Controllable jet flow corner cleaning molten pool control device and cleaning process

Abstract

The invention discloses a controllable jet flow corner cleaning molten pool control device, and relates to the technical field of metallurgical engineering.The corner cleaning molten pool control device comprises a mounting body, a sliding plate, a moving device, a cleaning oxygen lance device, a first side control lance device and a top control lance device; the cleaning oxygen lance device adjusts a cleaning oxygen lance to a specified angle, the first side control lance device and the top control lance device adjust a control lance to a specified angle, the cleaning oxygen lance is started to melt and remove the corners of the casting blank, and inert gas sprayed by the first side control lance and the top control lance controls liquid steel at the corners of the plate blank. The continuous iron-oxygen reaction for casting blank corner cleaning is achieved, the plate blank corner cleaning range is effectively controlled, meanwhile, the inert gas blocks the iron-oxygen reaction on the edge of a reaction area, the pressure of the inert gas is adjusted according to the pressure of cleaned oxygen, and the problem of burr generation is fundamentally solved.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical engineering, and in particular to a control device for cleaning a molten pool with a controllable jet corner and a cleaning process. Background Art

[0002] Due to the limitation of continuous casting process, cracks, slag inclusions and other defects will inevitably appear at the corners of continuous casting billets. The existing corner cleaning device mainly uses a cleaning oxygen gun to melt the corners of the billet to achieve the purpose of cleaning the corners of the billet.

[0003] Corner cleaning: The molten pool generated by the iron-oxide reaction is located at the corner of the slab. The molten pool will diffuse to the side of the slab due to gravity and oxygen pressure. The molten steel diffused to the upper surface and sides will expand the reaction area, resulting in the inability to effectively melt the corners. The molten pool at the corner of the slab cannot be controlled, resulting in the interruption of the cleaning reaction. The outer boundary of the molten pool reaction zone will form burrs at the edge of the reaction zone because the iron-oxide reaction is not terminated in time.

[0004] The current solution is to limit the high-temperature molten pool to the corners through a mechanical structure. However, due to the limitations of high-temperature resistant materials and the irregular shape of the slab, the mechanical structure is easily damaged, thereby reducing the stability of the molten pool control. At the same time, the fixed shape of the mechanical structure is difficult to adjust accordingly according to the required corner melting range. Summary of the invention

[0005] The object of the present invention is to provide a controllable jet corner cleaning molten pool control device and a cleaning process to solve the problems raised in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: the corner cleaning molten pool control device comprises an installation body, a slide plate is installed on the top of the installation body, a moving device is slidably connected on the top of the slide plate, a first side control gun device is installed on the bottom of the installation body, a top control gun device is installed on one side of the installation body, a cleaning oxygen gun device is installed on one end of the installation body, and the moving device is connected to the control system. During operation, the manual control system controls the mobile device to start, the mobile device drives the slide plate to move in the direction close to the slab, the slide plate drives the installation body to move to a specified position, the cleaning oxygen gun device adjusts the cleaning oxygen gun to a specified angle, the first side control gun device and the top control gun device adjust the control gun to a specified angle, the cleaning oxygen gun starts to melt the corner of the ingot, the inert gas sprayed by the first side control gun and the top control gun blocks the iron-oxygen reaction at the edge of the reaction zone, and the inert gas pressure is adjusted according to the pressure of the cleaning oxygen.

[0007] The first side control gun device comprises a support plate, a first jack is installed above the support plate, one side of the first jack is installed below the installation body, one side of the support plate is connected to a horizontal plate, a first rotating cylinder is installed above the horizontal plate, an L-shaped plate is installed on one side of the first rotating cylinder, a second rotating cylinder is installed on one side of the L-shaped plate, a first side control gun is installed on one side of the second rotating cylinder, the first side control gun is located on one side of the slab, and the first jack, the first rotating cylinder, the second rotating cylinder and the first side control gun are connected to the control system. The first jack is controlled to start, the first jack drives the support plate to move to a specified position, the first rotating cylinder is controlled to start, the cylinder rod of the first rotating cylinder drives the L-shaped plate to rotate, the L-shaped plate drives the second rotating cylinder to rotate, the cylinder rod of the second rotating cylinder drives the first side control gun to rotate to a specified angle in a direction close to the side of the slab, and the second rotating cylinder is controlled to start, the cylinder rod of the second rotating cylinder drives the first side control gun to rotate to a specified angle in a direction close to the upper surface of the slab.

