Novel quantitative pouring device and method for reducing pipe weight fluctuation

Abstract

The invention discloses a novel quantitative pouring device and method capable of reducing pipe weight fluctuation and relates to the technical field of casting, the novel quantitative pouring device capable of reducing pipe weight fluctuation comprises a supporting frame, two shaft rotating frames are symmetrically arranged at the upper end of the supporting frame, and a bearing platform is rotationally installed between the two shaft rotating frames; a fan-shaped bag is installed in the bearing platform, a hydraulic ejector rod is arranged at the bottom of the bearing platform, and a scum cleaning mechanism used for cleaning an oxide layer on the surface of a metal solution in the fan-shaped bag is arranged at the upper end of the bearing platform. When a metal solution flows out of the drainage nozzle of the fan-shaped ladle, the scum cleaning mechanism can effectively clean residues and an oxide layer on the surface of the metal solution at the position of the drainage nozzle, and the scum cleaning mechanism not only can clean the residues, but also can spray inert gas and guide the inert gas to be blown to the surface of the metal solution at the position of the drainage nozzle, so that a layer of protective film can be formed; the metal solution is prevented from being in contact with air to generate oxidation reaction.

Description

Technical Field

[0001] The present invention relates to the technical field of casting, and particularly relates to a new type of quantitative pouring device and method for reducing the weight fluctuation of pipes. Background Art

[0002] For example, the patent publication number is CN113020553A, and the invention name is a pouring device. The pouring device includes: a ladle for storing molten metal with a nozzle; a tilting mechanism for tilting the ladle so as to maintain the tapping position of the nozzle of the ladle at a specified position; and a radiation thermometer having a sensor head for outputting a signal related to the temperature at the measurement position and an amplifier unit for processing the signal output by the sensor head. The sensor head is arranged such that the measurement position becomes the tapping position and outputs a signal related to the temperature of the molten metal in the molten metal flow at the tapping position.

[0003] When the molten metal in the above-mentioned pouring device comes into contact with oxygen in the air, residues and oxide layers are likely to form on its surface. Even if it is cleaned in time, the molten metal will still come into contact with oxygen again during the pouring process, increasing the risk of defects such as pores and shrinkage porosity on the surface of the casting. Moreover, the molten metal may have poor fluidity or uneven composition during the pouring process, resulting in segregation, affecting the mechanical properties and consistency of the casting. Therefore, the present application provides a new type of quantitative pouring device and method for reducing the weight fluctuation of pipes to meet the requirements. Summary of the Invention

[0004] The purpose of the present application is to provide a new type of quantitative pouring device and method for reducing the weight fluctuation of pipes, which can effectively solve the problems raised in the above-mentioned background art.

[0005] To achieve the above purpose, the present application provides the following technical solution: A new type of quantitative pouring device for reducing the weight fluctuation of pipes, including a support frame. Two shaft rotating frames are symmetrically arranged at the upper end of the support frame. A load-bearing platform is rotatably installed between the two shaft rotating frames. A sector ladle is installed inside the load-bearing platform. A hydraulic jack is arranged at the bottom of the load-bearing platform. A dross cleaning mechanism for cleaning the oxide layer on the surface of the molten metal inside the sector ladle is arranged at the upper end of the load-bearing platform. A pouring runner mechanism for guiding the molten metal for pouring is arranged inside the support frame; The pouring runner mechanism includes a gas protection component for gas protection of the molten metal and a magnetic stirring component for promoting the fluidity and composition uniformity of the molten metal; The dross cleaning mechanism includes a mounting frame installed at the upper end of the load-bearing platform. A guiding member is arranged at the bottom of the mounting frame. The cross-section of the guiding member is in the shape of a water droplet for dividing the oxide layer on the surface of the molten metal.

[0006] Among them, an inert gas channel is provided inside the guiding member. An inert gas pipe communicating with the inside of the inert gas channel is provided on the upper part of the outer surface of the guiding member. One end of the inert gas pipe is connected to an inert gas pipeline. One end of the guiding member is provided with a gas nozzle installed inside the inert gas channel, and air guide holes are provided at the bottom of the gas nozzle.

[0007] Among them, guiding vanes are provided on both sides of the outer surface of the guiding member. Two partition plates are symmetrically provided at the upper end of the sector-shaped package. Inclined plates are provided on the opposite surfaces of the two partition plates. The guiding vanes and the inclined plates cooperate to guide and rest on the surface oxide layer of the molten metal.

