Moisture-proof and oxidation-resistant calcium-iron cored wire

Abstract

The utility model discloses a kind of moisture-proof antioxidation calcium iron cored wire, it is related to cored wire technical field.The utility model includes outer skin, L-shaped fixed strip, lower laminating strip, sealing strip and L-shaped isolation plate, the side of outer skin is equipped with joint, L-shaped fixed strip is fixed in joint inner top, the outer side of L-shaped fixed strip vertical face is fixed with sealing strip, cavity is opened along length direction through in sealing strip, L-shaped fixed strip is fixed with outer plate on the side away from sealing strip, the bottom of outer plate is provided with lower laminating strip, lower laminating strip is fixed on the outer circumferential surface of outer skin, L-shaped isolation plate is arranged in annular array in outer skin.The utility model is fixed by setting outer skin, L-shaped fixed strip, lower laminating strip, sealing strip and L-shaped isolation plate, solve the moisture absorption and oxidation of calcium iron cored wire poor tightness, and the problem of uneven dispersion of alloy in molten steel.

Description

Technical Field

[0001] This utility model belongs to the field of cored wire technology, and in particular relates to a moisture-proof and oxidation-resistant calcium-iron cored wire. Background Technology

[0002] Calcium-iron cored wire is a wire-shaped metallurgical material made of calcium-iron alloy core powder wrapped in thin steel strip. It is mainly used in the calcium treatment process during steel refining. Its core function is to inject it deep into the molten steel through a wire feeder, using calcium, a strong deoxidizer, to deeply purify the molten steel and change the morphology of inclusions. Specifically, calcium can convert high-melting-point solid alumina inclusions into low-melting-point liquid calcium aluminate, thereby effectively preventing nodule formation in continuous casting nozzles and improving the machinability and toughness of steel. Compared with pure calcium wire, calcium-iron cored wire has the advantages of more stable reaction, higher calcium yield, and lower cost due to the dilution effect of iron on calcium activity. However, calcium-iron cored wire still has the following drawbacks in practical use: The joints or structural gaps of calcium-iron cored wire may not be properly sealed, which allows moisture and oxygen in the air to easily penetrate into the cored wire and react with the internal calcium-iron alloy. This causes the alloy to deteriorate due to the reaction with water and air, thereby reducing its reaction efficiency and performance when it is put into molten steel, and even affecting the quality of the molten steel. Secondly, after calcium-iron cored wire is fed with molten steel, its outer sheath melts, and the internal alloy material is often released in a concentrated manner or diffuses within a limited range. This can easily lead to localized over-concentration in the reaction zone between the alloy and the molten steel, while other areas react insufficiently, affecting the absorption rate of alloying elements and the uniformity of the reaction. Ultimately, this has an adverse effect on the precise control of the molten steel composition and the metallurgical effect. Utility Model Content

[0003] The purpose of this utility model is to provide a moisture-proof and oxidation-resistant calcium-iron cored wire. By setting an outer sheath, an L-shaped fixing strip, a lower bonding strip, a sealing strip, and an L-shaped isolation plate, it solves the problems of poor sealing performance of calcium-iron cored wire, which leads to easy moisture and oxidation, and uneven dispersion of the alloy in molten steel.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a moisture-proof and oxidation-resistant calcium-iron cored wire, comprising an outer sheath, an L-shaped fixing strip, a lower bonding strip, a sealing strip, and an L-shaped isolation plate. A seam is formed on one side of the outer sheath. An L-shaped fixing strip is fixed to the top of the seam, and a sealing strip is fixed to the outer side of the vertical surface of the L-shaped fixing strip. A cavity is formed through the sealing strip along its length. An outer plate is fixed to the side of the L-shaped fixing strip away from the sealing strip. A lower bonding strip is provided at the bottom of the outer plate and is fixed to the outer circumferential surface of the outer sheath. L-shaped isolation plates are arranged in a circular array inside the outer sheath. The seam on the outer sheath is used for connection and sealing of the overall structure. The L-shaped fixing strip fixed to the top of the seam and the sealing strip together achieve an elastic seal, preventing air and moisture intrusion. The connection between the outer plate and the L-shaped fixing strip improves the stability of the seam. The lower bonding strip is fixed to the outer circumferential surface of the outer sheath and cooperates with the upper outer plate to form a closed structure. The L-shaped isolation plates arranged in a circular array inside the outer sheath are used to wrap the calcium-iron alloy, making it more evenly dispersed in molten steel.

