A continuous casting slab sample testing device

Abstract

The application belongs to the field of continuous casting slab production technology, and discloses a continuous casting slab sample inspection device. A sample etching part (1) comprises an upper telescopic part (3) and a lower telescopic part (4), and a sample (5) is carried on the lower telescopic part (4); a sample etching part (2) comprises an etching tank (7), a sample carrier (27) is arranged in the etching tank (7), a tank cover (8) is arranged on the upper portion of the etching tank (7), a spray pipe (9) is arranged on the tank cover (8), and a nozzle (10) is arranged on the spray pipe (9). The continuous casting slab sample inspection device has simple structure, can effectively improve the sample milling and grinding leveling control precision, greatly improves the sample milling and grinding leveling efficiency, improves the corrosion effect during the sample etching process, can realize intelligent closed corrosion, prevents the contact between acid gas and human bodies, and guarantees the safety of personnel.

Description

Technical Field

[0001] This invention belongs to the field of continuous casting slab production technology, and more specifically, relates to a continuous casting slab sample inspection device. Background Technology

[0002] (1) Journal article "Application of Low-Magnification Pickling Automation System": The low-magnification pickling method used in the paper consists of five major systems: automatic acid preparation system, automatic transport system, automatic pickling system, automatic cleaning system, and automatic neutralization and discharge treatment of acid mist and waste liquid. After the low-magnification sample is milled, it is hoisted onto the sample transport trolley (set as the origin). The worker selects carbon steel / stainless steel and confirms that the automatic pickling system is ready. The emergency stop button is reset, and the run button is pressed and held to start the system. After the automatic transport system delivers the trolley to the designated position, the hoisting device lifts the sample and places it into the cold / hot acid tank, and the automatic pickling system is started. After pickling, the automatic cleaning system lifts the sample out of the cold / hot acid tank and places it into the cleaning tank for automatic cleaning and drying. Then, the automatic transport system puts the sample back into the transport trolley to return to the origin. Although the degree of automation is high, the pickling process is complicated, the process is too long, and the efficiency is low.

[0003] (2) Invention Patent "Low-Magnification Acid Etching Method and Fully Automatic Low-Magnification Acid Etching System" (Authorization Announcement No. CN103454437 B): This invention discloses a low-magnification acid etching method and a fully automatic low-magnification acid etching system. The method includes: cutting the sample with a flame cutter; transporting the cut sample to an automatic testing platform for cooling by a forklift; hoisting the sample to a milling machine for processing by an automatic crane; transporting the processed sample to a fully automatic electrolytic etching machine for etching and cleaning; transporting the sample to a photographing point by a conveyor belt, automatically photographing the sample, and returning the sample to the shelf. The sample processing is divided into two processes. A second cutting is required before milling. The milling operation is divided into two steps: milling and grinding. The processing efficiency is low and the time is long. The spraying method is manual and there is no acid circulation function. Electrolytic etching is used, and the etching time is long.

[0004] (3) Invention Patent "A Method for Using a Reagent for Low-Magnification Microstructure and Defect Cold Erosion Display of Continuously Cast Steel Billets" (Application Publication No. CN 112362438) A): This invention discloses a method for using a cold etching display reagent for low-magnification microstructure and defects of continuously cast steel billets, comprising the following steps: machining the billet to be tested to a smooth surface; placing the billet horizontally in an acid-alkali resistant dish with the test surface facing upwards; wiping away oil stains on the test surface with anhydrous ethanol; moving the acid-alkali resistant dish into a fume hood and ventilating; adjusting the sample to make its test surface horizontal; applying the cold etching display reagent evenly to the sample surface with a brush, wherein the cold etching display reagent is composed of nitric acid, sulfuric acid, hydrochloric acid and water, wherein the percentage content of nitric acid, sulfuric acid and hydrochloric acid is 5-15%, and the remainder is supplemented by water to 100%; repeating the operation after waiting for a predetermined time until the microstructure and defects of the billet are clearly displayed; rinsing with clean water and brushing with a special brush; drying the sample surface with a hair dryer; acquiring images with a digital camera and rating according to relevant standards; the display method of this invention is not limited by the sample size and does not require specialized large-scale testing equipment.

