Tilting wide strip magnesium alloy casting and rolling apparatus

Abstract

The utility model provides a kind of inclined wide magnesium alloy casting and rolling equipment, height adjusting component and horizontal adjusting component are provided in the bottom of casting furnace, casting furnace is transported magnesium alloy solution to front box by magnesium liquid conveying component;Front box is installed between two installation pailou by casting nozzle adjusting component, roll gap control component is set below casting and rolling roller system;Distance measuring component for measuring the relative position of casting nozzle and roll gap is set on casting nozzle adjusting component, distance measuring component feedback distance signal to controller, controller controls casting nozzle adjusting component to adjust casting nozzle and roll gap alignment according to distance signal and roll gap size feedback by roll gap control component, while controller controls height adjusting component and horizontal adjusting component to adjust the position of casting furnace.The utility model can automatically adjust roll gap and adjust the alignment of casting nozzle and roll gap, greatly improve the efficiency and quality of wide magnesium alloy plate strip casting and rolling production.

Description

Technical Field

[0001] This utility model relates to the technical field of metal sheet and strip casting and rolling equipment, and more specifically, to an inclined wide-width magnesium alloy casting and rolling equipment. Background Technology

[0002] China possesses extremely abundant magnesium reserves, ranking among the world's top in proven reserves. Therefore, China's magnesium industry enjoys a unique resource advantage. Magnesium alloys are characterized by low density, high specific strength and stiffness, good vibration damping, excellent electromagnetic shielding performance, and radiation resistance. Magnesium alloy sheet and strip products are mainly used in automobile doors and hoods, body panels, and seat back panels, as well as in laptop casings, showing excellent application prospects and market potential.

[0003] Traditional magnesium alloy strip production relies primarily on ingot casting-rolling technology, which suffers from low efficiency, low automation, poor product consistency, and high production costs. Magnesium alloy casting and rolling is an important emerging technology in the magnesium alloy strip production field, but its development in China is currently lagging. Existing magnesium alloy strip production technologies suffer from the following technical defects: low production efficiency (traditional processes require casting ingots followed by secondary rolling, resulting in a cumbersome process and long production cycles); fixed casting furnaces cannot be dynamically adjusted, leading to time-consuming molten metal transport and alignment with the front box and casting nozzle, resulting in frequent downtime; insufficient automation (adjustments to the casting mill and front box / casting nozzle require manual intervention, making it difficult to adapt to dynamic production needs); inability to precisely align the casting nozzle and casting mill roll gaps; roll gap control relies on mechanical calibration, which cannot be adjusted in real time, resulting in poor strip thickness uniformity; and complex maintenance (fixed system component positions require shutdown for disassembly and assembly, affecting production continuity). Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to provide an inclined wide-width magnesium alloy casting and rolling equipment to solve the problems of low efficiency, low automation, poor product consistency, and high production costs in the current production of wide-width magnesium alloy sheets and strips using the ingot-rolling method. The equipment automatically adjusts the roll gap and the alignment of the casting nozzle with the roll gap online, and the casting furnace automatically moves with the front box. Magnesium molten material delivery is efficient and safe, significantly improving the efficiency and quality of wide-width magnesium alloy sheet and strip casting and rolling production.

[0005] This utility model provides an inclined wide-width magnesium alloy casting and rolling equipment, comprising a casting furnace, a magnesium liquid conveying component, a front box, a casting nozzle, a casting and rolling mill, and a controller arranged sequentially. A height adjustment component and a horizontal adjustment component are provided at the bottom of the casting furnace. The height adjustment component is used to adjust the height of the casting furnace, and the horizontal adjustment component is used to move the casting furnace in the horizontal direction. The casting furnace conveys magnesium alloy solution into the front box through the magnesium liquid conveying component. The casting and rolling mill includes two mounting stands and a casting and rolling roll system installed between the two mounting stands. The front box is installed between the two mounting stands via a casting nozzle adjustment component. The casting nozzle is connected to the discharge port on the lower part of the side wall of the front box facing the casting and rolling roll system. A roll gap control component is provided below the casting and rolling roll system. A distance measuring component is provided on the casting nozzle adjusting component for measuring the relative position of the casting nozzle and the roll gap. The distance measuring component, the roll gap control component, the casting nozzle adjusting component, the height adjusting component, and the level adjusting component are all electrically connected to the controller. The distance measuring component feeds back a distance signal to the controller. The controller controls the casting nozzle adjusting component to adjust the relative position between the casting nozzle and the roll gap according to the process requirements based on the distance signal and the roll gap size fed back by the roll gap control component. At the same time, the controller controls the height adjusting component and the level adjusting component to adjust the position of the casting furnace.

[0006] One optional solution is that the height adjustment component includes lifting rods located at the four corners of the bottom of the casting furnace and shock-absorbing disc springs located between the lifting rods and the bottom of the casting furnace. The horizontal adjustment component includes wheel frames located at the lower part of the two lifting rods on the same side and wheels installed at both ends of the wheel frames. The wheels are mounted on a track, and the track faces the casting and rolling mill. The lifting rods and the wheels are all electrically connected to the controller, which controls the simultaneous lifting and lowering of the four lifting rods and the simultaneous operation of the four wheels.

[0007] One optional embodiment is that the magnesium liquid conveying component includes a magnesium liquid conveying pipe and a magnesium liquid conveying pump. One end of the magnesium liquid conveying pipe is inserted from the top of the casting furnace into the lower part of the casting furnace and connected to the magnesium liquid conveying pump. The other end of the magnesium liquid conveying pipe is connected to the feed inlet of the front box. The front box is higher than the casting furnace. A heating coil is fitted onto the portion of the magnesium liquid conveying pipe located outside the casting furnace, and an insulation layer is wrapped around the heating coil.

