Casting roller surface carbon powder spraying device with intelligent speed control function

Abstract

The invention provides an intelligent speed control casting roller surface carbon powder spraying device. The intelligent speed control casting roller surface carbon powder spraying device comprises a casting and rolling machine line, a reciprocating type flaming carbon powder coating device, a gas fuel mixing device and an operation table. The casting and rolling machine line comprises two casting and rolling housing frames and two casting and rolling rollers; the reciprocating type carbon powder coating device is arranged on the front face of the cast-rolling housing frame and comprises a reciprocating type movement device and a cast-rolling flaming device arranged on the top of the reciprocating type movement device. The gas fuel mixing device is connected with the cast-rolling flaming device and comprises a hydraulic gas tank and a gas mixing chamber connected with the hydraulic gas tank; the operation table is used for controlling operation of the reciprocating type carbon powder coating device through the PCL control system. According to the carbon powder spraying device, the spraying quality is stable and controllable, energy is saved, the production cost and the maintenance difficulty are reduced, full-process automation of carbon powder spraying is ensured, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of casting and rolling process technology, and in particular to a carbon powder spraying device for casting and rolling roll surfaces with intelligent speed control. Background Technology

[0002] In the continuous casting and rolling process of aluminum alloys, aluminum alloy sheets are produced by directly rolling high-temperature molten aluminum using two casting rolls. The high-temperature molten aluminum solidifies under the cooling effect of the casting rolls and possesses high latent heat. At this point, the aluminum alloy sheet is highly viscous, making it extremely easy for it to adhere to the casting rolls under the high casting pressure, causing defects in the cast aluminum alloy sheet. Clearly, to prevent aluminum adhesion during the casting and rolling process, measures need to be taken to separate the casting rolls from the high-temperature aluminum sheet to prevent defects. Currently, the common method is to coat the surface of the casting rolls with a layer of carbon powder as a separating agent. The carbon powder should not be too thick or too thin; if it is too thin, it will not effectively separate the casting rolls from the sheet, resulting in poor performance; if it is too thick, carbon lumps are likely to form, falling onto the sheet surface or entering the aluminum sheet, causing quality problems such as inclusions, black streaks, and black lines.

[0003] The commonly used carbon powder coating method is the flame combustion method. The principle is that when combustibles are not completely burned, some carbon elements remain. When the flame of incomplete combustion is placed under the casting roll, the unburned carbon elements will be deposited on the surface of the casting roll, thereby forming a carbon powder protective layer and realizing the separation of the casting roll from the aluminum plate.

[0004] However, the spraying equipment used in the market is generally complex in design and inconvenient to install, causing problems in actual installation and use. Furthermore, the cast-rolled flamethrower equipment used in the market cannot precisely control the amount of carbon powder sprayed. Most of them use a motor to drive the cast-rolled flamethrower gun in a reciprocating motion, with the speed manually adjusted, primarily by workers based on experience, resulting in significant errors. The final coating effect can only be detected during the final production process, but by then, quality accidents have often occurred, causing irreparable losses. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this invention is to provide an intelligent speed-controlled carbon powder spraying device for casting and rolling rolls, which can achieve stable and controllable spraying quality, save energy, reduce production costs and maintenance difficulty, ensure full automation of carbon powder spraying, and greatly improve production efficiency.

[0006] To achieve the above objectives, the present invention provides the following solution: an intelligent speed-controlled carbon powder spraying device for casting and rolling mills, comprising a casting and rolling mill train, a reciprocating flame-spraying carbon powder coating device disposed on the front of the casting and rolling mill train, a gas fuel mixing device disposed on one side of the casting and rolling mill train, and an operating table;

[0007] The casting and rolling mill includes two casting and rolling frames and two casting and rolling rolls disposed between the casting and rolling frames;

[0008] The reciprocating carbon powder coating device is located on the front of the cast and rolled archway frame. The reciprocating carbon powder coating device includes a reciprocating motion device and a cast and rolled flame device located on top of the reciprocating motion device.

[0009] The gas fuel mixing device is connected to the casting and rolling flame device, and the gas fuel mixing device includes a hydraulic cylinder and a gas mixing chamber connected to the hydraulic cylinder;

[0010] The control panel is used to control the operation of the reciprocating toner coating device using the PCL control system.

[0011] Optionally, the reciprocating motion device includes a main support with a groove structure and a support extension connected to the front of the main support.