[0005] The acid etching method involves manually applying a cold etching revealing agent to the sample surface using a brush, waiting for a predetermined time, and repeating the process until the billet's structure and defects are clearly visible. This method has low automation and is labor-intensive. Although it greatly reduces acid fumes, it is still difficult to avoid the acid fumes causing harm to workers and polluting the environment.

[0006] However, the prior art does not address the technical issues and solutions of this application. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a continuous casting slab sample inspection device that is simple in structure, can effectively improve the control accuracy of sample milling and leveling, greatly improve the efficiency of sample milling and leveling, improve the corrosion effect during sample acid etching, realize intelligent closed corrosion, prevent acid gas from contacting the human body, and ensure personnel safety.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0009] This invention relates to a test device for continuously cast slab samples, comprising a sample milling and leveling component and a sample etching component. The sample etching component includes an upper telescopic component and a lower telescopic component. The sample is supported on the lower telescopic component. When the sample is milled and leveled, the upper telescopic component first moves downward to its designated position, defining the upper position and plane. The lower telescopic component then moves upward, causing the sample to press against the upper telescopic component. The clamping telescopic component clamps the sample. The upper telescopic component then moves upward back to its initial position. The sample etching component includes an etching tank, a sample support component is installed inside the etching tank, a tank cover is installed on the top of the etching tank, a spray pipe is installed on the tank cover, and a nozzle is installed on the spray pipe.

[0010] The upper telescopic component is provided in multiple ways, and the lower telescopic component is provided in multiple ways.

[0011] The groove cover is provided with a first rod and a second rod. Multiple left positioning blocks are movably connected to the first rod with a gap, and multiple right positioning blocks are movably connected to the second rod with a gap. Each left positioning block and a corresponding right positioning block are connected by a spring.

[0012] The left positioning block includes a left latch and a left body. The left latch has a C-shaped structure, and the left body is movably connected to the first rod. The right positioning block includes a right latch and a right body. The right latch has a C-shaped structure, and the right body is movably connected to the second rod. The left and right latches are connected by a spring and are arranged symmetrically.

[0013] A translational telescopic component is provided between the trough cover and the spray pipe.

[0014] The spray pipe is connected to one end of the acid inlet pipe, and the other end of the acid inlet pipe is connected to the acid storage tank. The acid etching tank 7 is connected to the acid storage tank through the acid return pipe.

[0015] The continuous casting slab sample inspection device includes a milling component, which includes a milling cutter and a milling leveling component. The milling cutter of the milling component integrates milling and grinding.

[0016] When the milling component rough mills the sample, the milling cutter for die steel and high carbon steel uses a depth of cut of 2mm-3mm, and the milling cutter for low carbon steel uses a depth of cut of 3mm-4mm. When the milling component finishes the sample, the depth of cut is 0.2mm-0.5mm. The finishing milling cutting speed is divided into three levels: 80-95mm / min for low carbon steel milling cutters, 70-80mm / min for high carbon steel milling cutters, and 60mm / min for die steel milling cutters. After finishing milling, the surface roughness Ra of the sample is ≤0.8μm.

[0017] The upper telescopic component has two parts, and the lower telescopic component has six parts.

[0018] The lower telescopic cylinder is fixed to the component base, and a sample support is provided on the upper part of the lower telescopic cylinder. The sample support is provided with a fixing clamping component and a clamping telescopic component.

[0019] The working principle and beneficial effects of the technical solution adopted in this invention are as follows:

[0020] The continuous casting slab sample inspection device of this invention features structural improvements to the sample milling and leveling components and the sample etching components. The sample etching component includes an upper telescopic component and a lower telescopic component. The upper telescopic component is located above the lower telescopic component and can extend downwards and retract upwards, while the lower telescopic component can extend upwards and retract downwards. Before milling the sample, it must be leveled. During leveling, the control component moves the upper telescopic component downwards to its designated position. The position is set according to the different sample models and sizes. The downward position of the upper telescopic component defines the upper and planar positions of the sample, serving as a reference for sample leveling. The control component then moves the lower telescopic component upwards, causing the sample to press against the upper telescopic component. Once the sample presses against the upper telescopic component, it cannot move further, thus achieving the correct upward position. The control component then controls the clamping telescopic component to clamp the sample. Finally, the control component moves the upper telescopic component upwards again, returning it to its initial position. At this point, the sample is leveled and clamped, ready for milling. After milling the sample, etching is required. This necessitates the use of a sample etching component. The etching tank within this component holds the sample carrier, and a cover is installed at the top. The cover is opened, the sample is placed inside, and then the cover is closed. A spray pipe is mounted on the cover, and a control unit regulates the acid supply from a storage tank, enabling the nozzles on the spray pipe to spray the acid onto the sample for reliable etching. This structure allows for the recycling of the etching acid. The spray pipe automatically and evenly sprays the etching solution onto the sample surface through the nozzles, effectively improving the etching effect. Attached Figure Description

[0021] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0022] Figure 1 This is a schematic diagram of the sample milling and leveling component of the continuous casting slab sample inspection device of the present invention;

[0023] Figure 2 This is a schematic diagram of the sample etching component of the continuous casting slab sample inspection device of the present invention;

[0024] Figure 3 This is a schematic diagram of the positioning block of the continuous casting slab sample inspection device of the present invention;

[0025] The labels in the attached diagram are as follows: 1. Sample milling and leveling component; 2. Sample etching component; 3. Upper telescopic component; 4. Lower telescopic component; 5. Sample; 6. Clamping telescopic component; 7. Etching tank; 8. Sample carrier; 9. Spray pipe; 10. Nozzle; 11. First rod; 12. Second rod; 13. Left positioning block; 14. Right positioning block; 15. Spring; 16. Left latch; 17. Left body; 18. Right latch; 19. Right body; 20. Translational telescopic component; 21. Acid inlet pipe; 22. Acid storage tank; 23. Acid return pipe; 24. Component base; 25. Sample carrier seat; 26. Fixing clamping component; 27. Sample carrier; 28. Circulation pump. Detailed Implementation

[0026] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of the present invention, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0027] As attached Figure 1 -Appendix Figure 3As shown, this invention is a continuous casting slab sample inspection device, including a sample milling and leveling component 1 and a sample etching component 2. The sample etching component 1 includes an upper telescopic component 3 and a lower telescopic component 4. The sample 5 is supported on the lower telescopic component 4. When the sample 5 is milled and leveled, the upper telescopic component 3 first moves downward to its designated position, defining the upper position and plane. The lower telescopic component 4 then moves upward, causing the sample 5 to press against the upper telescopic component 3. The clamping telescopic component 6 clamps the sample 5. The upper telescopic component 3 then moves upward back to its initial position. The sample etching component 2 includes an etching tank 7, a sample support component 8 is installed inside the etching tank 7, a tank cover 8 is installed on the top of the etching tank 7, a spray pipe 9 is installed on the tank cover 8, and a nozzle 10 is installed on the spray pipe 9. The above structure addresses the shortcomings of the prior art by proposing an improved technical solution. The structure of the sample milling and leveling component 1 and the sample etching component 2 are improved respectively. For the sample etching component 1, which includes an upper telescopic component 3 and a lower telescopic component 4, the upper telescopic component 3 is located above the lower telescopic component 4. The upper telescopic component 3 can extend downwards and retract upwards, while the lower telescopic component 4 can extend upwards and retract downwards. Before milling the sample 5, the sample 5 must be leveled. During leveling, the control component controls the upper telescopic component 3 to move downwards into position. The position of the upper telescopic component 3 after moving downwards defines the upper position and planar position of the sample 5, serving as a reference for ensuring the leveling of the sample 5. The control component then controls the lower telescopic component 4 to move upwards, causing the sample 5 to press against the upper telescopic component 3. After pressing against the upper telescopic component 3, the sample 5 can no longer move, thus achieving the upward movement of the sample 5 into position. Then, the control component controls the clamping telescopic component 6 to clamp the sample 5. The control component then controls the upper telescopic component 3 to move upwards again, returning to its initial position. At this point, the sample 5 is leveled and clamped, ready for milling operations. After the milling of sample 5, etching is required. This necessitates the use of sample etching component 2. The etching tank 7 of component 2 houses the sample carrier 8. A tank cover 8 is installed on top of the etching tank 7. The tank cover is opened, sample 5 is placed inside, and then the tank cover 8 is closed. A spray pipe 9 is installed on the tank cover 8. A control unit controls the acid supply from the acid storage tank, enabling the nozzles 10 on the spray pipe 9 to spray acid onto the sample for reliable etching. This structure allows for the recycling of the etching acid. The spray pipe 9, through the nozzles 10, can automatically and evenly spray the etching solution onto the surface of sample 5, effectively improving the etching effect. The continuous casting slab sample inspection device of this invention has a simple structure, effectively improves the control accuracy of sample milling and leveling, significantly increases sample milling and leveling efficiency, and enhances the etching effect during sample etching. It can achieve intelligent closed-loop etching, preventing acid fumes from contacting the human body and ensuring personnel safety.