[0008] Among them, the gas nozzle is fan-shaped, and the position of the gas nozzle is higher than the surface of the molten metal.

[0009] Among them, the bottoms of the guiding member and the guiding vanes are both in contact with the molten metal, and the included angle between the guiding vane and the guiding member is less than ninety degrees.

[0010] Among them, the gas protection assembly includes a flow channel pipe installed inside the support frame. A pouring pipe is provided at the bottom of the flow channel pipe. A gas pipe is provided on one side of the outer surface of the flow channel pipe. A nozzle is provided at the upper end of the gas pipe, and the nozzle extends into the flow channel pipe in a crescent shape.

[0011] Among them, a connecting pipe is provided at the bottom of the gas pipe. An installation pipe is provided inside the connecting pipe. One end of the pouring pipe is provided with a gas pushing pump. One end of the installation pipe penetrates through the pouring pipe and is connected to the gas pushing pump.

[0012] Among them, a blocking piece for separating the molten metal inside the pouring pipe is provided inside the pouring pipe. An electromagnetic heating element is provided on one side of the blocking piece, and the electromagnetic heating element is located inside the pouring pipe.

[0013] Among them, the magnetic stirring assembly includes an electromagnetic stirrer and a flat convex pipe. The flat convex pipe is installed at one end of the pouring pipe. The electromagnetic stirrer is sleeved outside the flat convex pipe. The cross-section of the flat convex pipe is elliptical, and a convex package is provided in the middle of the flat convex pipe.

[0014] The present invention also provides a new quantitative pouring method for reducing the weight fluctuation of pipes. This method uses a new quantitative pouring device for reducing the weight fluctuation of pipes. The specific pouring method is as follows: S1. During pouring, the rotation and inclination angle of the load-bearing platform are controlled by the quantitative servo device inside the shaft rotating frame. The weighing system inside the load-bearing platform measures the weights of the sector-shaped package and the molten metal. According to the weight of the metal pipe production, the inclination angle of the load-bearing platform is controlled by the cooperation of the shaft rotating frame and the hydraulic ejector rod, so as to ensure that the weight fluctuation of the produced pipe is small. S2. The sector-shaped ladle is tilted so that the molten metal is poured into the internal part of the casting runner mechanism. The slag cleaning mechanism provided will also move along with the inclination of the load-bearing platform. When the molten metal flows out from the drainage nozzle of the sector-shaped ladle, the slag cleaning mechanism will clean the residue and oxide layer on the surface of the molten metal at the position of the drainage nozzle. Moreover, the slag cleaning mechanism will also eject inert gas and guide the inert gas to blow on the surface of the molten metal at the drainage nozzle; S3. After the molten metal is poured into the internal part of the magnetic stirring component through the sector-shaped ladle, the inert gas ejected by the magnetic stirring component fills the cavity where the molten metal is injection-molded. The molten metal guided by the magnetic stirring component will flow into the internal part of the gas protection component. The gas protection component uses the magnetic field to generate a force on the conductive molten metal, promoting the fluidity and compositional uniformity of the molten metal and reducing the segregation phenomenon.

[0015] In summary, the technical effects and advantages of the present invention are as follows: 1. When the molten metal flows out from the drainage nozzle of the sector-shaped ladle in the present invention, the slag cleaning mechanism can effectively clean the residue and oxide layer on the surface of the molten metal at the position of the drainage nozzle. Moreover, the slag cleaning mechanism not only cleans the residue, but also ejects inert gas and guides it to blow on the surface of the molten metal at the drainage nozzle, which can form a protective film to prevent the molten metal from contacting the air and undergoing an oxidation reaction, further ensuring the purity of the molten metal.

[0016] 2. In the present invention, the inert gas such as argon ejected by the magnetic stirring component fills the cavity where the molten metal is injection-molded, forming a protective film to prevent the molten metal from contacting the air and undergoing an oxidation reaction, maintaining the purity of the molten metal, and reducing the casting defects caused by oxide inclusions. By generating a force on the conductive molten metal through the magnetic field, the magnetic stirring component can not only guide the flow of the molten metal, but also promote its uniform distribution in the mold. The shear stress generated during the electromagnetic stirring process helps to break the growing large grains, thereby refining the grain structure. The fine grain structure improves the mechanical properties, such as higher strength and toughness. And the gas protection component uses the magnetic field to generate a force on the conductive molten metal, further promoting the uniform distribution of the internal components of the molten metal, which can reduce the segregation phenomenon and ensure that the chemical compositions of all parts of the finally produced pipeline are consistent.

