A high manganese steel production device for improving quality of high manganese steel

Abstract

This invention discloses a high-manganese steel production apparatus for improving the quality of high-manganese steel, belonging to the field of steel production technology. The apparatus includes a casting furnace and a casting pipe. A pipe seat that mates with the casting pipe is provided at the casting furnace. The casting pipe is inclined downwards at an angle f. In this high-manganese steel production apparatus, the casting pipe is inclined downwards at an angle of 12°, compared to the previous 15° angle. This shortens the distance between the steel stream and the narrow copper plate of the crystallizer, and places it higher up. The time for the stream to reach the meniscus is shortened, and the steel flow is increased. The stream exiting the nozzle experiences a smaller temperature drop as it flows upwards to the meniscus after hitting the narrow face. This maintains a higher superheat at the meniscus, which is beneficial for promoting the stability of the slag layer, uniform heat transfer, and improving the surface quality of the slab. It also reduces the probability of adhesion and longitudinal cracks.

Description

Technical Field

[0001] This invention belongs to the field of steel production technology, and specifically relates to a high-manganese steel production device for improving the quality of high-manganese steel. Background Technology

[0002] High-manganese steel refers to alloy steel with a manganese content of over 10%. Even after solution treatment, high-manganese steel may still contain a small amount of undissolved carbides; if this amount is low and meets inspection standards, it can still be used. Wear-resistant high-manganese steel is the most widely used type, commonly found in the manufacture of excavator blades, cone crusher face plates and crusher walls, jaw crusher forks, ball mill liners, railway turnouts, hammers, and other components. Under high-energy impact conditions, high-manganese steel and ultra-high-manganese steel castings have a wide range of applications.

[0003] In the continuous casting process of high manganese steel, alarms and shutdowns occurred repeatedly during the initial acceleration of casting, with no obvious adhesion observed at the corresponding slab positions. This seriously affected slab quality and casting safety, and greatly increased the risk of production accidents. Analysis of the causes of these accidents revealed that the excessive inclination angle of the casting pipe led to uneven distribution of solid slag within the raw material during its descent, resulting in lower quality high manganese steel. Therefore, this application proposes a high manganese steel production device to improve the quality of high manganese steel. Summary of the Invention

[0004] The purpose of this invention is to provide a high-manganese steel production apparatus for improving the quality of high-manganese steel, in order to solve the problem mentioned in the background art that, during the casting production of high-manganese steel, the uneven distribution of solid slag inside the raw material during the fall of the casting pipe due to the excessive inclination angle of the casting pipe leads to low quality of the cast high-manganese steel.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-manganese steel production apparatus for improving the quality of high-manganese steel, comprising a casting furnace and a casting pipe, wherein a pipe seat that cooperates with the casting pipe is provided at the casting furnace, and the casting pipe is inclined downward at an angle of f.

[0006] The casting pipe is equipped with a sealing tester, a movable frame for installing the sealing tester, a sleeve assembly that slides with the movable frame, a circumferential moving drive mechanism for driving the sleeve assembly to rotate around the center line of the casting pipe, and a pull plate inserted into the sleeve assembly for giving the sealing tester a force to move towards the side closer to the casting furnace.

[0007] The sleeve assembly is slidably engaged with the movable frame, and the pull-out plate is connected to the movable frame.

[0008] Preferably, the angle of f is 12°.

[0009] Preferably, the pipe seat and the casting pipe are connected by fastening bolts.

[0010] Preferably, the circumferential movement drive mechanism includes a drive motor, a motor bracket for mounting the drive motor, a first gear mounted at the output end of the drive motor, a second gear connected to the first gear via gear meshing, and a rotating disk connected to the second gear and movably cooperating with the pouring pipe.

[0011] Preferably, the sleeve assembly includes a tube body, a square plate mounted on the tube body, and a trapezoidal insert mounted on the square plate, wherein the trapezoidal insert has a slot.

[0012] Preferably, the circumferential moving drive mechanism is provided with a disassembly and assembly mechanism for fixing and loosening the sleeve assembly. The disassembly and assembly mechanism includes an outer frame that slides with the square plate, a baffle installed on one side of the outer frame and having a sliding groove inside, and a locking block that slides with the sliding groove inside the baffle and engages with a locking slot.

