Scale removing device for zinc-aluminum-magnesium furnace nose

Abstract

The utility model belongs to the technical field of metallurgical equipment, and particularly relates to a zinc-aluminum-magnesium furnace nose oxide scale removing device which comprises a zinc pot and zinc liquid, the zinc liquid is filled in an inner cavity of the zinc pot, a sink roll is rotatably arranged in the inner cavity of the zinc pot, a steel belt is wound on the surface of the sink roll, a furnace nose is inserted in the inner cavity of the zinc pot, and the steel belt is arranged on the surface of the sink roll. The bottom of the furnace nose is submerged in the zinc liquid, a 120-degree inclination angle is formed between the furnace nose and the horizontal plane, and one end of the steel belt is inserted into an inner cavity of the furnace nose; attached oxide scales are swept away through nitrogen, the upper nitrogen purging pipe and the lower nitrogen purging pipe are each of an S-shaped structure, the number of exhaust holes can be increased, the nitrogen is evenly released into an inner cavity of the furnace nose, meanwhile, the upper nitrogen purging pipe and the lower nitrogen purging pipe are located on the surfaces of the two sides of the furnace nose respectively, and the nitrogen purging efficiency is improved. The cleaning effect on the inner cavity of the furnace nose can be improved, the defect that scale adheres to the sink roller and hurt the sink roller is overcome, and the quality and the one-time yield of steel belt products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a device for removing iron oxide scale from a zinc-aluminum-magnesium furnace nose. Background Art

[0002] In recent years, due to the urgent need for energy conservation and environmental protection and the continuous improvement of safety in the automotive industry, automobile weight reduction and collision safety have become the most urgent needs of the automotive manufacturing industry. Ultra-high-strength steel can not only significantly reduce the weight of the vehicle body due to its excellent strength performance, but also meet the collision safety performance. However, the manufacture of high-strength parts adopts the traditional cold stamping method, which is difficult to control the rebound, has low dimensional stability of parts, and has always been accompanied by the problem of stamping cracking. In this case, hot stamping forming technology was born. After patent search, it was found that the publication number: CN218989359U discloses a slag pump for removing the surface slag in the furnace nose of hot-dip aluminum-silicon strip steel. It overcomes the defect of difficult removal of aluminum-silicon surface slag in the traditional furnace nose, and realizes the discharge of aluminum-silicon surface slag inside the furnace nose to the outside of the furnace nose, so that the aluminum-silicon liquid inside the furnace nose is replaced, avoiding the surface defects of the strip caused by the surface slag, thereby improving the quality of aluminum-silicon coated steel plates.

[0003] When the existing unit is started up, in the early stage of zinc-aluminum-magnesium product production, due to the unstable atmosphere in the annealing furnace, the steel strip will be oxidized to produce iron oxide scale, which will fall on the internal structure of the furnace nose. During the production process, due to equipment vibration and other reasons, it will fall on the steel strip again and adhere to the surface of the zinc-aluminum-magnesium finished product, causing defects. This defect is uncontrollable and irregular, affecting product quality and the first-time yield. In order to solve the above problems, this application proposes a zinc-aluminum-magnesium furnace nose iron oxide scale removal device. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In order to solve the technical problems existing in the background technology, the utility model proposes a device for removing iron oxide scale from the zinc-aluminum-magnesium furnace nose, which uses nitrogen to blow away the attached iron oxide scale. The upper nitrogen purge pipe and the lower nitrogen purge pipe are both S-shaped structures, which can increase the number of exhaust holes and release nitrogen evenly into the inner cavity of the furnace nose. At the same time, the upper nitrogen purge pipe and the lower nitrogen purge pipe are respectively located on the two side surfaces of the furnace nose, which will enhance the cleaning effect of the inner cavity of the furnace nose, reduce the iron oxide scale sticking to the sinking roller, and produce scratch defects, thereby improving the quality of steel strip products and the one-time yield rate, so as to solve the problems raised in the background technology.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a device for removing iron oxide scale from the nose of a zinc-aluminum-magnesium furnace, comprising a zinc pot and zinc liquid, wherein the zinc liquid is filled in the inner cavity of the zinc pot, a sinking roller is provided in the inner cavity of the zinc pot for rotation, and a steel belt is wound around the surface of the sinking roller;

[0008] The inner cavity of the zinc pot is plugged with a furnace nose, the bottom of the furnace nose is submerged in the zinc liquid, the furnace nose is inclined at 120 degrees to the horizontal plane, and one end of the steel strip is plugged into the inner cavity of the furnace nose;

[0009] An upper nitrogen purge pipe is provided on the upper surface of the furnace nose, and a lower nitrogen purge pipe is provided on the lower surface of the furnace nose.

