Strip steel floating device performance test system and use method thereof
By designing a performance testing system for strip steel floaters, simulating the suspension state inside the annealing furnace, the lack of performance testing for floaters was solved, enabling refined testing and optimization, and ensuring stable production of the annealing furnace.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-21
- Publication Date
- 2026-04-03
AI Technical Summary
The lack of dedicated equipment and methods for testing the performance of flotation devices makes it impossible to systematically understand their performance, which limits their application and promotion in non-oriented silicon steel coating baking ovens.
A strip steel float performance testing system was designed, including a strip steel tensioning device and an air jet pipe frame device. By adjusting the direction, spacing and air pressure of the air jet pipes, the suspension state of the strip steel in the annealing furnace is simulated to test the performance of the float.
The performance of the flotation device was refined and optimized to ensure its stable operation in the annealing furnace, avoid deformation in the width direction of the strip, meet process requirements, and ensure the stability of the unit's production.
Smart Images
Figure CN121783530A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of forming, maintaining, or circulating air pressure in a heating chamber, specifically to a performance testing system for a steel strip float and its usage method. Background Technology
[0002] The flotation unit is a crucial and absolutely core component of the flotation furnace in non-oriented silicon steel coating baking ovens. It acts as an air cushion, supporting the strip and preventing it from contacting the furnace rollers. Therefore, the strip can achieve complete contact with the furnace rollers throughout the entire flotation furnace process, ensuring the quality and performance of the strip surface coating. This is especially important for self-adhesive and environmentally friendly coatings, as the special properties and requirements of these coatings necessitate that the coated strip not contact the furnace rollers within the furnace. Thus, the flotation unit plays a vital and irreplaceable role. Currently, there is a lack of dedicated equipment and methods for testing the performance of flotation units, hindering a systematic understanding of their performance and limiting their further development and widespread application. Summary of the Invention
[0003] In order to overcome the shortcomings of the existing technology and provide a furnace auxiliary equipment with accurate working condition simulation and strong environmental adaptability, this invention discloses a strip steel float performance testing system and its usage method.
[0004] The present invention achieves its objective through the following technical solution: A strip float performance testing system includes a strip tensioning device, characterized in that it further includes an air spray pipe frame device and a strip float, the air spray pipe frame device spans across the strip tensioning device, and the strip float is located inside the air spray pipe frame device and faces the strip tensioning device.
[0005] The aforementioned strip steel float performance testing system is characterized by: The strip tensioning device includes a column, strip steel, flexible steel wire rope, a first transition plate, a second transition plate, and a spiral buckle. Two columns are fixed vertically to the ground. A steel strip is placed between the two columns. The two ends of the steel strip are connected to the two columns by a flexible steel wire rope. Each flexible steel wire rope is connected in sequence with a first transition plate, a second transition plate and a spiral buckle. The air jet duct support assembly includes a bracket, a hanger, and air jet ducts. The support frame spans the strip steel, and the hanger is a square frame. The hanger is suspended and fixed at the top inside the support frame and directly opposite the strip steel. There are at least three air spray pipes, and each air spray pipe is fixed parallel to each other at the bottom of the hanger. The bottom of the strip float is fixed inside the support frame and cut directly below the strip. The spray nozzle of the strip float is perpendicular to the direction of travel of the strip.
[0006] The aforementioned strip steel float performance testing system is characterized by: The strip tensioning device also includes a tension gauge; The air jet pipe support device also includes adjusting screws and clamps. The hanger is suspended and fixed to the top of the support frame and directly opposite the strip steel by adjusting screws at the four corners. Each air jet pipe is parallel to each other and fixed to the bottom of the hanger by clamps. Since there are evenly arranged holes on the four angle steels that make up the hanger, the spacing and direction of at least three air jet pipes (which can be perpendicular to the strip steel or parallel to the strip steel) can be adjusted according to experimental requirements.