[0017] 3. In the present invention, the gas protection component continues to provide an inert gas environment to ensure that the molten metal is always under protection throughout the process from pouring to solidification, minimizing the possibility of oxidation and gas absorption. By preventing oxidation, removing impurities, and refining the grain structure, common defects in the casting, such as pores, shrinkage porosity, and inclusions, are reduced, thereby improving the overall quality of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a first perspective three-dimensional structural schematic diagram of the pouring device; Figure 2 It is a second perspective three-dimensional structural schematic diagram of the pouring device; Figure 3 It is a third perspective three-dimensional connection schematic diagram of the pouring device; Figure 4 It is a fourth perspective three-dimensional connection schematic diagram of the pouring device; Figure 5 It is a partial three-dimensional connection structural schematic diagram of the pouring device; Figure 6 It is a three-dimensional connection structural schematic diagram of the sector ladle and the dross cleaning mechanism; Figure 7 It is a three-dimensional connection structural schematic diagram of the dross cleaning mechanism; Figure 8 It is a partial three-dimensional connection structural schematic diagram of the dross cleaning mechanism; Figure 9 It is a three-dimensional connection structural schematic diagram of the guide member; Figure 10 It is a three-dimensional connection structural schematic diagram of the gas nozzle; Figure 11 It is a three-dimensional connection structural schematic diagram of the pouring runner mechanism; Figure 12 It is a three-dimensional connection structural schematic diagram of the magnetic stirring assembly and the gas protection assembly; Figure 13 It is a three-dimensional connection structural schematic diagram of the gas protection assembly; Figure 14 It is a sectional view of the three-dimensional connection structure of the gas protection assembly; Figure 15 It is a sectional view of the three-dimensional connection structure of the gas protection assembly and the magnetic stirring assembly.

[0020] In the figure: 1, support frame; 2, shaft rotating frame; 3, sector ladle; 4, load-bearing platform; 5, dross cleaning mechanism; 51, mounting frame; 52, inert gas pipe; 53, gas nozzle; 54, partition board; 55, inclined plate; 56, guide member; 57, guide vane; 58, inert gas channel; 59, gas guide hole; 6, pouring runner mechanism; 61, magnetic stirring assembly; 611, electromagnetic stirrer; 612, flat convex tube; 62, gas protection assembly; 621, gas push pump; 622, connecting pipe; 623, pouring pipe; 624, runner pipe; 625, nozzle; 626, gas pipe; 627, mounting pipe; 628, electromagnetic heating element; 629, sealing piece; 7, hydraulic jack. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1. Refer to Figures 1 to 15 A novel quantitative pouring device for reducing the weight fluctuation of pipes as shown, including a support frame 1. Two shaft rotating frames 2 are symmetrically arranged at the upper end of the support frame 1. A load-bearing platform 4 is rotatably installed between the two shaft rotating frames 2. A sector ladle 3 is installed inside the load-bearing platform 4. A hydraulic jack 7 is arranged at the bottom of the load-bearing platform 4. A dross cleaning mechanism 5 for cleaning the oxide layer on the surface of the molten metal inside the sector ladle 3 is arranged at the upper end of the load-bearing platform 4. A pouring runner mechanism 6 for guiding the molten metal to be poured is arranged inside the support frame 1; The pouring runner mechanism 6 includes a gas protection assembly 62 for gas protection of the molten metal and a magnetic stirring assembly 61 for promoting the fluidity and composition uniformity of the molten metal; It should be noted that during pouring, the rotation and inclination angle of the load-bearing platform 4 are controlled by the quantitative servo device inside the shaft rotating frame 2. The weighing system inside the load-bearing platform 4 measures the weight of the sector ladle 3 and the molten metal. According to the weight of the metal pipe production, the inclination angle of the load-bearing platform 4 of the load-bearing platform 4 is controlled by the cooperation of the shaft rotating frame 2 and the hydraulic jack 7, so as to ensure that the weight fluctuation of the produced pipe is small; Among them, by adjusting the inclination angle of the load-bearing platform 4 through the quantitative servo device inside the shaft rotating frame 2, the accurate control of the flow rate and amount of the molten metal flowing into the mold can be realized, ensuring the weight consistency of each pouring, thereby reducing the weight fluctuation of the pipe.