[0008] One option is that the front box includes a box body and a crucible disposed in the box body, and the feed inlet is disposed on the lower part of the side wall of the front box away from the casting and rolling roll system. An electric heater is provided between the box and the crucible, and a temperature sensor is provided inside the crucible. Both the electric heater and the temperature sensor are electrically connected to the controller. A contact-type liquid level sensor is installed inside the crucible, and a maximum liquid level sensor is installed at the upper part of the crucible. The contact-type liquid level sensor, the maximum liquid level sensor, and the magnesium liquid delivery pump are all electrically connected to the controller. A rotating motor is provided on the upper part of the front box, and a rocker arm is connected to the rotating motor. The rocker arm extends into the front box, and a plug adapted to the discharge port is connected to the lower end of the rocker arm. The plug faces the discharge port.

[0009] One optional embodiment is that the casting nozzle adjustment component includes a lower support platform fixed between the two mounting brackets, four lifting motors are evenly arranged on the lower support platform, an upper support platform is fixed at the upper end of the four lifting motors, a slide rail facing the casting roll system is provided on the upper support platform, the front box is slidably connected to the slide rail, a push-pull motor is provided on the upper support platform, the push-pull motor is connected to the middle of the lower part of the side wall of the front box away from the casting nozzle, and the push-pull motor and the four lifting motors are all electrically connected to the controller. The ranging component includes a first laser ranging sensor disposed on the lower side of the upper support platform and perpendicularly facing the first base plate between the two mounting arches, and a second laser ranging sensor disposed on the side wall of the front box away from the casting nozzle and perpendicularly facing the second base plate between the two mounting arches. Both the first laser ranging sensor and the second laser ranging sensor are connected to the controller. When the two mounting archways are vertical, the lower support platform and the first base plate are both horizontal, and the second base plate is vertical.

[0010] One option is to install an outer casing on the outer walls of both ends of the casting nozzle, and to install an electric heating element inside the outer casing.

[0011] One optional solution is to provide a pinch roll on the discharge side of the casting and rolling mill, and a thickness gauge on the discharge side of the pinch roll. The roll gap control component includes an AGC cylinder located below the lower roll of the casting and rolling roll system, and the thickness gauge is interlocked with the AGC cylinder.

[0012] One optional embodiment is that the pinch rolls include a pinch roll system and a guide plate platform disposed between the pinch roll system and the discharge side of the casting and rolling mill, the guide plate platform being supported by a hydraulic support rod.

[0013] One possible solution is that the lower edge of the mounting archway is rotatably connected to the support near the end of the front box, a lifting leg is provided below the lower edge of the mounting archway away from the front box, and a hydraulic cylinder is installed on the lower part of the side of the mounting archway near the lifting leg. The upper end of the hydraulic cylinder is rotatably connected to the fixed base fixed on the ground, and the upper end of the telescopic column of the hydraulic cylinder is rotatably connected to the mounting lug on the side of the archway. After the hydraulic cylinder pushes the casting and rolling mill to tilt, the lifting outriggers rise and support the lower part of the mounting archway.

[0014] One optional solution is that the upper and lower rolls of the casting and rolling roll system both include roll sleeves and roll cores fixedly installed in the roll sleeves, and water-cooling pipes are arranged in the roll cores. The water-cooling pipes are connected to the external water-cooling circulation system of the casting and rolling mill through a rotary joint.

[0015] As described above, the inclined wide-width magnesium alloy casting and rolling equipment provided by this invention features a roll gap control component that automatically adjusts the roll gap. After the roll gap is adjusted, the casting nozzle adjustment component adjusts the height of the front box casting nozzle to adapt to the new roll gap. The casting furnace moves along with the front box via height adjustment and level adjustment components to accommodate the feeding of molten magnesium to the front box. This invention can strictly control the roll gap without stopping the machine, automatically align the production centerline, and automatically move the level and height of the casting furnace. This reduces the number of downtimes in traditional magnesium alloy casting and rolling production, ensures production continuity and stability, and significantly improves the efficiency and quality of wide-width magnesium alloy sheet and strip casting and rolling production.

[0016] To achieve the foregoing and related objectives, one or more aspects of the present invention include the features that will be described in detail below and specifically pointed out in the claims. The following description and accompanying drawings illustrate certain exemplary aspects of the present invention. However, these aspects indicate only a few of the various ways in which the principles of the present invention can be used. Furthermore, the present invention is intended to include all such aspects and their equivalents. Attached Figure Description

[0017] Other objects and results of this invention will become more apparent and readily understood upon referring to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings: Figure 1 This is a schematic diagram of the inclined wide-width magnesium alloy casting and rolling equipment according to Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the front box according to Embodiment 1 of the present invention; Figure 3 This is an enlarged view of the front box according to Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the casting nozzle according to Embodiment 1 of the present invention. Figure 5 This is a schematic diagram of a casting and rolling mill according to Embodiment 1 of the present invention; Among them, 1-casting furnace, 11-height adjustment component, 111-lifting rod, 112-shock-absorbing disc spring, 12-level adjustment component, 121-wheel frame, 122-wheel, 123-track; 2-Magnesium liquid conveying component, 21-Magnesium liquid conveying pipe, 22-Magnesium liquid conveying pump, 23-Heating coil, 24-Insulation layer; 3-Front box, 31-Casting nozzle adjustment component, 311-Lower support platform, 312-Lifting motor, 313-Upper support platform, 314-Slide rail, 315-Push-pull motor, 32-Box body, 33-Crucible, 34-Electric heater, 35-Temperature sensor, 36-Contact liquid level sensor, 37-Highest liquid level sensor, 38-Rotation motor, 39-Rocker arm, 391-Plug; 4-Casting nozzle, 41-Range measuring component, 411-First laser rangefinder, 412-Second laser rangefinder, 42-Outer casing, 43-Heating tube, 44-First substrate, 45-Second substrate; 5-Casting and rolling mill, 51-Installation archway, 52-Casting and rolling roll system, 521-Roll sleeve, 522-Roll core, 523-Water cooling pipe, 524-Rotary joint, 53-Roll gap control component, 531-AGC cylinder, 54-Support, 55-Lifting outrigger, 56-Hydraulic cylinder, 57-Fixed seat, 58-Installation ear; 6-Pinching roller, 61-Plate shape measuring component, 62-Thickness gauge, 63-Pinching roller system, 64-Guide plate platform, 65-Hydraulic support rod; 7-Production center plane; 8-Auxiliary discharge roller; a - Casting and rolling mill in inclined state, b - Casting and rolling mill in vertical state.

