Eight-dimension continuous casting spray centering adjustment method

Abstract

This invention discloses an eight-dimensional continuous casting spray alignment adjustment method, belonging to the field of metallurgical technology. The method involves movably mounting spray pipes on a water ring support via adjusting blocks. Alignment is achieved by adjusting the angle of the spray pipes on the water ring support using these adjusting blocks. Several spray pipes are evenly distributed on the outer circumference of the water ring support. Adjusting blocks are fixedly installed at the upper and lower parts of the spray pipes corresponding to their positions on the water ring support. First oblong holes are provided on both sides of each adjusting block. The water ring support includes an annular steel pipe. Multiple water outlet pipes connected to the annular steel pipe are vertically mounted on one side of the annular steel pipe. Multiple U-shaped plates are evenly distributed on the outer circumference of the annular steel pipe. Second oblong holes are provided on the U-shaped plates. Spray pipes are installed inside the U-shaped plates via adjusting blocks. Water inlet pipes and fixing plates are also provided on the outer circumference of the annular steel pipe. This method allows for multi-dimensional adjustment, is convenient and quick, reduces maintenance time, and effectively ensures the correct distance between the spray nozzle and the billet, verticality requirements, and alignment accuracy.

Description

Technical Field

[0001] This invention relates to an eight-dimensional continuous casting spray alignment adjustment method, specifically a method for adjusting and positioning the spray pipes and nozzles in the secondary cooling zone of a continuous casting machine in eight directions, belonging to the field of metallurgical technology. Background Technology

[0002] The quality of continuously cast billets is a key aspect of quality management in steel enterprises. High quality, high efficiency, low consumption, and safe operation are the production requirements for continuous casting machines. In the increasingly competitive steel industry, special steel production processes require ensuring both the internal and surface quality of the cast billets.

[0003] High-quality steel grades require high uniformity in secondary cooling during continuous casting. Currently, the commonly used method is to use an integral spray pipe support and a fixed water ring. This method demands extremely high precision in the manufacturing and installation of the support and water ring, and they must not deform due to stress or thermal expansion and contraction during use. While theoretically feasible, it is difficult to guarantee in actual manufacturing and use. Moreover, during use, it has been found that adjusting for centering errors is difficult, time-consuming, labor-intensive, and results in high worker workload. This leads to excessive maintenance time, affecting casting machine operating rate and production efficiency. Centering errors can cause uneven cooling of the billet, resulting in problems such as central shrinkage cavities, accelerated squareness, and cracks in the cast billet.

[0004] Therefore, developing a continuous casting spray alignment adjustment method that can overcome the above defects and effectively solve the alignment problem of secondary cooling spray has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an eight-dimensional continuous casting spray centering adjustment method. This method can be adjusted in multiple dimensions, is convenient and quick, reduces maintenance time, and effectively ensures the spray nozzle distance from the billet, verticality requirements, and centering accuracy.

[0006] To solve the above technical problems, the present invention provides a method in which a spray pipe is movably mounted on a water ring support by means of an adjusting block, and the angle of the spray pipe on the water ring support is adjusted by the adjusting block to achieve centering; Several spray pipes are evenly distributed on the outer circumference of the water ring support. Adjustment blocks are fixedly installed on the upper and lower parts of the spray pipes corresponding to the positions of the water ring support. First waist-shaped holes are provided on both sides of the adjustment blocks. The water ring support includes an annular steel pipe. On one side of the annular steel pipe, there are multiple outlet pipes connected to the annular steel pipe. Multiple U-shaped plates are evenly distributed on the outer circumference of the annular steel pipe. The U-shaped plates are provided with second waist-shaped holes. Spray pipes are installed inside the U-shaped plates through adjusting blocks. The outer circumference of the annular steel pipe is also provided with an inlet pipe and a fixing plate.

[0007] The technical solution further defined in this invention is: Furthermore, in the aforementioned eight-dimensional continuous casting spray centering adjustment method, a U-shaped groove is opened in the middle of the adjusting block for placing the spray pipe. The adjusting block is provided with a first waist-shaped hole on both sides of the U-shaped groove. The first waist-shaped hole and the second waist-shaped hole are set perpendicularly and connected by bolts.

[0008] Technical advantages: The spray pipe of this invention is not fixedly mounted on the water ring support, but is fixed to the water ring support by an adjustable adjustment block. The spray pipe is adjusted by the cooperation of the adjustment block and the waist-shaped hole, thereby adjusting the alignment of the nozzles. The structure is simple, has multiple adjustment dimensions, and has good performance.

