecting block is movably connected to the second connecting block, and a filter is provided on the inner side of the second connecting block. The filter can be replaced. When the filter is not needed, the filter can be removed by disassembling the second connecting block. The filter is provided with fine holes, and the filter can filter the blown gas to prevent dust or impurities from being blown out and affecting the processing of the steel material.

[0016] Preferably, a card slot is provided on one side of the first connecting block, a card block is provided on one side of the second connecting block, and the first connecting block and the second connecting block form a card-fitting structure, which is easy to disassemble.

[0017] Preferably, the reinforcement structure includes a first reinforcement rib, a second reinforcement rib and a reinforcement layer, the reinforcement layer is arranged inside the outer shell, the first reinforcement rib is arranged inside the reinforcement layer, the second reinforcement rib is arranged inside the reinforcement layer, the first reinforcement rib and the second reinforcement rib are arranged inside the reinforcement layer at equal intervals, the first reinforcement rib and the second reinforcement rib cross each other, the first reinforcement rib and the second reinforcement rib can strengthen the structural strength of the outer shell to prevent damage to the outer shell.

[0018] Preferably, the second reinforcing ribs and the first reinforcing ribs cross each other, the second reinforcing ribs are arranged at equal intervals inside the reinforcement layer, and the first reinforcing ribs and the second reinforcing ribs can be made of steel material.

[0019] (III) Beneficial effects

[0020] The utility model provides a nitrogen control device for a wire rod continuous casting process, which has the advantages that: a first connecting block is arranged inside the outlet, the first connecting block and the second connecting block form a clamping structure, the clamping structure is easy to disassemble, the filter screen can be clamped into the first connecting block through the second connecting block for installation, the filter screen can be replaced, and when the filter screen is not needed, the filter screen can be disassembled by disassembling the second connecting block, and fine holes are arranged on the filter screen, and the filter screen can filter the blown gas to prevent dust or impurities from being blown out and affecting the processing of steel materials, thereby achieving the purpose of filtering the blown gas by the nitrogen control device for the wire rod continuous casting process;

[0021] A reinforcing layer is provided inside the shell, and first reinforcing ribs and second reinforcing ribs are arranged at equal intervals inside the reinforcing layer. The first reinforcing ribs and the second reinforcing ribs cross each other. The first reinforcing ribs and the second reinforcing ribs can be made of steel materials. The first reinforcing ribs and the second reinforcing ribs can strengthen the structural strength of the shell to prevent the shell from being damaged, thereby achieving a nitrogen control device used in a wire rod continuous casting process to facilitate strengthening the structural strength of the shell;

[0022] By arranging a first sealing groove inside the sealing block, the first sealing ring and the second sealing ring inside the first sealing groove and the second sealing groove can be made of rubber material, and the outer diameters of the first sealing ring and the second sealing ring are smaller than the inner diameters of the first sealing groove and the second sealing groove. The first sealing ring and the second sealing ring can enhance the sealing performance inside the sealing block, thereby achieving a nitrogen control device used in the wire rod continuous casting process to facilitate the purpose of enhancing the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0025] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;

[0026] Figure 3 For the utility model Figure 1 A partial cross-section at the center is an enlarged structural diagram;

[0027] Figure 4 It is a three-dimensional structural schematic diagram of the utility model;

[0028] Figure 5 It is a schematic diagram of a partial cross-sectional structure of the filtering structure of the utility model.

[0029] Explanation of the reference numerals in the figure: 1. rubber pad; 2. sealing structure; 201. first sealing ring; 202. second sealing ring; 203. first sealing groove; 204. second sealing groove; 3. sealing block; 4. outer shell; 5. wear-resistant layer; 6. outlet; 7. filtering structure; 701. first connecting block; 702. second connecting block; 703. filter screen; 8. sealing pad; 9. connecting layer; 10. reinforcement structure; 1001. first reinforcing rib; 1002. second reinforcing rib; 1003. reinforcement layer. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] See also Figure 1-5 The utility model provides an embodiment: a nitrogen control device for use in a wire rod continuous casting process, comprising a rubber pad 1, a sealing block 3 and a connecting layer 9, wherein the sealing block 3 is installed on one side of the rubber pad 1.

[0033] A sealing structure 2 is installed inside the sealing block 3, and the sealing structure 2 includes a first sealing ring 201, a second sealing ring 202, a first sealing groove 203 and a second sealing groove 204. The second sealing groove 204 is arranged inside the sealing block 3, and the second sealing ring 202 is arranged inside the second sealing groove 204. The first sealing groove 203 is arranged inside the sealing block 3, and the first sealing ring 201 is arranged inside the first sealing groove 203, and the outer diameter of the first sealing ring 201 is smaller than the inner diameter of the first sealing groove 203.

[0034] Specific embodiment 1, first, the first sealing ring 201 and the second sealing ring 202 inside the first sealing groove 203 and the second sealing groove 204 can be made of rubber material, the outer diameter of the first sealing ring 201 and the second sealing ring 202 is smaller than the inner diameter of the first sealing groove 203 and the second sealing groove 204, the first sealing ring 201 and the second sealing ring 202 can enhance the sealing inside the sealing block 3, and on the basis of the original sealing gasket 8, an annular gasket is added to the bottom of the sealing gasket 8 and finally a thickened one-piece molded sealing gasket 8 is formed, and the thickness is increased to fifteen millimeters, which solves the problem of the sprue cavity, and the argon pressure of the large bag long sprue protection pouring is controlled within the range of 0.6-0.8MPa.