[0007] The method of using the strip steel float performance testing system is characterized by the following steps being performed sequentially: S1. Installation: The air jet frame is straddling the strip tensioning device, and the strip float is located inside the air jet frame and directly opposite the strip tensioning device, including: S1.1 The strip tensioning device includes a column, strip steel, flexible steel wire rope, first transition plate, second transition plate, spiral buckle, and tension gauge. Two columns are fixed vertically to the ground. A strip is placed between the two columns. The two ends of the strip are connected to the two columns by a flexible steel wire rope. A first transition plate, a second transition plate, and a spiral buckle are connected in series on each flexible steel wire rope. A tension meter is connected in series on the flexible steel wire rope at one end of the strip and is placed between the second transition plate and the spiral buckle. S1.2 The air jet pipe support assembly includes a bracket, a hanger, an air jet pipe, and clamps. The support frame is straddled on the strip steel. The hanger is a square frame. The hanger is suspended and fixed at the top inside the support frame and directly opposite the strip steel. There are at least three air spray pipes. Each air spray pipe is fixed parallel to each other at the bottom of the hanger. S1.3 The bottom of the strip float is fixed inside the bracket and cut directly below the strip, so that the spray slit of the strip float is perpendicular to the direction of travel of the strip. S2. Tensioning: Adjust the length of the two spiral buckles at both ends of the strip to establish tension in the strip. Detect the tension value F of the strip using a tension meter, measure the length L and width W of the strip, and calculate the stress value σ of the strip according to formula (a). σ= —(a); S3. Bottom blowing: Input the required air into the strip floater, so that the air is sprayed from the nozzle of the strip floater onto the strip, thereby suspending the strip. Observe the suspension state of the strip and record the pressure value P1 and flow rate value Q1 of the air sprayed from the strip floater. S4. Top blowing: The air required for the experiment is introduced into each air spray pipe. There are small holes evenly distributed at the bottom of the air spray pipe, so that the air is sprayed out from the bottom of the air spray pipe. Observe the suspension state of the strip and record the air pressure value P2 and flow rate value Q2 in each air spray pipe. S5. Adjustment: Adjust parameters such as P1 / Q1, P2 / Q2, the direction A of the air jet pipe (perpendicular or parallel to the strip), the distance S1 between two adjacent air jet pipes, and the distance S2 between the air jet pipe and the strip in real time to ensure that the strip achieves stable operation and normal suspension under different tension conditions. When the suspension state of the strip meets the corresponding indicators, record the parameters P1 / Q1, P2 / Q2, A, S1, and S2 at this time.
[0008] The method of using the strip steel float performance testing system is characterized by the following steps being performed sequentially: S1. Installation: The air jet frame is straddling the strip tensioning device, and the strip float is located inside the air jet frame and directly opposite the strip tensioning device, including: S1.1 The strip tensioning device includes a column, strip steel, flexible steel wire rope, first transition plate, second transition plate, spiral buckle, and tension gauge. Two columns are fixed vertically to the ground. A strip is placed between the two columns. The two ends of the strip are connected to the two columns by a flexible steel wire rope. A first transition plate, a second transition plate, and a spiral buckle are connected in series on each flexible steel wire rope. A tension meter is connected in series on the flexible steel wire rope at one end of the strip and is placed between the second transition plate and the spiral buckle. S1.2 The air jet pipe support assembly includes a bracket, a hanger, an air jet pipe, an adjusting screw, and a clamp. The support frame is straddling the strip steel. The hanger is a square frame. The hanger is suspended and fixed to the top of the support frame and directly facing the strip steel by adjusting screws at the four corners. There are at least three air spray pipes. Each air spray pipe is parallel to the others and fixed to the bottom of the hanger by clamps. Since there are evenly distributed holes on the four angle steels that make up the hanger, the spacing and direction of the at least three air spray pipes (which can be perpendicular to or parallel to the strip steel) can be adjusted according to the experimental requirements. S1.3 The bottom of the strip float is fixed inside the bracket and cut directly below the strip, so that the spray slit of the strip float is perpendicular to the direction of travel of the strip. S2. Tensioning: Adjust the length of the two spiral buckles at both ends of the strip to establish tension in the strip. Detect the tension value F of the strip using a tension meter, measure the length L and width W of the strip, and calculate the stress value σ of the strip according to formula (a). σ= —(a); S3. Bottom blowing: Input the required air into the strip floater, so that the air is sprayed from the nozzle of the strip floater onto the strip, thereby suspending the strip. Observe the suspension state of the strip and record the pressure value P1 and flow rate value Q1 of the air sprayed from the strip floater. S4. Top blowing: The air required for the experiment is introduced into each air spray pipe. There are small holes evenly distributed at the bottom of the air spray pipe, so that the air is sprayed out from the bottom of the air spray pipe. Observe the suspension state of the strip steel and record the air pressure value P2 and flow rate value Q2 in each air spray pipe. S5. Adjustment: Adjust parameters such as P1 / Q1, P2 / Q2, the direction A of the air jet pipe (perpendicular or parallel to the strip), the distance S1 between two adjacent air jet pipes, and the distance S2 between the air jet pipe and the strip in real time to ensure that the strip achieves stable operation and normal suspension under different tension conditions. When the suspension state of the strip meets the corresponding indicators, record the parameters P1 / Q1, P2 / Q2, A, S1, and S2 at this time.
