Continuous casting machine with roller type electromagnetic stirrer

Abstract

The utility model relates to the technical field of continuous casting machines, and discloses a continuous casting machine with a roller type electromagnetic stirrer, which comprises a continuous casting machine, the top of the continuous casting machine is provided with a feed inlet for feeding, and a driving end of the roller type electromagnetic stirrer is arranged behind the feed inlet and on the top surface of the continuous casting machine. The device is characterized in that a through hole is formed in the top face of the continuous casting machine and located under the driving end, the lower portion of the through hole is communicated with a smelting furnace arranged on the inner side of the continuous casting machine, and a stirring structure used for enabling molten steel in the smelting furnace to move in multiple directions is arranged on the inner side of the through hole and located above the smelting furnace. By means of the design of the connecting rod wave opening, the connecting rod can pound up and down during autorotation, the connecting rod is fixedly connected with the stirring roller, so that the stirring roller is driven to rotate in the smelting furnace, and when the stirring roller autorotates, molten steel in the smelting furnace is pounded up and down, segregation is eliminated in multiple directions, and shrinkage cavities are avoided. And the beneficial effect that the smelting effect can be improved through multi-direction stirring when molten steel is stirred is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous casting machines, in particular to a continuous casting machine with a roller type electromagnetic stirrer. Background Art

[0002] The continuous casting machine is the main equipment of the continuous casting process in the modern metallurgical industry. Its structural characteristics and working principles not only determine the working efficiency and production cost of the continuous casting machine, but also directly affect the product quality. At present, roller electromagnetic stirring has become an indispensable process for efficient continuous casting and high-quality continuous casting. With the help of electromagnetic force, the movement of unsolidified molten steel in the continuous casting billet is strengthened, thereby improving the flow, heat transfer and migration conditions of the molten steel during solidification. It is conducive to the floating of bubbles and slag inclusions, the elimination of overheating, the inhibition of the growth of columnar crystals, the promotion of the formation of equiaxed crystals, and the basic elimination of center segregation and shrinkage cavities. It is one of the effective measures to improve the internal quality of the billet.

[0003] After searching, it was found that the prior art publication number is CN 208929149 U, which is an ultra-wide and thin-ratio continuous casting machine with a roller-type electromagnetic stirring device, including a continuous casting machine body, a sector section arranged in the continuous casting machine body, an electromagnetic stirring device is arranged in the sector section, and the electromagnetic stirring device includes two pairs of electromagnetic stirring rollers, the two pairs of electromagnetic stirring rollers are respectively installed at the inlet and outlet of the sector section, both ends of the continuous casting machine body in the width direction are fixedly connected with a single bearing seat, a sealing device is arranged at the connection between the double bearing seat and the electromagnetic stirring roller, the roller diameter of the electromagnetic stirring roller is set to Φ240mm, and a plurality of support rollers are arranged between the two pairs of electromagnetic stirring rollers, and the support rollers are rotatably connected to the continuous casting machine body; this ultra-wide and thin-ratio continuous casting machine with a roller-type electromagnetic stirring device can maximize the metallurgical effect of electromagnetic stirring and meet the production of varieties with extremely high requirements for the internal quality of ultra-wide and thin-ratio ingots.

[0004] The above technical solution improves the metallurgical effect of electromagnetic stirring by stirring in four directions through two pairs of electromagnetic stirring rollers. However, the two pairs of four stirring rollers require more electromagnetic stirrers and consume more energy. At the same time, the two pairs of stirring rollers are respectively arranged at the inlet and outlet, and the molten steel inside the continuous casting machine is not directly stirred to eliminate bubbles and slag inclusions. Moreover, even if the four stirring rollers rotate in multiple directions, they can only move in a circle, and cannot stir in multiple directions to eliminate segregation and avoid shrinkage holes. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a continuous casting machine with a roller electromagnetic stirrer, which has the advantages of being more energy-efficient in stirring molten steel inside the continuous casting machine and being able to stir the molten steel in multiple directions to improve the smelting effect, thereby solving the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a continuous casting machine with a roller electromagnetic stirrer, comprising a continuous casting machine, a feeding port for loading is provided on the top of the continuous casting machine, a driving end of a stick-type electromagnetic stirrer is arranged behind the feeding port and on the top surface of the continuous casting machine, and it is characterized in that a through hole is provided on the top surface of the continuous casting machine and directly below the driving end, the bottom of the through hole is connected to a furnace arranged on the inner side of the continuous casting machine, and a stirring structure for making the molten steel in the furnace move in multiple directions is provided on the inner side of the through hole and above the furnace.

[0009] As a preferred technical solution of the utility model, the stirring structure includes a connecting rod connected to the output interface of the driving end, the connecting rod passes through the inner side of the through hole, and the side wall of the connecting rod is provided with an annular wave opening at the through hole.