[0023] The weighing system inside the load-bearing platform 4 can measure the weights of the sector ladle 3 and the molten metal in real time, and adjust the tilt angle of the platform through the cooperation of the shaft rotating frame 2 and the hydraulic ejector rod 7 according to production requirements to ensure the stable weight of the produced pipes.

[0024] The weighing system stabilizes the pipe weight, with fluctuations within ±1%. The significant reduction in the pipe weight fluctuation can reduce quality risks such as uneven wall thickness, water leakage, and pipe bursting in some pipes with relatively low weights. The reduction of the pipe weight volatility can largely reduce the need to increase the overall pipe weight to meet the qualified wall thickness of lighter pipes, thereby causing an increase in the overweight rate of pipes and waste of raw material costs. The weighing system, through a fixed amount of socket molten metal, a fixed amount of pipe body molten metal, a fixed amount of tailing molten metal, and the integration of the fixed amount weighing system and the turning ladle running speed, dynamically adjusts the turning ladle speed in real time to ensure a constant amount of molten iron poured out per unit time, achieving a constant flow effect.

[0025] The load-bearing platform 4 measures and records the flowing time of the molten metal during pouring according to the fluidity of the molten metal, and then adjusts the main machine running speed in real time according to the change rate of the flowing time, so as to ensure the uniformity of the pipe wall thickness, reduce the quality risk of local thin walls of the pipes, and thus better control the overweight rate of the pipes, reduce waste of resources, and lower costs.

[0026] The inclination of the sector ladle 3 causes the molten metal to pour into the internal part of the pouring runner mechanism 6, and the slag cleaning mechanism 5 provided will also move along with the inclination of the load-bearing platform 4. When the molten metal flows out from the pouring nozzle of the sector ladle 3, the slag cleaning mechanism 5 cleans the residue and oxide layer on the surface of the molten metal at the position of the pouring nozzle, and the slag cleaning mechanism 5 also sprays inert gas and guides the inert gas to blow on the surface of the molten metal at the pouring nozzle; Among them, when the molten metal flows out from the pouring nozzle of the sector ladle 3, the slag cleaning mechanism 5 can effectively clean the residue and oxide layer on the surface of the molten metal at the position of the pouring nozzle. Moreover, the slag cleaning mechanism 5 not only cleans the residue, but also sprays inert gas and guides it to blow on the surface of the molten metal at the pouring nozzle, which can form a protective film to prevent the molten metal from contacting with air and undergoing oxidation reaction, further ensuring the purity of the molten metal.

[0027] After the molten metal is poured into the internal part of the magnetic stirring component 61 through the sector ladle 3, the inert gas ejected by the magnetic stirring component 61 fills the cavity of the molten metal injection. The molten metal guided by the magnetic stirring component 61 will flow into the internal part of the gas protection component 62, and the gas protection component 62 uses the magnetic field to generate a force on the conductive molten metal, promoting the fluidity and compositional uniformity of the molten metal and reducing the segregation phenomenon.

[0028] Among them, the inert gas such as argon ejected by the magnetic stirring component 61 fills the cavity of the metal solution injection molding, forming a protective film to prevent the metal solution from contacting the air and undergoing an oxidation reaction, maintaining the purity of the molten metal, reducing casting defects caused by oxide inclusions. By applying a force to the conductive molten metal through the magnetic field, the magnetic stirring component 61 can not only guide the flow of the molten metal but also promote its uniform distribution within the mold. The shear stress generated during electromagnetic stirring helps to break the growing large grains, thereby refining the grain structure. The fine grain structure improves mechanical properties such as higher strength and toughness.

[0029] Moreover, the gas protection component 62 utilizes the magnetic field to apply a force to the conductive molten metal, further promoting the uniform distribution of the internal components of the molten metal, reducing segregation, and ensuring that the chemical compositions of all parts of the finally produced pipeline are consistent.

[0030] Furthermore, the gas protection component 62 continues to provide an inert gas environment to ensure that the molten metal is always protected throughout the process from pouring to solidification, minimizing the possibility of oxidation and gas absorption. By preventing oxidation, removing impurities, and refining the grain structure, common defects in the casting such as pores, shrinkage porosity, and inclusions are reduced, thereby improving the overall quality of the casting.