[0013] Preferably, a compression spring is provided inside the slide groove.

[0014] Preferably, the locking block is provided with a push-pull rod that slides in conjunction with the slide groove.

[0015] Preferably, the pouring pipe is provided with a horizontal plate connected to the circumferential moving drive mechanism and a residual material push plate connected to the horizontal plate.

[0016] Preferably, the residual material push plate is movably fitted with the horizontal plate, the horizontal plate is provided with a positioning plate, the positioning plate is provided with at least two positioning holes, the positioning plate is movably fitted with the horizontal plate, and the horizontal plate is provided with a positioning rod that fits with the positioning holes.

[0017] Beneficial effects:

[0018] I. This invention provides a high-manganese steel production apparatus for improving the quality of high-manganese steel. The casting pipe is inclined downwards at an angle of 12°, compared to the previous 15° angle. This shortens the distance between the steel stream and the narrow copper plate of the crystallizer, and places it slightly upwards. The time for the stream to reach the meniscus is reduced, and the steel flow is increased. The temperature drop of the stream flowing upwards from the nozzle to the meniscus is smaller. This maintains a higher superheat at the meniscus, which is beneficial for promoting the stability of the slag layer, uniform heat transfer, and improving the surface quality of the slab. It also reduces the probability of adhesion and longitudinal cracks.

[0019] II. The present invention provides a high-manganese steel production device for improving the quality of high-manganese steel. The sealing tester can detect the connection between the pipe seat and the casting furnace to determine whether there is a leak at the connection between the pipe seat and the casting furnace. During the test, the sealing tester and the circumferential moving drive mechanism are started. The circumferential moving drive mechanism drives the sleeve assembly and the sealing tester to rotate around the casting pipe, so as to perform detailed and multi-point detection of the sealing of the connection between the pipe seat and the casting furnace, thereby achieving the purpose of observing the performance of the connection between the pipe seat and the casting furnace. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of one of the high-manganese steel production devices used to improve the quality of high-manganese steel in this invention;

[0021] Figure 2 This is a second schematic diagram of the high-manganese steel production device used to improve the quality of high-manganese steel in this invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A;

[0023] Figure 4 This is the third schematic diagram of the high-manganese steel production device used to improve the quality of high-manganese steel in this invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B;

[0025] Figure 6 This is a schematic diagram of the internal structure of the high-manganese steel production device used to improve the quality of high-manganese steel in this invention;

[0026] Figure 7 For the present invention Figure 6 Sectional view at point DD;

[0027] Figure 8 For the present invention Figure 7 A magnified structural diagram at point C.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Casting furnace; 2. Pipe base; 3. Casting pipe; 4. Fastening bolts;

[0030] 5. Circumferential movement drive mechanism; 501. Drive motor; 502. First gear; 503. Second gear; 504. Rotary disk; 6. Sleeve assembly; 601. Tube body; 602. Square plate; 603. Trapezoidal insert; 604. Slot;

[0031] 7. Sealing tester; 8. Pull-out plate; 9. Connecting plate;

[0032] 10. Disassembly and assembly mechanism; 1001. Outer frame; 1002. Baffle; 1003. Locking block; 1004. Compression spring; 1005. Push-pull rod; 11. Horizontal plate; 12. Excess material push plate; 13. Positioning plate. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0034] Example 1

[0035] like Figure 1-6 As shown, a high-manganese steel production device for improving the quality of high-manganese steel includes a casting furnace 1 and a casting pipe 3. A pipe seat 2 that cooperates with the casting pipe 3 is provided at the casting furnace 1. The casting pipe 3 is inclined downwards at an angle of f.

[0036] A sealing tester 7 is installed at the casting pipe 3, a movable frame for installing the sealing tester 7, a sleeve assembly 6 that slides with the movable frame, a circumferential moving drive mechanism 5 for driving the sleeve assembly 6 to rotate around the center line of the casting pipe 3, and a pull plate 8 inserted into the sleeve assembly 6 and used to give the sealing tester 7 a moving force towards the side closer to the casting furnace 1.