[0009] This invention can be used for testing and calibrating the performance indicators of floats used in various strip steel annealing furnaces, ultimately ensuring that the various performance indicators of the floats can meet the process requirements of the annealing furnace and guarantee the stable production of the unit.
[0010] The present invention has the following beneficial effects: 1. This invention can simulate the running state of strip steel in an annealing furnace (free state of left and right suspension) and can enable the strip steel to establish the tension required for the experiment, so as to truly and accurately reflect the performance of the strip steel floater; 2. When using this invention, the spacing, height, and direction of the air spray pipes at the top of the strip can be adjusted according to the experimental results, which can reflect the performance of the strip float under various working conditions; 3. Since the two ends of the strip are connected to the fixed point by flexible connecting ropes, the flexible connection used in this invention will not constrain the width direction of the strip, avoiding problems such as "convex and concave" deformation in the width direction of the strip caused by poor performance of the floater, which facilitates the fine-tuning and optimization of the floater's performance. Attached Figure Description
[0011] Figure 1 This is a top view of the present invention. Figure 2 This is the front view of the present invention. Figure 3 yes Figure 2 AA view. Detailed Implementation
[0012] The present invention will be further illustrated below through specific embodiments. Example
[0013] A strip float performance testing system includes a strip tensioning device 1, an air jet frame device 2, and a strip float 3, such as... Figures 1-3 As shown, the specific structure is: The air jet pipe frame device 2 is straddling the strip tensioning device 1, and the strip floater 3 is located inside the air jet pipe frame device 2 and directly opposite the strip tensioning device 1.
[0014] Specifically: The strip tensioning device 1 includes a column 11, a strip 12, a flexible steel wire rope 13, a first transition plate 14, a second transition plate 15, and a spiral buckle 16. Two columns 11 are fixed vertically on the ground respectively. A strip steel 12 is placed between the two columns 11. The two ends of the strip steel 12 are connected to the two columns 11 by a flexible steel wire rope 13. A first transition plate 14, a second transition plate 15 and a spiral buckle 16 are connected in series on each flexible steel wire rope 13. The air jet pipe support device 2 includes a bracket 21, a hanger 22, and an air jet pipe 23. The bracket 21 is straddling the strip steel 12. The hanger 22 is a square frame. The hanger 22 is suspended and fixed at the top inside the bracket 21 and directly opposite the strip steel 12. There are three air spray pipes 23, and each air spray pipe 23 is fixed parallel to each other at the bottom of the hanger 22. The bottom of the strip float 3, which is fixed inside the bracket 21, is cut directly below the strip 12, and the spray slit of the strip float 3 is perpendicular to the travel direction of the strip 12.
[0015] In this embodiment: The strip tensioning device 1 also includes a tension gauge 17; The air jet pipe support device 2 also includes adjusting screws 24 and clamps 25. The hanger 22 is suspended and fixed to the top of the support 21 and directly opposite the strip steel 12 by adjusting screws 24 at the four corners. Each air jet pipe 23 is parallel to each other and fixed to the bottom of the hanger 22 by clamps 25. Since there are evenly arranged holes on the four angle steels that make up the hanger 22, the spacing and direction of at least three air jet pipes 23 (which can be perpendicular to the strip steel or parallel to the strip steel) can be adjusted according to experimental requirements.