[0018] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0019] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0020] This invention can be modified in various ways and has various embodiments, with specific embodiments illustrated in the accompanying drawings. However, this invention is not limited to this specific implementation and all modifications, equivalents, and substitutions falling within the spirit and technical scope of this invention are to be understood as included.

[0021] Ordinal terms such as "first," "second," etc., may be used to describe various constituent elements, but the constituent elements are not limited to these terms. The terms are used only to distinguish one constituent element from another. For example, without departing from the scope of the claims of this utility model, a second constituent element may be named a first constituent element, and similarly, a first constituent element may be named a second constituent element. Terms and / or include combinations of multiple associated items or one of multiple associated items.

[0022] It should be understood that when referring to a constituent element being "connected" or "in contact" with other constituent elements, this includes not only cases where it is directly connected or in contact with other constituent elements, but also cases where other constituent elements exist between them. Conversely, when referring to a constituent element being "directly connected" or "directly in contact" with other constituent elements, it should be understood that no other constituent elements exist between them.

[0023] In the description of the embodiments, when it is stated that a certain component is formed "on or under" other components, "on or under" includes both two components that are in direct contact with each other and at least one other component that is configured to be formed between the two components. Furthermore, when expressed as "on or under", based on a certain component, it refers not only to the upper direction but may also include the lower direction.

[0024] The terminology used in this application is for illustrative purposes only and is not intended to limit the scope of the invention. Unless the context clearly specifies otherwise, singular expressions include plural expressions. In this application, terms such as "comprising" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof described in the specification, and do not preclude the presence or additional possibilities of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0025] Unless otherwise defined, including technical or scientific terms, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Terms as defined in commonly used dictionaries should be interpreted in a meaning consistent with their meaning in the context of the relevant art, and should not be construed as having an ideal or overly formal meaning unless explicitly defined in this application.

[0026] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Example 1 like Figure 1 - Figure 5As shown in the figure, the inclined wide-width magnesium alloy casting and rolling equipment proposed in this embodiment can be used for casting and rolling of magnesium alloys with a width of 1200mm or more, and can also be used for casting and rolling of other metal plates.

[0028] This inclined wide-width magnesium alloy casting and rolling equipment includes, in sequence, a casting furnace 1, a magnesium molten material conveying component 2, a front box 3, a casting nozzle 4, a casting and rolling mill 5, an auxiliary discharge roller 8, and a pinch roller 6, as well as a controller. The casting furnace 1 contains the magnesium alloy molten material. The magnesium molten material conveying component 2 conveys the magnesium molten material from the casting furnace 1 into the front box 3. The front box 3 is located on the inlet side of the casting and rolling mill 5 and connected to the casting nozzle 4. The wide-width casting nozzle 4 conveys the magnesium molten material to the casting and rolling roll system 52 of the casting and rolling mill 5. The casting and rolling roll system 52 rolls the magnesium alloy sheet and then conveys it to the pinch roller 6. The left-right centerlines of the casting nozzle 4, the casting and rolling roll system 52, and the pinch roller 6 are fixedly aligned. Because the roll gap of the casting and rolling roll system 52 may change, the vertical production center plane 7 of the casting nozzle 4 and the casting and rolling roll system 52, as well as the distance between the casting nozzle 4 and the vertical center plane of the roll gap, should be adjusted and aligned.

[0029] In this embodiment, the casting and rolling mill 5 includes two mounting brackets 51 and a casting and rolling roll system 52 installed between the two mounting brackets 51. The casting and rolling roll system 52 includes an upper roll and a lower roll. The front box 3 is located on the feed side of the casting and rolling roll system 52, and the casting nozzle 4 is connected to the discharge port on the lower part of the side wall of the front box 3 facing the casting and rolling roll system 52. The molten magnesium in the front box 3 is discharged from the casting nozzle 4 by its own gravity. During casting and rolling operations, the entire casting and rolling mill 5 is adjusted to tilt 15° towards the casting furnace 1 by a tilt adjustment device, effectively preventing the molten magnesium from flowing out randomly.

[0030] Traditional casting furnaces are fixed furnaces. When a fixed furnace is connected to the front box via a molten magnesium conveying device, it is inconvenient to adjust the front box 3 and the casting nozzle 4. In this embodiment, a height adjustment component 11 and a horizontal adjustment component 12 are provided at the bottom of the casting furnace 1. The height adjustment component 11 is used to adjust the height of the casting furnace 1, and the horizontal adjustment component 12 is used to adjust the distance between the casting furnace 1 and the casting mill 5. This allows the casting furnace 1 to adjust accordingly when the front box 3 is repositioned, without affecting the timely online adjustment of the front box 3, and without hindering the casting furnace 1 from conveying molten magnesium into the front box 3 via the molten magnesium conveying component 2.

[0031] To automatically adjust the orientation of the front box 3 and the casting nozzle 4 without stopping the machine, the front box 3 can be installed on the inlet side of the casting mill 5 between the two mounting stands 51 via the casting nozzle adjusting component 31. The front box 3 is mounted on the casting nozzle adjusting component 31, which can adjust the vertical position of the casting nozzle 4 and its distance from the roll gap according to the relative position of the casting nozzle 4 and the center of the casting mill, so that the casting nozzle 4 is aligned with the roll gap. The front box 3, the casting nozzle 4, and the casting nozzle adjusting component 31 are all tilted synchronously with the mounting stands, and the angle is always consistent with the roll gap angle.

