Water-cooling gap bridge for electromagnetic stirring based on casting flow of continuous casting machine

Abstract

The utility model discloses a water-cooling gap bridge for electromagnetic stirring based on casting flow of a continuous casting machine, and relates to the technical field of continuous casting. The bridge comprises a set of end supports and a bridge body, each end support comprises a transverse pipe, supporting legs are fixed to the bottoms of the two ends of the transverse pipe, mounting bases are fixed to the bottom ends of the supporting legs, a connecting edge is fixed to the upper portion of the outer side between the two supporting legs, the bridge body comprises a bridge floor, a water cooling chamber is fixed to the bottom of the bridge floor, and bent sections matched with the transverse pipes are arranged at the two ends of the bridge body. And vertical edges exceeding the bent sections are arranged at the two ends of the bridge floor. The novel gap bridge is designed, the water cooling cavity is formed in the gap bridge, the gap bridge can be subjected to water cooling through circulating cooling water, the deformation influence of high temperature on the gap bridge is reduced, the process safety is ensured, and a series of accident influences caused by water leakage due to the fact that a dummy bar collides with the electromagnetic stirring body due to deformation are avoided; and the scratch influence of deformation on the casting blank is reduced, and the service life and the strength of the gap bridge can be greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to continuous casting technical field, especially, relate to a kind of water-cooled overbridge for electromagnetic stirring based on continuous casting machine casting flow. BACKGROUND

[0002] Casting flow electromagnetic stirring can improve the quality of the internal and surface of casting blank, combined with crystallizer electromagnetic stirring can greatly improve the quality of continuous casting blank and quality, installation position is at two cooling second section, main effect is in the grain refinement of casting blank, it can make the columnar crystal of casting blank upper part be broken by flowing molten steel, and generate a large number of equiaxed crystal, so as to expand the range of equiaxed crystal, reduce or eliminate the phenomenon of center segregation, center shrinkage.

[0003] However, the overbridge installed inside the casting flow electromagnetic stirring is deformed due to long-time high-temperature roasting, and is often hung by the head of the dummy bar during the process of sending and guiding the ingot, which will collide with the inner wall of the electromagnetic stirring body or the edge of the body inlet and outlet after offset, resulting in a large amount of water leakage, and even burn out the coil and affect the quality of the casting blank when the accident is expanded over time. At the same time, when the hot blank passes through this place after pouring, the deformed overbridge will scratch the hot blank, causing a large number of adverse consequences for the later grinding work.

[0004] If the method of removing the overbridge to eliminate the hidden danger is adopted, the head of the dummy bar will sink (spring steel type dummy bar is in a flexible state) during the process of sending and guiding the ingot after removal, and will collide with the electromagnetic stirring body, thereby causing water leakage and affecting the cooling effect of the electromagnetic stirring coil. When the accident is expanded over time, the electromagnetic stirring coil is burned out and the power is off, thereby affecting the large batch of scrap casting blank, so the overbridge spare parts need to be replaced, thereby affecting the maintenance cost and production process. SUMMARY

[0005] The utility model discloses a kind of water-cooled overbridges for electromagnetic stirring based on continuous casting machine casting flow, by designing new overbridge, it is provided with water-cooling cavity, can be water-cooled to overbridge by circulating cooling water, reduce the influence of deformation caused by high temperature to overbridge, ensure the process safety, avoid a series of accidents caused by deformation to cause dummy bar to impact electromagnetic stirring body and then produce water leakage,And reduce the scratch effect caused by deformation to casting blank, can greatly improve the service life and strength of overbridge.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0007] The utility model discloses a kind of water-cooled overbridges for electromagnetic stirring based on continuous casting machine casting flow, including a group of end supports and bridge body;

[0008] The end support includes horizontal pipe, the bottom of the two ends of the horizontal pipe is fixed with support leg, the bottom of the support leg is fixed with mounting seat, and the outer side of the two support legs is fixed with connecting edge above.

[0009] The bridge body comprises a bridge deck, a water cooling chamber is fixed at the bottom of the bridge deck, and bending sections matched with the horizontal pipes are arranged at the two ends of the bridge deck; vertical edges beyond the bending sections are arranged at the two ends of the bridge deck;

[0010] The bridge body is movably arranged at the top of the horizontal pipes of the two end supports through the two bending sections, and the vertical edges are arranged in parallel outside the connecting edges and are connected with each other through fasteners;

[0011] Water inlet pipes and water outlet pipes are arranged outside the bending sections at the two ends of the bridge body respectively.