[0012] Optionally, the main support includes a concave support cavity, a ball screw disposed at the bottom of the concave support cavity, a drive motor disposed on one side of the concave support cavity, and a trolley track disposed on the upper surface of the concave support cavity.

[0013] The support extension frame includes a U-shaped frame, a strip groove disposed on the upper surface of the U-shaped frame, electromagnetic sensors disposed on both sides of the strip groove, and a U-shaped flexible hose restraint rod disposed on the front side of the U-shaped frame.

[0014] Optionally, the casting and rolling flame-throwing device is movably connected inside the concave support cavity, and the casting and rolling flame-throwing device includes a T-shaped moving carriage and a flame-throwing assembly disposed on the upper surface of the T-shaped moving carriage.

[0015] Optionally, the bottom of the T-shaped moving trolley is provided with a cylindrical through groove adapted to the ball screw, the bottom sides of the T-shaped moving trolley are provided with wheels adapted to the trolley track, and the front of the T-shaped moving trolley is provided with an induction iron plate.

[0016] Optionally, the flame-spraying assembly includes a flame-spraying gun restraint rod disposed on the upper surface of the T-shaped moving trolley, a cast-rolled flame-spraying gun disposed inside the flame-spraying gun restraint rod, a rigid ventilation hose disposed at one end of the cast-rolled flame-spraying gun, and a flame-spraying gun head disposed at the other end of the cast-rolled flame-spraying gun; wherein, the flame-spraying gun restraint rod is provided with a fixing screw for fixing the flame-spraying gun, and the rigid ventilation hose is movably wound around the U-shaped hose restraint rod.

[0017] Optionally, the hydraulic cylinder and the gas mixing chamber are connected by the rigid venting hose. A pneumatic control valve is provided on the rigid venting hose between the hydraulic cylinder and the gas mixing chamber. The hydraulic cylinder consists of a liquefied gas tank and an air tank. The gas mixing chamber is provided with two air inlets and one air outlet.

[0018] Optionally, the control panel includes:

[0019] The data retrieval module is used to acquire the diameter of the casting roll, the rotation speed of the casting roll, and the width of the casting plate in real time to obtain reference data;

[0020] The coating adjustment module is used to control the operation of the T-shaped trolley and the casting and rolling flame gun by means of the drive motor, based on the reference data.

[0021] Optionally, the coating adjustment module includes:

[0022] The coating target unit is used to calculate the carbon powder coating range and carbon powder coating thickness of the T-shaped moving trolley in a single stroke, and to set the upper limit and lower limit of the coating thickness to adjust the liquefied gas flow and gas flow rate of the gas fuel mixing device, thereby completing the control and adjustment of the flame gun.

[0023] A speed control unit is used to calculate the movement speed of the T-shaped moving cart based on the reference data, the toner coating thickness, the upper limit of the coating thickness, and the lower limit of the coating thickness, and then calculate the movement speed according to the following expression:

[0024]

[0025]

[0026] in, For the width of the cast and rolled sheet, The linear velocity of the casting roll. The diameter of the casting roll. for, The effective height of the flame. For a small car, The time of change of the car's speed;

[0027] The motor control unit is used to calculate the rotational speed of the drive motor based on the movement speed, generate a single-journey PCL control command based on the rotational speed, and then use the PCL control command to adjust the drive motor to complete the control and adjustment of the movement speed; the calculation expression for the rotational speed is:

[0028]

[0029] in, This refers to the bearing pitch of the ball screw.

[0030] Optionally, the PCL control commands include:

[0031] The first instruction is used to control the drive motor to start and rotate clockwise;

[0032] The second instruction is used to control the drive motor to rotate clockwise at a constant speed.

[0033] The third instruction is used to control the drive motor to decelerate clockwise.

[0034] The fourth instruction is used to control the drive motor to start and rotate counterclockwise;

[0035] The fifth instruction is used to control the drive motor to rotate counterclockwise at a constant speed;

[0036] The sixth instruction is used to control the drive motor to decelerate counterclockwise.

[0037] The seventh instruction is used to control the drive motor to repeat the first instruction;

[0038] The eighth instruction is used to control the drive motor to repeat the second instruction;

[0039] The ninth instruction is used to cycle through instructions three through eight.

[0040] The tenth instruction is used to determine whether the ninth instruction is interrupted in a loop. If so, the drive motor is controlled to rotate counterclockwise until the T-shaped trolley moves to the other side of the casting and rolling mill and stops running.