[0032] A roll gap control component 53 is installed on the casting roll system 52, and a distance measuring component 41 is installed on the casting nozzle 4. The distance measuring component 41 is used to measure the relative position of the casting nozzle and the roll gap. The distance measuring component 41, the roll gap control component 53, the casting nozzle adjustment component 31, the height adjustment component 11, and the level adjustment component 12 are all electrically connected to the controller. The distance measuring component 41 feeds back its relative distance signal to the controller with respect to the position point on the mounting bracket. The controller controls the casting nozzle adjustment component 31 to adjust the relative position of the casting nozzle and the horizontal / vertical center plane of the roll gap according to the distance signal, the roll gap size fed back by the roll gap control component 53, and the production process requirements, so as to align the casting nozzle with the roll gap. At the same time, the controller controls the adjustment of the height adjustment component 11 and the level adjustment component 12 to adjust the position of the casting furnace so that it follows the displacement of the front box.

[0033] The ranging component 41 obtains the relative position of the casting nozzle 4 and the center of the roll gap casting. The controller calculates and controls the movement of the casting nozzle adjusting component 31 to align the center surface of the casting nozzle 4 with the center surface of the roll gap. Simultaneously, it controls the movement of the height adjusting component 11 and the level adjusting component 12 of the casting furnace 1. The casting nozzle adjusting component 31 is linked with the height adjusting component 11 and the level adjusting component 12 of the casting furnace 1. The casting furnace 1 and the magnesium melt conveying component 2 automatically adapt to the movement of the front box 3, adjusting the alignment of each component on the production line without hindering the casting and rolling operation.

[0034] An auxiliary discharge roller 8 is provided on the discharge side of the casting and rolling roll system 52. The two ends of the auxiliary discharge roller 8 are connected to the edges of the two mounting brackets 51 respectively, and the working surface of the auxiliary discharge roller 8 is aligned with the working center surface of the casting and rolling roll system 52. The auxiliary discharge roller 8 can be a passive water-cooled roller, which assists the magnesium alloy strip in being discharged to the rear pinch roller 6 and cooled.

[0035] A plate shape measuring component 61 is provided on the discharge side of the pinch roll 6. The plate shape measuring component 61 is linked with the roll gap control component 53 to strictly control the roll gap of the casting and rolling roll system 52. The plate shape measuring component 61 can measure the quality of the cast and rolled magnesium plate, thereby providing a signal as to whether the roll gap between the upper and lower rolls of the casting and rolling roll system 52 is appropriate. If it is not appropriate, the roll gap is adjusted by the roll gap control component 53 to achieve closed-loop control of the finished strip thickness and ensure the stable forming quality of wide magnesium alloy strip.

[0036] In one specific embodiment of this utility model, the casting furnace 1 may include a furnace shell and a crucible disposed within the furnace shell. The crucible is made of nickel-free alloy steel to ensure that no other impurities are introduced. A furnace lid covers the upper end of the crucible, and a furnace heater is disposed between the outer wall of the crucible and the inner wall of the furnace shell. The furnace heater can maintain the molten magnesium in the casting furnace 1 at a suitable temperature.

[0037] The height adjustment component 11 includes lifting rods 111 located at the four corners of the bottom of the furnace shell. A shock-absorbing disc spring 112 connects the lifting rods 111 to the bottom of the furnace shell. The shock-absorbing disc spring 112 buffers the vibration of the casting furnace 1 during lifting and lowering, preventing molten magnesium from splashing out due to vibration. The horizontal adjustment component 12 may include wheel frames 121 located at the lower part of the two lifting rods 111 on the same side. Wheels 122 are installed at both ends of the wheel frames 121. The wheels 122 are mounted on a track 123 facing the casting mill 5. The centerline of the track 123 is on the same vertical plane as the centerline of the casting furnace 1 in the left-right direction. The wheels 122 on the track 123 determine the horizontal movement path of the casting furnace 1, allowing the positive-impact casting mill 5 to move forward or backward.

[0038] Both the lifting rods 111 and the wheels 122 are connected to the controller. The controller receives distance information from the ranging component 41 and, after calculation, controls the simultaneous lifting height of the four lifting rods 111 and the simultaneous forward and backward displacement of the four wheels 122. The lifting rods 111 can be electric lifting rods, and the wheels 122 can be electrically controlled wheels.

[0039] In one specific embodiment of this utility model, the magnesium molten material conveying component 2 may include a magnesium molten material conveying pipe 21 and a magnesium molten material conveying pump 22. One end of the magnesium molten material conveying pipe 21 is inserted into the lower part of the casting furnace 1 from the top and connected to the magnesium molten material conveying pump 22. The other end of the magnesium molten material conveying pipe 21 is connected to the inlet of the front box 3, which is higher than the casting furnace 1. The magnesium molten material in the casting furnace 1 is pumped into the magnesium molten material conveying pipe 21 by the magnesium molten material conveying pump 22, and the magnesium molten material enters the front box 3 through the magnesium molten material conveying pipe 21. A heating coil 23 is sleeved on the part of the magnesium molten material conveying pipe 21 located outside the casting furnace 1, and an insulation layer 24 is wrapped around the heating coil 23 to stabilize the temperature of the magnesium molten material during the conveying process and prevent pipe blockage in special circumstances.

[0040] In one specific embodiment of this utility model, the front box 3 may include a box body 32 and a crucible 33 disposed in the box body 32. A box cover is provided on the upper part of the crucible 33. The feed port is located on the lower part of the side wall of the front box 3 away from the casting roll system 52. The magnesium liquid enters from the lower part of the front box 3, which can facilitate the magnesium liquid to flow back to the casting furnace 1 when the magnesium liquid supply is stopped.