[0009] In the aforementioned eight-dimensional continuous casting spray centering adjustment method, one end of the spray pipe is the upper opening of the spray pipe, and the other end is the lower opening of the spray pipe. Several nozzles are evenly distributed along the length of the spray pipe, and the nozzles are directed towards the cast billet set in the water ring support.

[0010] In the aforementioned eight-dimensional continuous casting spray centering adjustment method, the nozzle is connected to the spray pipe through a nozzle connecting block.

[0011] In the aforementioned eight-dimensional continuous casting spray centering adjustment method, a nozzle connecting block is connected to the nozzle via a steel pipe near the upper opening of the spray pipe.

[0012] Technically, based on the process quality requirements for uniform distribution of secondary cooling water in the billet, the gap between the two cooling sections cannot be too large, so steel pipes are used to reduce the gap. The purpose is to ensure uniform cooling of the billet. The nozzles are arranged reasonably according to the process quality requirements.

[0013] In the aforementioned eight-dimensional continuous casting spray centering adjustment method, a steel plate is installed at the upper end of the spray pipe, a threaded joint plate is installed at the lower end of the spray pipe, and a drain bolt is installed on the threaded joint plate.

[0014] Technical benefits: This invention features a steel plate at the top of the spray pipe for sealing. Both the top and bottom of the spray pipe must be sealed during operation to ensure water pressure inside the pipe. The threaded joint plate at the bottom facilitates the installation of drain bolts. Removal of the plate allows for drainage of the internal cooling water and gas square pipe, thus facilitating the drainage of the spray pipe.

[0015] In the aforementioned eight-dimensional continuous casting spray alignment adjustment method, the spray pipe is a square tube, which is divided into a left channel and a right channel. Compressed air is introduced into the left channel of the square tube, and secondary cooling water is introduced into the right channel of the square tube.

[0016] In the aforementioned eight-dimensional continuous casting spray centering adjustment method, the annular steel pipe is divided into upper and lower parts. The upper part of the annular steel pipe is supplied with cold water, and the lower part of the annular steel pipe is supplied with compressed air.

[0017] In the aforementioned eight-dimensional continuous casting spray centering adjustment method, two fixed plates are symmetrically arranged, and the fixed plates are set on the outer circumference of the water ring support through connecting plates.

[0018] Technical advantages: The present invention features a fixing plate for easy fixation to the casting machine, and a connecting plate for connection to the water ring bracket, making installation and disassembly convenient.

[0019] In the aforementioned eight-dimensional continuous casting spray centering adjustment method, the U-shaped plate includes a U-shaped plate body and a base. The U-shaped plate body has two second waist-shaped holes. The base is an arc-shaped structure that matches the outer circumference of the annular steel pipe. One end of the base is connected to the annular steel pipe, and the other end is connected to the U-shaped plate body.

[0020] Technical effect: On the one hand, the U-shaped plate of the present invention is connected to the annular steel pipe through the base. The base can increase the contact area and enhance the connection stability of the U-shaped plate body on the annular steel pipe.

[0021] The beneficial effects of this invention are: This invention is applicable to multi-section casting machines or single-section casting machines. A U-shaped plate is mounted on the water ring bracket of the spray pipe, with oblong holes on both sides of the U-shaped plate. The size of these oblong holes is determined by the required adjustment range; in this invention, the theoretical position is adjustable within ±25mm. Simultaneously, a spray pipe positioning adjustment block is welded and fixed to the spray pipe. This adjustment block also has oblong holes at its fixed position, with the size of these holes determined by the required adjustment range; in this invention, the theoretical position is adjustable within ±25mm. The spray pipe water ring bracket and the spray pipe positioning adjustment block are connected and fixed with bolts. Based on actual measurement data, the vertical distance between the spray pipe nozzle and the billet surface, center alignment (in four directions), and vertical and horizontal swing (in four directions) in eight dimensions can all be adjusted and positioned through two oblong holes on each of the spray pipe water ring bracket and the spray pipe fixing block. After positioning and re-measuring to meet the accuracy requirements, the connecting bolts are tightened for positioning, effectively ensuring the dimensional accuracy of the vertical distance between the nozzle and the billet end face.