[0008] The top control gun device includes a mounting plate, a second jack is mounted on one side of the mounting plate, a second jack is mounted on one side of the mounting body, a vertical plate is connected to one side of the mounting plate, a third rotating cylinder is mounted on one side of the vertical plate, a right angle plate is mounted on one side of the third rotating cylinder, a fourth rotating cylinder is mounted below the right angle plate, a top control gun is mounted below the fourth rotating cylinder, the top control gun is located above the slab, and the second jack, the third rotating cylinder, the fourth rotating cylinder and the top control gun are connected to the control system. The second jack is controlled to start, the second jack drives the mounting plate to move to a specified position, the third rotating cylinder is controlled to start, the cylinder rod of the third rotating cylinder drives the right angle plate to rotate, the right angle plate drives the fourth rotating cylinder to rotate, the fourth rotating cylinder drives the top control gun to rotate to a specified angle in a direction close to the upper surface of the slab, and the fourth rotating cylinder is controlled to start, the cylinder rod of the fourth rotating cylinder drives the top control gun to rotate to a specified angle in a direction away from the mounting body.

[0009] The cleaning oxygen gun device includes a fixed plate, the fixed plate is installed on one side of the installation body, a well plate is installed on one side of the fixed plate, a rotating plate is installed on one side of the well plate, a scale is set on the rotating plate, a cleaning oxygen gun is rotatably installed between the two rotating plates, an adjustment knob is installed on one side of the cleaning oxygen gun, the adjustment knob is installed on one side of the scale, the cleaning oxygen gun is located at the corner of the slab, and the cleaning oxygen gun is connected to the control system. The adjustment knob is manually twisted, and the adjustment knob drives the cleaning oxygen gun to rotate, and the muzzle of the cleaning oxygen gun is adjusted to a specified angle according to the scale.

[0010] The medium of the first side control gun and the top control gun is an inert gas.

[0011] The gas flows sprayed by the first side control gun and the top control gun are in beam shape.

[0012] A controllable jet corner cleaning molten pool cleaning process, using a controllable jet corner cleaning molten pool control device, the method comprising the following steps:

[0013] S1. Adjust position;

[0014] S2. Adjust the cleaning gun and control the gun angle;

[0015] S3, start cleaning oxygen gun;

[0016] S4, turn on the control gun;

[0017] S5. Adjust the inert gas pressure.

[0018] The S1 comprises the following steps:

[0019] S101, control the moving device to start, and the moving device drives the slide plate to move in the direction close to the slab until the cleaning oxygen gun, the first side control gun and the top control gun reach the designated position;

[0020] The S2 comprises the following steps:

[0021] S201, manually twist the adjustment knob, the adjustment knob drives the cleaning oxygen gun to rotate, and adjusts the muzzle of the cleaning oxygen gun to a specified angle according to the scale;

[0022] S202, control the second jack to start, the second jack drives the mounting plate to move to the specified position, control the third rotating cylinder to start, the cylinder rod of the third rotating cylinder drives the right angle plate to rotate, the right angle plate drives the fourth rotating cylinder to rotate, the fourth rotating cylinder drives the top control gun to rotate to a specified angle in a direction close to the upper surface of the slab, control the fourth rotating cylinder to start, the cylinder rod of the fourth rotating cylinder drives the top control gun to rotate to a specified angle in a direction away from the mounting body;

[0023] S203, control the first jack to start, the first jack drives the support plate to move to the specified position, control the first rotating cylinder to start, the cylinder rod of the first rotating cylinder drives the L-shaped plate to rotate, the L-shaped plate drives the second rotating cylinder to rotate, the cylinder rod of the second rotating cylinder drives the first side control gun to rotate to a specified angle in a direction close to the side surface of the slab, control the second rotating cylinder to start, the cylinder rod of the second rotating cylinder drives the first side control gun to rotate to a specified angle in a direction close to the upper surface of the slab;

[0024] The S3 comprises the following steps:

[0025] S301, control the cleaning oxygen gun to start, melt the corner of the ingot, and form a molten pool due to the iron-oxygen reaction. The formed molten pool continuously melts the corner of the slab as the slab moves;

[0026] The S4 comprises the following steps:

[0027] S401, 0.5 seconds after the oxygen cleaning gun is started, the first side control gun and the top control gun are controlled to start, and the inert gas sprayed from the first side control gun and the top control gun blocks the iron-oxygen reaction at the edge of the reaction zone;

[0028] The S5 comprises the following steps:

[0029] S501. Adjust the pressure of the inert gas in the first side control gun and the top control gun according to the different pressures of the cleaning oxygen in the cleaning oxygen gun.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The present invention successfully achieves a stable and efficient cleaning effect by precisely controlling the corner cleaning molten pool reaction zone, avoiding the problems of incomplete cleaning or uneven effect often faced by traditional technologies when cleaning the molten pool reaction zone, especially the complex corner area, which easily leads to quality defects in subsequent processes, and ensures the stability and consistency of the cleaning process;

[0032] 2. The present invention has the function of adjusting the corner cleaning range as needed, which provides great flexibility for different application scenarios. The cleaning range can be set according to actual needs. It is not only suitable for cleaning corners of various complex geometric shapes, but also can effectively avoid the problem of over-cleaning or under-cleaning, thereby improving work efficiency and cleaning effect, and enhancing the adaptability and practicality of the device;

[0033] 3. The control gun of the present invention effectively shields the edge of the reaction zone by releasing inert gas, successfully blocking the occurrence of iron-oxygen reaction, fundamentally solving the problem of burr generation, and reducing the defect rate in the processing process and subsequent finishing costs;

[0034] 4. The present invention adopts a non-contact molten pool control device design, which does not need to come into direct contact with the casting during operation, thereby effectively avoiding equipment loss problems caused by high temperature, wear or corrosion. This non-contact design significantly extends the service life of the device while ensuring its quality stability in long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The three-dimensional diagram of the molten pool control device for cleaning the corner of the casting billet of the present invention Figure 1 ;

[0036] Figure 2 The three-dimensional diagram of the molten pool control device for cleaning the corner of the casting billet of the present invention Figure 2 ;

[0037] Figure 3 A perspective view of a first side control gun device of the present invention;

[0038] Figure 4 A perspective view of a top control gun device of the present invention;

[0039] Figure 5 It is a three-dimensional diagram of the oxygen lance cleaning device of the present invention.

[0040] In the figure: 1. Installation body; 2. Slide plate; 3. First side control gun device; 31. First jack; 32. Support plate; 33. Horizontal plate; 34. First rotating cylinder; 35. L-shaped plate; 36. Second rotating cylinder; 37. First side control gun; 4. Top control gun device; 41. Second jack; 42. Installation plate; 43. Vertical plate; 44. Third rotating cylinder; 45. Right-angle plate; 46. Fourth rotating cylinder; 47. Top control gun; 5. Oxygen gun cleaning device; 51. Fixed plate; 52. Tic-tac-toe plate; 53. Rotating plate; 54. Oxygen gun cleaning; 55. Scale; 56. Adjustment knob. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example: Figure 1-Figure 5 As shown, the present invention provides a technical solution, the corner cleaning molten pool control device includes an installation body 1, a slide plate 2 is installed above the installation body 1, a moving device is slidably connected above the slide plate 2, a first side control gun device 3 is installed below the installation body 1, a top control gun device 4 is installed on one side of the installation body 1, and a cleaning oxygen gun device 5 is installed at one end of the installation body 1, and the mobile device is connected to the control system. During operation, the manual control system controls the mobile device to start, the mobile device drives the slide plate 2 to move in the direction close to the slab, the slide plate 2 drives the installation body 1 to move to a specified position, the cleaning oxygen gun device 5 adjusts the cleaning oxygen gun 54 to a specified angle, the first side control gun device 3 and the top control gun device 4 adjust the control gun to a specified angle, the cleaning oxygen gun 54 starts to melt the corner of the ingot, the inert gas sprayed by the first side control gun 37 and the top control gun 47 blocks the iron-oxygen reaction at the edge of the reaction zone, and the inert gas pressure is adjusted according to the pressure of the cleaning oxygen.

