Electromagnetic stirrer core

Abstract

The utility model discloses an electromagnetic stirrer iron core, including the iron core (15) of the circular arc line of the axis, the iron core (15) sets up on electromagnetic stirrer (10). The utility model discloses electromagnetic stirring iron core (15)'s axis is the circular arc line, and the magnetic field produced is the circular arc line of rotating movement around a radius, can make alloy element distribution even in alloy metal liquid, and gradually crystallize while cooling, and make the grain get refinement.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic stirring technology, and in particular to an electromagnetic stirrer core. Background Technology

[0002] In existing technologies, steel casting machines are equipped with electromagnetic stirrers to improve the density of ingot grains, making them finer and increasing equiaxed crystals while reducing columnar crystals. This is especially important for casting alloy materials, ensuring a uniform and dense distribution of the alloy within the ingot. The core of this electromagnetic stirrer has a straight axis, generating an electromagnetic stirring magnetic field that rotates around this axis. The crystallizer axis is straight, and the ingot is cylindrical.

[0003] However, in the electrical copper and aluminum rod (non-ferrous metal) industry, the crystallizer used is a crystallizing wheel. The ingot is placed in the crystallizing wheel, and the axis of the ingot is an arc of a certain radius. Practical tests have proven that electromagnetic stirrers with a straight iron core axis still result in uneven distribution of alloy components in the ingot and fail to achieve the desired stirring effect. Even with particularly successful steel castings, the process still ends in failure. Utility Model Content

[0004] The purpose of this invention is to provide an electromagnetic stirrer core to solve the technical problem that existing electromagnetic stirrers do not stir the alloy composition of non-ferrous metal ingots evenly, resulting in the alloy elements not being able to crystallize in a uniform state.

[0005] This utility model is achieved using the following technical solution: an electromagnetic stirrer core, comprising an iron core with an arc-shaped axis, the iron core being mounted on a stirrer, which is an electromagnetic stirrer used to perform a stirring process before casting non-ferrous metals (copper, aluminum, etc.). During the process from stirring to casting, some of the uniformly distributed alloying elements in the non-ferrous metal will precipitate or float, resulting in uneven distribution of alloying elements in the substrate and coarse grains, severely affecting the mechanical and physical properties of the product. Therefore, the electromagnetic stirrer can generate a rotating motion driven by a magnetic field, making the alloying elements in the liquid uniformly distributed. Simultaneously, cooling and gradual crystallization refine the grains. Because stirring and crystallization occur simultaneously, the alloying elements crystallize in a uniform state, ensuring that the internal alloying elements remain in a uniform state after cooling.

[0006] Furthermore, the iron core includes multiple sets of iron sheets, which are closely attached to form an iron core with an arc-shaped axis.

[0007] Furthermore, the iron sheet groups are connected by screws, and multiple iron sheet groups are connected together by screws to form an iron core with an arc axis.

[0008] Furthermore, each set of iron sheets consists of multiple iron sheets of the same size. The multiple iron sheets are tightly attached together by screws to form an iron sheet set, and then the iron sheet sets are connected to form an iron core with an arc axis.

[0009] Furthermore, the iron sheet is provided with multiple round holes, through which screws are installed, and the screws pass through the round holes to fasten the iron sheet.

[0010] Furthermore, the circular holes in the same group of iron sheets are in the same position. A certain number of iron sheets are drilled at the same position and connected by screws to form an iron sheet group. The circular holes in different groups of iron sheets are in different positions. Since the opening positions of different groups of iron sheets are different, when multiple groups of iron sheets are connected, an iron core with an arc axis can be formed.