[0041] This invention discloses the following technical effects by providing an intelligent speed-controlled carbon powder spraying device for casting and rolling rolls:

[0042] 1. Uniform toner spraying: A reciprocating motion device drives the spray head to move linearly along the guide rail, achieving continuous and uniform spraying onto the roller surface. This ensures even toner coating and overcomes the problems of inconsistent coating thickness and difficulty in controlling thickness associated with manual operation. Furthermore, automated operation improves efficiency, enhances stability, and makes coating quality more easily controllable.

[0043] 2. High film uniformity: By designing a casting and rolling flame device, it can efficiently ignite gaseous fuel and maintain a stable flame, rapidly pyrolyzing and adhering carbon powder to the roller surface, improving the bonding strength between carbon powder and roller surface, reducing carbon powder flying loss, and enhancing coating adhesion.

[0044] 3. Precisely control the mixing ratio of gas and fuel to achieve complete combustion and controllable temperature, thereby improving heating efficiency and safety and ensuring stable operation of the flame-throwing device.

[0045] 4. By configuring an integrated control panel, the parameters of each device can be centrally controlled, which significantly simplifies the operation process, reduces the probability of human error, and facilitates monitoring and maintenance.

[0046] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the device structure provided in an embodiment of the present invention;

[0049] Figure 2 This is a schematic diagram of the reciprocating motion device provided in an embodiment of the present invention;

[0050] Figure 3 This is a schematic diagram of the casting and rolling flame-throwing device provided in an embodiment of the present invention;

[0051] Figure 4 This is a schematic diagram of the structure of a gas fuel mixing device provided in an embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of the automatic toner coating device provided in an embodiment of the present invention.

[0053] Reference numerals: 11. Cast-rolled archway frame; 12. Cast-rolled roll; 2. Reciprocating motion device; 21. Concave support cavity; 22. Ball screw; 23. Drive motor; 24. Trolley track; 25. U-shaped frame; 26. Strip groove; 27. Electromagnetic sensor; 28. U-shaped flexible hose restraint rod; 3. Cast-rolled flame-throwing device; 31. T-shaped moving trolley; 311. Cylindrical through groove; 312. Wheel; 313. Induction iron sheet; 32. Flame-throwing assembly; 321. Flame gun restraint rod; 322. Cast-rolled flame-throwing gun; 323. Air rigid hose; 324. Flame gun head; 4. Operating table; 51. Liquefied gas tank; 52. Air tank; 53. Gas mixing chamber; 54. Pneumatic control valve. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0056] like Figure 1 As shown, the present invention provides a smart speed-controlled carbon powder spraying device for 12 sides of a casting and rolling mill, including a casting and rolling mill line, a reciprocating flame-spraying carbon powder coating device disposed on the front side of the casting and rolling mill line, a gas fuel mixing device disposed on one side of the casting and rolling mill line, and an operating table 4.

[0057] like Figure 1 As shown, the casting and rolling mill includes two casting and rolling frames 11 and two casting and rolling rolls 12 disposed between the casting and rolling frames 11. The reciprocating carbon powder coating device is disposed on the front side of the casting and rolling frames 11, and the reciprocating carbon powder coating device includes a reciprocating motion device 2 and a casting and rolling flame device 3 disposed on the top of the reciprocating motion device 2.

[0058] like Figure 2 As shown, the reciprocating motion device 2 includes a main support with a groove structure and a support extension frame connected to the front of the main support.

[0059] The main support includes a concave support cavity 21, a ball screw 22 disposed at the bottom of the concave support cavity 21, a drive motor 23 disposed on one side of the concave support cavity 21, and a trolley track 24 disposed on the upper surface of the concave support cavity 21. The ball screw 22 is connected to the concave support cavity 21 by a deep groove ball bearing, and the ball screw 22 is connected to the drive motor 23, which drives the ball screw 22 to rotate clockwise and counterclockwise.

[0060] The support extension frame includes a U-shaped frame 25, a strip groove 26 disposed on the upper surface of the U-shaped frame 25, electromagnetic sensors 27 disposed on both sides of the strip groove 26, and a U-shaped flexible hose restraint rod 28 disposed on the front of the U-shaped frame 25. The electromagnetic sensors 27 are connected to the drive motor 23. When current is generated in the electromagnetic sensors 27, a stop signal is transmitted to the drive motor 23, causing the drive to decelerate, stop, and rotate in the opposite direction. Depending on the direction of rotation, the electromagnetic sensors 27 are in an unloaded state and an engaged state. When the trolley moves from the drive side (motor side) to the operating side, the electromagnetic sensors 27 on the drive side are in an unloaded state, and the electromagnetic sensors 27 on the operating side are in an engaged state. When the trolley moves from the operating side to the drive side, the electromagnetic sensors 27 on the operating side are in an unloaded state, and the electromagnetic sensors 27 on the drive side are in an engaged state, thus realizing the reciprocating motion of the trolley. When casting products of different plate widths, it is only necessary to adjust the electromagnetic sensors 27 to be positioned on both sides of the cast plate.