[0031] Example 2: Based on the slag cleaning mechanism 5 proposed in Example 1, this example provides a further technical solution for the slag cleaning mechanism 5.

[0032] The slag cleaning mechanism 5 includes a mounting frame 51 installed at the upper end of the load-bearing platform 4. A guiding member 56 is provided at the bottom of the mounting frame 51. The cross-section of the guiding member 56 is in the shape of a water droplet for guiding the oxide layer on the surface of the metal solution.

[0033] An inert gas passage 58 is opened inside the guiding member 56. An inert gas pipe 52 communicating with the inside of the inert gas passage 58 is provided on the upper part of the outer surface of the guiding member 56. One end of the inert gas pipe 52 is connected to an inert gas pipeline. A gas nozzle 53 installed inside the inert gas passage 58 is provided at one end of the guiding member 56. A gas guiding hole 59 is opened at the bottom of the gas nozzle 53.

[0034] It should be noted that after the molten metal inside the sector ladle 3 comes into contact with the guiding member 56, the provided guiding member 56 has a curvature to separate the residue on the surface of the molten metal, guiding the residue on the surface of the molten metal to be diverted to the position of the guiding blade 57. Both the bottom of the guiding member 56 and the guiding blade 57 are in contact with the molten metal, and the angle between the guiding blade 57 and the guiding member 56 is less than ninety degrees, such that the combination of the guiding member 56 and the guiding blade 57 is designed as a swept wing, which can guide the metal residue to disperse to both sides. The provided inclined plate 55 is located on one side of the guiding blade 57, and the guiding blade 57 guides the residue to flow and get stranded inside the inclined plate 55. The provided inclined plate 55 isFigure 8 The shown shape scrapes the residue on the surface of the molten metal.

[0035] Guide vanes 57 are provided on both sides of the outer surface of the guide member 56. Two partition plates 54 are symmetrically arranged at the upper end of the sector ladle 3. Inclined plates 55 are provided on the opposite surfaces of the two partition plates 54. The guide vanes 57 cooperate with the inclined plates 55 to guide and hold the oxide layer on the surface of the molten metal solution.

[0036] The gas nozzle 53 is fan-shaped, and the position of the gas nozzle 53 is higher than the surface of the molten metal.

[0037] It should be noted that when the guide vanes 57 and the inclined plates 55 cooperate to process the residue on the surface of the molten metal solution, the inert gas pipe 52 injects inert gas into the inside of the inert gas passage 58, and the gas is discharged through the gas nozzle 53. The air guide holes 59 assist the gas nozzle 53 to exhaust and blow on the surface of the molten metal. And the gas nozzle 53 is arranged at the diversion nozzle position of the sector ladle 3, so that the surface of the molten metal flowing into the pouring runner mechanism 6 will not be oxidized.

[0038] Among them, the guide member 56 has a specific radian, which can effectively separate the residue on the surface of the molten metal and guide it to the position of the guide vanes 57, separating the dross from the main molten metal flow, reducing the amount of impurities entering the mold. The included angle between the guide member 56 and the guide vanes 57 is less than 90 degrees, forming a structure similar to a "swept wing", which can more efficiently guide the residue on the surface of the molten metal to disperse to both sides, avoiding direct flow into the subsequent processes. The guide vanes 57 further guide the residue to the position of the inclined plates 55 to be stranded, so that the residue is concentrated in a specific area for easy cleaning, improving the residue removal efficiency and reducing the interference with the fluidity of the molten metal.

[0039] Moreover, the inclined plate 55 is in the Figure 8 shown shape, specifically designed to scrape the residue on the surface of the molten metal and collect it in a specific area. The inert gas pipe 52 injects inert gas such as argon into the inside of the inert gas passage 58 and discharges it through the gas nozzle 53, forming a protective film covering the surface of the molten metal to prevent it from contacting with air and undergoing an oxidation reaction. The air guide holes 59 assist the gas nozzle 53 to exhaust, ensuring that the inert gas is evenly distributed on the entire surface of the molten metal, further enhancing the protection effect.

[0040] Embodiment 3: Based on the pouring runner mechanism 6 provided in Embodiment 1, this embodiment provides further technical solutions for the gas protection component 62 and the magnetic stirring component 61.