[0041] A temperature control component and a liquid level control component are installed inside the crucible 33. The temperature control component includes an electric heater 34 disposed between the chamber 32 and the crucible 33, and a temperature sensor 35 disposed inside the crucible 33. An insulating pad is provided on the inner wall of the chamber 32 for heat preservation. Both the electric heater 34 and the temperature sensor 35 are connected to a controller. When the temperature sensor 35 detects that the temperature of the magnesium liquid inside the chamber 32 is outside the set range, the controller controls the electric heater 34 to heat or stop heating, ensuring that the temperature inside the chamber 32 is stable, with the temperature deviation controlled within ±3℃.

[0042] The liquid level control components include a contact-type liquid level sensor 36 installed inside the crucible 33 and a maximum liquid level sensor 37 installed at the upper part of the crucible 33. The contact-type liquid level sensor 36, the maximum liquid level sensor 37, and the magnesium liquid delivery pump 22 are all connected to the controller. The contact-type liquid level sensor 36 measures the real-time liquid level in the front tank 3 and feeds it back to the controller. The controller then controls the opening, closing, and pumping speed of the magnesium liquid delivery pump 22 to ensure stable liquid supply. When the maximum liquid level sensor 37 detects that the liquid level in the front tank 3 has reached its maximum value, it feeds back to the controller, which then stops the magnesium liquid delivery pump 22 to prevent magnesium liquid from overflowing from the front tank 3.

[0043] In one specific embodiment of this utility model, in order to stop the output of magnesium liquid from the casting nozzle 4 in time when the supply of material to the casting roll system 52 needs to be stopped due to equipment failure or other reasons, a sealing control component for the discharge port is provided in the front box 3 for automatically sealing the discharge port of the front box 3.

[0044] The sealing control component includes a rotating motor 38 located on the upper part of the front box 3. A rocker arm 39 is connected to the rotating motor 38 and extends into the front box 3. A plug 391, adapted to the discharge port, is connected to the lower end of the rocker arm 39, with the plug 391 facing the discharge port. The rocker arm 39 is a rod made of a high-temperature resistant material, and the plug 391 is made of a high-temperature resistant flexible material such as silicon carbide or molybdenum alloy. When a production accident or other situation requires immediate cessation of liquid supply, the rotating motor 38 is controlled to rotate, causing the rocker arm 39 to swing towards the discharge port. The plug 391 blocks the discharge port, preventing the magnesium liquid from being supplied to the casting roll system 52. Simultaneously, the magnesium liquid delivery pump 22 also stops working, and the magnesium liquid in the front box 3 flows back to the casting furnace 1 through the magnesium liquid delivery pipe 21, ensuring production safety. In this embodiment, the discharge port is round, and the plug 391 is cylindrical.

[0045] The rotating motor 38 of the sealing control component can be connected to the controller. When the controller receives a fault signal, it controls the rotating motor 38 to rotate, sealing the discharge port of the front box 3. It can also remotely control the rotation and return of the rotating motor 38.

[0046] In one specific embodiment of this utility model, to facilitate the automatic adjustment of the casting nozzle adjustment component 31, the casting nozzle adjustment component 31 may include a lower support platform 311 fixed between two mounting brackets 51. A lifting motor 312 is provided at each of the four corners of the lower support platform 311. An upper support platform 313 is fixed to the four lifting motors 312. A slide rail 314 facing the casting roll system 52 is provided on the upper support platform 313. The front box 3 is slidably connected to the slide rail 314. A push-pull motor 315 is provided on the upper support platform 313, and the push-pull motor 315 is connected to the side wall of the front box 3 away from the casting nozzle 4. The push-pull motor 315 and the four lifting motors 312 are all connected to a controller.

[0047] The controller controls four lifting motors 312 to lift and lower synchronously, smoothly raising or lowering the upper support platform 313. The front box 3 is mounted on a slide rail 314 on the upper support platform 313, parallel and close to it. After the upper support platform 313 moves the front box 3 up and down to its designated position, the front box 3 is pushed forward or backward by a push-pull motor 315 to ensure the appropriate distance between the casting nozzle 4 and the roll gap. Before the four lifting motors 312 raise and lower, the push-pull motor 315 can retract to pull the casting nozzle 4 away from the roll gap, facilitating the up-and-down adjustment of the casting nozzle 4. Because the lower support platform 311 is fixedly connected to the mounting bracket 51, when the casting mill 5 is vertical, the roll gap, upper and lower support platforms, front box 3, and casting nozzle 4 are all horizontal; when the casting mill 5 is tilted, the angles of the roll gap, upper and lower support platforms, front box 3, and casting nozzle 4 are all consistent.

[0048] The synchronous lifting distance of the four lifting motors 312 should be determined based on the width of the roll gap. When the roll gap changes, and the casting nozzle 4 is no longer in the center of the roll gap, or the distance between the casting nozzle 4 and the roll gap does not conform to the production process, the ranging component 41 feeds back a relative position signal to the controller. The controller calculates and controls the synchronous lifting of the four lifting motors 312 based on the feedback signal and the roll gap width value fed back by the roll gap control component. The controller also automatically matches the built-in production process to control the extension and retraction length of the push-pull motor 315, so that the distance between the casting nozzle 4 and the roll gap is appropriate.

[0049] The ranging component 41 may include a first laser ranging sensor 411 disposed on the lower side of the upper support platform 313 and perpendicularly facing the first substrate 44 between the two mounting arches, and a second laser ranging sensor 412 disposed on the side wall of the front box away from the casting nozzle and perpendicularly facing the second substrate 45 between the two mounting arches. The light from the second laser ranging sensor 412 is parallel to the horizontal center line of the casting nozzle 4. Both the first laser ranging sensor 411 and the second laser ranging sensor 412 are connected to a controller. When the two mounting arches are vertical, the lower support platform 311 and the first substrate 44 are horizontal, and the second substrate 45 is vertical. A hole may be made in the middle of the lower support platform 311 to ensure that the light from the first laser ranging sensor 411 can reach the first substrate disposed between the lower parts of the two mounting arches 51. It must be ensured that the light from both the first laser ranging sensor 411 and the second laser ranging sensor 412 can illuminate the corresponding substrate without any obstruction.