[0010] As an optimal technical solution of the utility model, the inner side of the annular wave mouth is slidably connected to a limit card, and the tail end of the limit card is connected to a fixed ring fixedly installed on the inner wall of the through hole. The inner side of the fixed ring wraps the connecting rod and the outer side fits with the inner wall of the through hole.

[0011] As a preferred technical solution of the utility model, the connecting part between the top of the connecting rod and the output interface of the driving end also includes a driving rod, and a piston hole with half of its height is opened on the top surface of the connecting rod, and the piston hole is connected to the piston of the driving rod.

[0012] As a preferred technical solution of the utility model, a limit opening is opened at the bottom of the piston hole, and a slider with a diameter larger than the piston hole is slidably connected to the inner side of the limit opening, and the top surface of the slider is fixedly connected to the driving rod. The slider, driving rod and limit opening cooperate to limit the connecting rod to rotate synchronously when moving up and down.

[0013] As a preferred technical solution of the utility model, the bottom of the connecting rod is located inside the furnace and is fixedly connected to a stirring roller, and the stirring roller is made of nickel gold.

[0014] Compared with the prior art, the utility model provides a continuous casting machine with a roller-type electromagnetic stirrer, which has the following beneficial effects:

[0015] 1. The utility model drives the driving rod to rotate together through the driving end, and the driving rod drives the connecting rod. The wave mouth opened by the connecting rod contacts the limit card when rotating inside the fixed ring. Since the limit card is fixed to the fixed ring and cannot move, the wave mouth carrier, that is, the connecting rod, starts to move downward, and as the connecting rod continues to move, the raised part of the wave mouth continues to contact the limit card, which will cause the connecting rod to move downward. Since the bottom of the connecting rod is also connected to the stirring roller inside the furnace, the stirring roller will be driven to rotate together. When the stirring roller rotates, the molten steel inside the furnace is stirred up and down to eliminate segregation in multiple directions and avoid shrinkage holes. A single driving end is used to achieve multi-directional stirring of the stirring roller, which not only has a better stirring effect but also has lower energy consumption than the same period last year, thereby achieving a beneficial effect of more energy-saving stirring of molten steel inside the continuous casting machine.

[0016] 2. The utility model uses the design of the connecting rod wave mouth to enable it to stir up and down when it rotates, and the connecting rod is fixedly connected to the stirring roller, thereby driving the stirring roller to rotate inside the furnace. When the stirring roller rotates, the molten steel inside the furnace is stirred up and down to eliminate segregation in multiple directions and avoid shrinkage holes, thereby achieving the beneficial effect of stirring the molten steel in multiple directions to improve the smelting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the front section of the furnace structure of the utility model;

[0020] Figure 4 It is a front cross-sectional schematic diagram of the connecting rod structure of the utility model;

[0021] Figure 5 It is an exploded schematic diagram of the connecting rod structure of the utility model.

[0022] Among them: 1. continuous casting machine; 101. feed port; 102. drive end; 2. through hole; 3. connecting rod; 301. wave mouth; 3011. drive rod; 302. piston hole; 303. limit mouth; 304. slider; 4. limit card; 401. fixed ring; 5. furnace; 6. stirring roller. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-5 A continuous casting machine with a roller electromagnetic stirrer comprises a continuous casting machine 1, a feeding port 101 for loading is provided on the top of the continuous casting machine 1, a driving end 102 of a roller type electromagnetic stirrer is arranged behind the feeding port 101 and on the top surface of the continuous casting machine 1, and the invention is characterized in that a through hole 2 is provided on the top surface of the continuous casting machine 1 and directly below the driving end 102, a furnace 5 provided on the inner side of the continuous casting machine 1 is connected to the through hole 2 below, and a stirring structure for making the molten steel in the furnace 5 move in multiple directions is provided on the inner side of the through hole 2 and above the furnace 5.

[0027] Furthermore, the feed port 101 opened at the front end of the top face of the continuous casting machine 1 is connected to the furnace 5. When continuous casting of steel is required, the feed port 101 is opened to pour molten steel into it, or steel ingots are added and the furnace 5 is directly heated to melt into molten steel. The furnace material is consistent with the graphite crucible material, which is an existing material and does not belong to the protection object required by this application, so it is not introduced here.

[0028] Furthermore, by starting the driving end 102 of the stick-type electromagnetic stirrer installed on the top of the continuous casting machine 1, it drives the driving rod 3011 to rotate together. Since the slider 304 connected to the bottom of the driving rod 3011 is slidably connected to the limit opening 303, and the slider 304 and the limit opening 303 are engaged and will not move when the driving rod 3011 moves in a circle, the slider 304 drives the connecting rod 3 to rotate together.