[0041] The gas protection component 62 includes a flow channel pipe 624 installed inside the support frame 1. A pouring pipe 623 is provided at the bottom of the flow channel pipe 624. A gas pipe 626 is provided on one side of the outer surface of the flow channel pipe 624. A nozzle 625 is provided at the upper end of the gas pipe 626, and the nozzle 625 extends into the interior of the flow channel pipe 624 in a crescent shape.

[0042] A connecting pipe 622 is provided at the bottom of the gas pipe 626. An installation pipe 627 is provided inside the connecting pipe 622. One end of the pouring pipe 623 is provided with a gas push pump 621. One end of the installation pipe 627 penetrates through the pouring pipe 623 and is connected to the gas push pump 621.

[0043] It should be noted that after the molten metal is poured into the interior of the flow channel pipe 624, the gas enters the interior of the installation pipe 627 through the gas push pump 621, and then the gas is sent to the nozzle 625 through the connecting pipe 622 and the gas pipe 626. The provided nozzle 625 extends into the interior of the flow channel pipe 624, and inert gas is injected into the interior of the flow channel pipe 624 through the nozzle 625 to be mixed with the molten metal.

[0044] A blocking piece 629 for separating the molten metal solution inside the pouring pipe 623 is provided inside the pouring pipe 623. An electromagnetic heating element 628 is provided on one side of the blocking piece 629, and the electromagnetic heating element 628 is located inside the pouring pipe 623.

[0045] Among them, the inert gas entering the interior of the pouring pipe 623 through the flow channel pipe 624 is blocked by the blocking piece 629 and guided into the interior of the magnetic stirring component 61, while the electromagnetic heating element 628 provided on one side of the blocking piece 629 heats the interior of the pouring pipe 623, so that the temperature of the molten metal does not drop significantly during the process of entering the magnetic stirring component 61 from the flow channel pipe 624.

[0046] Among them, the gas push pump 621 sends inert gas such as argon into the installation pipe 627, and finally reaches the nozzle 625 through the connecting pipe 622 and the gas pipe 626. The inert gas is directly injected into the interior of the flow channel pipe 624 and mixed with the molten metal, forming a protective film covering the surface of the molten metal, effectively preventing it from contacting the air and undergoing an oxidation reaction.

[0047] During the entire pouring process, the inert gas is continuously supplied to ensure that the molten metal is always under the protection of the inert gas during the process from the flow channel pipe 624 to the pouring pipe 623 and then to the magnetic stirring component 61, minimizing the possibility of oxidation. Moreover, the design of the flow channel pipe 624 enables the molten metal to flow smoothly into the interior of the pouring pipe 623, reducing the possibility of turbulence and splashing, and helping to maintain the uniformity and purity of the molten metal.

[0048] The electromagnetic heating element 628 provided on one side of the plugging piece 629 heats the inside of the pouring pipe 623, ensuring that the temperature of the molten metal does not drop significantly during the process of entering the magnetic stirring assembly 61 from the runner pipe 624, maintaining the fluidity of the molten metal, preventing premature solidification, and being able to preheat the pouring pipe 623 before pouring through the electromagnetic heating element 628.

[0049] The magnetic stirring assembly 61 includes an electromagnetic stirrer 611 and a flat convex pipe 612. The flat convex pipe 612 is installed at one end of the pouring pipe 623, and the electromagnetic stirrer 611 is sleeved outside the flat convex pipe 612. The cross-section of the flat convex pipe 612 is elliptical, and a raised package is provided in the middle of the flat convex pipe 612.

[0050] It should be noted that when the molten metal enters the inside of the flat convex pipe 612 through the pouring pipe 623, the electromagnetic stirrer 611 surrounding the outside of the flat convex pipe 612 can generate a force on the conductive molten metal by using a magnetic field, promoting the fluidity and compositional uniformity of the molten metal, reducing the segregation phenomenon. The provided flat convex pipe 612 is designed in an elliptical tube shape, and a raised package is provided in the middle of the flat convex pipe 612, which can make the molten metal move violently inside the flat convex pipe 612 without affecting the subsequent pouring, and will not affect the normal pouring flow of the molten metal injected from the runner pipe 624 into the inside of the pouring pipe 623.

