A new quantitative pouring device and method for reducing pipe weight fluctuations

Abstract

The application discloses a novel quantitative pouring device and method for reducing pipe weight fluctuation, and relates to the technical field of casting. The novel quantitative pouring device for reducing pipe weight fluctuation comprises a support frame, two shaft rotating frames are symmetrically arranged at the upper end of the support frame, a load-bearing platform is rotatably arranged between the two shaft rotating frames, a fan-shaped ladle is arranged in the load-bearing platform, a hydraulic top rod is arranged at the bottom of the load-bearing platform, and a scum cleaning mechanism for cleaning the surface oxidation layer of the metal solution in the fan-shaped ladle is arranged at the upper end of the load-bearing platform. In the application, when the metal solution flows out from the flow guide nozzle of the fan-shaped ladle, the scum cleaning mechanism can effectively clean the residual substances and the oxidation layer on the surface of the metal solution at the position of the flow guide nozzle. Moreover, the scum cleaning mechanism not only cleans the residual substances, but also sprays inert gas and guides the inert gas to blow on the surface of the metal solution at the flow guide nozzle, so that a protective film can be formed to prevent the metal solution from being oxidized by contacting with air.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting, in particular to a novel quantitative pouring device and method for reducing pipe weight fluctuation. BACKGROUND

[0002] For example, patent No. CN113020553A, the invention is named a pouring device. The pouring device has: a ladle with a nozzle, which stores metal melt; a tilting mechanism that tilts the ladle to maintain the distance between the nozzle and the tapping position of the ladle at a specified position; and a radiation thermometer with a sensor head that outputs a signal related to the temperature of the measured position, and an amplifier part that processes the signal output by the sensor head, the sensor head is configured in a way that the measured position becomes the tapping position, and outputs a signal related to the temperature of the metal melt flowing from the tapping position.

[0003] When the metal liquid in the pouring device contacts with oxygen in the air, the surface of the metal liquid is easy to form residues and oxidation layers. Even if cleaned in time, the metal liquid will still contact with oxygen during pouring, increasing the risk of defects such as pores and shrinkage on the surface of the casting, and the metal liquid may have problems such as poor flowability or uneven composition during pouring, causing segregation, affecting the mechanical properties and consistency of the casting. Therefore, the present application provides a novel quantitative pouring device and method for reducing pipe weight fluctuation to meet the needs. SUMMARY

[0004] The present application aims to provide a novel quantitative pouring device and method for reducing pipe weight fluctuation, which can effectively solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a novel quantitative pouring device for reducing pipe weight fluctuation, comprising a support frame, two shaft rotation frames are symmetrically arranged at the upper end of the support frame, a load-bearing platform is rotatably installed between the two shaft rotation frames, a fan-shaped 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 surface oxidation layer of the metal solution inside the fan-shaped ladle is arranged at the upper end of the load-bearing platform, and a pouring flow channel mechanism for guiding the pouring of the metal solution is arranged inside the support frame.

[0006] The pouring flow channel mechanism comprises a gas protection assembly for gas protection of the metal solution and a magnetic stirring assembly for promoting the flowability and composition uniformity of the metal liquid.

[0007] The dross cleaning mechanism comprises a mounting frame installed at the upper end of the load-bearing platform, a guide is arranged at the bottom of the mounting frame, and the cross section of the guide is in the shape of a water droplet for dividing the surface oxidation layer of the metal solution.

[0008] The inside of the guide is provided with an inert gas channel, the upper part of the outer surface of the guide is provided with an inert gas pipe in communication with the inside of the inert gas channel, one end of the inert gas pipe is connected with an inert gas pipeline, one end of the guide is provided with a gas nozzle mounted in the inside of the inert gas channel, and the bottom of the gas nozzle is provided with a gas guide hole.

[0009] The outer surface of the guide is provided with guide leaves on both sides, the upper end of the sector-shaped bag is symmetrically provided with two baffle plates, the opposite surfaces of the two baffle plates are provided with inclined plates, and the guide leaves cooperate with the inclined plates to guide and rest on the surface oxidation layer of the metal solution.

[0010] The gas nozzle is in the shape of a sector, and the position of the gas nozzle is higher than the surface of the metal solution.