[0016] The support 21 is a steel structure; the hanger 22 is made of angle steel, and each side of the hanger 22 is provided with evenly spaced holes; the spacing and direction of each air pipe 23 (which can be perpendicular to or parallel to the strip steel 12) can be adjusted according to experimental requirements, and the distance between the air pipe 23 and the strip steel 12 can also be adjusted by adjusting the screw 24.
[0017] When using this embodiment, follow these steps in sequence: S1. Installation: The air jet frame device 2 is straddled on the strip tensioning device 1, and the strip floater 3 is located inside the air jet frame device 2 and directly opposite the strip tensioning device 1, including: S1.1 The strip tensioning device 1 includes a column 11, a strip 12, a flexible steel wire rope 13, a first transition plate 14, a second transition plate 15, a spiral buckle 16, and a tension gauge 17. Two columns 11 are fixed vertically to the ground respectively. A strip steel 12 is placed between the two columns 11. The two ends of the strip steel 12 are connected to the two columns 11 respectively through a flexible steel wire rope 13. A first transition plate 14, a second transition plate 15 and a spiral buckle 16 are connected in series on each flexible steel wire rope 13. A tension meter 17 is connected in series on the flexible steel wire rope 13 at one end of the strip steel 12 and is placed between the second transition plate 15 and the spiral buckle 16. S1.2 The air jet pipe support device 2 includes a bracket 21, a hanger 22, an air jet pipe 23, an adjusting screw 24, and a clamp 25. The support 21 is straddling the strip steel 12. The hanger 22 is a square frame. The hanger 22 is suspended and fixed to the top of the support 21 and directly facing the strip steel 12 by adjusting screws 24 at the four corners. There are at least three air spray pipes 23. Each air spray pipe 23 is parallel to each other and fixed to the bottom of the hanger 22 by clamps 25. Since there are evenly distributed holes on the four angle steels that make up the hanger 22, the spacing and direction of the at least three air spray pipes 23 (which can be perpendicular to the strip steel or parallel to the strip steel) can be adjusted according to the experimental requirements. S1.3 The bottom of the strip float 3 is fixed inside the bracket 21 and cut directly below the strip 12, so that the spray slit of the strip float 3 is perpendicular to the travel direction of the strip 12. S2. Tensioning: Adjust the length of the two spiral buckles 16 at both ends of the strip 12 to establish tension in the strip 12. Detect the tension value F of the strip 12 using a tension gauge 17, measure the length L and width W of the strip 12, and calculate the stress value σ of the strip 12 according to formula (a): σ= —(a); S3. Bottom blowing: Input the required air into the strip float 3, so that the air is sprayed from the nozzle of the strip float 3 to the strip 12, thereby suspending the strip 12. Observe the suspension state of the strip 12 and record the pressure value P1 and flow rate value Q1 of the air sprayed from the strip float 3. S4. Top blowing: The air required for the experiment is introduced into each air spray pipe 23. There are evenly distributed small holes at the bottom of the air spray pipe 23, so that the air is sprayed out from the bottom of the air spray pipe 23. Observe the suspension state of the strip steel 12 and record the air pressure value P2 and flow rate value Q2 in each air spray pipe 23. S5. Adjustment: Adjust parameters such as P1 / Q1, P2 / Q2, the direction A of the air jet pipe 23 (i.e., perpendicular or parallel to the strip steel direction), the distance S1 between two adjacent air jet pipes 23, and the distance S2 between the air jet pipe 23 and the strip steel 12 in real time to ensure that the strip steel 12 achieves stable operation and normal suspension under different tension conditions, that is, the strip steel 12 is stably suspended without drifting. When the suspension state of the strip steel 12 meets the corresponding indicators, record the parameters P1 / Q1, P2 / Q2, A, S1, and S2 at this time.
[0018] This embodiment can be used for testing and calibrating the performance indicators of floats used in various strip steel annealing furnaces, ultimately ensuring that the various performance indicators of the floats can meet the process requirements of the annealing furnace and guarantee the stable production of the unit.
Claims
1. A strip steel float performance testing system, comprising a strip steel tensioning device (1), characterized in that: It also includes a blower pipe frame device (2) and a strip steel floater (3). The blower pipe frame device (2) is straddling the strip steel tensioning device (1), and the strip steel floater (3) is located inside the blower pipe frame device (2) and directly opposite the strip steel tensioning device (1).