[0051] Among them, the electromagnetic stirrer 611 generates a force on the conductive molten metal by using a magnetic field, prompting the molten metal to move violently inside the flat convex pipe 612, ensuring its full mixing and uniform distribution. The violent movement of the molten metal breaks the local stagnant areas in the molten metal, preventing non-uniform flow caused by gravity or temperature differences.

[0052] Moreover, electromagnetic stirring can make alloying elements with different densities or solubilities more evenly distributed throughout the melt, thereby reducing center segregation and other non-uniform phenomena, because compositional non-uniformity may lead to a decline in mechanical properties.

[0053] And the flat convex pipe 612 is designed in an elliptical tube shape, and a raised package is provided in the middle, increasing the complexity of the flow path of the molten metal in the pipe, further enhancing the stirring effect. The raised package can guide the molten metal to form a more complex flow pattern, promoting more thorough mixing. Although a raised package is provided in the middle to increase the stirring effect, through the effective combination of electromagnetic stirring and special pipe design, the segregation phenomenon in the molten metal and other defects caused by compositional non-uniformity, such as gas holes and shrinkage porosity, are significantly reduced, improving the quality of the final casting.

[0054] The present invention also provides a new quantitative pouring method for reducing the weight fluctuation of the pipe. The specific pouring method is as follows: S1. During pouring, the rotation and inclination angle of the load-bearing platform 4 is controlled by the quantitative servo device inside the shaft rotating frame 2. The weighing system inside the load-bearing platform 4 measures the weights of the sector ladle 3 and the molten metal. According to the weight of the metal pipe production, the inclination angle of the load-bearing platform 4 is controlled by the cooperation of the shaft rotating frame 2 and the hydraulic ejector rod 7, so as to ensure that the weight fluctuation of the produced pipe is small. S2. The inclination of the sector ladle 3 causes the molten metal to pour into the internal of the pouring runner mechanism 6, and the slag cleaning mechanism 5 provided will also move along with the inclination of the load-bearing platform 4. When the molten metal flows out from the drainage nozzle of the sector ladle 3, the slag cleaning mechanism 5 will clean the residue and oxide layer on the surface of the molten metal at the position of the drainage nozzle, and the slag cleaning mechanism 5 will also eject inert gas and guide the inert gas to blow on the surface of the molten metal at the drainage nozzle. S3. After the molten metal is poured into the internal of the magnetic stirring component 61 through the sector ladle 3, the inert gas ejected by the magnetic stirring component 61 fills the cavity of the molten metal injection. The molten metal guided by the magnetic stirring component 61 will flow into the internal of the gas protection component 62, and the gas protection component 62 uses the magnetic field to generate a force on the conductive molten metal, promoting the fluidity and compositional uniformity of the molten metal and reducing the segregation phenomenon. Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A new type of quantitative pouring device for reducing the fluctuation of pipe weight, including a support frame (1), and two shaft rotating frames (2) are symmetrically arranged at the upper end of the support frame (1), and it is characterized in that: A load-bearing platform (4) is rotatably installed between the two shaft turntables (2). A sector ladle (3) is installed inside the load-bearing platform (4). A hydraulic jack (7) is provided at the bottom of the load-bearing platform (4). A dross cleaning mechanism (5) for cleaning the oxide layer on the surface of the molten metal inside the sector ladle (3) is provided at the upper end of the load-bearing platform (4). A pouring runner mechanism (6) for guiding the molten metal to be poured is provided inside the support frame (1). The pouring runner mechanism (6) includes a gas protection component (62) for gas protection of the molten metal and a magnetic stirring component (61) for promoting the fluidity and compositional uniformity of the molten metal. The dross cleaning mechanism (5) includes a mounting frame (51) installed at the upper end of the load-bearing platform (4). A guiding member (56) is provided at the bottom of the mounting frame (51). The cross-section of the guiding member (56) is in the shape of a water droplet for dividing the oxide layer on the surface of the molten metal.

2. A novel quantitative pouring device for reducing the fluctuation of pipe weight according to claim 1, characterized in that: An inert gas passage (58) is opened inside the guiding member (56). An inert gas pipe (52) communicating with the inside of the inert gas passage (58) is provided on the upper part of the outer surface of the guiding member (56). One end of the inert gas pipe (52) is connected to an inert gas pipeline. A gas nozzle (53) installed inside the inert gas passage (58) is provided at one end of the guiding member (56). A gas guiding hole (59) is opened at the bottom of the gas nozzle (53).