[0011] The bottom of the guide and the guide leaves are in contact with the metal solution, and the included angle between the guide leaves and the guide is less than ninety degrees.

[0012] The gas protection assembly comprises a flow channel pipe mounted in the inside of the support frame, the bottom of the flow channel pipe is provided with a pouring pipe, one side of the outer surface of the flow channel pipe is provided with a gas pipe, the upper end of the gas pipe is provided with a nozzle, and the nozzle extends into the inside of the flow channel pipe in the shape of a crescent.

[0013] The bottom of the gas pipe is provided with a communication pipe, the inside of the communication pipe is provided with a mounting pipe, one end of the pouring pipe is provided with a gas pushing pump, and one end of the mounting pipe penetrates through the pouring pipe and is connected with the gas pushing pump.

[0014] The inside of the pouring pipe is provided with a blocking piece for separating the metal solution in the inside of the pouring pipe, one side of the blocking piece is provided with an electromagnetic heating element, and the electromagnetic heating element is located in the inside of the pouring pipe.

[0015] The magnetic stirring assembly comprises an electromagnetic stirrer and a flat convex pipe, the flat convex pipe is mounted 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 in the shape of an ellipse, and the middle part of the flat convex pipe is provided with a convex bag.

[0016] The application also provides a novel quantitative pouring method for reducing the fluctuation of pipe weight, and the method adopts a novel quantitative pouring device for reducing the fluctuation of pipe weight, and the specific pouring method is as follows:

[0017] S1, the quantitative servo device in the inside of the shaft rotating frame controls the rotation of the load bearing platform to cut the inclination angle, the weighing system in the inside of the load bearing platform measures the weight of the sector-shaped bag and the metal solution, the inclination angle of the load bearing platform is controlled by the shaft rotating frame and the hydraulic jacks in cooperation according to the weight of the metal pipe production, so as to ensure that the weight fluctuation of the produced pipe is small.

[0018] S2, the fan-shaped bag is inclined so that the metal solution is poured into the inside of the pouring runner mechanism, and the dross cleaning mechanism is also moved along with the inclination of the bearing platform; when the metal solution flows out of the flow guide nozzle of the fan-shaped bag, the dross cleaning mechanism cleans the residue and oxide layer on the surface of the metal solution at the position of the flow guide nozzle, and the dross cleaning mechanism also sprays inert gas and guides the inert gas to blow on the surface of the metal solution at the flow guide nozzle;

[0019] S3, after the metal solution is poured into the inside of the magnetic stirring assembly through the fan-shaped bag, the inert gas sprayed by the magnetic stirring assembly fills the cavity of the metal solution injection, the metal solution guided by the magnetic stirring assembly flows into the inside of the gas protection assembly, and the gas protection assembly uses the magnetic field to generate force on the conductive metal liquid, so as to promote the flowability and composition uniformity of the metal liquid and reduce segregation.

[0020] In summary, the technical effects and advantages of the present application are as follows:

[0021] 1, in the present application, when the metal solution flows out of the flow guide nozzle of the fan-shaped bag, the dross cleaning mechanism can effectively clean the residue and oxide layer on the surface of the metal solution at the position of the flow guide nozzle, and the dross cleaning mechanism not only cleans the residue, but also sprays inert gas and guides it to blow on the surface of the metal solution at the flow guide nozzle, so as to form a protective film, prevent the metal solution from being oxidized by contacting with air, and further ensure the purity of the metal liquid.

[0022] 2, in the present application, the inert gas such as argon sprayed by the magnetic stirring assembly fills the cavity of the metal solution injection, forms a protective film, prevents the metal solution from being oxidized by contacting with air, maintains the purity of the metal liquid, reduces casting defects caused by oxide inclusions, generates force on the conductive metal liquid through the magnetic field, and the magnetic stirring assembly can not only guide the flow of the metal liquid, but also promote the uniform distribution of the metal liquid in the mold. The shear stress generated in the process of electromagnetic stirring helps to break the growing large grains, so as to refine the grain structure, and the fine grain structure improves the mechanical properties such as higher strength and toughness. And the gas protection assembly uses the magnetic field to generate force on the conductive metal liquid, further promotes the uniform distribution of the internal composition of the metal liquid, can reduce the segregation phenomenon, and ensures that the chemical composition of each part of the finally produced pipeline is consistent.