[0037] The sleeve assembly 6 is slidably engaged with the movable frame, and the pull-out plate 8 is connected to the movable frame.

[0038] Example 2

[0039] Based on Embodiment 1, the sleeve assembly 6 includes a tube body 601, a square plate 602 mounted on the tube body 601, and a trapezoidal insert 603 mounted on the square plate 602. The trapezoidal insert 603 is provided with a slot 604. The circumferential movement drive mechanism 5 is provided with a disassembly and assembly mechanism 10 for fixing and loosening the sleeve assembly 6. The disassembly and assembly mechanism 10 includes an outer frame 1001 that slides with the square plate 602, a baffle 1002 mounted on one side of the outer frame 1001 and provided with a sliding groove inside, and a locking block 1003 that slides with the sliding groove in the baffle 1002 and cooperates with the slot 604. A compression spring 1004 is provided in the sliding groove, and a push-pull rod 1005 that slides with the sliding groove is provided at the locking block 1003.

[0040] Example 3

[0041] like Figure 4 , Figure 5As shown, in order to remove excess raw materials around the casting pipe, a high-manganese steel production device for improving the quality of high-manganese steel is proposed. In addition to the features mentioned in Embodiment 1 or Embodiment 2, a horizontal plate 11 connected to the circumferential moving drive mechanism 5 and a residual material push plate 12 connected to the horizontal plate 11 are provided at the casting pipe 3. The residual material push plate 12 is movably engaged with the horizontal plate 11. A positioning plate 13 is provided at the horizontal plate 11. At least two positioning holes are provided in the positioning plate 13. The positioning plate 13 is movably engaged with the horizontal plate 11. A positioning rod that engages with the positioning holes is provided at the horizontal plate 11.

[0042] Example 4

[0043] like Figures 1-8 As shown in the figure, an embodiment of the present invention provides a high manganese steel production device for improving the quality of high manganese steel, including a casting furnace 1 and a casting pipe 3. A pipe seat 2 that cooperates with the casting pipe 3 is provided at the casting furnace 1. The casting pipe 3 is inclined downward at an angle f, and the angle f is 12°.

[0044] The casting pipe 3 is tilted downwards at an angle of 12°, compared to the previous 15° angle. This shortens the distance between the molten steel stream and the narrow copper plate of the crystallizer, and places it higher up. The time it takes for the stream to reach the meniscus is reduced, and the steel flow is increased. The stream exiting the nozzle experiences a smaller temperature drop as it flows upwards to the meniscus after hitting the narrow plate. This maintains a higher superheat at the meniscus, promoting a stable slag layer, uniform heat transfer, and improved slab surface quality. It also reduces the probability of adhesion and longitudinal cracks. In practice, a 12° tilt angle results in a more stable heat flux density at the outlet.

[0045] In practical use, the SEN is loaded into the intermediate ladle, and then the surface temperature of the SEN is baked to the required range. After pouring, the disturbance in the crystallizer is reduced. The raw material flowing in the pouring pipe 3 with a 12° inclined distribution can make the protective slag flow in a small amount evenly and frequently, ensuring slag formation, promoting the stability of the liquid slag layer, and uniform heat transfer, so as to improve the surface quality of the slab and reduce the probability of adhesion and longitudinal cracks.

[0046] It should be noted that lugs are provided at the connection between the casting pipe 3 and the pipe seat 2. The pipe seat 2 and the casting pipe 3 are connected by fastening bolts 4. Specifically, the fastening bolts 4 are screwed into the corresponding lugs.

[0047] The pipe seat 2 and the casting furnace 1 are mostly fixed by welding. Due to factors such as welding process and material life, the sealing performance between the pipe seat 2 and the casting furnace 1 needs to be tested regularly to prevent raw materials from leaking from the gaps between the pipe seat 2 and the casting furnace 1. Therefore, a sealing tester 7, a movable frame for installing the sealing tester 7, a sleeve assembly 6 that slides with the movable frame, a circumferential moving drive mechanism 5 for driving the sleeve assembly 6 to rotate around the center line of the casting pipe 3, and a pull plate 8 inserted into the sleeve assembly 6 to give the sealing tester 7 a moving force towards the side closer to the casting furnace 1.