3. A novel quantitative pouring device for reducing the fluctuation of pipe weight according to claim 2, characterized in that: Guiding vanes (57) are provided on both sides of the outer surface of the guiding member (56). Two partition plates (54) are symmetrically provided at the upper end of the sector ladle (3). Inclined plates (55) are provided on the opposite surfaces of the two partition plates (54). The guiding vanes (57) cooperate with the inclined plates (55) to guide and hold the oxide layer on the surface of the molten metal.

4. A novel quantitative pouring device for reducing the weight fluctuation of pipes, characterized in that: The gas nozzle (53) is in a fan shape, and the position of the gas nozzle (53) is higher than the surface of the molten metal.

5. A novel quantitative pouring device for reducing the weight fluctuation of pipes, characterized in that: The bottom of the guiding member (56) and the guiding vanes (57) both contact the molten metal, and the angle between the guiding vanes (57) and the guiding member (56) is less than ninety degrees.

6. A novel quantitative pouring device for reducing the weight fluctuation of pipes, characterized in that: The gas protection component (62) includes a runner pipe (624) installed inside the support frame (1). A pouring pipe (623) is provided at the bottom of the runner pipe (624). A gas pipe (626) is provided on one side of the outer surface of the runner pipe (624). A nozzle (625) is provided at the upper end of the gas pipe (626), and the nozzle (625) extends into the runner pipe (624) in a crescent shape.

7. A novel quantitative pouring device for reducing the fluctuation of pipe weight according to claim 6, characterized in that: A connecting pipe (622) is provided at the bottom of the gas pipe (626). A mounting pipe (627) is provided inside the connecting pipe (622). One end of the pouring pipe (623) is provided with a gas push pump (621). One end of the mounting pipe (627) penetrates through the pouring pipe (623) and is connected to the gas push pump (621).

8. A novel quantitative pouring device for reducing the weight fluctuation of pipes, characterized in that: A plugging piece (629) for separating the molten metal inside the pouring pipe (623) is arranged inside the pouring pipe (623). An electromagnetic heating element (628) is arranged on one side of the plugging piece (629), and the electromagnetic heating element (628) is located inside the pouring pipe (623).

9. A novel quantitative pouring device for reducing the fluctuation of pipe weight according to claim 8, characterized in that: The magnetic stirring assembly (61) includes an electromagnetic stirrer (611) and a flat convex pipe (612). The flat convex pipe (612) is installed at one end of the pouring pipe (623). The electromagnetic stirrer (611) is sleeved outside the flat convex pipe (612). The cross-section of the flat convex pipe (612) is elliptical, and a convex package is arranged in the middle of the flat convex pipe (612).

10. A new type of quantitative pouring method for reducing the fluctuation of pipe weight, which adopts the new type of quantitative pouring device for reducing the fluctuation of pipe weight described in any one of claims 1-9, is characterized in that The specific pouring method is as follows: S1. During pouring, the quantitative servo device inside the shaft rotating frame (2) controls the rotation and inclination angle of the load-bearing platform (4). The weighing system inside the load-bearing platform (4) measures the weights of the sector package (3) and the molten metal. According to the weight of the metal pipe production, the inclination angle of the load-bearing platform (4) of the load-bearing platform (4) is controlled through the cooperation of the shaft rotating frame (2) and the hydraulic ejector rod (7), so as to ensure that the weight fluctuation of the produced pipe is small. S2. The sector package (3) inclines to pour the molten metal into the inside of the pouring flow channel mechanism (6). The slag cleaning mechanism (5) provided will also move along with the inclination of the load-bearing platform (4). When the molten metal flows out from the drainage nozzle of the sector package (3), the slag cleaning mechanism (5) cleans the residues and oxide layers on the surface of the molten metal at the position of the drainage nozzle, and the slag cleaning mechanism (5) also sprays inert gas and guides the inert gas to blow on the surface of the molten metal at the drainage nozzle. S3. After the molten metal is poured into the inside of the magnetic stirring assembly (61) through the sector package (3), the inert gas ejected by the magnetic stirring assembly (61) fills the cavity injected with the molten metal. The molten metal guided by the magnetic stirring assembly (61) will flow into the gas protection assembly (62). The gas protection assembly (62) uses the magnetic field to generate a force on the conductive molten metal, promotes the fluidity and composition uniformity of the molten metal, and reduces the segregation phenomenon.

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