[0028] Multiple upper telescopic components 3 and multiple lower telescopic components 4 are provided. In this structure, the upper telescopic components 3 control the position and plane from above, and the lower telescopic components 4 control the plane from below, thereby effectively achieving sample leveling and ensuring the accuracy of subsequent milling and grinding processes.

[0029] The slot cover 8 is provided with a first rod 11 and a second rod 12. Multiple left positioning blocks 13 are movably connected to the first rod 11 with gaps, and multiple right positioning blocks 14 are movably connected to the second rod 12 with gaps. Each left positioning block 13 and a corresponding right positioning block 14 are connected by a spring 15. Each left positioning block 13 includes a left latch 16 and a left body 17. The left latch 16 has a C-shaped structure, and the left body 17 is movably connected to the first rod 11. Each right positioning block 14 includes a right latch 18 and a right body 19. The right latch 18 has a C-shaped structure, and the right body 19 is movably connected to the second rod 12. The left latch 16 and right latch 18 are connected by springs 15 and are symmetrically arranged. With this structure, the multiple left positioning blocks 13 can rotate flexibly relative to the first rod 11, and the multiple right positioning blocks 14 can rotate flexibly relative to the second rod 12. The system allows the spray pipe 9 to be movably secured between multiple left positioning blocks 13 and multiple right positioning blocks 14. One end of a spring 15 hooks onto the left positioning block 13, and the other end hooks onto the right positioning block 14, reliably tightening the left and right positioning blocks 13 and 14 to position the spray pipe 9. The spring 15 can be easily removed and connected. This facilitates quick and easy removal and installation of the spray pipe 9, making it convenient to use.

[0030] A translational telescopic component 20 is provided between the tank cover 8 and the spray pipe 9. This structure, controlled by a control component, extends and retracts the translational telescopic component 20, causing the spray pipe 9 to move along the positions defined by multiple left positioning blocks 13 and multiple right positioning blocks 14. This allows for reliable positional changes during acid etching spraying, effectively increasing the spray coverage area and improving the overall effect.

[0031] The spray pipe 9 is connected to one end of the acid inlet pipe 21, and the other end of the acid inlet pipe 21 is connected to the acid storage tank 22. The etching tank 7 is connected to the acid storage tank 22 through the acid return pipe 23. In the above structure, the main etching equipment includes an etching tank (cold acid etching tank, etching tank), an acid storage tank, a supporting circulating pump, electric valves, pipelines, a level gauge, and cylinders. The pickling tank supplies acid to the etching tank through the acid inlet pipe 21. The etching tank is also equipped with an acid return pipe and an electric valve. The acid inlet pipe and the acid return pipe are respectively connected to the acid storage tank to achieve the recycling of the etching solution. The etching tank cover is equipped with a spray pipe with multiple nozzles, which can automatically and evenly spray the etching solution onto the sample surface. Acid etching process: An automatic spraying method is adopted. After the sample is machined with milled parts, it is transferred to the etching tank. After the test surface is cleaned, the tank cover is closed. After setting the acid etching time, the automatic spraying is started. After spraying ends, the sample is left to stand for 5 minutes, then brushed and rinsed with clean water. Finally, the sample is dried with compressed air. The etching solution used in the test is normally stored in the acid storage tank. When in use, the circulation pump on the acid storage tank pumps the etching solution into the etching tank 7. The acid return valve at the bottom of the etching tank is opened, and the etching solution flows back into the acid storage tank. The etching solution circulates in the acid storage tank, the etching tank, and the pipeline. The acid storage tank is equipped with a circulation pump, radar level gauge, acid return port, and vent for the circulation of the etching solution, the detection of the etching solution level, and the balancing of the pressure inside the tank.