[0023] 3, in the present application, the gas protection assembly continues to provide an inert gas environment, ensures that the metal liquid is always protected during the whole process from pouring to solidification, maximally reduces the possibility of oxidation and air absorption, prevents oxidation, removes impurities and refines the grain structure, reduces common defects in castings such as pores, shrinkage, inclusions, etc., so as to improve the overall quality of the castings. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order 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 needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0025] Figure 1 First perspective view of the pouring device;

[0026] Figure 2 Second perspective view of the pouring device;

[0027] Figure 3 Third perspective view of the pouring device;

[0028] Figure 4 Fourth perspective view of the pouring device;

[0029] Figure 5 Partial perspective view of the pouring device;

[0030] Figure 6 Partial perspective view of the fan-shaped package and the dross cleaning mechanism;

[0031] Figure 7 Partial perspective view of the dross cleaning mechanism;

[0032] Figure 8 Partial perspective view of the dross cleaning mechanism;

[0033] Figure 9 Partial perspective view of the guide;

[0034] Figure 10 Partial perspective view of the gas nozzle;

[0035] Figure 11 Partial perspective view of the pouring channel mechanism;

[0036] Figure 12 Partial perspective view of the magnetic stirring assembly and the gas protection assembly;

[0037] Figure 13 Partial perspective view of the gas protection assembly;

[0038] Figure 14 Partial perspective view of the gas protection assembly;

[0039] Figure 15 Partial perspective view of the gas protection assembly and the magnetic stirring assembly.

[0040] In the figure: 1, support frame; 2, shaft rotating frame; 3, fan-shaped package; 4, bearing platform; 5, dross cleaning mechanism; 51, mounting frame; 52, inert gas pipe; 53, gas nozzle; 54, partition; 55, inclined plate; 56, guide; 57, guide blade; 58, inert gas channel; 59, gas guide hole; 6, pouring runner mechanism; 61, magnetic stirring assembly; 611, electromagnetic stirrer; 612, flat convex pipe; 62, gas protection assembly; 621, gas pushing pump; 622, communication pipe; 623, pouring pipe; 624, runner pipe; 625, nozzle; 626, gas pipe; 627, mounting pipe; 628, electromagnetic heating element; 629, blocking piece; 7, hydraulic ejector rod. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] Embodiment one, refer to Figures 1 to 15 The novel quantitative pouring device for reducing pipe weight fluctuation shown in the figure comprises a support frame 1, two shaft rotating frames 2 are symmetrically arranged at the upper end of the support frame 1, a bearing platform 4 is rotatably installed between the two shaft rotating frames 2, a fan-shaped package 3 is installed in the bearing platform 4, a hydraulic ejector rod 7 is arranged at the bottom of the bearing platform 4, a dross cleaning mechanism 5 for cleaning the surface oxidation layer of the metal solution in the fan-shaped package 3 is arranged at the upper end of the bearing platform 4, and a pouring runner mechanism 6 for guiding the pouring of the metal solution is arranged in the support frame 1;

[0043] The pouring runner mechanism 6 comprises a gas protection assembly 62 for protecting the metal solution and a magnetic stirring assembly 61 for promoting the flowability and uniformity of the metal solution;

[0044] It is worth noting that the inclination angle of the bearing platform 4 is controlled by a quantitative servo device in the shaft rotating frame 2 during pouring, the weight of the fan-shaped package 3 and the metal solution is measured by a weighing system in the bearing platform 4, and the inclination angle of the bearing platform 4 of the bearing platform 4 is controlled by the shaft rotating frame 2 and the hydraulic ejector rod 7 according to the weight of the metal pipe produced, so as to ensure that the weight fluctuation of the produced pipe is small.

[0045] The inclination angle of the bearing platform 4 is adjusted by the quantitative servo device in the shaft rotating frame 2, so as to realize the accurate control of the speed and quantity of the metal solution flowing into the mold, ensure the consistency of the weight of each pouring, and reduce the weight fluctuation of the pipe.