[0012] Further, a plurality of partition plates are arranged linearly in the water cooling chamber, and the water cooling chamber is divided into a plurality of cooling cavities; the cooling cavities are parallel to the length direction of the water cooling chamber; and a plurality of shunt pipes are arranged in the bending sections at the two ends of the bridge body, and a plurality of shunt openings are arranged on the shunt pipes and communicated with the plurality of cooling cavities.

[0013] Further, the water inlet pipe is arranged at the bending section at the front end of one side plate, the water outlet pipe is arranged at the bending section at the tail end of the other side plate, and the water inlet pipe and the water outlet pipe are communicated with the two shunt pipe ends respectively.

[0014] Further, the supporting leg comprises a vertical plate body, the vertical plate body is fixed between the horizontal pipe and the mounting seat, reinforcing ribs are arranged at the two sides of the vertical plate body, and the top edges and bottom edges of the reinforcing ribs are connected with the horizontal pipe and the mounting seat respectively.

[0015] Further, the two side edges of the bridge deck exceed the two side edges of the water cooling chamber and form protective edges, and a wear-resistant plating layer is arranged on the bridge deck.

[0016] Further, a gasket is arranged between the vertical edge and the connecting edge, and the fastener penetrates through the gasket.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model discloses a novel bridge, which has a water cooling cavity, and the bridge can be water-cooled through circulating cooling water, thereby reducing the deformation influence of high temperature on the bridge, ensuring the process safety, avoiding a series of accidents caused by the water leakage of the electromagnetic stirring body due to the impact of the dummy bar, reducing the scratch of the cast blank caused by deformation, and greatly improving the service life and strength of the bridge.

[0019] 2. The utility model discloses a novel bridge made of stainless steel material, which prevents rust phenomenon after the bridge is used, and a wear-resistant plating layer is arranged on the bridge deck to improve the surface quality of the bridge deck, thereby improving the service life and avoiding the scratch of the cast blank.

[0020] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an electromagnetic stirring water-cooled bridge based on the casting flow of a continuous casting machine according to this utility model;

[0023] Figure 2 This is a structural sectional view of the water-cooled chamber;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1-End bracket, 2-Bridge body, 3-Inlet pipe, 4-Drain pipe, 101-Horizontal pipe, 102-Outrigger, 103-Mounting base, 104-Connecting edge, 105-Vertical plate, 106-Reinforcing rib, 107-Plate, 201-Bridge deck, 202-Water-cooled chamber, 203-Bending section, 204-Vertical edge, 205-Fastener, 206-Separator plate, 207-Diverter pipe, 208-Diverter port. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-2 As shown, this utility model is an electromagnetic stirring water-cooled bridge based on the casting flow of a continuous casting machine, including a set of end supports 1 and a bridge body 2;

[0028] The end support 1 includes a horizontal tube 101, with legs 102 fixed at the bottom of both ends of the horizontal tube 101, mounting bases 103 fixed at the bottom of the legs 102, and a connecting edge 104 fixed above the outer side between the two legs 102.

[0029] The bridge body 2 includes a bridge deck 201, a water-cooled chamber 202 fixed at the bottom of the bridge deck 201, and a bending section 203 that cooperates with the horizontal pipe 101 at both ends of the bridge body 2. The bridge deck 201 also has a vertical side 204 that extends beyond the bending section 203 at both ends.

[0030] The bridge body 2 is movably mounted on the top of the horizontal tube 101 of the support 1 at both ends via two bent sections 203, and the vertical side 204 is parallel to the outside of the connecting side 104 and is connected to each other by fasteners 205.

[0031] Water inlet pipe 3 and drainage pipe 4 are respectively installed on the outer side of the bending section 203 at both ends of the bridge body 2.

[0032] Among them, such as Figure 2 As shown, the water-cooled chamber 202 is linearly provided with several partition plates 206 and divided into several cooling chambers. The cooling chambers are parallel to the length direction of the water-cooled chamber 202. The bending sections 203 at both ends of the bridge body 2 are provided with diversion pipes 207. The diversion pipes 207 are provided with diversion ports 208 that communicate with the cooling chambers.