[0022] This invention provides a method for adjusting and positioning the spray pipes and nozzles in the secondary cooling zone of a continuous casting machine in eight directions. It effectively solves the problems of nozzle alignment and distance accuracy in continuous casting machines, ensuring uniform cooling of the billet and preventing issues such as central shrinkage cavities, increased squareness, and cracks in the billet caused by uneven cooling. This provides equipment assurance for the stability of the billet's quality in continuous casting. It allows for high-precision, efficient, and convenient control of the distance and alignment accuracy between the nozzle and the billet's end face, ensuring the internal and surface quality of the billet in multi-section or single-section production. Simultaneously, it reduces maintenance time for changing sections, improving the production efficiency and operating rate of the casting machine. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the assembly structure of the spray pipe and water ring support in the eight-dimensional continuous casting spray centering adjustment method of the present invention. Figure 2 for Figure 1 Schematic diagram of the structure of the water ring support; Figure 3 for Figure 1 Schematic diagram of the central water spray pipe; Figure 4 for Figure 3 Cross-sectional view; Figure 5 for Figure 1 Schematic diagram of the structure of the middle adjustment block; Figure 6 for Figure 1 A schematic diagram of the structure of the eight-dimensional continuous casting spray centering adjustment method in operation according to an embodiment of the present invention; In the diagram: 1-Spray pipe, 2-Water ring bracket, 201-U-shaped plate, 2011-Second oblong hole, 2012-U-shaped plate body, 2013-Base, 203-Annular steel pipe, 204-Outlet pipe connector, 206-Inlet pipe connector, 207-Connecting plate, 208-Fixing plate, 3-Adjusting block, 301-First oblong hole, 302-U-shaped groove, 4-Nozzle, 5-Nozzle connecting block, 6-Steel plate, 7-Threaded joint plate, 8-Drainage bolt, 9-Steel pipe. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solutions of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. All other embodiments obtained by those skilled in the art based on the given embodiments without innovative effort are within the scope of protection of this application. Example 1

[0025] This embodiment provides an eight-dimensional continuous casting spray alignment adjustment method, see reference. Figure 1 As shown, the spray pipe 1 is movably mounted on the water ring support 2 via the adjusting block 3, and the angle of the spray pipe 1 on the water ring support 2 is adjusted by the adjusting block 3 to achieve centering.

[0026] For details, please refer to Figure 2As shown, a casting billet is set in the middle of the water ring support 2. On its central axis, the water ring support 2 includes an annular steel pipe 203. On one side of the annular steel pipe 203, multiple water outlet pipes 204 connected to the annular steel pipe 203 are vertically arranged. Multiple U-shaped plates 201 are evenly distributed on the outer circumference of the annular steel pipe 203. The U-shaped plates 201 are provided with second waist-shaped holes 2011. Spray pipes 1 are set in the U-shaped plates 201 through adjusting blocks 3. The spray pipes are evenly distributed in at least four directions of the casting billet. The outer circumference of the annular steel pipe 203 is also provided with a water inlet pipe 206 and a fixing plate 208. Two fixing plates 208 are symmetrically arranged. The fixing plates 208 are set on the outer circumference of the annular steel pipe through connecting plates 207 and connected to the water ring support through the connecting plates, so that the installation and disassembly are convenient. The two fixing plates are symmetrically arranged on both sides of one of the U-shaped plates.

[0027] For further details, please refer to [link / reference]. Figure 2 As shown, the annular steel pipe 203 is divided into upper and lower parts. The upper part of the annular steel pipe 203 is supplied with cold water through a connecting pipe to the spray pipe, and the lower part of the annular steel pipe 203 is supplied with compressed air through a connecting pipe to the spray pipe.

[0028] For further details, please refer to [link / reference]. Figure 2 As shown, the U-shaped plate 201 includes a U-shaped plate body 2012 and a base 2013. The U-shaped plate body 2012 is used for the installation of the spray pipe. Two second waist-shaped holes 2011 are opened on the U-shaped plate body. The base 2013 has an arc-shaped structure that is adapted to the outer circumference of the annular steel pipe 203. One end of the base 2013 is connected to the annular steel pipe 203, and the other end is connected to the U-shaped plate body 2012. The base can increase the contact area and enhance the connection stability of the U-shaped plate body on the annular steel pipe.

[0029] For details, please refer to Figure 1 As shown, adjusting blocks 3 are fixedly installed on the upper and lower parts of the spray pipe 1, corresponding to the positions of the water ring bracket 2.