2. The strip steel float performance testing system as described in claim 1, characterized in that: The strip tensioning device (1) includes a column (11), a strip (12), a flexible steel wire rope (13), a first transition plate (14), a second transition plate (15), and a spiral buckle (16). Two columns (11) are fixed vertically on the ground respectively. A strip steel (12) is placed between the two columns (11). The two ends of the strip steel (12) are connected to the two columns (11) by a flexible steel wire rope (13). A first transition plate (14), a second transition plate (15) and a spiral buckle (16) are connected in series on each flexible steel wire rope (13). The air jet pipe support assembly (2) includes a bracket (21), a hanger (22), and an air jet pipe (23). The bracket (21) spans across the strip steel (12), the hanger (22) is a square frame, the hanger (22) is suspended and fixed at the top inside the bracket (21) and directly opposite the strip steel (12), there are at least three air pipes (23), and each air pipe (23) is fixed parallel to each other at the bottom of the hanger (22); The bottom of the strip float (3) is fixed inside the bracket (21) and cut directly below the strip (12). The spray slit of the strip float (3) is perpendicular to the travel direction of the strip (12).
3. The strip steel float performance testing system as described in claim 2, characterized in that: The strip tensioning device (1) also includes a tension gauge (17); The air jet pipe support device (2) also includes adjusting screws (24) and clamps (25). The hanger (22) is suspended and fixed at the top of the bracket (21) and directly opposite the strip steel (12) by adjusting screws (24) at the four corners. Each air jet pipe (23) is fixed to the bottom of the hanger (22) in parallel with each other by clamps (25). Since there are evenly arranged holes on the four angle steels that make up the hanger (22), the spacing and direction of at least three air jet pipes (23) (which can be perpendicular to the strip steel or parallel to the strip steel) can be adjusted according to experimental requirements.
4. The method of using the strip steel float performance testing system as described in claim 2 or 3, characterized in that: Follow these steps in sequence: S1. Installation: The air jet frame device (2) is straddled on the strip tensioning device (1), and the strip floater (3) is located inside the air jet frame device (2) and directly opposite the strip tensioning device (1), including: S1.1 The strip tensioning device (1) includes a column (11), a strip (12), a flexible steel wire rope (13), a first transition plate (14), a second transition plate (15), a spiral buckle (16), and a tension meter (17). Two columns (11) are fixed vertically on the ground respectively. A strip steel (12) is placed between the two columns (11). The two ends of the strip steel (12) are connected to the two columns (11) respectively through a flexible steel wire rope (13). A first transition plate (14), a second transition plate (15) and a spiral buckle (16) are connected in series on each flexible steel wire rope (13). A tension meter (17) is connected in series on the flexible steel wire rope (13) at one end of the strip steel (12) and is placed between the second transition plate (15) and the spiral buckle (16). S1.2 The air jet pipe support assembly (2) includes a bracket (21), a hanger (22), an air jet pipe (23), and a clamp (24). The bracket (21) is straddling the strip steel (12). The hanger (22) is a square frame. The hanger (22) is suspended and fixed at the top inside the bracket (21) and directly facing the strip steel (12). There are at least three air spray pipes (23), and each air spray pipe (23) is fixed at the bottom of the hanger (22) in parallel with each other. S1.3 The bottom of the strip float (3) is fixed inside the bracket (21) and cut directly below the strip (12), so that the spray slit of the strip float (3) is perpendicular to the travel direction of the strip (12). S2. Tensioning: Adjust the length of the two spiral buckles (16) at both ends of the strip (12) to establish tension in the strip (12). Detect the tension value F of the strip (12) using a tension meter (17), measure the length L and width W of the strip (12), and calculate the stress value σ of the strip (12) according to formula (a): σ= ——(a); S3. Bottom blowing: Input the air required for the experiment into the strip floater (3) so that the air is sprayed from the nozzle of the strip floater (3) to the strip (12) so that the strip (12) is suspended. Observe the suspension state of the strip (12) and record the pressure value P1 and flow rate value Q1 of the air sprayed from the strip floater (3). S4. Top blowing: The air required for the experiment is introduced into each air pipe (25). There are small holes evenly distributed at the bottom of the air pipe (23) so that the air is sprayed out from the bottom of the air pipe (23). Observe the suspension state of the strip (12) and record the air pressure value P2 and flow rate value Q2 in each air pipe (25). S5. Adjustment: Adjust parameters such as P1 / Q1, P2 / Q2, the direction A of the air jet pipe (23) (i.e., perpendicular or parallel to the strip steel direction), the distance S1 between two adjacent air jet pipes (23), and the distance S2 between the air jet pipe (23) and the strip steel (12) in real time, so that the strip steel (12) can achieve stable operation and normal suspension under different tension conditions. When the suspension state of the strip steel (12) meets the corresponding indicators, record the parameters P1 / Q1, P2 / Q2, A, S1 and S2 at this time.