[0005] Furthermore, a fitting strip is fixed to the bottom of the seam of the outer skin. The fitting strip is movably connected to the L-shaped partition plate. The fitting strip is fixed to the bottom of the seam and movably connected to the L-shaped partition plate, so that the outer skin and the L-shaped partition plate form a movable combination structure, which facilitates overall sealing.

[0006] Furthermore, the interlocking strip is movably connected inside the L-shaped fixing strip and fits against the side of the outer plate near the L-shaped fixing strip. The interlocking strip is movably connected inside the L-shaped fixing strip and fits against the inner side of the outer plate, achieving a preliminary seal at the joint and preventing outside air from entering.

[0007] Furthermore, an upper bonding strip is fixed to the top of the outer panel. The upper bonding strip is fixed to the outer skin surface above the joint. The upper bonding strip fixes the top of the outer panel to the outer skin surface, enhances the connection strength between the outer panel and the outer skin, and improves the overall stability of the joint.

[0008] Furthermore, a fitting groove is provided at the top center of the lower bonding strip along the length direction, and a bottom fixing strip is fixed at the bottom of the outer plate. The fitting groove is provided at the top of the lower bonding strip, and the bottom fixing strip is correspondingly provided at the bottom of the outer plate. The two cooperate with each other to form a movable connection structure, providing a basis for subsequent sealing.

[0009] Furthermore, the bottom fixing strip corresponds to the position of the fitting groove, and the bottom fixing strip is movably connected in the fitting groove, so that a labyrinth-like sealing structure is formed between the outer plate and the lower bonding strip, effectively preventing moisture from entering the interior of the outer skin.

[0010] Furthermore, the L-shaped isolation plate is filled with a filler material, and spherical alloy materials are embedded in the filler material at equal intervals. The L-shaped isolation plate is filled with loose calcium-iron alloy material and spherical alloy materials are embedded at equal intervals. After the outer skin melts, the filler material disperses rapidly, and the spherical alloy materials further diffuse into the molten steel, improving the uniformity of alloy distribution.

[0011] This utility model has the following beneficial effects: This invention solves the problem of poor sealing and susceptibility to moisture and oxidation in calcium-iron cored wires by incorporating an outer sheath, an L-shaped fixing strip, a lower bonding strip, and a sealing strip. The L-shaped fixing strip engages with the bottom bonding strip within the seam, while the bottom fixing strip of the outer plate enters the top bonding groove of the lower bonding strip. During assembly, the bonding strip, the L-shaped fixing strip, and the outer plate form a preliminary seal. The engagement, interlocking, and bonding of the components create a complex sealing path at the seam, effectively blocking the intrusion of external moisture and air. Furthermore, the hollow sealing strip utilizes its elasticity to further tighten the gap between the L-shaped isolation plate and the seam, enhancing the stability and reliability of the seal. This invention solves the problem of uneven dispersion of calcium-iron cored wire alloy in molten steel by setting an outer sheath and L-shaped isolation plates. The innovative design incorporates annular arrays of L-shaped isolation plates inside the outer sheath, dividing the calcium-iron alloy inside the cored wire into multiple independent chambers. When the cored wire is immersed in molten steel and the outer sheath melts, these L-shaped isolation plates disperse, guiding the filler material inside to be released into the molten steel from multiple positions and directions, thus improving initial dispersion. Spherical alloy materials are embedded at equal intervals within the filler material of the L-shaped isolation plates. The spherical shape provides better fluidity and a longer diffusion distance. Based on the dispersion of the isolation plates and the filler material, these spherical alloy materials can further diffuse into a more distant area of ​​the molten steel, achieving secondary enhanced dispersion in both depth and breadth. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A three-dimensional diagram of the assembly structure of a moisture-proof and oxidation-resistant calcium-iron cored wire; Figure 2 for Figure 1 Enlarged view of the structure at point A in the image; Figure 3 A three-dimensional diagram of the outer skin structure; Figure 4 for Figure 3 Enlarged view of the structure at point B in the image; Figure 5 A three-dimensional view of the L-shaped fixing strip; Figure 6 This is a three-dimensional structural view of the lower bonding strip; Figure 7 This is a three-dimensional structural diagram of the sealing strip; Figure 8 This is a three-dimensional structural diagram of an L-shaped isolation plate.