[0035] A shell 4 is installed on one side of the sealing block 3, and a wear-resistant layer 5 is installed on the outer side of the shell 4. A reinforcing structure 10 is arranged inside the shell 4. The reinforcing structure 10 includes a first reinforcing rib 1001, a second reinforcing rib 1002 and a reinforcing layer 1003. The reinforcing layer 1003 is arranged inside the shell 4. The first reinforcing rib 1001 is arranged inside the reinforcing layer 1003. The second reinforcing rib 1002 is arranged inside the reinforcing layer 1003. The second reinforcing rib 1002 and the first reinforcing rib 1001 intersect with each other, and the second reinforcing rib 1002 is arranged at equal intervals inside the reinforcing layer 1003.

[0036] In the second specific embodiment, first, the reinforcing layer 1003 is provided with first reinforcing ribs 1001 and second reinforcing ribs 1002 arranged at equal intervals, the first reinforcing ribs 1001 and the second reinforcing ribs 1002 cross each other, the first reinforcing ribs 1001 and the second reinforcing ribs 1002 can be made of steel material, and the first reinforcing ribs 1001 and the second reinforcing ribs 1002 can strengthen the structural strength of the outer shell 4 to prevent the outer shell 4 from being damaged.

[0037] A connecting layer 9 is provided on the inner side of the outer shell 4, a sealing gasket 8 is provided on the inner side of the connecting layer 9, an outlet 6 is installed on one side of the outer shell 4, and a filtering structure 7 is installed inside the outlet 6, the filtering structure 7 includes a first connecting block 701, a second connecting block 702 and a filter screen 703, the first connecting block 701 is installed inside the outlet 6, a card slot is provided on one side of the first connecting block 701, a card block is provided on one side of the second connecting block 702, and the first connecting block 701 and the second connecting block 702 constitute a snap-fit ​​structure.

[0038] One side of the first connection block 701 is movably connected to the second connection block 702 , and a filter screen 703 is disposed inside the second connection block 702 .

[0039] Specific embodiment three, first, the first connecting block 701 and the second connecting block 702 form a snap-fit ​​structure, the snap-fit ​​structure is easy to disassemble, the filter 703 can be installed by snapping the second connecting block 702 into the first connecting block 701, the filter 703 can be replaced, and when the filter 703 is not needed, the filter 703 can be removed by disassembling the second connecting block 702. The filter 703 is provided with fine holes, and the filter 703 can filter the blown gas to prevent dust or impurities from being blown out and affecting the processing of steel materials.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A nitrogen control device for use in a wire rod continuous casting process, comprising a rubber pad (1), a sealing block (3) and a connecting layer (9), characterized in that: A sealing block (3) is installed on one side of the rubber pad (1); A sealing structure (2) is installed inside the sealing block (3), a shell (4) is installed on one side of the sealing block (3), a wear-resistant layer (5) is installed on the outer side of the shell (4), a reinforcement structure (10) is arranged inside the shell (4), and a connecting layer (9) is arranged on the inner side of the shell (4); A sealing gasket (8) is provided on the inner side of the connecting layer (9); an outlet (6) is installed on one side of the outer shell (4); and a filtering structure (7) is installed inside the outlet (6); the filtering structure (7) comprises a first connecting block (701), a second connecting block (702) and a filter screen (703); and the first connecting block (701) is installed inside the outlet (6).

2. The nitrogen control device for wire rod continuous casting according to claim 1, characterized in that: The sealing structure (2) comprises a first sealing ring (201), a second sealing ring (202), a first sealing groove (203) and a second sealing groove (204); the second sealing groove (204) is arranged inside the sealing block (3); the second sealing ring (202) is arranged inside the second sealing groove (204); and the first sealing groove (203) is arranged inside the sealing block (3).

3. The nitrogen control device for wire rod continuous casting according to claim 2, characterized in that: A first sealing ring (201) is arranged inside the first sealing groove (203), and the outer diameter of the first sealing ring (201) is smaller than the inner diameter of the first sealing groove (203).

4. The nitrogen control device for wire rod continuous casting according to claim 1, characterized in that: One side of the first connection block (701) is movably connected to the second connection block (702), and a filter screen (703) is arranged on the inner side of the second connection block (702).

5. The nitrogen control device for wire rod continuous casting according to claim 1, characterized in that: A clamping groove is provided on one side of the first connection block (701), and a clamping block is provided on one side of the second connection block (702); the first connection block (701) and the second connection block (702) form a clamping structure.

6. The nitrogen control device for wire rod continuous casting according to claim 1, characterized in that: The reinforcement structure (10) comprises a first reinforcement rib (1001), a second reinforcement rib (1002) and a reinforcement layer (1003); the reinforcement layer (1003) is arranged inside the outer shell (4); the first reinforcement rib (1001) is arranged inside the reinforcement layer (1003); and the second reinforcement rib (1002) is arranged inside the reinforcement layer (1003).

7. A nitrogen control device for use in a wire rod continuous casting process according to claim 6, characterized in that: The second reinforcing ribs (1002) and the first reinforcing ribs (1001) intersect each other, and the second reinforcing ribs (1002) are arranged at equal intervals inside the reinforcing layer (1003).

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