[0030] For further details, please refer to [link / reference]. Figure 4-5 As shown, the adjusting block 3 has a U-shaped groove 302 in the middle for placing the spray pipe 1. The adjusting block 3 has a first waist-shaped hole 301 on both sides of the U-shaped groove 302. The first waist-shaped hole 301 and the second waist-shaped hole 2011 are arranged perpendicularly to form a cross-shaped structure. The first waist-shaped hole 301 and the second waist-shaped hole 2011 are connected by bolts. In this invention, the spray pipe is not fixed on the water ring support, but is fixed on the water ring support by an adjustable adjusting block. The spray pipe is adjusted by the cooperation of the adjusting block and the waist-shaped hole, thereby adjusting the alignment of the nozzle. The structure is simple, the adjustment dimensions are multiple, and the use effect is good.

[0031] For further details, please refer to [link / reference]. Figure 3As shown, the spray pipe 1 is a square tube, divided into a left channel and a right channel. Compressed air flows through the left channel, and secondary cooling water flows through the right channel. One end of the spray pipe 1 is the upper opening, which is fitted with a steel plate 6. The other end is the lower opening, which is fitted with a threaded connector plate 7. A drain bolt 8 is mounted on the threaded connector plate 7. Several nozzles 4 are evenly distributed along the length of the spray pipe 1. The nozzles 4 are connected to the spray pipe 1 via nozzle connecting blocks 5. According to the process quality requirements for even distribution of secondary cooling water in the billet casting, the two cooling... At the junction of the sections, the gap cannot be too large, so a nozzle connecting block 5 is connected to the upper opening of the spray pipe 1 via a steel pipe 9 to connect the nozzle 4. The steel pipe is used to reduce the gap, which is to ensure the uniformity of the casting cooling. The nozzles are reasonably arranged according to the process quality requirements. The nozzle 4 faces the casting inside the water ring support 2. The steel plate on the spray pipe is used to seal the spray pipe. The threaded joint plate at the lower opening is convenient for setting the drain bolt. Removing the bolt allows for the drainage of the secondary cooling water and gas square pipe, which facilitates the drainage of the spray pipe.

[0032] In specific implementation, such as Figure 6 As shown, the middle of the multiple spray pipes is the cross-section of the cast billet. The nozzles in all four directions spray inwards onto the surface of the cast billet. The nozzle position on each side must be perpendicular to the cast billet surface, and the nozzle must correspond to the center line of the cast billet surface. During adjustment, based on the positioning deviation detected by laser detection or a right-angle ruler, the spray pipes are moved horizontally back and forth along the length of the second oblong hole on the U-shaped plate. The vertical distance between the spray pipe nozzles and the cast billet surface, as well as the distances in the four directions of center alignment, are adjustable. Since the first and second oblong holes have certain dimensions, and the first and second oblong holes form a cross-shaped structure, the spray pipes can move left and right within the oblong holes. The spray pipe adjusting block is designed to be welded 10mm below the original size. During initial installation, a 10mm shim is added first. Subsequent maintenance can be performed by selecting an adjusting shim of appropriate thickness based on the nozzle alignment accuracy measurement and deformation tolerance data. The shim is placed between the U-shaped plate and the spray pipe adjusting block. Combinations of shims of different thicknesses can be used to achieve the required adjustment in the vertical direction. If, after adjusting the spray pipe vertically, horizontally, and forward / backward, the center line of the nozzle and short pipe is not perpendicular to the center line of the cast billet, the four fixing bolts in the waist-shaped hole of the spray pipe can be loosened. Figure 6 The arrows indicate left and right sway adjustments to ensure the nozzle and short pipe centerline are perpendicular and aligned with the billet centerline. After all positioning adjustments are made, tighten the bolts to complete the centering adjustment. Initial installation accuracy is guaranteed. During use, the nozzle may be scraped by the billet finishing process, causing the spray pipe to deform and shift. Additionally, stress deformation may occur when using the pipe in alternating hot and cold environments. Therefore, fine-tuning in eight directions using the above methods is necessary to ensure centering.

[0033] To address the production and quality requirements of continuous casting machines, improve casting machine production efficiency, ensure uniform secondary cooling, and guarantee the surface and internal quality of cast billets, a non-standard innovative design of an eight-dimensional continuous casting spray centering adjustment method was developed. This method enables controllable and effectively reduced maintenance time, while ensuring the accuracy of the vertical dimension, straight-line distance, and centering dimension of the secondary cooling nozzle from the billet surface. Using this centering adjustment method, the vertical dimension and centering accuracy of the nozzle distance from the billet end face can be quickly adjusted accurately and efficiently, meeting installation precision requirements. This ensures the uniformity of secondary cooling of the continuous casting billet during actual production, thereby guaranteeing the stability and consistency of the internal and surface quality of high-quality special steel small square billets.