[0046] The weighing system inside the load-bearing platform 4 can measure the weight of the sector-shaped ladle 3 and the metal solution in real time, and adjust the inclination angle of the platform through the cooperation of the shaft rotating frame 2 and the hydraulic jacking rod 7 according to the production requirements, so as to ensure the stability of the weight of the produced pipeline.

[0047] The weighing system can stabilize the weight of the pipe within ±1%, and the significant reduction of the fluctuation of the weight of the pipe can reduce the quality risks such as uneven wall thickness, water leakage and pipe explosion of the pipe with a low weight, and the reduction of the fluctuation rate of the weight of the pipe can greatly reduce the need to increase the overall weight of the pipe in order to meet the wall thickness of the light pipe, thereby causing the increase of the overweight rate of the pipe and the waste of the cost of raw materials. The weighing system can quantitatively fill the bell metal liquid, quantitatively fill the pipe body metal liquid, quantitatively fill the tail metal liquid, and quantitatively weigh the system and the integrated speed of the ladle, so as to dynamically adjust the ladle speed in real time, thereby ensuring the constant amount of molten iron poured out per unit time and achieving the effect of constant flow.

[0048] The load-bearing platform 4 can measure and record the flow time of the metal liquid during pouring according to the flowability of the metal liquid, and then correct the main machine speed in real time according to the change rate of the flow time, so as to ensure the uniformity of the wall thickness of the pipe and reduce the quality risk of the local thin wall of the pipe, thereby better controlling the overweight rate of the pipe, reducing the waste of resources and reducing the cost.

[0049] The inclination of the sector-shaped ladle 3 causes the metal solution to pour into the inside of the pouring flow channel mechanism 6, and the floating slag cleaning mechanism 5 also moves with the inclination of the load-bearing platform 4. When the metal solution flows out of the flow guide nozzle of the sector-shaped ladle 3, the floating slag cleaning mechanism 5 cleans the residue and oxidation layer on the surface of the metal solution at the position of the flow guide nozzle, and the floating slag cleaning mechanism 5 also sprays inert gas and guides the inert gas to blow on the surface of the metal solution at the flow guide nozzle;

[0050] When the metal solution flows out of the flow guide nozzle of the sector-shaped ladle 3, the floating slag cleaning mechanism 5 can effectively clean the residue and oxidation layer on the surface of the metal solution at the position of the flow guide nozzle, and the floating slag cleaning mechanism 5 not only cleans the residue, but also sprays inert gas and guides it to blow on the surface of the metal solution at the flow guide nozzle, so as to form a protective film to prevent the metal solution from contacting the air and causing oxidation reaction, thereby further ensuring the purity of the metal liquid.

[0051] After the metal solution pours into the inside of the magnetic stirring assembly 61 through the sector-shaped ladle 3, the inert gas sprayed by the magnetic stirring assembly 61 fills the cavity of the metal solution injection, and the metal solution guided by the magnetic stirring assembly 61 flows into the inside of the gas protection assembly 62. The gas protection assembly 62 uses the magnetic field to generate force on the conductive metal liquid, so as to promote the flowability and composition uniformity of the metal liquid and reduce the segregation phenomenon.

[0052] The inert gas, such as argon, sprayed by the magnetic stirring assembly 61 fills the cavity of the metal solution injection molding to form a protective film, preventing the metal solution from contacting the air to cause oxidation reaction, maintaining the purity of the metal liquid, reducing the casting defects caused by oxide inclusions, and generating force on the conductive metal liquid by the magnetic field. The magnetic stirring assembly 61 can not only guide the flow of the metal liquid, but also promote the uniform distribution of the metal liquid 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 and dense grain structure improves the mechanical properties, such as higher strength and toughness.

[0053] The gas protection assembly 62 generates force on the conductive metal liquid by the magnetic field, further promoting the uniform distribution of the internal components of the metal liquid, and can reduce the segregation phenomenon to ensure that the chemical composition of each part of the finally produced pipeline is consistent.