[0043] The first side control gun device 3 includes a support plate 32, a first jack 31 is installed above the support plate 32, one side of the first jack 31 is installed below the installation body 1, one side of the support plate 32 is connected to a transverse plate 33, a first rotating cylinder 34 is installed above the transverse plate 33, an L-shaped plate 35 is installed on one side of the first rotating cylinder 34, a second rotating cylinder 36 is installed on one side of the L-shaped plate 35, a first side control gun 37 is installed on one side of the second rotating cylinder 36, the first side control gun 37 is located on one side of the slab, and the first jack 31, the first rotating cylinder 34, the second rotating cylinder 36 and the first side control gun 37 are connected to the control system. The first jack 31 is controlled to start, and the first jack 31 drives the support plate 32 to move to the specified position. The first rotating cylinder 34 is controlled to start, and the cylinder rod of the first rotating cylinder 34 drives the L-shaped plate 35 to rotate, and the L-shaped plate 35 drives the second rotating cylinder 36 to rotate, and the cylinder rod of the second rotating cylinder 36 drives the first side control gun 37 to rotate to a specified angle in the direction close to the side surface of the slab. The second rotating cylinder 36 is controlled to start, and the cylinder rod of the second rotating cylinder 36 drives the first side control gun 37 to rotate to a specified angle in the direction close to the upper surface of the slab.

[0044] The top control gun device 4 includes a mounting plate 42, a second jack 41 is installed on one side of the mounting plate 42, one side of the second jack 41 is installed on one side of the mounting body 1, one side of the mounting plate 42 is connected to a vertical plate 43, a third rotating cylinder 44 is installed on one side of the vertical plate 43, a right-angle plate 45 is installed on one side of the third rotating cylinder 44, a fourth rotating cylinder 46 is installed below the right-angle plate 45, a top control gun 47 is installed below the fourth rotating cylinder 46, the top control gun 47 is located above the slab, and the second jack 41, the third rotating cylinder 44, the fourth rotating cylinder 46 and the top control gun 47 are connected to the control system. The second jack 41 is controlled to start, and the second jack 41 drives the mounting plate 42 to move to the specified position. The third rotating cylinder 44 is controlled to start, and the cylinder rod of the third rotating cylinder 44 drives the right-angle plate 45 to rotate, and the right-angle plate 45 drives the fourth rotating cylinder 46 to rotate, and the fourth rotating cylinder 46 drives the top control gun to rotate to a specified angle in a direction close to the upper surface of the slab. The fourth rotating cylinder 46 is controlled to start, and the cylinder rod of the fourth rotating cylinder 46 drives the top control gun 47 to rotate to a specified angle in a direction away from the mounting body 1.

[0045] The cleaning oxygen gun device 5 includes a fixed plate 51, which is installed on one side of the installation body 1, a well plate 52 is installed on one side of the fixed plate 51, a rotating plate 53 is installed on one side of the well plate 52, a scale 55 is set on the rotating plate 53, a cleaning oxygen gun 54 is rotatably installed between the two rotating plates 53, an adjusting knob 56 is installed on one side of the cleaning oxygen gun 54, and the adjusting knob 56 is installed on one side of the scale 55. The cleaning oxygen gun 54 is located at the corner of the slab, the medium of the first side control gun 37 and the top control gun 47 is inert gas, the gas flow sprayed by the first side control gun 37 and the top control gun 47 is in a beam shape, and the cleaning oxygen gun 54 is connected to the control system. The adjusting knob 56 is manually twisted, and the adjusting knob 56 drives the cleaning oxygen gun 54 to rotate, and the muzzle of the cleaning oxygen gun 54 is adjusted to a specified angle according to the scale 55.

[0046] A controllable jet corner cleaning molten pool cleaning process, using a controllable jet corner cleaning molten pool control device, the method comprising the following steps:

[0047] S1. Adjust position;

[0048] S2. Adjust the cleaning gun and control the gun angle;

[0049] S3, start cleaning oxygen gun;

[0050] S4, turn on the control gun;

[0051] S5. Adjust the inert gas pressure.