[0034] The advantages of the eight-dimensional continuous casting spray centering adjustment method of the present invention are as follows: 1) The nozzle centering accuracy can be quickly, conveniently and with high precision adjusted online through the design of two pairs of waist-shaped holes on the water ring bracket and the spray pipe adjustment block; 2) Eight-dimensional adjustment is achieved; 3) The installation difficulty is reduced, the efficiency is improved and the accuracy is guaranteed.

[0035] In addition to the embodiments described above, the present invention may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. An eight-dimensional continuous casting spray alignment adjustment method, characterized in that: The spray pipe (1) is movably mounted on the water ring support (2) by adjusting the block (3), and the angle of the spray pipe (1) on the water ring support (2) is adjusted by adjusting the block (3) to achieve centering; Several spray pipes (1) are evenly distributed on the outer circumference of the water ring support (2). Adjustment blocks (3) are fixedly provided on the upper middle and lower middle parts of the spray pipes (1) corresponding to the positions of the water ring support (2). First waist-shaped holes (301) are provided on both sides of the adjustment blocks (3). The water ring support (2) includes an annular steel pipe (203). A plurality of water outlet pipes (204) connected to the annular steel pipe (203) are vertically arranged on one side of the annular steel pipe (203). A plurality of U-shaped plates (201) are evenly distributed on the outer circumference of the annular steel pipe (203). A second waist-shaped hole (2011) is provided on the U-shaped plate (201). The spray pipe (1) is arranged in the U-shaped plate (201) through the adjusting block (3). A water inlet pipe (206) and a fixing plate (208) are also provided on the outer circumference of the annular steel pipe (203).

2. The eight-dimensional continuous casting spray centering adjustment method according to claim 1, characterized in that: The adjusting block (3) has a U-shaped groove (302) in the middle for placing the spray pipe (1). The adjusting block (3) has a first waist-shaped hole (301) on both sides of the U-shaped groove (302). The first waist-shaped hole (301) and the second waist-shaped hole (2011) are arranged perpendicularly. The first waist-shaped hole (301) and the second waist-shaped hole (2011) are connected by bolts.

3. The eight-dimensional continuous casting spray centering adjustment method according to claim 1, characterized in that: One end of the spray pipe (1) is the upper opening of the spray pipe, and the other end is the lower opening of the spray pipe. Several nozzles (4) are evenly distributed along the length of the spray pipe (1), and the nozzles (4) face the billet set in the water ring support (2).

4. The eight-dimensional continuous casting spray centering adjustment method according to claim 3, characterized in that: The nozzle (4) is connected to the spray pipe (1) via the nozzle connecting block (5).

5. The eight-dimensional continuous casting spray centering adjustment method according to claim 1, characterized in that: The nozzle connecting block (5) is connected to the nozzle (4) via a steel pipe (9) near the upper opening of the spray pipe (1).

6. The eight-dimensional continuous casting spray centering adjustment method according to claim 1, characterized in that: A steel plate (6) is provided at the upper end of the spray pipe, and a threaded joint plate (7) is provided at the lower end of the spray pipe. A drain bolt (8) is provided on the threaded joint plate (7).

7. The eight-dimensional continuous casting spray centering adjustment method according to claim 1, characterized in that: The spray pipe (1) is a square pipe, which is divided into a left channel and a right channel. Compressed air is introduced into the left channel of the square pipe, and cold water is introduced into the right channel of the square pipe.

8. The eight-dimensional continuous casting spray centering adjustment method according to claim 1, characterized in that: The annular steel pipe (203) is divided into upper and lower parts. The upper part of the annular steel pipe (203) is filled with cold water, and the lower part of the annular steel pipe (203) is filled with compressed air.

9. The eight-dimensional continuous casting spray centering adjustment method according to claim 1, characterized in that: Two fixing plates (208) are symmetrically arranged, and the fixing plates (208) are set on the outer circumference of the water ring bracket (2) through the connecting plate (207).

10. The eight-dimensional continuous casting spray alignment adjustment method according to claim 1, characterized in that: The U-shaped plate (201) includes a U-shaped plate body (2012) and a base (2013). The U-shaped plate body (2012) has two second waist-shaped holes (2011). The base (2013) has an arc-shaped structure that is adapted to the outer circumference of the annular steel pipe (203). One end of the base (2013) is connected to the annular steel pipe (203), and the other end is connected to the U-shaped plate body (2012).

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