[0054] The gas protection assembly 62 continues to provide an inert gas environment to ensure that the metal liquid is always protected during the whole process from pouring to solidification, thereby minimizing the possibility of oxidation and air absorption. By preventing oxidation, removing impurities, and refining the grain structure, common defects in castings, such as pores, shrinkage, inclusions, etc., are reduced, thereby improving the overall quality of the castings.

[0055] Embodiment two, according to the floating slag cleaning mechanism 5 provided in embodiment one, the present embodiment provides further technical solutions of the floating slag cleaning mechanism 5.

[0056] The floating slag cleaning mechanism 5 comprises a mounting frame 51 mounted on the upper end of the bearing platform 4, and the bottom of the mounting frame 51 is provided with a guide 56. The guide 56 is in the shape of a water droplet and is used to separate the oxidation layer on the surface of the metal solution.

[0057] The guide 56 is internally provided with an inert gas channel 58, and the outer surface of the guide 56 is provided with an inert gas pipe 52 in communication with the inside of the inert gas channel 58. One end of the inert gas pipe 52 is connected with an inert gas pipeline, and one end of the guide 56 is provided with a gas nozzle 53 mounted in the inert gas channel 58. The bottom of the gas nozzle 53 is provided with a gas guide hole 59.

[0058] It is worth noting that after the metal liquid in the fan-shaped package 3 contacts the guide 56, the guide 56 with the curvature can separate the residues on the surface of the metal liquid and guide the residues on the surface of the metal liquid to the position of the guide vane 57. The bottom of the guide 56 and the guide vane 57 both contact the metal solution, and the included angle between the guide vane 57 and the guide 56 is less than ninety degrees, so that the guide 56 and the guide vane 57 are combined to form a backward-swept wing design, which can guide the metal residues to disperse to both sides. The inclined plate 55 is arranged on one side of the guide vane 57, the guide vane 57 guides the flow of the residues to be stranded in the inside of the inclined plate 55, and the inclined plate 55 isFigure 8 The shape shown is used to scrape off residue from the surface of molten metal.

[0059] Guide vanes 57 are provided on both sides of the outer surface of the guide 56. Two partitions 54 are symmetrically arranged at the upper end of the fan-shaped package 3. Inclined plates 55 are provided on the opposite sides of the two partitions 54. The guide vanes 57 and the inclined plates 55 cooperate to guide and support the oxide layer on the surface of the metal solution.

[0060] The gas nozzle 53 is fan-shaped and is positioned above the surface of the molten metal.

[0061] It is worth noting that when the guide vane 57 and the inclined plate 55 work together to treat the residue on the surface of the molten metal, the inert gas pipe 52 injects inert gas into the interior of the inert gas channel 58, and the gas is discharged through the gas nozzle 53. The gas guide hole 59 assists the gas nozzle 53 in exhausting the gas and blowing it onto the surface of the molten metal. Furthermore, the gas nozzle 53 is located at the outlet of the fan-shaped package 3, so that the surface of the molten metal flowing into the casting channel mechanism 6 will not be oxidized.

[0062] Among them, the guide 56 has a specific curvature, which can effectively separate the residue on the surface of the molten metal and guide it to the position of the guide blade 57, separating the scum from the main molten metal flow and reducing the amount of impurities entering the mold. The included angle between the guide 56 and the guide blade 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 subsequent processes. The guide blade 57 further guides the residue to the position of the inclined plate 55 to stand, so that the residue is concentrated in a specific area for easy cleaning, improving the residue removal efficiency and reducing interference with the flowability of the molten metal.

[0063] Moreover, the inclined plate 55 is... Figure 8 The shape shown is specifically designed to scrape off residue from the surface of molten metal and collect it in a specific area. Inert gas, such as argon, is injected into the inert gas channel 58 through the inert gas tube 52 and discharged through the gas nozzle 53, forming a protective film covering the surface of the molten metal to prevent it from oxidizing upon contact with air. The gas guide hole 59 assists the gas nozzle 53 in exhausting gas, ensuring that the inert gas is evenly distributed across the entire surface of the molten metal, further enhancing the protective effect.

[0064] Example 3: Based on the casting channel mechanism 6 provided in Example 1, this example provides a further technical solution for the gas protection component 62 and the magnetic stirring component 61.