[0032] The continuously cast slab sample inspection device includes a milling and grinding component, which comprises a milling and grinding cutter and a milling and grinding leveling component 1. The milling and grinding cutter of the milling and grinding component integrates milling and grinding functions. The above steps reliably realize the milling and grinding operations of sample 5 through a set of components.

[0033] When the milling component rough mills sample 5, the milling cutters for mold steel and high-carbon steel use a depth of cut of 2mm-3mm, while the milling cutters for low-carbon steel use a depth of cut of 3mm-4mm. When the milling component finishes sample 5, the depth of cut is 0.2mm-0.5mm. The finish milling cutting speed is divided into three levels: 80-95mm / min for low-carbon steel milling cutters, 70-80mm / min for high-carbon steel milling cutters, and 60mm / min for mold steel milling cutters. After finish milling, the surface roughness Ra of sample 5 is ≤0.8μm. The above steps effectively improve both rough and finish milling, thus improving the milling quality of the sample.

[0034] The upper telescopic component 3 is provided in two parts, and the lower telescopic component 4 is provided in six parts. In the above structure, the top consists of two upper telescopic components 3, which can be fixed-height hydraulic cylinders to determine the position of the upper plane of the sample. The bottom consists of six upper-lifting hydraulic cylinders. When the sample moves upward, since the upper hydraulic cylinders limit the height of the upper surface, the lower hydraulic cylinders will push the sample until it can no longer move upward. Then, the clamping cylinders will tighten the sample, and the upper cylinders will retract to their original positions, thus completing the leveling of the entire sample.

[0035] The lower telescopic cylinder 4 is fixed to the component base 24 at its lower part, and a sample carrier 25 is provided on the upper part of the lower telescopic cylinder 4. A fixing clamping component 26 and a clamping telescopic component 6 are provided on the sample carrier 25. In the above structure, the component base 24 is the foundation of the milling and leveling component 1 and is used to set the lower telescopic component 4. The lower telescopic component 4 is fixedly connected to the sample carrier 25, which is used to place the sample. The fixing clamping component 26 and the clamping telescopic component 6 are used to clamp and limit the sample from different directions, which facilitates the milling operation of the sample.

[0036] The continuous casting slab sample inspection device of the present invention improves the structure of the sample milling and leveling component 1 and the sample etching component 2. The sample etching component 1 includes an upper telescopic component 3 and a lower telescopic component 4. The upper telescopic component 3 is located above the lower telescopic component 4. The upper telescopic component 3 can extend downwards and retract upwards, and the lower telescopic component 4 can extend upwards and retract downwards. Before milling the sample 5, the sample 5 is first leveled. During leveling, the control component controls the upper telescopic component 3 to move downwards into position. The position of the movement is set according to different sample models and sizes. The position of the upper telescopic component 3 after moving downwards defines the upper position and planar position of the sample 5, serving as a reference to ensure the leveling of the sample 5. The control unit then controls the lower telescopic component 4 to move upwards, causing the sample 5 to press against the upper telescopic component 3. Once the sample 5 presses against the upper telescopic component 3, it can no longer move, thus completing the upward movement of the sample 5. The control unit then controls the clamping telescopic component 6 to clamp the sample 5. The control unit then controls the upper telescopic component 3 to move upwards again, returning to its initial position. At this point, the sample 5 is leveled and clamped, ready for milling. After milling, the sample 5 needs to be etched. This is done using the sample etching component 2. The etching tank 7 of the sample etching component 2 is used to place the sample carrier 8. A tank cover 8 is installed on the top of the etching tank 7. The tank cover is opened, the sample 5 is placed in, and then the tank cover 8 is closed. A spray pipe 9 is installed on the tank cover 8. The control unit controls the acid storage tank to supply acid, allowing the nozzles 10 on the spray pipe 9 to spray acid onto the sample for reliable etching. This structure allows for the recycling of the etching acid. The spray pipe 9, through the nozzles 10, can automatically and evenly spray the etching solution onto the surface of the sample 5, effectively improving the etching effect.