[0061] like Figure 2 , Figure 3 As shown, the casting and rolling flame-spraying device 3 is movably connected inside the concave support cavity 21. The casting and rolling flame-spraying device 3 includes a T-shaped moving carriage 31 and a flame-spraying assembly 32 disposed on the upper surface of the T-shaped moving carriage 31.

[0062] The bottom of the T-shaped trolley 31 is provided with a cylindrical through groove 311 adapted to the ball screw 22. Wheels 312 adapted to the trolley track 24 are provided on both sides of the bottom of the T-shaped trolley 31. An induction iron plate 313 is provided on the front of the T-shaped trolley 31. The cylindrical through groove 311 contains a ball screw circuit and steel balls, and the openings required for the rolling trolley are precisely matched to the ball screw 22.

[0063] The flamethrower assembly 32 includes a flamethrower gun restraint rod 321 disposed on the upper surface of the T-shaped moving trolley 31, a cast-rolled flamethrower gun 322 disposed inside the flamethrower gun restraint rod 321, a rigid ventilation hose 323 disposed at one end of the cast-rolled flamethrower gun 322, and a flamethrower gun head 324 disposed at the other end of the cast-rolled flamethrower gun 322; wherein, the flamethrower gun restraint rod 321 is provided with fixing screws for fixing the flamethrower gun, and the rigid ventilation hose 323 is movably wound around the U-shaped hose restraint rod 28.

[0064] like Figure 4 As shown, the gas fuel mixing device is connected to the casting and rolling flame device 3. The gas fuel mixing device includes a hydraulic cylinder and a gas mixing chamber 53 connected to the hydraulic cylinder.

[0065] The hydraulic cylinder and the gas mixing chamber 53 are connected via a rigid venting hose 323. A pneumatic control valve 54 is installed on the rigid venting hose 323 between the hydraulic cylinder and the gas mixing chamber 53. The hydraulic cylinder consists of a liquefied gas tank 51 and an air tank 52. The gas mixing chamber 53 has two air inlets and one air outlet. After the gas flows out of the hydraulic cylinder, the gas flow rate is controlled by the pneumatic control valve 54. The two gases are fully mixed in the gas mixing chamber 53 and the mixed gas is output through the rigid venting hose 323.

[0066] like Figure 1 , Figure 5 As shown, the operating table 4 is used to control the operation of the reciprocating toner coating device using a PCL control system. The zigzag movement of the trolley causes the toner coating on both sides of the casting roll 12 to intermittently thicken or thin, while the toner coating in the middle of the plate is more uniform. By adjusting the running speed of the reciprocating trolley, after the casting roll 12 has completed one revolution, the trolley applies a thicker layer of toner to the areas with thinner coating in the first revolution during the second revolution, and a thinner layer of toner to the areas with thicker coating. After the casting roll 12 has rotated multiple times, uniform toner coating is achieved across the entire casting plate. The operating table 4 includes:

[0067] The data retrieval module is used to obtain the diameter of the casting roll 12, the rotation speed of the casting roll 12, and the width of the casting plate in real time to obtain reference data.

[0068] A coating adjustment module is used to control the operation of the T-shaped trolley 31 and the casting and rolling torch 322 via the drive motor 23 according to the reference data. The coating adjustment module includes:

[0069] The coating target unit is used to calculate the carbon powder coating range and carbon powder coating thickness of the T-shaped moving trolley 31 during a single stroke, and to set an upper limit and a lower limit for coating thickness, so as to adjust the liquefied gas flow and gas flow rate of the gas fuel mixing device and complete the control and adjustment of the flame gun; in actual operation, the flame size is controlled by increasing and decreasing the gas flow rate, and the amount of carbon powder sprayed is controlled by decreasing or increasing the air flow rate.