[0050] When the required thickness of the magnesium plate changes as per the production process, the AGC cylinder 531 adjusts the roll gap, and the ranging component 41 measures the change in roll gap. The first laser ranging sensor 411 measures the relative distance between the upper support platform 313 and the first substrate 44. Since the AGC cylinder 531 adjusts the roll gap of the casting roll system 52 based on the first substrate 44 on the mounting bracket 51, and the positions of the upper support platform 313 and the casting nozzle 4 are fixed, a height relationship function between the casting nozzle 4 and the roll gap center can be established. Based on the data measured by the first laser ranging sensor 411 and the roll gap adjustment data of the AGC cylinder 531, the required displacement of the upper support platform 313 is calculated through the height relationship function. Based on the displacement, the controller adjusts the lifting height of the four lifting motors 312 to align the casting nozzle 4 with the roll gap center. The second laser rangefinder 412 measures the relative distance between the front box 3 and the second substrate 45. The relative lateral distance between the casting nozzle 4 and the second laser rangefinder 412 is fixed. Based on the distance between the second substrate 45 and the vertical center line of the casting roll system 52 required by the process, a distance relationship function between the casting nozzle 4 and the vertical center line of the casting roll system 52 can be established. The displacement is obtained by calculating the distance relationship function. Based on the displacement, the push-pull length of the push-pull motor 31 is adjusted by the controller so that the distance between the front end face of the casting nozzle 4 and the vertical center line of the roll gap (the size of the casting zone) meets the requirements.

[0051] Simultaneously, the height adjustment component 11 and the level adjustment component 12 of the casting furnace 1 adjust the position and height of the casting furnace 1 to adapt to the adjustment of the front box. The controller controls the lifting height of the four lifting rods 111 of the height adjustment component 11 by calculation based on the lifting height and tilt angle of the lifting motor 312; the controller controls the moving distance of the four wheels 122 of the level adjustment component 12 by calculation based on the pushing and pulling length and tilt angle of the push and pulling motor 31.

[0052] In one specific embodiment of this utility model, a heat replenishing box is provided on both sides of the casting nozzle 4. The heat replenishing box includes an outer casing 42 respectively disposed on the outer wall of the left and right ends of the casting nozzle 4, and an electric heating tube 43 is disposed inside the outer casing 42. In the prior art, the uniformity of magnesium liquid flow temperature in the wide casting nozzle 4 is poor, and the rapid temperature drop at the two edges along the length of the casting nozzle 4 leads to friction and scratches on the side plates of the casting nozzle 4, resulting in a short service life of the casting nozzle 4. After setting the heat replenishing boxes at both ends of the casting nozzle 4, the electric heating tube 43 is fixed inside the outer casing 42. The heat from the electric heating tube 43 is transferred to the casting nozzle 4 through the outer casing 42, which can prevent the edge temperature from dropping, prevent edge damage to the casting nozzle 4, and improve the service life of the casting nozzle 4. The electric heating tube 43 can be connected to a controller to control the heating of the electric heating tube 43 to keep the heat within a suitable range.

[0053] In one specific embodiment of this utility model, the plate shape measuring component 61 includes a thickness gauge 62 installed on the discharge side of the pinch roll system 63, and the roll gap control component 53 includes an AGC cylinder (Automatic Gauge Control Cylinder) installed below the lower roll of the casting and rolling roll system 52. The AGC cylinder is a high-performance actuator that uses a precision hydraulic system to adjust the roll gap in real time, automatically, and at high speed to ensure that the rolled strip has a uniform thickness. The AGC cylinder 531 is installed at the lower part of the two mounting brackets 51, and the thickness gauge 62 is connected to the AGC cylinder 531. The thickness gauge 62 measures the thickness of the cast and rolled magnesium plate in real time. The data collected by the thickness gauge 62 serves as the main data for roll gap adjustment, and the signal is fed back to the AGC cylinder 531 to push the lower roll to adjust the roll gap size. A plate shape gauge can also be installed on the discharge side of the pinch roll system 63. The data collected by the plate shape gauge is also transmitted to the AGC cylinder 531 to assist in roll gap adjustment. The data collected by the plate shape gauge can also provide a reference for the roll shape design and grinding of the casting and rolling roll system 52. The AGC cylinder 531 dynamically adjusts the roll gap without stopping the machine, thereby ensuring high uniformity and consistency of the thickness of the cast and rolled magnesium plates.

[0054] In one specific embodiment of this utility model, the lower edge of the mounting archway 51, near the end of the front box 3, is rotatably connected to the support 54. A lifting leg 55 is provided below the lower edge of the mounting archway 51 away from the front box 3. A hydraulic cylinder 56 is installed on the lower side of the mounting archway 51 near the lifting leg 55. The upper end of the hydraulic cylinder 56 is rotatably connected to the fixed seat 57 fixed on the ground, and the upper end of the telescopic column of the hydraulic cylinder 56 is rotatably connected to the mounting lug 58 on the side of the mounting archway 51. The hydraulic cylinder 56 pushes the casting and rolling mill 5 to tilt, and the lifting leg 55 rises to support the lower part of the mounting archway 51.

[0055] The support 54 includes a base fixed to the ground, with fixing ears on the base. The mounting bracket 51 is connected to the fixing ears via a rotating shaft. The lifting leg 55 is a vertical hydraulic column. When the casting and rolling mill 5 is not working, it is in the vertical state (b), the hydraulic cylinder 56 is vertical, the lifting leg 55 is not extended, and the casting and rolling mill 5 is vertical. When the casting and rolling mill 5 is working, the hydraulic cylinder 56 tilts while pushing the mounting bracket 51 to rotate around the support 54. After the casting and rolling mill 5 is tilted to a suitable angle, the lifting leg 55 rises and supports below the mounting bracket 51, which is the tilted state (a). The lifting leg 55, support 54, and hydraulic cylinder 56 work together to support and position the casting and rolling mill 5, ensuring stability during the casting and rolling process. The hydraulic cylinder 56 can flexibly adjust the casting and rolling mill 5 to the required angle.