[0011] The beneficial effects of this utility model are as follows: The axis of the electromagnetic stirring iron core of this utility model is an arc, and the magnetic field generated rotates around an arc with a certain radius, which can make the alloy elements in the alloy molten metal evenly distributed. At the same time, it gradually crystallizes upon cooling and refines the grains. Since the stirring and crystallization are carried out simultaneously, the alloy elements crystallize in a uniform state, so that the alloy elements inside the alloy molten metal remain in a uniform state after cooling. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 A schematic diagram of an iron core structure with a straight axis; Figure 3 This is a front view of the present utility model; Figure 4 This is a schematic diagram of the iron sheet structure; Figure 5 Diagram showing the connection relationships between the iron sheet groups; Figure 6 This is a diagram showing the installation location of this utility model; In the diagram, 1-crystallizing wheel, 2-steel belt pulley, 3-steel belt tensioning wheel, 4-steel belt support wheel, 5-steel belt pressing wheel, 6-pressing arm, 7-pressing arm rotating shaft, 8-support frame, 9-steel belt, 10-agitator, 11-anchor, 12-casting machine housing, 13-pouring port, 14-ingot outlet, 15-iron core, 16-iron sheet, 17-round hole, 18-iron sheet assembly, 19-screw. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0016] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0017] See Figures 1 to 6 An electromagnetic stirrer core, comprising a core 15 with an arc-shaped axis (see details). Figure 1 The iron core 15 is disposed within the electromagnetic stirrer 10, which is mounted on the crystallizing wheel of the casting machine. However, the iron core of the existing electromagnetic stirrer has an axis that is a straight line (see [link to details]). Figure 2 The electromagnetic stirring field it generates rotates around a straight axis. Since the crystallizer axis is a straight line and the ingot is cylindrical, it cannot meet the requirements for casting non-ferrous metals.

[0018] In this embodiment, the iron core 15 includes multiple sets of iron sheet groups 18, which are connected by screws 19. Each set of iron sheet groups 18 consists of multiple iron sheets 16. In practical applications, the number of iron sheet groups 18 and the number of iron sheets 16 in each group can be set according to actual needs. For example, 10, 20, or 25 sets of iron sheet groups 18, or more or fewer, can be set, and each set of iron sheet groups 18 can have 10, 15, or 20 iron sheets 16, or more or fewer, to meet the requirements of non-ferrous metal ingot casting.

[0019] In this embodiment, the iron sheet 16 is provided with multiple round holes 17, and the screw 19 passes through the round holes 17 to fasten the iron sheet 16. Specifically, the round holes 17 in the same group of iron sheets 18 are in the same position. A certain number of iron sheets 16 are made with holes in the same position and connected by screws 19 to form an iron sheet group 18. The round holes 17 in different groups of iron sheets 18 are in different positions. Because the opening positions of different groups of iron sheets 18 are different, when multiple groups of iron sheets 18 are connected (the connection relationship between the iron sheet groups 18 can be further referred to...), the iron sheet 16 is fastened. Figure 5 It can form an iron core 15 with an axis of circular arc. The magnetic field it generates rotates around a circular arc of a certain radius, which can make the alloy elements in the metal solution evenly distributed. At the same time, it gradually crystallizes upon cooling and refines the grains. Because its stirring and crystallization are carried out simultaneously, the alloy elements crystallize in a uniform state, so that the alloy elements inside the molten metal remain in a uniform state after cooling.

[0020] See further Figure 6 The specific structure of the crystallizing wheel casting machine is as follows: it includes a crystallizing wheel 1 and a steel belt pulley 2 disposed on one side of the casting machine housing 12; a steel belt support pulley 4 and a steel belt pressing pulley 5 disposed above the crystallizing wheel 1; and a steel belt tensioning pulley 3 disposed outside the casting machine housing 12. The rotation axes of the steel belt tensioning pulley 3 and the steel belt pulley 2 are located on the same horizontal plane and are fixed on the slide groove by a bracket. The tension is ensured by a cylinder. The crystallizing wheel 1, steel belt pulley 2, steel belt tensioning pulley 3, steel belt support pulley 4, and steel belt pressing pulley 5 are all disposed on the same vertical plane. The crystallizing wheel 1 and the steel belt pulley 2 are disposed on the casting machine housing 12 via a rotating shaft. On one side, the steel strip support wheel 4 and the steel strip pressing wheel 5 are arranged on one side of the support frame 8, which is located above the casting machine housing 12. The steel strip support wheel 4 is connected to the support frame 8 via a rotating shaft, and the steel strip pressing wheel 5 is connected to the support frame 8 via a pressing arm 6. One end of the pressing arm 6 is connected to the steel strip pressing wheel 5 via a rotating shaft, and the other end is connected to the support frame 8 via a pressing arm rotating shaft 7. The pressing arm 6 is also connected to a cylinder, which can drive the pressing arm 6 to rotate around the pressing arm rotating shaft 7, thereby raising and lowering the steel strip pressing wheel 5, so that the steel strip pressing wheel 5 can press the steel strip 9 against the crystallizing wheel 1.