[0070] A speed control unit is used to calculate the movement speed of the T-shaped moving cart 31 based on the reference data, the toner coating thickness, the upper limit of the coating thickness, and the lower limit of the coating thickness, and then calculate the movement speed according to the following expression:

[0071]

[0072]

[0073] in, For the width of the cast and rolled sheet, The linear speed of the casting roll 12, For casting rolls with a diameter of 12 mm, for, The effective height of the flame. For a small car, The time of change of the car's speed;

[0074] The motor control unit is used to calculate the rotational speed of the drive motor 23 based on the movement speed, generate a PCL control command for a single-journey distance based on the rotational speed, and then use the PCL control command to adjust the drive motor 23 to complete the control and adjustment of the movement speed; the calculation expression for the rotational speed is:

[0075]

[0076] in, The bearing pitch of ball screw 22 is given, and the rotational speed is measured in rad / s (revolutions per second).

[0077] In a complete casting and rolling process, the central axis of the reciprocating motion device 2 is installed in a position corresponding to the central axis of the casting roll. Let w be the distance traveled by the motion trolley from the drive side to the operating side in one go. d The PCL control commands include:

[0078] The first command is used to control the drive motor 23 to start and rotate clockwise, with the speed ranging from 0 to r, and the running time being t. m ;

[0079] The second instruction is used to control the drive motor 23 to rotate clockwise at a constant speed r, with a running time of [time value missing]. ;

[0080] The third instruction is used to control the drive motor 23 to decelerate clockwise, with the speed decreasing from r to 0, and the running time being t. m ;

[0081] The fourth instruction is used to control the drive motor 23 to start and rotate counterclockwise, with the speed ranging from 0 to r, and the running time t. m ;

[0082] The fifth instruction is used to control the drive motor 23 to rotate counterclockwise at a constant speed r, with a running time of [time value missing]. ;

[0083] The sixth instruction is used to control the drive motor 23 to rotate counterclockwise at a deceleration rate, from r to 0, for a running time of t. m ;

[0084] The seventh instruction is used to control the drive motor 23 to repeat the first instruction, that is, the motor starts and rotates clockwise, with the speed from 0 to r, and the running time t. m ;

[0085] The eighth instruction is used to control the drive motor 23 to repeat the second instruction, that is, the motor rotates clockwise at a constant speed r for a running time. ;

[0086] The ninth instruction is used to cycle through instructions three through eight.

[0087] The tenth instruction is used to determine whether the ninth instruction is interrupted in a loop. If so, the drive motor 23 is controlled to rotate counterclockwise until the T-shaped trolley 31 moves to the other side of the casting and rolling mill and stops running.

[0088] Through the aforementioned PCL control program, automatic speed control of the reciprocating device can be achieved by retrieving and calculating data. During operation, the control program automatically starts from m=1 and attempts until a reasonable m value is found. Furthermore, by monitoring the speed of the casting roll 12, the running speed of the casting trolley can be adjusted in a timely manner.

[0089] Therefore, by providing an intelligent speed-controlled carbon powder spraying device for casting and rolling rolls, this invention can achieve stable and controllable spraying quality, save energy, reduce production costs and maintenance difficulty, ensure full automation of carbon powder spraying, and greatly improve production efficiency.

[0090] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0091] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A smart speed-controlled carbon powder spraying device for casting and rolling mill rolls, characterized in that, It includes a casting and rolling mill, a reciprocating flame-spraying carbon powder coating device located on the front of the casting and rolling mill, and a gas fuel mixing device and an operating platform located on one side of the casting and rolling mill. The casting and rolling mill includes two casting and rolling frames and two casting and rolling rolls disposed between the casting and rolling frames; The reciprocating carbon powder coating device is located on the front of the cast and rolled archway frame. The reciprocating carbon powder coating device includes a reciprocating motion device and a cast and rolled flame device located on top of the reciprocating motion device. The gas fuel mixing device is connected to the casting and rolling flame device, and the gas fuel mixing device includes a hydraulic cylinder and a gas mixing chamber connected to the hydraulic cylinder; The control panel is used to control the operation of the reciprocating toner coating device using the PCL control system.

2. The intelligent speed-controlled carbon powder spraying device for casting and rolling rolls according to claim 1, characterized in that, The reciprocating motion device includes a main support with a groove structure and a support extension frame connected to the front of the main support.

3. The intelligent speed-controlled carbon powder spraying device for casting and rolling rolls according to claim 2, characterized in that: The main support includes a concave support cavity, a ball screw disposed at the bottom of the concave support cavity, a drive motor disposed on one side of the concave support cavity, and a trolley track disposed on the upper surface of the concave support cavity. The support extension frame includes a U-shaped frame, a strip groove disposed on the upper surface of the U-shaped frame, electromagnetic sensors disposed on both sides of the strip groove, and a U-shaped flexible hose restraint rod disposed on the front side of the U-shaped frame.