[0052] The S1 comprises the following steps:

[0053] S101, control the moving device to start, and the moving device drives the slide plate 2 to move in the direction close to the slab until the cleaning oxygen gun 54, the first side control gun 37 and the top control gun 47 reach the designated position;

[0054] The S2 comprises the following steps:

[0055] S201, manually twist the adjustment knob 56, the adjustment knob 56 drives the cleaning oxygen gun 54 to rotate, and adjusts the muzzle of the cleaning oxygen gun 54 to a specified angle according to the scale 55;

[0056] S202, control the second jack 41 to start, the second jack 41 drives the mounting plate 42 to move to the specified position, control the third rotating cylinder 44 to start, the cylinder rod of the third rotating cylinder 44 drives the right-angle plate 45 to rotate, the right-angle plate 45 drives the fourth rotating cylinder 46 to rotate, the fourth rotating cylinder 46 drives the top control gun 47 to rotate to a specified angle in a direction close to the upper surface of the slab, control the fourth rotating cylinder 46 to start, the cylinder rod of the fourth rotating cylinder 46 drives the top control gun 47 to rotate to a specified angle in a direction away from the mounting body 1;

[0057] S203, control the first jack 31 to start, the first jack 31 drives the support plate 32 to move to the specified position, control the first rotating cylinder 34 to start, the cylinder rod of the first rotating cylinder 34 drives the L-shaped plate 35 to rotate, the L-shaped plate 35 drives the second rotating cylinder 36 to rotate, the cylinder rod of the second rotating cylinder 36 drives the first side control gun 37 to rotate to a specified angle in a direction close to the side surface of the slab, control the second rotating cylinder 36 to start, the cylinder rod of the second rotating cylinder 36 drives the first side control gun 37 to rotate to a specified angle in a direction close to the upper surface of the slab;

[0058] The S3 comprises the following steps:

[0059] S301, control the cleaning oxygen gun 54 to start, melt the corner of the ingot, and form a molten pool due to the iron-oxygen reaction. The formed molten pool continuously melts the corner of the ingot as the ingot moves;

[0060] The S4 comprises the following steps:

[0061] S401, 0.5 seconds after the cleaning oxygen gun 54 is started, the first side control gun 37 and the top control gun 47 are controlled to start, and the inert gas sprayed by the first side control gun 37 and the top control gun 47 blocks the iron-oxygen reaction at the edge of the reaction zone;

[0062] The S5 comprises the following steps:

[0063] S501 . Adjust the pressure of the inert gas in the first side control gun 37 and the top control gun 47 according to the different pressures of the cleaning oxygen in the cleaning oxygen gun 54 .

[0064] Working principle of the present invention:

[0065] Taking Baosteel AR3162E1 steel as the cleaning object, the medium of the first side control gun 37 and the top control gun 47 is set to be nitrogen. Using cheap nitrogen as the medium of the control gun greatly reduces the cost of cleaning. The manual control system controls the mobile device to start, and the mobile device drives the slide plate 2 to move in the direction close to the slab. The slide plate 2 drives the installation body 1 to move to the specified position, controls the second jack 41 to start, and the second jack 41 drives the installation plate 42 to move to the specified position, controls the third rotating cylinder 44 to start, and the cylinder rod of the third rotating cylinder 44 drives the right angle plate 45 to rotate, and the right angle plate 45 drives the fourth rotating cylinder 46 to rotate, and the fourth rotating cylinder 46 drives the top control gun 47 to rotate in the direction close to the upper surface of the slab, so that the muzzle of the top control gun 47 is at an angle of 15° with the upper surface of the slab, and controls the fourth rotating cylinder 46 to start, and the cylinder rod of the fourth rotating cylinder 46 drives the top control gun 47 to rotate in the direction away from the installation body 1, so that the muzzle of the top control gun 47 is at an angle of 16° with the side of the slab.

[0066] The first jack 31 is controlled to start, and the first jack 31 drives the support plate 32 to move to the specified position. The first rotating cylinder 34 is controlled to start, and the cylinder rod of the first rotating cylinder 34 drives the L-shaped plate 35 to rotate, and the L-shaped plate 35 drives the second rotating cylinder 36 to rotate, and the cylinder rod of the second rotating cylinder 36 drives the first side control gun 37 to rotate in the direction close to the side of the slab, so that the muzzle of the first side control gun 37 forms an angle of 15° with the side of the slab. The second rotating cylinder 36 is controlled to start, and the cylinder rod of the second rotating cylinder 36 drives the first side control gun 37 to rotate in the direction close to the upper surface of the slab, so that the muzzle of the first side control gun 37 forms an angle of 16° with the upper surface of the slab. The adjusting knob 56 is manually twisted, and the adjusting knob 56 drives the cleaning oxygen gun 54 to rotate, and the muzzle of the cleaning oxygen gun 54 is adjusted to the specified angle according to the scale 55.