[0065] The gas protection assembly 62 includes a flow channel pipe 624 installed inside the support frame 1, the bottom of the flow channel pipe 624 is provided with a pouring pipe 623, one side of the outer surface of the flow channel pipe 624 is provided with a gas pipe 626, the upper end of the gas pipe 626 is provided with a nozzle 625, and the nozzle 625 extends into the inside of the flow channel pipe 624 in a crescent shape.

[0066] The bottom of the gas pipe 626 is provided with a communication pipe 622, the inside of the communication pipe 622 is provided with a mounting pipe 627, one end of the pouring pipe 623 is provided with a gas pushing pump 621, and one end of the mounting pipe 627 penetrates through the pouring pipe 623 and is connected with the gas pushing pump 621.

[0067] It is worth noting that after the molten metal pours into the inside of the flow channel pipe 624, the gas enters into the inside of the mounting pipe 627 through the gas pushing pump 621, and then the gas is sent into the nozzle 625 through the communication pipe 622 and the gas pipe 626. The nozzle 625 is arranged to extend into the inside of the flow channel pipe 624, and inert gas is injected into the inside of the flow channel pipe 624 through the nozzle 625 to mix with the molten metal.

[0068] The inside of the pouring pipe 623 is provided with a blocking piece 629 for separating the molten solution inside the pouring pipe 623, one side of the blocking piece 629 is provided with an electromagnetic heating element 628, and the electromagnetic heating element 628 is located inside the pouring pipe 623.

[0069] Among them, the inert gas entering the inside of the pouring pipe 623 through the flow channel pipe 624 is blocked and guided into the inside of the magnetic stirring assembly 61 by the blocking piece 629, and the electromagnetic heating element 628 arranged on one side of the blocking piece 629 heats the inside of the pouring pipe 623, so that the temperature of the molten metal entering the inside of the magnetic stirring assembly 61 from the flow channel pipe 624 does not decrease greatly.

[0070] Among them, the gas pushing pump 621 sends inert gas such as argon into the mounting pipe 627, and finally reaches the nozzle 625 through the communication pipe 622 and the gas pipe 626. The inert gas is directly injected into the inside of the flow channel pipe 624 and mixed with the molten metal to form a protective film covering the surface of the molten metal, effectively preventing it from contacting with air and causing oxidation reaction.

[0071] During the entire pouring process, inert gas is continuously supplied to ensure that the molten metal is always protected by inert gas from the flow channel pipe 624 to the pouring pipe 623 and then to the magnetic stirring assembly 61, thereby minimizing the possibility of oxidation. Moreover, the design of the flow channel pipe 624 enables the molten metal to flow smoothly into the inside of the pouring pipe 623, thereby reducing the possibility of turbulence and splashing, which helps to maintain the uniformity and purity of the molten metal.

[0072] And the electromagnetic heating element 628 arranged on one side of the sealing sheet 629 heats the inside of the pouring pipe 623, ensures that the temperature of the metal liquid does not drop significantly during the process of entering the inside of the magnetic stirring assembly 61 from the runner pipe 624, maintains the liquidity of the metal liquid, prevents premature solidification, and can preheat the pouring pipe 623 before pouring through the electromagnetic heating element 628.

[0073] The magnetic stirring assembly 61 comprises 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 in an elliptical shape, and the middle part of the flat convex pipe 612 is provided with a convex bag.

[0074] It is worth noting that when the metal liquid 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 metal liquid by using a magnetic field, promote the liquidity and composition uniformity of the metal liquid, and reduce the segregation phenomenon, the flat convex pipe 612 is designed in an elliptical pipe shape, and the middle part of the flat convex pipe 612 is provided with a convex bag, which can make the metal liquid move violently in the inside of the flat convex pipe 612 without affecting the subsequent pouring, and also does not affect the normal pouring flow of the metal liquid injected from the runner pipe 624 into the inside of the pouring pipe 623.

[0075] Among them, the electromagnetic stirrer 611 generates a force on the conductive metal liquid by using a magnetic field, so as to make the metal liquid move violently in the inside of the flat convex pipe 612, ensure that it is fully mixed and uniformly distributed, and the violent movement of the metal liquid breaks the local stagnant area in the metal liquid, prevents uneven flow caused by gravity or temperature difference.

