Electromagnetic stirring device for reducing white bright belts of steel billets

Abstract

The utility model relates to the field of electromagnetic stirring equipment, in particular to an electromagnetic stirring device for reducing white bright belts of steel billets, which comprises a frame and a mounting ring, the frame is fixedly arranged in a secondary cooling area of a continuous casting machine, a moving mechanism is arranged between the frame and the mounting ring, the mounting ring is sleeved outside the steel billets, and a plurality of moving seats are uniformly arranged in the mounting ring at intervals. First hydraulic telescopic rods are arranged between the moving seats and the mounting ring, electromagnetic stirrers are mounted on the moving seats, and a water cooling unit is arranged in the mounting ring. The position of the electromagnetic stirrer is changed through the moving mechanism and the moving seat, the electromagnetic stirring effect on steel billets is changed, the electromagnetic stirring strength is changed by changing the power of the electromagnetic stirrer, white bright bands generated due to excessive electromagnetic stirring are reduced, and the internal quality of the steel billets is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electromagnetic stirring equipment field especially relates to a kind of electromagnetic stirring device reducing steel billet white bright band. BACKGROUND

[0002] Continuous casting machine is a kind of production equipment which continuously casts high-temperature molten steel into casting billet with certain cross-sectional shape and size specification. It pours liquid metal into condensing equipment, and pulls out casting piece of specific length and shape from the other end of the equipment under the condition of metal partial condensation. During the process of solidification of liquid metal in continuous casting machine, electromagnetic stirring device is used to stir the inside of liquid metal, so as to improve the solidification process of casting billet and obtain good casting billet quality.

[0003] However, if electromagnetic stirring is excessive, white bright band may occur. The formation of white bright band is related to the change of solute distribution during solidification. When the steel billet enters and leaves the electromagnetic stirring zone, the change of solidification speed will cause the change of solute distribution curve shape, thereby forming white bright band with negative segregation first and then positive segregation. Therefore, in order to avoid excessive electromagnetic stirring intensity, it is particularly necessary to develop an electromagnetic stirring device which can adjust the position and stirring intensity of electromagnetic stirring to reduce steel billet white bright band. SUMMARY

[0004] The utility model discloses a kind of electromagnetic stirring devices reducing steel billet white bright band, with the advantage that the position and stirring intensity of electromagnetic stirring can be adjusted, thereby reducing steel billet white bright band.

[0005] The technical scheme adopted is as follows:

[0006] An electromagnetic stirring device reducing steel billet white bright band, comprising a rack and a mounting ring, the rack is fixedly arranged in the secondary cooling zone of a continuous casting machine, a moving mechanism is arranged between the rack and the mounting ring, the mounting ring is sleeved on the outside of the steel billet, a plurality of moving seats are uniformly and intervaliy arranged in the mounting ring, a first hydraulic telescopic rod is arranged between the moving seat and the mounting ring, an electromagnetic stirrer is mounted on the moving seat, and a water cooling unit is arranged in the mounting ring.

[0007] Preferably, the moving mechanism comprises a plurality of second hydraulic telescopic rods, and the two ends of the second hydraulic telescopic rods are fixedly connected with the rack and the mounting ring.

[0008] Preferably, a heat insulation plate corresponding to the second hydraulic telescopic rod is fixedly arranged on the mounting ring.

[0009] Preferably, a heat insulation plate is arranged on the inner wall of the mounting ring.

[0010] Preferably, the water cooling unit comprises a plurality of cooling rings, each cooling ring is provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are connected with a water source.

[0011] Compared with the prior art, the beneficial effects are that:

[0012] The utility model discloses a position of the installation ring is changed through the moving mechanism, the position of electromagnetic stirrer on the billet is changed, and the distance of the electromagnetic stirrer from the billet is changed through the movement of the moving seat in the installation ring, the effect of the electromagnetic stirring to the billet is changed, and the intensity of the electromagnetic stirring is changed through the change of the power of the electromagnetic stirrer, thereby reducing the white band caused by the excessive electromagnetic stirring, and improving the internal quality of the billet. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a kind of electromagnetic stirring device for reducing the white band of billet of the utility model three-dimensional structure schematic view,

[0014] Fig. 2 is a kind of electromagnetic stirring device for reducing the white band of billet of the utility model side view structure schematic view,

[0015] In the drawing: 1, rack;2, installation ring;3, moving mechanism;4, heat insulating plate;5, moving seat;6, first hydraulic telescopic rod;7, electromagnetic stirrer;8, cooling ring;9, water inlet pipe;10, water outlet pipe. DETAILED DESCRIPTION

[0016] The utility model will be further described in combination with specific embodiment, as Figs. 1-2 As shown in the figure:

[0017] Example 1: a kind of electromagnetic stirring device for reducing the white band of billet, including rack 1 and installation ring 2, rack 1 is fixedly arranged in continuous casting machine second cooling zone, moving mechanism 3 is arranged between rack 1 and installation ring 2, installation ring 2 is set on the outside of billet, moving mechanism 3 acts to change the position of installation ring 2, installation ring 2 is set on the outside of billet.