[0014] Figure label: 1. Outer skin; 101. Seam; 102. Fitting strip; 2. L-shaped fixing strip; 201. Outer panel; 202. Upper bonding strip; 203. Bottom fixing strip; 3. Lower bonding strip; 301. Fitting groove; 4. Sealing strip; 401. Cavity; 5. L-shaped isolation plate; 501. Filler material; 502. Spherical alloy material. Detailed Implementation

[0015] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0016] Please see Figure 1-7This utility model relates to a moisture-proof and oxidation-resistant calcium-iron cored wire, comprising an outer sheath 1, an L-shaped fixing strip 2, a lower bonding strip 3, a sealing strip 4, and an L-shaped isolation plate 5. A seam 101 is provided on one side of the outer sheath 1, enclosing the L-shaped isolation plate 5 within it. The seam 101 on the outer sheath 1 connects the enclosed structure. An L-shaped fixing strip 2 is fixed to the top of the seam 101, and the L-shaped fixing strip 2 engages with the fitting strip 102 within the seam 101. A sealing strip 4 is fixed to the outer side of the vertical surface of the L-shaped fixing strip 2, sealing the gap between the L-shaped isolation plate 5 and the seam 101 on the outer sheath 1. The sealing strip 4 has a continuous opening along its length. There is a cavity 401, which ensures the elasticity of the sealing strip 4 and increases the stability of the sealing of the joint 101 on the outer skin 1. An outer plate 201 is fixed on the side of the L-shaped fixing strip 2 away from the sealing strip 4. The outer plate 201 increases the stability of the combination of the L-shaped fixing strip 2 and the interlocking strip 102. A lower bonding strip 3 is provided at the bottom of the outer plate 201. The lower bonding strip 3 is fixed to the outer peripheral surface of the outer skin 1 and closes the outer strip. An L-shaped isolation plate 5 is arranged in a ring array inside the outer skin 1. The L-shaped isolation plate 5 is arranged inside the outer skin 1. After the combination, when the entire cored wire enters the molten steel, the outer skin 1 melts and disperses, increasing the dispersion of the calcium-iron alloy when the cored wire is fed.

[0017] Specifically, a fitting strip 102 is fixed at the bottom of the seam 101 of the outer skin 1. The fitting strip 102 is movably connected to the L-shaped isolation plate 5. When the outer skin 1 is working, it is movably connected to the L-shaped isolation plate 5 through the fitting strip 102 to cooperate with the sealing of the outer skin 1.

[0018] Furthermore, the interlocking strip 102 is movably connected inside the L-shaped fixing strip 2 and is in contact with the side of the outer plate 201 near the L-shaped fixing strip 2. After the interlocking strip 102 is movably connected inside the L-shaped fixing strip 2, it is in contact with the outer plate 201, thereby sealing the gap between the outer skin 1 and the L-shaped isolation plate 5.

[0019] Furthermore, an upper bonding strip 202 is fixed to the top of the outer panel 201. The upper bonding strip 202 is fixed to the surface of the outer skin 1 above the joint 101. The outer panel 201 is fixed to the outer skin 1 through the upper bonding strip 202, which increases the stability of the connection between the outer panel 201 and the outer skin 1.

[0020] Furthermore, a fitting groove 301 is provided in the middle of the top of the lower bonding strip 3 along the length direction, and a bottom fixing strip 203 is fixed to the bottom of the outer plate 201. The fitting groove 301 on the lower bonding strip 3 is movably connected with the bottom fixing strip 203.

[0021] Furthermore, the bottom fixing strip 203 corresponds to the fitting groove 301, and the bottom fixing strip 203 is movably connected in the fitting groove 301, so that during operation, the outer skin 1 can effectively seal the gap between the lower bonding strip 3 and the seam 101.