5. The method of using the strip steel float performance testing system as described in claim 3, characterized in that: Follow these steps in sequence: S1. Installation: The air jet frame device (2) is straddled on the strip tensioning device (1), and the strip floater (3) is located inside the air jet frame device (2) and directly opposite the strip tensioning device (1), including: S1.1 The strip tensioning device (1) includes a column (11), a strip (12), a flexible steel wire rope (13), a first transition plate (14), a second transition plate (15), a spiral buckle (16), and a tension gauge (17). Two columns (11) are fixed vertically on the ground respectively. A strip steel (12) is placed between the two columns (11). The two ends of the strip steel (12) are connected to the two columns (11) respectively through a flexible steel wire rope (13). A first transition plate (14), a second transition plate (15) and a spiral buckle (16) are connected in series on each flexible steel wire rope (13). A tension meter (17) is connected in series on the flexible steel wire rope (13) at one end of the strip steel (12) and is placed between the second transition plate (15) and the spiral buckle (16). S1.2 The air jet pipe support device (2) includes a bracket (21), a hanger (22), an air jet pipe (23), an adjusting screw (24), and a clamp (25). The support (21) is straddling the strip (12). The hanger (22) is a square frame. The hanger (22) is suspended and fixed to the top of the support (21) and facing the strip (12) through the adjusting screws (24) at the four corners. There are at least three air pipes (23). Each air pipe (23) is parallel to each other and fixed to the bottom of the hanger (22) by clamps (25). Since there are evenly arranged holes on the four angle steels that make up the hanger (22), the spacing and direction of the at least three air pipes (23) (which can be perpendicular to the strip or parallel to the strip) can be adjusted according to the experimental requirements. S1.3 The bottom of the strip float (3) is fixed inside the bracket (21) and cut directly below the strip (12), so that the spray slit of the strip float (3) is perpendicular to the travel direction of the strip (12). S2. Tensioning: Adjust the length of the two spiral buckles (16) at both ends of the strip (12) to establish tension in the strip (12). Detect the tension value F of the strip (12) using a tension meter (13), measure the length L and width W of the strip (12), and calculate the stress value σ of the strip (12) according to formula (a): σ= ——(a); S3. Bottom blowing: Input the air required for the experiment into the strip floater (3) so that the air is sprayed from the nozzle of the strip floater (3) to the strip (12) so that the strip (12) is suspended. Observe the suspension state of the strip (12) and record the pressure value P1 and flow rate value Q1 of the air sprayed from the strip floater (3). S4. Top blowing: The air required for the experiment is introduced into each air pipe (25). There are small holes evenly distributed at the bottom of the air pipe (23) so that the air is sprayed out from the bottom of the air pipe (23). Observe the suspension state of the strip (12) and record the air pressure value P2 and flow rate value Q2 in each air pipe (25). S5. Adjustment: Adjust parameters such as P1 / Q1, P2 / Q2, the direction A of the air jet pipe (23) (i.e., perpendicular or parallel to the strip steel direction), the distance S1 between two adjacent air jet pipes (23), and the distance S2 between the air jet pipe (23) and the strip steel (12) in real time, so that the strip steel (12) can achieve stable operation and normal suspension under different tension conditions. When the suspension state of the strip steel (12) meets the corresponding indicators, record the parameters P1 / Q1, P2 / Q2, A, S1 and S2 at this time.