[0021] A steel belt 9 is fitted onto a steel belt pulley 2, a steel belt tensioning pulley 3, a steel belt support pulley 4, and a steel belt pressure pulley 5. The steel belt 9 starts from the steel belt pulley 2, passes sequentially through the steel belt tensioning pulley 3, the steel belt support pulley 4, the steel belt pressure pulley 5, and the crystallizing wheel 1, and finally returns to the steel belt pulley 2. The inner side of the steel belt 9 is in contact with the rotating surfaces of the steel belt pulley 2, the steel belt tensioning pulley 3, the steel belt support pulley 4, and the steel belt pressure pulley 5, and the outer side of the steel belt 9 is in contact with the rotating surface of the crystallizing wheel 1. A crystallization groove is provided on the rotating surface of the crystallizing wheel 1, and the steel belt 9 and the crystallization groove on the crystallizing wheel 1 form a crystallization cavity. The crystallization chamber has an inlet 13 and an outlet 14. The inlet 13 is located between the steel belt pressure roller 5 and the crystallization wheel 1, and the ingot outlet 14 is located between the steel belt roller 2 and the crystallization wheel 1. The distance between the center of the outer surface of the steel belt roller 2 and the center of the outer surface of the crystallization wheel 1 is slightly greater than the sum of the radii of the outer surfaces of the steel belt roller 2 and the crystallization wheel 1. An ingot release device 11 is provided at the ingot outlet 14. The ingot release device 11 has a wedge block that is inserted into the crystallization groove of the crystallization wheel 1. After cooling and crystallization, the ingot is peeled off from the crystallization wheel 1 by the wedge block. The crystallization wheel 1 is driven by a motor, which drives the steel belt 9, steel belt roller 2, steel belt tension roller 3, steel belt support roller 4, and steel belt pressure roller 5 to move.

[0022] The crystallization chamber is divided into a stirring section and a crystallization section. The stirring section is located at the front of the crystallization chamber. An electromagnetic stirrer 10 (with an iron core 15 whose axis is an arc) is installed on the outside of the stirring section. The electromagnetic stirrer 10 is located behind the steel belt pressing wheel 5 and between the crystallization wheel 1 and the pressing arm rotating shaft 7. The steel belt support wheel 4 lifts the steel belt 9 between the steel belt tensioning wheel 3 and the steel belt pressing wheel 5, thereby reserving sufficient space for the pressing arm rotating shaft 7 and the electromagnetic stirrer 10. After entering the crystallization chamber through the pouring port 13, the molten alloy metal passes through the steel strip clamping wheel 5 and enters the stirring section. It is stirred by the electromagnetic stirrer 10 (because the magnetic field generated by the iron core 15 with its axis of curvature rotates around a circular arc of a certain radius, the alloy elements in the molten alloy metal are evenly distributed, and the cooling process gradually crystallizes and refines the grains, thus meeting the requirements for non-ferrous metal ingot casting). After leaving the electromagnetic stirrer 10, the molten alloy metal enters the crystallization section. A cooling device (not shown in the figure) is installed at a corresponding position outside the crystallization wheel 1 in the crystallization section. Typically, the cooling device includes several nozzles pointing towards the crystallization wheel 1, which spray coolant onto the crystallization wheel 1. Because the molten alloy metal is stirred by the electromagnetic stirrer 10 at the pouring port 13, its alloy element distribution is more uniform compared to existing technologies.

[0023] It should be noted that the terms "connection" and "setting" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "connection" or "setting" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "connection" and "setting," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in a sequence other than those illustrated or described herein. Moreover, for the foregoing embodiments, for the sake of simplicity, they are all described as a series of actions; however, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Secondly, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to this application.

[0024] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An electromagnetic stirrer core, characterized by, The iron core (15) includes an arc-shaped iron core (15) which is mounted on an electromagnetic stirrer (10). The iron core (15) includes multiple sets of iron plates (18). The circular holes (17) in the same set of iron plates (18) are in the same position; the circular holes (17) in different sets of iron plates (18) are in different positions.

2. An electromagnetic stirrer core as claimed in claim 1, characterized in that The iron sheet groups (18) are connected by screws (19).

3. An electromagnetic stirrer core as claimed in claim 2, characterized in that Each group of iron sheets (18) consists of multiple iron sheets (16).

4. An electromagnetic stirrer core as claimed in claim 3, characterized in that The iron sheet (16) has multiple round holes (17), and the screw (19) passes through the round holes (17) to fasten the iron sheet (16).

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