[0037] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A test device for continuously cast slab samples, characterized in that: The sample includes a sample milling and leveling component (1) and a sample etching component (2). The sample etching component (2) includes an upper telescopic component (3) and a lower telescopic component (4). The sample (5) is supported on the lower telescopic component (4). When the sample (5) is milled and leveled, the upper telescopic component (3) moves downward to the position to define the upper position and plane. The lower telescopic component (4) then moves upward to drive the sample (5) to press against the upper telescopic component (3). The clamping telescopic component (6) clamps the sample (5). The upper telescopic component (3) then moves upward back to the initial position. The sample etching component (2) includes an etching tank (7). A sample support component (27) is set inside the etching tank (7). A tank cover (8) is set on the top of the etching tank (7). A spray pipe (9) is set on the tank cover (8). A nozzle (10) is set on the spray pipe (9). Multiple upper telescopic components (3) and multiple lower telescopic components (4) are provided; The groove cover (8) is provided with a first rod (11) and a second rod (12). Multiple left positioning blocks (13) are movably connected to the first rod (11) with a gap, and multiple right positioning blocks (14) are movably connected to the second rod (12) with a gap. Each left positioning block (13) and a corresponding right positioning block (14) are connected by a spring (15). The lower telescopic component (4) is fixed on the component base (24) at the bottom, and a sample carrier (25) is provided on the upper part of the lower telescopic component (4). A fixing clamping component (26) and a clamping telescopic component (6) are provided on the sample carrier (25).

2. The continuous casting slab sample inspection device according to claim 1, characterized in that: The left positioning block (13) includes a left locking part (16) and a left body part (17). The left locking part (16) has a C-shaped structure, and the left body part (17) is movably connected to the first rod (11). The right positioning block (14) includes a right locking part (18) and a right body part (19). The right locking part (18) has a C-shaped structure, and the right body part (19) is movably connected to the second rod (12). The left locking part (16) and the right locking part (18) are connected by a spring (15), and the left locking part (16) and the right locking part (18) are arranged symmetrically.

3. The continuous casting slab sample inspection device according to claim 1 or 2, characterized in that: A translational telescopic component (20) is provided between the trough cover (8) and the spray pipe (9).

4. The continuous casting slab sample inspection device according to claim 1 or 2, characterized in that: The spray pipe (9) is connected to one end of the acid inlet pipe (21), and the other end of the acid inlet pipe (21) is connected to the acid storage tank (22). The acid etching tank (7) is connected to the acid storage tank (22) through the acid return pipe (23).

5. The continuous casting slab sample inspection device according to claim 1 or 2, characterized in that: The continuous casting slab sample inspection device also includes a milling cutter, which integrates milling and grinding.

6. The continuous casting slab sample inspection device according to claim 1 or 2, characterized in that: When rough milling the sample (5), the milling cutter for mold steel and high carbon steel uses a depth of cut of 2mm-3mm, and the milling cutter for low carbon steel uses a depth of cut of 3mm-4mm; when finish milling the sample (5), the depth of cut is 0.2mm-0.5mm; the milling cutting speed is divided into three levels: 80-95mm / min for low carbon steel milling cutter, 70-80mm / min for high carbon steel milling cutter, and 60mm / min for mold steel milling cutter; after finish milling, the surface roughness Ra of the sample (5) is ≤0.8μm.

7. The continuous casting slab sample inspection device according to claim 1 or 2, characterized in that: The upper telescopic component (3) is provided in two parts, and the lower telescopic component (4) is provided in six parts.

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