[0048] The sealing tester 7 can be a common ultrasonic tester, a small flaw detector, or an HLT-C6xx series detector. The sealing tester 7 can test the connection between the pipe seat 2 and the casting furnace 1 to determine whether there is a leak at the connection between the pipe seat 2 and the casting furnace 1. During the test, the sealing tester 7 and the circumferential movement drive mechanism 5 are started. The circumferential movement drive mechanism 5 drives the sleeve assembly 6 and the sealing tester 7 to rotate around the casting pipe 3 (the rotation can be slow or intermittent). The sealing performance of the connection between the pipe seat 2 and the casting furnace 1 is tested in detail and at multiple points, thereby achieving the purpose of observing the performance of the connection between the pipe seat 2 and the casting furnace 1.

[0049] For details, please refer to Figure 2 The circumferential movement drive mechanism 5 includes a drive motor 501, a motor bracket for mounting the drive motor 501, a first gear 502 mounted at the output end of the drive motor 501, a second gear 503 connected to the first gear 502 via gear meshing, and a rotating disk 504 connected to the second gear 503 and movably engaged with the pouring pipe 3. A connecting plate 9 is provided at the rotating disk 504, and a disassembly and assembly mechanism 10 is mounted on the connecting plate 9.

[0050] For details, please refer to Figure 6 The sleeve assembly 6 is slidably fitted with the movable frame, and the pull-out plate 8 is connected to the movable frame. A corresponding high-temperature resistant spring can be installed at the pull-out plate 8, or a commonly used spring can be used. However, it is necessary to allow the casting furnace 1 to come to a complete stop before placing it at the circumferential moving drive mechanism 5. The spring provides a force to move the pull-out plate 8 to one side of the casting furnace 1. The aforementioned spring can be a metal spring with a length of 3cm and a wire diameter of 15mm.

[0051] For more details, please refer to Figure 8The sleeve assembly 6 includes a tube body 601, a square plate 602 mounted on the tube body 601, and a trapezoidal insert 603 mounted on the square plate 602. The trapezoidal insert 603 has a slot 604. The circumferential moving drive mechanism 5 is provided with a disassembly and assembly mechanism 10 for fixing and loosening the sleeve assembly 6. The disassembly and assembly mechanism 10 includes an outer frame 1001 that slides with the square plate 602, a baffle 1002 mounted on one side of the outer frame 1001 and having a sliding groove inside, and a locking block 1003 that slides with the sliding groove in the baffle 1002 and engages with the slot 604.

[0052] It should be noted that a compression spring 1004 is installed inside the slide groove. The compression spring 1004 is a metal spring with a length of 6mm and a wire diameter of 4mm. A push-pull rod 1005 that slides with the slide groove is installed at the locking block 1003.

[0053] In order to clean up the excess material at the outlet of the casting pipe 3, a horizontal plate 11 connected to the circumferential moving drive mechanism 5 and an excess material push plate 12 connected to the horizontal plate 11 are provided at the casting pipe 3. Specifically, the excess material push plate 12 is movably engaged with the horizontal plate 11. A positioning plate 13 is provided at the horizontal plate 11. At least two positioning holes are provided in the positioning plate 13. The positioning plate 13 is movably engaged with the horizontal plate 11. A positioning rod is provided at the horizontal plate 11 to engage with the positioning holes. The excess material push plate 12 has two states: horizontal and vertical. The two positioning holes correspond to the two states of the two excess material push plates 12.

[0054] When the excess material pusher plate 12 is in a vertical position, it adheres to the outer wall of the casting pipe 3. The circumferential moving drive mechanism 5 can drive the rotating disk 504 to rotate, thereby driving the horizontal plate 11 and the excess material pusher plate 12 to rotate, thus pushing away the excess material at the casting pipe 3.

[0055] In summary, this invention provides a high-manganese steel production apparatus for improving the quality of high-manganese steel. The casting pipe 3 is inclined downwards at an angle of 12°, compared to the previous 15° angle. This shortens the distance between the steel stream inside the casting pipe 3 and the narrow copper plate of the crystallizer, and places it slightly upwards. The time for the stream to reach the meniscus is shortened, and the steel flow is increased. The temperature drop of the stream flowing upwards from the nozzle to the meniscus after hitting the narrow surface is smaller. This maintains a higher superheat at the meniscus, which is beneficial for promoting the stability of the slag layer, uniform heat transfer, and improving the surface quality of the slab. It also reduces the probability of adhesion and longitudinal cracks.