[0010] Preferably, the upper nitrogen purge pipe and the lower nitrogen purge pipe are both S-shaped structures, the inner wall of the zinc pot is symmetrically provided with a rotating seat, and both ends of the sinking roller are rotatably connected to the rotating seat.

[0011] Preferably, exhaust holes are provided at the connection points between the upper nitrogen purge pipe and the lower nitrogen purge pipe and the surface of the furnace nose, and the exhaust holes are conductively connected to the furnace nose.

[0012] Preferably, a visual inspection hole is conductively connected to the lower surface of the furnace nose, and a fill light is embedded on the surface of the visual inspection hole.

[0013] Preferably, the inner cavity of the zinc pot is provided with a zinc liquid guide pipe, and the zinc liquid guide pipe is a right-angle structure.

[0014] Preferably, a conical flow guide cover is connected to the top of the vertical side of the zinc liquid guide pipe, and the top surface of the conical flow guide cover is lower than the liquid level of the zinc liquid.

[0015] Preferably, a through hole is formed through the surface of the side wall of the zinc pot, a transverse tube of the zinc liquid guide pipe is inserted into the through hole, and a zinc liquid circulation pump is installed on the zinc liquid guide pipe.

[0016] The above technical solution of the utility model has the following beneficial technical effects:

[0017] The utility model introduces nitrogen into the interior of the furnace nose through an upper nitrogen purge pipe and a lower nitrogen purge pipe, and the attached iron oxide scale is purged away by the nitrogen. The upper nitrogen purge pipe and the lower nitrogen purge pipe are both S-shaped structures, which can increase the number of exhaust holes and release nitrogen evenly into the inner cavity of the furnace nose. At the same time, the upper nitrogen purge pipe and the lower nitrogen purge pipe are respectively located on the two side surfaces of the furnace nose, which will enhance the cleaning effect of the inner cavity of the furnace nose, reduce the iron oxide scale sticking to the sinking roller, produce scratch defects, and improve the product quality of the steel strip and the first-time yield rate.

[0018] The utility model starts the zinc liquid circulation pump, and can absorb the oxidized iron scale floating on the surface of the zinc liquid through the conical guide cover, and can replace the oxidized iron scale from the zinc pot through the zinc liquid guide pipe, so as to ensure the cleanliness of the furnace nose cavity and the zinc liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a zinc-aluminum-magnesium furnace nose deoxidation scale device according to the utility model;

[0020] Figure 2 This is a schematic cross-sectional structure diagram of a zinc-aluminum-magnesium furnace nose deoxidation scale device according to the utility model;

[0021] Figure 3 This is a schematic diagram of the furnace nose structure of a zinc-aluminum-magnesium furnace nose deoxidation scale removal device of the utility model;

[0022] Figure 4 The utility model is a schematic diagram of the zinc pot structure of a zinc-aluminum-magnesium furnace nose deoxidation scale removal device.

[0023] Reference numerals:

[0024] 1. Zinc pot; 2. Sinking roller; 3. Steel belt; 4. Furnace nose; 5. Upper nitrogen purge pipe; 6. Lower nitrogen purge pipe; 7. Visual inspection hole; 8. Fill light; 9. Zinc liquid flow guide pipe; 10. Conical flow guide cover; 11. Zinc liquid circulation pump; 12. Through hole; 13. Rotating seat; 14. Zinc liquid. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0026] like Figure 1-4 As shown, the utility model proposes a device for removing iron oxide scale from the nose of a zinc-aluminum-magnesium furnace, comprising a zinc pot 1 and zinc liquid 14, wherein the zinc liquid 14 is filled in the inner cavity of the zinc pot 1, and a sinking roller 2 is provided in the inner cavity of the zinc pot 1 for rotation, and a steel belt 3 is wound around the surface of the sinking roller 2;