4. The intelligent speed-controlled carbon powder spraying device for casting and rolling rolls according to claim 3, characterized in that, The casting and rolling flame-spraying device is movably connected inside the concave support cavity. The casting and rolling flame-spraying device includes a T-shaped moving carriage and a flame-spraying assembly disposed on the upper surface of the T-shaped moving carriage.

5. The intelligent speed-controlled carbon powder spraying device for casting and rolling rolls according to claim 4, characterized in that, The bottom of the T-shaped moving trolley is provided with a cylindrical through groove adapted to the ball screw, the bottom sides of the T-shaped moving trolley are provided with wheels adapted to the trolley track, and the front of the T-shaped moving trolley is provided with an induction iron plate.

6. The intelligent speed-controlled carbon powder spraying device for casting and rolling rolls according to claim 5, characterized in that, The flame-spraying assembly includes a flame-spraying gun restraint rod disposed on the upper surface of the T-shaped moving trolley, a cast-rolled flame-spraying gun disposed inside the flame-spraying gun restraint rod, a rigid ventilation hose disposed at one end of the cast-rolled flame-spraying gun, and a flame-spraying gun head disposed at the other end of the cast-rolled flame-spraying gun; wherein, the flame-spraying gun restraint rod is provided with a fixing screw for fixing the flame-spraying gun, and the rigid ventilation hose is movably wrapped around the U-shaped hose restraint rod.

7. The intelligent speed-controlled carbon powder spraying device for casting and rolling mill rolls according to claim 6, characterized in that, The hydraulic cylinder and the gas mixing chamber are connected by the rigid venting hose. A pneumatic control valve is installed on the rigid venting hose between the hydraulic cylinder and the gas mixing chamber. The hydraulic cylinder consists of a liquefied gas tank and an air tank. The gas mixing chamber is provided with two air inlets and one air outlet.

8. The intelligent speed-controlled carbon powder spraying device for casting and rolling rolls according to claim 7, characterized in that, The control panel includes: The data retrieval module is used to acquire the diameter of the casting roll, the rotation speed of the casting roll, and the width of the casting plate in real time to obtain reference data; The coating adjustment module is used to control the operation of the T-shaped trolley and the casting and rolling flame gun by means of the drive motor, based on the reference data.

9. A smart speed-controlled carbon powder spraying device for casting and rolling mill rolls according to claim 8, characterized in that, The coating adjustment module includes: The coating target unit is used to calculate the carbon powder coating range and carbon powder coating thickness of the T-shaped moving trolley in a single stroke, and to set the upper limit and lower limit of the coating thickness to adjust the liquefied gas flow and gas flow rate of the gas fuel mixing device, thereby completing the control and adjustment of the flame gun. A speed control unit is used to calculate the movement speed of the T-shaped moving cart based on the reference data, the toner coating thickness, the upper limit of the coating thickness, and the lower limit of the coating thickness, and then calculate the movement speed according to the following expression: ； ； in, For the width of the cast and rolled sheet, The linear velocity of the casting roll. The diameter of the casting roll. for, The effective height of the flame. For a small car, The time of change of the car's speed; The motor control unit is used to calculate the rotational speed of the drive motor based on the movement speed, generate a single-journey PCL control command based on the rotational speed, and then use the PCL control command to adjust the drive motor to complete the control and adjustment of the movement speed; the calculation expression for the rotational speed is: ； in, This refers to the bearing pitch of the ball screw.

10. A smart speed-controlled carbon powder spraying device for casting and rolling mill surfaces according to claim 9, characterized in that, The PCL control commands include: The first instruction is used to control the drive motor to start and rotate clockwise; The second instruction is used to control the drive motor to rotate clockwise at a constant speed. The third instruction is used to control the drive motor to decelerate clockwise. The fourth instruction is used to control the drive motor to start and rotate counterclockwise; The fifth instruction is used to control the drive motor to rotate counterclockwise at a constant speed; The sixth instruction is used to control the drive motor to decelerate counterclockwise. The seventh instruction is used to control the drive motor to repeat the first instruction; The eighth instruction is used to control the drive motor to repeat the second instruction; The ninth instruction is used to cycle through instructions three through eight. The tenth instruction is used to determine whether the ninth instruction is interrupted in a loop. If so, the drive motor is controlled to rotate counterclockwise until the T-shaped trolley moves to the other side of the casting and rolling mill and stops running.

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