[0056] In one specific embodiment of this utility model, both the upper and lower rolls of the casting and rolling roll system 52 include a roll sleeve 521 and a roll core 522 fixedly disposed within the roll sleeve 521. The two ends of the roll sleeve 521 are rotatably mounted in the holes of the corresponding mounting brackets 51. The central shaft of the roll core 522 is connected to a reducer via a universal joint. The reducer can be a planetary gear reducer, which is connected to a coupling, which is connected to the casting and rolling drive motor. A water-cooling pipe 523 is arranged inside the roll core 522. The port of the water-cooling pipe 523 is connected to a water-cooling circulation system located outside the casting and rolling mill 5 via a rotary joint 524. The inlet and outlet of the water-cooling pipe 523 are respectively connected to the outlet and inlet of the water-cooling circulation system via rotary joints. The water-cooling pipe 523 can cool the wide magnesium alloy strip during the casting and rolling process, ensuring the stability of the wide strip forming.

[0057] The pinch roll 6, located outside the discharge side of the casting and rolling mill 5, includes a pinch roll system 63 and a guide plate platform 64 positioned between the pinch roll system 63 and the discharge side of the casting and rolling mill 5. The guide plate platform 64 is supported by a hydraulic support rod 65, and an air outlet is provided above the pinch roll system 63. The pinch roll 6 provides power and tension for subsequent magnesium alloy strip collection. The guide plate platform 64, supported by the hydraulic support rod 65, assists in connecting the conveying space between the pinch roll 6 and the casting and rolling mill 5. The hydraulic support rod 65 can adjust the height of the guide plate platform 64. Rollers are provided on the upper part of the guide plate platform 64, and the working surface of the rollers is flush with the center surface of the pinch roll system 63. The air outlet can be a V-shaped air outlet. A V-shaped air outlet is a symmetrical groove that gradually narrows and deepens along the length of the roller body, which is machined on the roller surface of the upper and lower rollers. When the upper and lower rollers are closed, their grooves will combine to form a V-shaped channel. The channel is connected to the factory fan through the air duct, so that the magnesium alloy strip maintains a reasonable process temperature during the conveying process. The cooling pinch roller 6 assists in more reasonable temperature control of the production line.

[0058] An upper roll locking cylinder is installed at the upper roll of the casting and rolling roll system 52. The upper roll locking cylinder is installed between the two mounting brackets 51 to lock and fix the upper roll, preventing the upper roll from moving unexpectedly during equipment operation. Axial fixing devices for the upper and lower rolls are installed on the mounting brackets 51 respectively. The axial fixing devices fix the upper / lower rolls axially through adjustable baffles to prevent the rolls from moving along their axial direction during operation.

[0059] The casting and rolling of magnesium alloy sheets and strips using the inclined wide-width magnesium alloy casting and rolling equipment of this embodiment includes the following steps: S1: After the casting and rolling mill 5 is tilted into position, the roll gap of the casting and rolling roll system 52 is adjusted into position by the roll gap control component 53.

[0060] To begin casting and rolling, the vertical casting and rolling mill 5 is first tilted into position. The tilting and raising hydraulic cylinder 56 tilts the casting and rolling mill 5 to an appropriate angle, 15° in this embodiment. Before starting work, the roll gap width of the casting and rolling roll system 52 is adjusted using the roll gap control component 53 to meet the production process requirements.

[0061] S2: The controller controls the casting nozzle adjusting component 31 to adjust the casting nozzle 4 to align with the roll gap based on the distance signal measured by the distance measuring component 41 and the roll gap size fed back by the roll gap control component 53. At the same time, the controller controls the height adjusting component 11 and the level adjusting component 12 to adjust the position of the casting furnace 1.

[0062] The controller adjusts the dimensions of the casting zone in the casting production process via the casting nozzle adjustment component 31 based on the distance signal measured by the ranging component 41. The height and position of the casting furnace 1 are adjusted accordingly by the height adjustment component 11 and the level adjustment component 12.

[0063] S3: The magnesium alloy solution in the casting furnace 1 is sequentially conveyed to the casting roll system 52 through the magnesium liquid conveying component 2, the front box 3, and the casting nozzle 4.

[0064] The casting and rolling process begins. The magnesium alloy solution in the casting furnace 1 is pumped into the magnesium liquid delivery pipe 21 by the magnesium liquid delivery pump 22 and enters the front box 3. The magnesium liquid in the front box 3 enters the casting nozzle 4 by its own gravity. The casting nozzle 4 supplies magnesium liquid to the roll gap of the casting and rolling roll system.

[0065] S4: The casting and rolling roll system 52 casts and rolls the magnesium alloy solution into magnesium alloy strips. The cast and rolled magnesium alloy strips are then conveyed sequentially by the auxiliary discharge roll 8 and the pinch roll 6.

[0066] The casting and rolling mill system 52 rolls out magnesium plates, which are then smoothly conveyed to the pinch roller 6 by the auxiliary discharge roller 8. The pinch roller 6 then pinches and conveys the magnesium plates to the next process.