[0027] A furnace nose 4 is inserted into the inner cavity of the zinc pot 1, the bottom of the furnace nose 4 is submerged in the zinc liquid 14, the furnace nose 4 is inclined at 120 degrees to the horizontal plane, and one end of the steel strip 3 is inserted into the inner cavity of the furnace nose 4;

[0028] An upper nitrogen purge pipe 5 is provided on the upper surface of the furnace nose 4, and a lower nitrogen purge pipe 6 is provided on the lower surface of the furnace nose 4. The upper nitrogen purge pipe 5 and the lower nitrogen purge pipe 6 are both S-shaped structures. A rotating seat 13 is symmetrically provided on the inner wall of the zinc pot 1, and both ends of the sinking roller 2 are rotatably connected to the rotating seat 13. Exhaust holes are provided at the connection between the upper nitrogen purge pipe 5 and the lower nitrogen purge pipe 6 and the surface of the furnace nose 4, and the exhaust holes are conductively connected to the furnace nose 4.

[0029] It should be noted that if a large amount of iron oxide is found to be deposited on the inner wall of the furnace nose 4, nitrogen is introduced into the furnace nose 4 through the upper nitrogen purge pipe 5 and the lower nitrogen purge pipe 6, and the attached iron oxide is blown away by the nitrogen and falls on the surface of the zinc liquid 14 at the bottom of the inner cavity of the furnace nose 4. Then the zinc liquid circulation pump 11 is turned on, and the iron oxide floating on the surface of the zinc liquid 14 can be sucked away by the conical guide cover 10, and the iron oxide can be replaced from the zinc pot 1 through the zinc liquid guide pipe 9 to ensure the cleanliness of the inner cavity of the furnace nose 4 and the zinc liquid 14. During operation, the upper nitrogen purge pipe 5 and the lower nitrogen purge pipe 6 are both S-shaped structures, which can increase the number of exhaust holes and release nitrogen evenly into the inner cavity of the furnace nose 4. At the same time, the upper nitrogen purge pipe 5 and the lower nitrogen purge pipe 6 are respectively located on the two side surfaces of the furnace nose 4, which will enhance the cleaning effect of the inner cavity of the furnace nose 4.

[0030] In this embodiment, if Figure 2 and Figure 3 As shown, a visual inspection hole 7 is conductively connected to the lower surface of the furnace nose 4, and a fill light 8 is embedded on the surface of the visual inspection hole 7.

[0031] It should be noted that the deposition of iron oxide scale inside the furnace nose 4 can be observed through the visual inspection hole 7, and the fill light 8 can fill light to the inner cavity of the furnace nose 4, making the observation of the inner cavity of the furnace nose 4 clearer.

[0032] In this embodiment, if Figure 3 and Figure 4 As shown, the inner cavity of the zinc pot 1 is provided with a zinc liquid guide pipe 9, and the zinc liquid guide pipe 9 is a right-angle structure. The top of the vertical side of the zinc liquid guide pipe 9 is connected with a conical guide cover 10, and the top surface of the conical guide cover 10 is lower than the liquid level of the zinc liquid 14. A through hole 12 is opened through the side wall surface of the zinc pot 1, and the horizontal pipe of the zinc liquid guide pipe 9 is inserted in the through hole 12. A zinc liquid circulation pump 11 is installed on the zinc liquid guide pipe 9.

[0033] It should be noted that when the zinc liquid circulation pump 11 is turned on, the iron oxide scale floating on the surface of the zinc liquid 14 can be sucked away through the conical guide cover 10, and the iron oxide scale can be replaced from the zinc pot 1 through the zinc liquid guide pipe 9 to ensure the cleanliness of the inner cavity of the furnace nose 4 and the zinc liquid 14.