[0067] When the spray angles of the cleaning oxygen gun 54, the first side control gun 37 and the top control gun 47 are adjusted, the cleaning oxygen gun 54 is controlled to start to melt the corners of the ingot. A molten pool is formed due to the iron-oxygen reaction, and the formed molten pool continuously melts the corners of the slab as the slab moves. 0.5 seconds after the cleaning oxygen gun 54 is started, the first side control gun 37 and the top control gun 47 are controlled to start to ensure a smooth start of the reaction. The nitrogen sprayed from the first side control gun 37 and the top control gun 47 blocks the iron-oxygen reaction at the edge of the reaction zone, thereby solving the problem of burr formation and controlling the size of the reaction area to obtain the required corner melting range, thereby avoiding the uncontrollable molten pool at the corner of the slab and causing the cleaning reaction to be interrupted.

[0068] The nitrogen pressure in the first side control gun 37 and the top control gun 47 is adjusted as the pressure of the cleaning oxygen in the cleaning oxygen gun 54 is different. When the cleaning oxygen pressure is 0.2Mpa~0.25Mpa, the nitrogen pressure is 1.2MPa~1.35Mpa; when the cleaning oxygen pressure is 0.25~0.3MPa, the nitrogen pressure is 1.35MPa~1.6MPa; when the cleaning oxygen pressure is above 0.3MPa, the nitrogen pressure is above 1.6MPa, thereby avoiding the diffusion of the molten pool due to too little nitrogen and the interference of excessive nitrogen pressure with the normal iron-oxygen reaction.

[0069] By setting the above process parameters, the detection process is shown in Table 1.

[0070] Oxygen pressure / MPa Nitrogen pressure / MPa Upper cleaning width / mm Side cleaning width / mm 0.22 1.3 28 30 0.28 1.4 29 32 0.4 1.7 27 29

[0071] Table 1

[0072] In summary, in this implementation case, under cleaning conditions with different cleaning oxygen pressures, the slab is stably cleaned without generating burrs, and at the same time, the melting range of the corners is stably controlled.

[0073] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A controllable jet corner cleaning molten pool control device, characterized in that: The corner cleaning molten pool control device comprises an installation body (1), a slide plate (2) is installed above the installation body (1), a moving device is slidably connected to the top of the slide plate (2), a first side control gun device (3) is installed below the installation body (1), a top control gun device (4) is installed on one side of the installation body (1), a cleaning oxygen gun device (5) is installed at one end of the installation body (1), and the moving device is connected to a control system.

2. A controllable jet corner cleaning molten pool control device according to claim 1, characterized in that: The first side control gun device (3) comprises a support plate (32), a first jack (31) is installed above the support plate (32), one side of the first jack (31) is installed below the installation body (1), one side of the support plate (32) is connected to a transverse plate (33), a first rotating cylinder (34) is installed above the transverse plate (33), an L-shaped plate (35) is installed on one side of the first rotating cylinder (34), a second rotating cylinder (36) is installed on one side of the L-shaped plate (35), a first side control gun (37) is installed on one side of the second rotating cylinder (36), the first side control gun (37) is located on one side of the slab, and the first jack (31), the first rotating cylinder (34), the second rotating cylinder (36) and the first side control gun (37) are connected to a control system.

3. A controllable jet corner cleaning molten pool control device according to claim 2, characterized in that: The top control gun device (4) comprises a mounting plate (42), a second jack (41) is mounted on one side of the mounting plate (42), a second jack (41) is mounted on one side of the mounting body (1), a vertical plate (43) is connected to one side of the mounting plate (42), a third rotating cylinder (44) is mounted on one side of the vertical plate (43), a right-angle plate (45) is mounted on one side of the third rotating cylinder (44), a fourth rotating cylinder (46) is mounted below the right-angle plate (45), a top control gun (47) is mounted below the fourth rotating cylinder (46), the top control gun (47) is located above the slab, and the second jack (41), the third rotating cylinder (44), the fourth rotating cylinder (46) and the top control gun (47) are connected to a control system.