[0076] Moreover, the electromagnetic stirring can make alloy elements of different densities or solubilities more uniformly distributed in the whole melt, thereby reducing center segregation and other uneven phenomena, because uneven composition can lead to a decrease in mechanical properties.

[0077] And the flat convex pipe 612 is designed in an elliptical pipe shape, and the middle part is provided with a convex bag, which increases the complexity of the flow path of the metal liquid in the pipeline, further enhances the stirring effect, the convex bag can guide the metal liquid to form a more complex flow pattern, promote more thorough mixing, although the middle part is provided with the convex bag to increase the stirring effect, through the effective combination of electromagnetic stirring and special pipeline design, the segregation phenomenon in the metal liquid and other defects caused by uneven composition, such as pores, shrinkage, etc. are significantly reduced, and the quality of the final casting is improved.

[0078] The application also provides a new quantitative pouring method for reducing the fluctuation of pipe weight, and the specific pouring method is as follows:

[0079] S1, the pouring angle of the bearing platform 4 is controlled by the quantitative servo device inside the shaft rotating frame 2, the weight of the sector package 3 and the metal solution is measured by the weighing system inside the bearing platform 4, and the inclination angle of the bearing platform 4 of the bearing platform 4 is controlled by the shaft rotating frame 2 and the hydraulic jack 7 according to the weight of the metal pipe production, so as to ensure that the weight fluctuation of the produced pipe is small;

[0080] S2, the sector package 3 is inclined to make the metal solution pour into the inside of the pouring runner mechanism 6, and the scum cleaning mechanism 5 is also moved with the inclination of the bearing platform 4, when the metal solution flows out from the drainage nozzle of the sector package 3, the scum cleaning mechanism 5 cleans the residue and oxide layer on the surface of the metal solution at the position of the drainage nozzle, and the scum cleaning mechanism 5 also sprays inert gas and guides the inert gas to blow on the surface of the metal solution at the drainage nozzle;

[0081] S3, after the metal solution is poured into the inside of the magnetic stirring assembly 61 through the sector package 3, the inert gas sprayed by the magnetic stirring assembly 61 fills the cavity of the metal solution injection, the metal solution guided by the magnetic stirring assembly 61 will flow into the inside of the gas protection assembly 62, and the gas protection assembly 62 uses the magnetic field to generate force on the conductive metal liquid, so as to promote the flowability and composition uniformity of the metal liquid and reduce the segregation phenomenon