[0022] The operation process of this embodiment is as follows: During operation, after the seam 101 on the outer skin 1 is locked into the fitting strip 102 at the bottom of the seam 101 by the L-shaped fixing strip 2, the bottom fixing strip 203 at the bottom of the outer plate 201 enters the fitting groove 301 at the top of the lower bonding strip 3. During the assembly process, the fitting strip 102, the L-shaped fixing strip 2 and the outer plate 201 combine to form a preliminary seal. The bottom fixing strip 203 at the bottom of the outer plate 201 enters the fitting groove 301 at the top of the lower bonding strip 3, and the combination forms a labyrinth-type sealing structure to prevent moisture from entering the outer skin 1. At the same time, the L-shaped fixing strip 2 cooperates with the sealing strip 4 to further seal and prevent air from entering the outer skin 1 and causing the calcium-iron alloy to deteriorate. Specific Implementation Example 2

[0023] Please see Figure 1 , 2 3, 8. Based on the specific embodiment one, the L-shaped isolation plate 5 is provided with a filler 501, and spherical alloy materials 502 are embedded in the filler 501 at equal intervals. The L-shaped isolation plate 5 is loosely set by the filler 501 and quickly disperses after entering the molten steel. After the spherical alloy materials 502 enter the molten steel, they are further dispersed to a farther distance in the molten steel.

[0024] The operation process of this embodiment is as follows: During operation, when the wire feeder feeds the cored wire into the molten steel, after the outer sheath 1 melts, the L-shaped isolation plate 5 enters the molten steel and disperses and melts, so that the calcium-iron alloy contained in the filler 501 is dispersed into the molten steel and reacts with the molten steel. At the same time, the spherical alloy material 502 is further dispersed into the molten steel, so that the molten steel and the spherical alloy material 502 react further, making the calcium-iron alloy and the molten steel more evenly dispersed.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A moisture-proof and oxidation-resistant calcium-iron cored wire, comprising an outer sheath (1), an L-shaped fixing strip (2), a lower bonding strip (3), a sealing strip (4), and an L-shaped isolation plate (5), characterized in that: A seam (101) is provided on one side of the outer skin (1). An L-shaped fixing strip (2) is fixed at the top of the seam (101). A sealing strip (4) is fixed on the outer side of the vertical surface of the L-shaped fixing strip (2). A cavity (401) is provided through the sealing strip (4) along the length direction. An outer plate (201) is fixed on the side of the L-shaped fixing strip (2) away from the sealing strip (4). A lower bonding strip (3) is provided at the bottom of the outer plate (201). The lower bonding strip (3) is fixed on the outer peripheral surface of the outer skin (1). An L-shaped isolation plate (5) is arranged in a ring array inside the outer skin (1).

2. The moisture-proof and oxidation-resistant calcium-iron cored wire according to claim 1, characterized in that: A fitting strip (102) is fixed at the bottom of the seam (101) of the outer skin (1), and the fitting strip (102) is movably connected to the L-shaped isolation plate (5).

3. The moisture-proof and oxidation-resistant calcium-iron cored wire according to claim 2, characterized in that: The interlocking strip (102) is movably connected inside the L-shaped fixing strip (2) and is in contact with the side of the outer plate (201) near the L-shaped fixing strip (2).

4. The moisture-proof and oxidation-resistant calcium-iron cored wire according to claim 3, characterized in that: The top of the outer panel (201) is fixed with an upper bonding strip (202), which is fixed on the surface of the outer skin (1) above the seam (101).

5. The moisture-proof and oxidation-resistant calcium-iron cored wire according to claim 1, characterized in that: The top center of the lower bonding strip (3) is provided with a fitting groove (301) along the length direction, and the bottom of the outer plate (201) is fixed with a bottom fixing strip (203).

6. The moisture-proof and oxidation-resistant calcium-iron cored wire according to claim 5, characterized in that: The bottom fixing strip (203) corresponds to the position of the fitting groove (301), and the bottom fixing strip (203) is movably connected in the fitting groove (301).

7. The moisture-proof and oxidation-resistant calcium-iron cored wire according to claim 1, characterized in that: The L-shaped isolation plate (5) is provided with a filler (501), and spherical alloy materials (502) are embedded in the filler (501) at equal intervals.

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