[0056] The sealing tester 7 can test the connection between the pipe seat 2 and the casting furnace 1 to determine whether there is a leak at the connection between the pipe seat 2 and the casting furnace 1. During the test, the sealing tester 7 and the circumferential moving drive mechanism 5 are started. The circumferential moving drive mechanism 5 drives the sleeve assembly 6 and the sealing tester 7 to rotate around the casting pipe 3, so as to perform a detailed and multi-point test on the sealing of the connection between the pipe seat 2 and the casting furnace 1, thereby achieving the purpose of observing the performance of the connection between the pipe seat 2 and the casting furnace 1.

[0057] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A high-manganese steel production apparatus for improving the quality of high-manganese steel, comprising a casting furnace (1) and a casting pipe (3), characterized in that, The casting furnace (1) is provided with a pipe seat (2) that cooperates with the casting pipe (3). The casting pipe (3) is inclined downwards at an angle of f. The casting pipe (3) is provided with a sealing tester (7), a movable frame for installing the sealing tester (7), a sleeve assembly (6) that slides with the movable frame, a circumferential moving drive mechanism (5) for driving the sleeve assembly (6) to rotate around the center line of the casting pipe (3), and a pull plate (8) inserted into the sleeve assembly (6) and used to give the sealing tester (7) a moving force towards the side closer to the casting furnace (1). The sleeve assembly (6) is slidably engaged with the movable frame, and the pull-out plate (8) is connected to the movable frame; The angle of f is 12°. The circumferential moving drive mechanism (5) includes a drive motor (501), a motor bracket for mounting the drive motor (501), a first gear (502) mounted at the output end of the drive motor (501), a second gear (503) connected to the first gear (502) through gear meshing transmission, and a rotating disk (504) connected to the second gear (503) and movably cooperating with the pouring pipe (3).

2. The high-manganese steel production apparatus for improving the quality of high-manganese steel as described in claim 1, characterized in that, The pipe seat (2) and the casting pipe (3) are connected by fastening bolts (4).

3. The high-manganese steel production apparatus for improving the quality of high-manganese steel as described in claim 1, characterized in that, The sleeve assembly (6) includes a tube body (601), a square plate (602) mounted on the tube body (601), and a trapezoidal insert (603) mounted on the square plate (602). The trapezoidal insert (603) is provided with a slot (604).

4. The high-manganese steel production apparatus for improving the quality of high-manganese steel as described in claim 3, characterized in that, The circumferential moving drive mechanism (5) is provided with a disassembly and assembly mechanism (10) for fixing and loosening the sleeve assembly (6). The disassembly and assembly mechanism (10) includes an outer frame (1001) that slides with the square plate (602), a baffle (1002) installed on one side of the outer frame (1001) and having a sliding groove inside, and a locking block (1003) that slides with the sliding groove inside the baffle (1002) and engages with the locking slot (604).

5. A high-manganese steel production apparatus for improving the quality of high-manganese steel as described in claim 4, characterized in that, A compression spring (1004) is installed inside the slide.

6. A high-manganese steel production apparatus for improving the quality of high-manganese steel as described in claim 5, characterized in that, The card block (1003) is provided with a push-pull rod (1005) that slides with the slide groove.

7. A high-manganese steel production apparatus for improving the quality of high-manganese steel as described in claim 1, characterized in that, The pouring pipe (3) is provided with a horizontal plate (11) connected to the circumferential moving drive mechanism (5) and a residual material push plate (12) connected to the horizontal plate (11).

8. A high-manganese steel production apparatus for improving the quality of high-manganese steel as described in claim 7, characterized in that, The residual material push plate (12) is movably engaged with the horizontal plate (11). A positioning plate (13) is provided at the horizontal plate (11). At least two positioning holes are provided in the positioning plate (13). The positioning plate (13) is movably engaged with the horizontal plate (11). A positioning rod that engages with the positioning holes is provided at the horizontal plate (11).

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