[0082] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A novel quantitative casting device for reducing pipe weight fluctuation, comprising a support frame (1), the upper end of the support frame (1) is symmetrically provided with two shaft rotating frames (2), characterized in that: Two said shaft rotating frame (2) between the installation of bearing platform (4), the inside of said bearing platform (4) is installed fan pack (3), the bottom of said bearing platform (4) is provided with hydraulic jack (7), the upper end of said bearing platform (4) is provided with scum cleaning mechanism (5) for cleaning the surface of the metal solution in the fan pack (3), the inside of said support frame (1) is provided with pouring flow channel mechanism (6) for guiding the pouring of metal solution; Said pouring flow channel mechanism (6) includes a gas protection assembly (62) for gas protection of the metal solution and a magnetic stirring assembly (61) for promoting the flowability and composition uniformity of the metal solution; Said scum cleaning mechanism (5) includes a mounting frame (51) mounted on the upper end of the bearing platform (4), the bottom of said mounting frame (51) is provided with a guide (56), the cross section of said guide (56) is in the shape of a water drop for segmenting the surface oxide layer of the metal solution; Said gas protection assembly (62) includes a flow channel pipe (624) mounted in the inside of the support frame (1), the bottom of said flow channel pipe (624) is provided with a pouring pipe (623), one side of the outer surface of said flow channel pipe (624) is provided with a gas pipe (626), the upper end of said gas pipe (626) is provided with a nozzle (625), and the nozzle (625) extends into the inside of the flow channel pipe (624) in the shape of a crescent moon; The bottom of said gas pipe (626) is provided with a communication pipe (622), the inside of said communication pipe (622) is provided with a mounting pipe (627), one end of said pouring pipe (623) is provided with a gas pushing pump (621), and one end of said mounting pipe (627) penetrates through the pouring pipe (623) and is connected with the gas pushing pump (621); The inside of said pouring pipe (623) is provided with a blocking piece (629) for separating the metal solution in the inside of the pouring pipe (623), one side of said blocking piece (629) is provided with an electromagnetic heating element (628), and the electromagnetic heating element (628) is located in the inside of the pouring pipe (623); Said magnetic stirring assembly (61) includes an electromagnetic stirrer (611) and a flat convex pipe (612), said flat convex pipe (612) is mounted at one end of the pouring pipe (623), said electromagnetic stirrer (611) is sleeved on the outside of the flat convex pipe (612), the cross section of said flat convex pipe (612) is in the shape of an ellipse, and a convex bag is arranged in the middle of the flat convex pipe (612); The inside of said guide (56) is provided with an inert gas channel (58), the outer surface of said guide (56) is provided with an inert gas pipe (52) in communication with the inside of the inert gas channel (58), one end of said inert gas pipe (52) is connected with an inert gas pipeline, one end of said guide (56) is provided with a gas nozzle (53) mounted in the inside of the inert gas channel (58), and the bottom of said gas nozzle (53) is provided with a gas guide hole (59). The outer surface of the guide (56) is provided with guide leaves (57) on both sides, the upper end of the sector-shaped package (3) is symmetrically provided with two partitions (54), the opposite surfaces of the two partitions (54) are provided with inclined plates (55), and the guide leaves (57) cooperate with the inclined plates (55) to guide and rest on the surface oxide layer of the metal solution. When the metal solution flows out of the drainage nozzle of the sector-shaped package (3), the dross cleaning mechanism (5) can effectively clean the residual slag and the oxide layer on the surface of the metal solution at the position of the drainage nozzle, and the dross cleaning mechanism (5) not only cleans the residual slag, but also sprays inert gas and guides the inert gas to blow on the surface of the metal solution at the drainage nozzle, forming a protective film to prevent the metal solution from being oxidized by contacting with air, and ensuring the purity of the metal liquid.

2. A novel dosing device for reducing pipe weight fluctuation according to claim 1, characterized in that: The gas nozzle (53) is in the shape of a sector, and the position of the gas nozzle (53) is higher than the surface of the metal solution.

3. A novel dosing device for reducing pipe weight fluctuation according to claim 2, characterized in that: The bottom of the guide (56) and the guide leaves (57) are in contact with the metal solution, and the included angle between the guide leaves (57) and the guide (56) is less than ninety degrees.

4. A novel gravimetric fluctuation reducing method for a gravimetric fluctuation reducing apparatus according to any one of claims 1 to 3, characterized by The specific pouring method is as follows: S1, when pouring, the load-bearing platform (4) is controlled to rotate and cut the inclination angle through the quantitative servo device inside the shaft rotating frame (2), the weight of the sector-shaped package (3) and the metal solution is measured by the weighing system inside the load-bearing platform (4), and 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 jack (7) according to the weight of the metal pipe production, so as to ensure that the weight fluctuation of the produced pipe is small; S2, the sector-shaped package (3) is inclined to make the metal solution pour into the inside of the pouring runner mechanism (6), and the dross cleaning mechanism (5) is also moved with the inclination of the load-bearing platform (4), when the metal solution flows out of the drainage nozzle of the sector-shaped package (3), the dross cleaning mechanism (5) cleans the residual slag and the oxide layer on the surface of the metal solution at the position of the drainage nozzle, and the dross cleaning mechanism (5) also sprays inert gas and guides the inert gas to blow on the surface of the metal solution at the drainage nozzle; S3, after the metal solution is poured into the inside of the magnetic stirring assembly (61) through the sector-shaped package (3), the inert gas sprayed by the magnetic stirring assembly (61) fills the cavity of the metal solution injection, the metal solution guided by the magnetic stirring assembly (61) flows into the inside of the gas protection assembly (62), and the gas protection assembly (62) utilizes the magnetic field to generate a force on the conductive metal liquid, promotes the fluidity and uniformity of the metal liquid, and reduces the segregation phenomenon.

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