[0018] Multiple moving seats 5 are evenly and interval arranged in installation ring 2, first hydraulic telescopic rod 6 is arranged between moving seat 5 and installation ring 2, corresponding moving seat 5 is moved by the telescopic drive of first hydraulic telescopic rod 6, and electromagnetic stirrer 7 is installed on moving seat 5, and the distance between electromagnetic stirrer 7 and billet is adjusted by the movement of first hydraulic telescopic rod 6, water cooling unit is arranged in installation ring 2, and the inside of installation ring 2 is cooled, to avoid the temperature of the inside of installation ring 2 being too high due to being too close to billet, and damaging electromagnetic stirrer 7 and first hydraulic telescopic rod 6.

[0019] The position of the mounting ring 2 is changed by the moving mechanism 3, the position of the electromagnetic stirrer 7 on the billet is changed, the moving seat 5 moves in the mounting ring 2 to change the distance of the electromagnetic stirrer 7 from the billet, the effect of the electromagnetic stirring on the billet is changed, and the strength of the electromagnetic stirring is changed by changing the power of the electromagnetic stirrer 7, and the white band caused by excessive electromagnetic stirring is reduced.

[0020] In embodiment 2, the electromagnetic stirring device for reducing the white band of the billet comprises a rack 1 and a mounting ring 2, the rack 1 is fixedly arranged in the secondary cooling zone of the continuous casting machine, a moving mechanism 3 is arranged between the rack 1 and the mounting ring 2, the moving mechanism 3 comprises a plurality of second hydraulic telescopic rods, both ends of the second hydraulic telescopic rods are fixedly connected with the rack 1 and the mounting ring 2, and the inner wall of the mounting ring 2 is provided with heat insulation plates 4.

[0021] The mounting ring 2 is sleeved on the outside of the billet, the position of the mounting ring 2 is changed by the action of the moving mechanism 3, the mounting ring 2 is sleeved on the outside of the billet, the mounting ring 2 is fixedly provided with the heat insulation plates 4 corresponding to the second hydraulic telescopic rods, the heat insulation plates 4 reduce the damage of the high temperature of the billet to the second hydraulic telescopic rods, and the service life of the heat insulation plates 4 is prolonged.

[0022] A plurality of moving seats 5 are uniformly and interval ly arranged in the mounting ring 2, a first hydraulic telescopic rod 6 is arranged between the moving seat 5 and the mounting ring 2, the first hydraulic telescopic rod 6 drives the corresponding moving seat 5 to move in extension and retraction, the moving seat 5 is provided with an electromagnetic stirrer 7, the distance between the electromagnetic stirrer 7 and the billet is adjusted by the movement of the first hydraulic telescopic rod 6, a water cooling unit is arranged in the mounting ring 2, the water cooling unit comprises a plurality of cooling rings 8, the cooling ring 8 is provided with a water inlet pipe 9 and a water outlet pipe 10, the water inlet pipe 9 and the water outlet pipe 10 are connected with a water source, the water cooling unit cools the inside of the mounting ring 2, avoids that the inside temperature of the mounting ring 2 is too high due to being too close to the billet, and damages the electromagnetic stirrer 7 and the first hydraulic telescopic rod 6.

[0023] The specific working process is as follows: when the billet in the secondary cooling zone is stirred, in order to reduce the white band, a sample of the billet is taken before batch production of the billet, the position of the mounting ring 2 is changed by the moving mechanism 3, the position of the electromagnetic stirrer 7 on the billet is changed, the moving seat 5 moves in the mounting ring 2 to change the distance of the electromagnetic stirrer 7 from the billet, the effect of the electromagnetic stirring on the billet is changed, the strength of the electromagnetic stirring is changed by changing the power of the electromagnetic stirrer 7, the white band caused by excessive electromagnetic stirring is reduced, the best position of the mounting ring 2 and the position of the moving seat 5 are obtained, and the generation of the white band is reduced in the subsequent batch production, and the internal quality of the billet is improved.

[0024] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. An electromagnetic stirring device for reducing white bands in billets, characterized by: The utility model relates to a movable electromagnetic stirring device for continuous casting machine, including frame (1) and installation ring (2), frame (1) is fixedly arranged in continuous casting machine secondary cooling zone, and the moving mechanism (3) is arranged between frame (1) and installation ring (2), installation ring (2) is set on the outside of billet, and a plurality of moving seat (5) are uniformly arranged in installation ring (2) inside, and the first hydraulic telescopic rod (6) is arranged between moving seat (5) and installation ring (2), and the electromagnetic stirrer (7) is installed on moving seat (5), and water cooling unit is arranged in installation ring (2).

2. An electromagnetic stirring device for reducing white bands in billets as claimed in claim 1, characterized in that: The moving mechanism (3) includes a plurality of second hydraulic telescopic rods, both ends of the second hydraulic telescopic rods are fixedly connected with the frame (1) and the installation ring (2).

3. An electromagnetic stirring device for reducing white bands in billets as claimed in claim 2, wherein: The installation ring (2) is fixedly provided with a heat insulation plate (4) corresponding to the second hydraulic telescopic rod.

4. The electromagnetic stirring device for reducing white bands in billets as claimed in claim 1, wherein: The inner wall of the installation ring (2) is provided with a heat insulation plate (4).

5. The electromagnetic stirring device for reducing white bands in billets as claimed in claim 1, wherein: The water cooling unit includes a plurality of cooling rings (8), each of the cooling rings (8) is provided with an inlet pipe (9) and an outlet pipe (10), and the inlet pipe (9) and the outlet pipe (10) are connected with a water source.

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