[0034] The working principle and use process of the utility model are as follows: during the production process, the steel strip 3 is wound around the sinking roller 2 and passes through the furnace nose 4. The inner cavity of the zinc pot 1 is filled with zinc liquid 14. The steel strip 3 is guided by the sinking roller 2 to allow the steel strip 3 to pass through the zinc liquid 14. The deposition of iron oxide scale inside the furnace nose 4 can be observed through the visual inspection hole 7. The fill light 8 can fill light to the inner cavity of the furnace nose 4 to make the observation of the inner cavity of the furnace nose 4 clearer. If a large amount of iron oxide scale is found to be deposited on the inner wall of the furnace nose 4, nitrogen is introduced into the furnace nose 4 through the upper nitrogen purge pipe 5 and the lower nitrogen purge pipe 6. The nitrogen The attached iron oxide scale is blown off and dropped onto the surface of the zinc liquid 14 at the bottom of the inner cavity of the furnace nose 4, and then the zinc liquid circulation pump 11 is turned on. The iron oxide scale floating on the surface of the zinc liquid 14 can be sucked away through the conical guide cover 10, and the iron oxide scale can be replaced from the zinc pot 1 through the zinc liquid guide pipe 9 to ensure the cleanliness of the inner cavity of the furnace nose 4 and the zinc liquid 14. During the operation, the liquid level of the zinc liquid 14 in the zinc pot 1 should be kept relatively high. Secondly, the speed of the sinking roller 2 and the steel strip 3 is reduced to reduce the iron oxide scale sticking to the sinking roller 2, resulting in scratches and defects, thereby improving the product quality of the steel strip 3 and the first-time yield rate.

[0035] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims or the equivalent forms of such scope and boundaries.

Claims

1. A device for removing iron oxide scale from a zinc-aluminum-magnesium furnace nose, comprising a zinc pot (1) and zinc liquid (14), wherein the zinc liquid (14) is filled in the inner cavity of the zinc pot (1), and characterized in that: A sinking roller (2) is rotatably arranged in the inner cavity of the zinc pot (1), and a steel belt (3) is wound around the surface of the sinking roller (2); The inner cavity of the zinc pot (1) is plugged with a furnace nose (4), the bottom of the furnace nose (4) is submerged in the zinc liquid (14), the furnace nose (4) is inclined at an angle of 120 degrees to the horizontal plane, and one end of the steel strip (3) is plugged into the inner cavity of the furnace nose (4); An upper nitrogen purge pipe (5) is provided on the upper surface of the furnace nose (4), and a lower nitrogen purge pipe (6) is provided on the lower surface of the furnace nose (4).

2. The device for removing iron oxide scale from the nose of a zinc-aluminum-magnesium furnace according to claim 1 is characterized in that: The upper nitrogen purge pipe (5) and the lower nitrogen purge pipe (6) are both S-shaped structures; a rotating seat (13) is symmetrically provided on the inner wall of the zinc pot (1); and both ends of the sinking roller (2) are rotatably connected to the rotating seat (13).

3. A zinc-aluminum-magnesium furnace nose deoxidation scale device according to claim 2, characterized in that: Exhaust holes are provided at the connection points between the upper nitrogen purge pipe (5) and the lower nitrogen purge pipe (6) and the surface of the furnace nose (4), and the exhaust holes are conductively connected to the furnace nose (4).

4. A zinc-aluminum-magnesium furnace nose deoxidation scale device according to claim 3, characterized in that: The lower surface of the furnace nose (4) is conductively connected to a visual inspection hole (7), and a fill light (8) is embedded on the surface of the visual inspection hole (7).

5. The device for removing iron oxide scale from the nose of a zinc-aluminum-magnesium furnace according to claim 1 is characterized in that: The inner cavity of the zinc pot (1) is provided with a zinc liquid guide pipe (9), and the zinc liquid guide pipe (9) is in a right-angle structure.

6. The device for removing iron oxide scale from the nose of a zinc-aluminum-magnesium furnace according to claim 5, characterized in that: A conical flow guide cover (10) is connected to the top of the vertical side of the zinc liquid guide pipe (9), and the top surface of the conical flow guide cover (10) is lower than the liquid level of the zinc liquid (14).

7. The device for removing iron oxide scale from the nose of a zinc-aluminum-magnesium furnace according to claim 6 is characterized in that: A through hole (12) is formed through the side wall surface of the zinc pot (1), a transverse pipe of the zinc liquid guide pipe (9) is inserted into the through hole (12), and a zinc liquid circulation pump (11) is installed on the zinc liquid guide pipe (9).

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