[0067] The inclined wide-width magnesium alloy casting and rolling equipment according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the inclined wide-width magnesium alloy casting and rolling equipment proposed in the present invention without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. An inclined wide-width magnesium alloy casting and rolling equipment, characterized in that, It includes, in sequence, a casting furnace, a magnesium melt conveying component, a front box, a casting nozzle, a casting and rolling mill, and a controller, among which, A height adjustment component and a horizontal adjustment component are provided at the bottom of the casting furnace. The height adjustment component is used to adjust the height of the casting furnace, and the horizontal adjustment component is used to move the casting furnace in the horizontal direction. The casting furnace conveys magnesium alloy solution into the front box through the magnesium liquid conveying component. The casting and rolling mill includes two mounting stands and a casting and rolling roll system installed between the two mounting stands. The front box is installed between the two mounting stands via a casting nozzle adjustment component. The casting nozzle is connected to the discharge port on the lower part of the side wall of the front box facing the casting and rolling roll system. A roll gap control component is provided below the casting and rolling roll system. A distance measuring component is provided on the casting nozzle adjusting component for measuring the relative position of the casting nozzle and the roll gap. The distance measuring component, the roll gap control component, the casting nozzle adjusting component, the height adjusting component, and the level adjusting component are all electrically connected to the controller. The distance measuring component feeds back a distance signal to the controller. The controller controls the casting nozzle adjusting component to align the casting nozzle with the roll gap based on the distance signal and the roll gap size fed back by the roll gap control component. At the same time, the controller controls the height adjusting component and the level adjusting component to adjust the position of the casting furnace.

2. The inclined wide-width magnesium alloy casting and rolling equipment as described in claim 1, characterized in that, The height adjustment component includes lifting rods located at the four corners of the bottom of the casting furnace and shock-absorbing disc springs located between the lifting rods and the bottom of the casting furnace. The horizontal adjustment component includes wheel frames located at the lower part of the two lifting rods on the same side and wheels installed at both ends of the wheel frames. The wheels are mounted on a track, and the track faces the casting and rolling mill. The lifting rods and the wheels are all electrically connected to the controller, which controls the simultaneous lifting and lowering of the four lifting rods and the simultaneous operation of the four wheels.

3. The inclined wide-width magnesium alloy casting and rolling equipment as described in claim 1, characterized in that, The magnesium liquid conveying component includes a magnesium liquid conveying pipe and a magnesium liquid conveying pump. One end of the magnesium liquid conveying pipe is inserted from the top of the casting furnace into the lower part of the casting furnace and connected to the magnesium liquid conveying pump. The other end of the magnesium liquid conveying pipe is connected to the feed inlet of the front box. The front box is higher than the casting furnace. A heating coil is fitted onto the portion of the magnesium liquid conveying pipe located outside the casting furnace, and an insulation layer is wrapped around the heating coil.

4. The inclined wide-width magnesium alloy casting and rolling equipment as described in claim 3, characterized in that, The front box includes a box body and a crucible disposed in the box body, and the feed inlet is disposed on the lower part of the side wall of the front box away from the casting and rolling roll system; An electric heater is provided between the box and the crucible, and a temperature sensor is provided inside the crucible. Both the electric heater and the temperature sensor are electrically connected to the controller. A contact-type liquid level sensor is installed inside the crucible, and a maximum liquid level sensor is installed at the upper part of the crucible. The contact-type liquid level sensor, the maximum liquid level sensor, and the magnesium liquid delivery pump are all electrically connected to the controller. A rotating motor is provided on the upper part of the front box, and a rocker arm is connected to the rotating motor. The rocker arm extends into the front box, and a plug adapted to the discharge port is connected to the lower end of the rocker arm. The plug faces the discharge port.

5. The inclined wide-width magnesium alloy casting and rolling equipment as described in claim 1, characterized in that, The casting nozzle adjustment component includes a lower support platform fixed between the two mounting arches, four lifting motors evenly arranged on the lower support platform, an upper support platform fixed at the upper end of the four lifting motors, a slide rail facing the casting roll system on the upper support platform, the front box slidably connected to the slide rail, a push-pull motor arranged on the upper support platform, the push-pull motor connected to the lower middle part of the side wall of the front box away from the casting nozzle, and the push-pull motor and the four lifting motors are all electrically connected to the controller. The ranging component includes a first laser ranging sensor disposed on the lower side of the upper support platform and perpendicularly facing the first base plate between the two mounting arches, and a second laser ranging sensor disposed on the side wall of the front box away from the casting nozzle and perpendicularly facing the second base plate between the two mounting arches. Both the first laser ranging sensor and the second laser ranging sensor are connected to the controller. When the two mounting archways are vertical, the lower support platform and the first base plate are both horizontal, and the second base plate is vertical.

6. The inclined wide-width magnesium alloy casting and rolling equipment as described in claim 1, characterized in that, An outer casing is provided on the outer wall of both the left and right ends of the casting nozzle, and an electric heating tube is installed inside the outer casing.

7. The inclined wide-width magnesium alloy casting and rolling equipment as described in claim 1, characterized in that, A pinch roll is provided on the discharge side of the casting and rolling mill, and a thickness gauge is provided on the discharge side of the pinch roll. The roll gap control component includes an AGC cylinder located below the lower roll of the casting and rolling roll system, and the thickness gauge is interlocked with the AGC cylinder.

8. The inclined wide-width magnesium alloy casting and rolling equipment as described in claim 7, characterized in that, The pinch rolls include a pinch roll system and a guide plate platform disposed between the pinch roll system and the discharge side of the casting and rolling mill, the guide plate platform being supported by a hydraulic support rod.

9. The inclined wide-width magnesium alloy casting and rolling equipment as described in claim 1, characterized in that, The lower edge of the mounting archway is rotatably connected to the support near the end of the front box. A lifting support leg is provided below the lower edge of the mounting archway away from the front box. A hydraulic cylinder is installed on the lower side of the mounting archway near the lifting support leg. The upper end of the hydraulic cylinder is rotatably connected to the fixed base fixed on the ground, and the upper end of the telescopic column of the hydraulic cylinder is rotatably connected to the mounting lug on the side of the archway. After the hydraulic cylinder pushes the casting and rolling mill to tilt, the lifting outriggers rise and support the lower part of the mounting archway.

10. The inclined wide-width magnesium alloy casting and rolling equipment as described in claim 1, characterized in that, The upper and lower rolls of the casting and rolling roll system each include a roll sleeve and a roll core fixedly installed inside the roll sleeve. Water cooling pipes are arranged inside the roll core, and the water cooling pipes are connected to the external water cooling circulation system of the casting and rolling mill through a rotary joint.

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