4. A controllable jet corner cleaning molten pool control device according to claim 3, characterized in that: The cleaning oxygen gun device (5) comprises a fixed plate (51), the fixed plate (51) is installed on one side of the installation body (1), a well plate (52) is installed on one side of the fixed plate (51), a rotating plate (53) is installed on one side of the well plate (52), a scale (55) is provided on the rotating plate (53), a cleaning oxygen gun (54) is rotatably installed between two rotating plates (53), an adjusting knob (56) is installed on one side of the cleaning oxygen gun (54), and the adjusting knob (56) is installed on one side of the scale (55), the cleaning oxygen gun (54) is located at the corner of the slab, and the cleaning oxygen gun (54) is connected to the control system.

5. A controllable jet corner cleaning molten pool control device according to claim 4, characterized in that: The medium of the first side control gun (37) and the top control gun (47) is inert gas.

6. A controllable jet corner cleaning molten pool control device according to claim 5, characterized in that: The gas flows of the first side control gun (37) and the top control gun (47) are in beam shape.

7. A controllable jet corner cleaning molten pool cleaning process, characterized in that: A controllable jet corner cleaning molten pool control device as claimed in any one of claims 1 to 6 is used, and the method comprises the following steps: S1. Adjust position; S2. Adjust the cleaning gun and control the gun angle; S3, start cleaning oxygen gun; S4, turn on the control gun; S5. Adjust the inert gas pressure.

8. A controllable jet corner cleaning molten pool cleaning process according to claim 7, characterized in that: The S1 comprises the following steps: S101, the control moving device is started, and the moving device drives the slide plate (2) to move in a direction close to the slab until the cleaning oxygen gun (54), the first side control gun (37) and the top control gun (47) reach the designated positions; The S2 comprises the following steps: S201, manually twisting the adjusting knob (56), the adjusting knob (56) drives the cleaning oxygen gun (54) to rotate, and adjusting the muzzle of the cleaning oxygen gun (54) to a specified angle according to the scale (55); S202, control the second jack (41) to start, the second jack (41) drives the mounting plate (42) to move to a specified position, control the third rotating cylinder (44) to start, the cylinder rod of the third rotating cylinder (44) drives the right angle plate (45) to rotate, the right angle plate (45) drives the fourth rotating cylinder (46) to rotate, the fourth rotating cylinder (46) drives the top control gun (47) to rotate to a specified angle in a direction close to the upper surface of the slab, control the fourth rotating cylinder (46) to start, the cylinder rod of the fourth rotating cylinder (46) drives the top control gun (47) to rotate to a specified angle in a direction away from the mounting body (1); S203, control the first jack (31) to start, the first jack (31) drives the support plate (32) to move to the specified position, control the first rotating cylinder (34) to start, the cylinder rod of the first rotating cylinder (34) drives the L-shaped plate (35) to rotate, the L-shaped plate (35) drives the second rotating cylinder (36) to rotate, the cylinder rod of the second rotating cylinder (36) drives the first side control gun (37) to rotate to a specified angle in a direction close to the side surface of the slab, control the second rotating cylinder (36) to start, the cylinder rod of the second rotating cylinder (36) drives the first side control gun (37) to rotate to a specified angle in a direction close to the upper surface of the slab; The S3 comprises the following steps: S301, controlling the cleaning oxygen gun (54) to start, melting the corner of the ingot, and forming a molten pool due to the iron-oxygen reaction. The formed molten pool continuously melts the corner of the ingot as the ingot moves; The S4 comprises the following steps: S401, 0.5 seconds after the oxygen cleaning gun (54) is started, the first side control gun (37) and the top control gun (47) are started, and the inert gas sprayed from the first side control gun (37) and the top control gun (47) blocks the iron-oxygen reaction at the edge of the reaction zone; The S5 comprises the following steps: S501. Adjust the pressure of the inert gas in the first side control gun (37) and the top control gun (47) according to the different pressures of the cleaning oxygen in the cleaning oxygen gun (54).

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