[0033] Among them, such as Figures 1-2 As shown, the water inlet pipe 3 is located at the bend section 203 at the front end of one side plate, and the drain pipe 4 is located at the bend section 203 at the rear end of the other side plate. The water inlet pipe 3 and the drain pipe 4 are respectively connected to the ends of the two branch pipes 207.

[0034] Among them, such as Figure 1 As shown, the support leg 102 includes a vertical plate 105, which is fixed between the horizontal tube 101 and the mounting base 103. Both sides of the vertical plate 105 are provided with reinforcing ribs 106, and the top and bottom edges of the reinforcing ribs 106 are connected to the horizontal tube 101 and the mounting base 103, respectively.

[0035] Among them, such as Figure 1 As shown, the two sides of the bridge deck 201 extend beyond the two sides of the water-cooled chamber 202 to form protective edges, and the bridge deck 201 is provided with a wear-resistant coating.

[0036] Among them, such as Figure 1 As shown, a pad 107 is provided between the vertical side 204 and the connecting side 104, and a fastener 205 passes through the pad 107.

[0037] Among them, the bridge deck 201, the partition plate 206 and the plates that make up the water-cooled chamber 202 are all stainless steel plates, and the diversion pipe 207 is a stainless steel pipe body. The stainless steel material is used to prevent rust from occurring after a long period of water flow.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A water-cooled bridge for electromagnetic stirring based on a continuous-casting strand, characterized in that: It comprises a set of end supports (1) and a bridge (2); The end support (1) comprises a cross pipe (101), the bottom of both ends of the cross pipe (101) is fixed with a support leg (102), the bottom end of the support leg (102) is fixed with a mounting seat (103), the outer side above the two support legs (102) is fixed with a connecting edge (104); The bridge (2) comprises a bridge surface (201), the bottom of the bridge surface (201) is fixed with a water cooling chamber (202), both ends of the bridge (2) are provided with a bending section (203) matched with the cross pipe (101), both ends of the bridge surface (201) are provided with a vertical edge (204) beyond the bending section (203); The bridge (2) is movably arranged on the top of the cross pipe (101) of the end support (1) through the two bending sections (203), the vertical edges (204) are arranged in parallel on the outer side of the connecting edge (104) and are connected with each other through fasteners (205); The outer side of the bending section (203) at both ends of the bridge (2) is respectively provided with a water inlet pipe (3) and a drain pipe (4).

2. The water-cooled bridge for electromagnetic stirring based on a continuous casting strand according to claim 1, characterized in that, A plurality of partition plates (206) are linearly arranged in the water cooling chamber (202) and are divided into a plurality of cooling cavities, the cooling cavities are parallel to the length direction of the water cooling chamber (202), the bending section (203) at both ends of the bridge (2) is provided with a shunt pipe (207), and the shunt pipe (207) is provided with a shunt opening (208) communicated with the plurality of cooling cavities.

3. The water-cooled bridge for electromagnetic stirring based on a continuous casting strand according to claim 2, characterized in that, The water inlet pipe (3) is arranged at the bending section (203) of the front end of one side plate, the drain pipe (4) is arranged at the bending section (203) of the tail end of the other side plate, and the water inlet pipe (3) and the drain pipe (4) are respectively communicated with the end portions of the two shunt pipes (207).

4. The water-cooled bridge for electromagnetic stirring based on a continuous casting machine strand according to claim 1, characterized in that, The support leg (102) comprises a vertical plate body (105), the vertical plate body (105) is fixed between the cross pipe (101) and the mounting seat (103), the vertical plate body (105) is provided with a reinforcing rib (106) on both sides, and the top edge and the bottom edge of the reinforcing rib (106) are connected with the cross pipe (101) and the mounting seat (103) respectively.

5. The water-cooled bridge for electromagnetic stirring based on a continuous casting machine strand according to claim 1, characterized in that, The side edges of the bridge surface (201) respectively exceed the side edges of the water cooling chamber (202) and form protective edges, and the bridge surface (201) is provided with a wear-resistant plating layer.

6. The water-cooled bridge for electromagnetic stirring based on a continuous casting machine strand according to claim 1, characterized in that, The vertical edge (204) and the connecting edge (104) are provided with a gasket (107), and the fastener (205) penetrates the gasket (107).

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