[0029] Furthermore, the connecting rod 3 is driven to rotate after the driving end 102 is started, so that the wave mouth 301 opened by itself starts to move in a circular motion. At this time, the wave mouth 301 contacts the limit card 4 when rotating inside the fixed ring 401. Since the limit card 4 is fixed to the fixed ring 401 and cannot move, the carrier of the wave mouth 301, that is, the connecting rod 3, starts to move downward, and as the connecting rod 3 continues to move, the raised part of the wave mouth 301 continues to contact the limit card, which will cause the connecting rod 3 to move downward. Since the bottom of the connecting rod 3 is also connected to the stirring roller 6 located inside the furnace 5, the stirring roller 6 will be driven to rotate together.

[0030] Furthermore, the stirring roller 6 is fixed to the connecting rod 3, so when the connecting rod 3 rotates and moves up and down in multiple directions, the stirring roller 6 will be synchronously driven to rotate, and the molten steel inside the furnace 5 will be stirred up and down during the rotation to eliminate segregation in multiple directions and avoid shrinkage holes.

[0031] Furthermore, the stirring roller is made of nickel-gold and is resistant to high temperatures, and its melting point is higher than two thousand degrees, so it will not melt due to stirring the molten steel.

[0032] When in use, the feed port 101 is opened to pour molten steel therein, or steel ingots are added and the furnace 5 is directly heated to melt into molten steel, and the driving end 102 of the rod-type electromagnetic stirrer installed on the top of the continuous casting machine 1 is started to drive the driving rod 3011 to rotate together, and the driving rod 3011 drives the connecting rod 3, and the wave mouth 301 opened by the connecting rod 3 contacts the limit card 4 when rotating inside the fixed ring 401. Since the limit card 4 is fixed to the fixed ring 401 and cannot move, the wave mouth 301 carrier, that is, the connecting rod 3, begins to move downward, and as the connecting rod 3 continues to move, the raised part of the wave mouth 301 continues to contact the limit card, which will cause the connecting rod 3 to move downward. Since the bottom of the connecting rod 3 is also connected to the stirring roller 6 located inside the furnace 5, it will drive the stirring roller 6 to rotate together. When the stirring roller 6 rotates, the molten steel inside the furnace 5 is stirred up and down to eliminate segregation in multiple directions and avoid shrinkage holes.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous casting machine with a roller electromagnetic stirrer, comprising a continuous casting machine (1), wherein a feeding port (101) for feeding materials is provided on the top of the continuous casting machine (1), and a driving end (102) of a roller electromagnetic stirrer is arranged behind the feeding port (101) and on the top surface of the continuous casting machine (1), characterized in that: A through hole (2) is provided on the top surface of the continuous casting machine (1) and is located directly below the driving end (102); the through hole (2) is connected to a furnace (5) provided on the inner side of the continuous casting machine (1); and a stirring structure for causing the molten steel in the furnace (5) to move in multiple directions is provided on the inner side of the through hole (2) and above the furnace (5).

2. A continuous casting machine with a roller electromagnetic stirrer according to claim 1, characterized in that: The stirring structure comprises a connecting rod (3) connected to an output interface of a driving end (102), the connecting rod (3) passing through the inner side of the through hole (2), and a side wall of the connecting rod (3) is provided with an annular wave opening (301) at the through hole (2).

3. A continuous casting machine with a roller electromagnetic stirrer according to claim 2, characterized in that: The inner side of the annular wave mouth (301) is slidably connected to a limit card (4), and the tail end of the limit card (4) is connected to a fixing ring (401) fixedly mounted on the inner wall of the through hole (2). The inner side of the fixing ring (401) wraps around the connecting rod (3) and the outer side fits with the inner wall of the through hole (2).

4. A continuous casting machine with a roller type electromagnetic stirrer according to claim 3, characterized in that: The connecting portion between the top of the connecting rod (3) and the output interface of the driving end (102) also includes a driving rod (3011). A piston hole (302) with a height of half of the connecting rod (3) is provided on the top surface of the connecting rod (3). The piston hole (302) is connected to the piston of the driving rod (3011).

5. The continuous casting machine with a roller electromagnetic stirrer according to claim 4, characterized in that: A limiting opening (303) is provided at the bottom of the piston hole (302), a slider (304) having a diameter larger than that of the piston hole (302) is slidably connected to the inner side of the limiting opening (303), the top surface of the slider (304) is fixedly connected to the driving rod (3011), and the slider (304), the driving rod (3011) and the limiting opening (303) cooperate to limit the connecting rod (3) to keep rotating synchronously when moving up and down.

6. The continuous casting machine with a roller electromagnetic stirrer according to claim 5, characterized in that: The bottom of the connecting rod (3) is located inside the melting furnace (5) and is fixedly connected to a stirring roller (6), and the stirring roller (6) is made of nickel gold.

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