Steel casting tundish of vacuum induction furnace

Abstract

The utility model provides a vacuum induction furnace steel pouring tundish which comprises a bearing bottom box, the bearing bottom box comprises a bottom plate, two short edge surrounding plates and two long edge surrounding plates, and the bottom plate is provided with a molten steel inlet and a molten steel outlet; the two long-edge coamings and the two short-edge coamings are vertically fixed to the edge of the bottom plate and define a cuboid structure with an opening in the top with the bottom plate; hollow heat insulation cavities are formed in the two long-edge surrounding plates, trunnion assemblies are arranged on the two long-edge surrounding plates, each trunnion assembly comprises at least two trunnions arranged in the length direction of the cuboid structure, and blocking mechanisms are arranged at the second ends of the trunnions. The blocking mechanism is matched with the trunnion to form a limiting mechanism used for limiting the chain type lifting appliance in the direction perpendicular to the long side coaming; the cover plate is used for covering the top opening of the bearing bottom box, and the cover plate is matched with the top opening of the bearing bottom box in shape.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steel pouring safety technology, especially to a vacuum induction furnace steel pouring tundish. BACKGROUND

[0002] The vacuum induction furnace has very strict control requirements on the quality of finished steel ingot, the internal forming texture uniformity of the finished steel ingot after steel pouring, etc. The tundish is a bridge for realizing the transition of finished molten steel from a vacuum melting crucible to a vacuum pouring steel ingot mold forming steel ingot, and plays a very important role in the whole vacuum induction furnace smelting procedure. After the finished molten steel sampling is qualified, the steel pouring tundish that is baked, heated and kept at a temperature (950℃-1050℃) needs to be hoisted into the tundish room, and after the vacuum is extracted and qualified, the vacuum melting steel molten steel is poured into the steel ingot mold through the tundish. After the steel molten steel in the steel ingot mold is cooled, the emptying and demolding operation is performed to complete the finished steel ingot. The tundish needs to be kept at a high temperature of 950℃ or above during the hoisting and inserting into the tundish room, and the operation frequency is high, which leads to the difficulty of high-temperature hot operation of the smelting workers. How to safely, quickly and efficiently complete the tundish hoisting operation has become a pain point and difficulty of the vacuum induction furnace steel pouring.

[0003] Therefore, the tundish needs to be hoisted and covered with a heat preservation cover plate before it comes out of the baking furnace to reduce the temperature loss of the steel pouring tundish and isolate the high temperature from the hoisting operators to some extent. This process is complicated, and in order to ensure the balance of the tundish during hoisting, the special lifting tool needs to be frequently replaced. The hoisting point of the tundish is arranged in the two side niches, and the operators need to position it before hoisting, which leads to the difficulty of fixing the hoisting and the difficulty of dismounting the lifting tool, and there is a safety hazard. At the same time, the difficulty of fixing the hoisting also leads to the fact that the steel pouring tundish cannot be transported in time, or the temperature of the tundish cannot meet the steel pouring baking temperature due to the long transportation time, which directly affects the steel tapping and the quality of the steel ingot. UTILITY MODEL CONTENTS

[0004] To solve the above problems, the purpose of the utility model is to provide a vacuum induction furnace steel pouring tundish, which is improved in that it comprises

[0005] The bottom box comprises a bottom plate, two short side enclosing plates and two long side enclosing plates. The bottom plate is provided with a molten steel inlet and a molten steel outlet. The two long side enclosing plates are oppositely arranged, and the two short side enclosing plates are oppositely arranged. The two long side enclosing plates and the two short side enclosing plates are both vertically fixed to the edges of the bottom plate and form a rectangular box structure with an open top.

[0006] A hollow heat-insulating cavity is formed inside the two long side panels, and each of the two long side panels is provided with an ear shaft assembly, each of the ear shaft assemblies includes at least two ear shafts arranged along the length direction of the rectangular structure, a first end of each ear shaft is fixed to the long side panel, and a second end protrudes out of the surface of the corresponding long side panel away from the other long side panel, and a blocking mechanism is provided at the second end of the ear shaft, and the blocking mechanism cooperates with the ear shaft to form a limiting mechanism for limiting the chain sling in a direction perpendicular to the long side panel;

[0007] A cover plate is used to cover the top opening of the carrying bottom box, and the cover plate is adapted to the shape of the top opening of the carrying bottom box.

[0008] Furthermore, in the above-mentioned vacuum induction furnace steel casting ladle, the blocking mechanism includes a block formed at the second end of the ear shaft, the block has a circular structure, and the axis of the block coincides with the axis of the ear shaft.

[0009] Furthermore, in the above-mentioned vacuum induction furnace steel pouring tundish, the insulation cavities in the two long side panels are symmetrically distributed relative to the center line of the longitudinal direction of the rectangular structure.

[0010] Furthermore, in the above-mentioned vacuum induction furnace steel pouring tundish, the insulation cavity extends along the length direction of the rectangular structure along one end of the corresponding long side panel to 2 / 3 of its length.

[0011] Furthermore, in the above-mentioned vacuum induction furnace steel pouring tundish, a grid group is provided in the insulation cavity of each of the long side panels, dividing the insulation cavity into multiple sub-insulation cavities along the length direction of the rectangular structure.

[0012] Furthermore, in the above-mentioned vacuum induction furnace steel pouring tundish, each of the ear shafts is detachably connected to the supporting bottom box.

[0013] Furthermore, in the above-mentioned vacuum induction furnace steel casting ladle, a group of side edges of the cover plate are provided with downwardly bent buckle edges, and the upper edge of the inner plate of the insulation cavity is provided with telescopic buckles, and the telescopic buckles can be engaged in the buckle edges.

[0014] Furthermore, in the above-mentioned vacuum induction furnace steel pouring tundish, the cover plate includes an upper iron sheet plate, an intermediate fiber blanket and a lower iron sheet plate.

[0015] Furthermore, in the above-mentioned vacuum induction furnace steel pouring tundish, a group of handles for easy grasping are provided on the cover plate.

[0016] Furthermore, in the above-mentioned vacuum induction furnace steel pouring ladle, the cover plate is a symmetrical folding cover plate.

[0017] The utility model discloses a kind of vacuum induction furnace steel pouring tundish, by setting up light and thin cover plate that can be manually operated, to improve cover plate disassembly and assembly efficiency, save the transfer time of tundish.Meanwhile set up multiple trunnions and reasonably set trunnion position, further improve the hoisting balance and hoisting efficiency of tundish. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of this application provide further understanding of the present utility model, the illustrative embodiments of the present utility model and the description thereof serve to explain the present utility model, and do not constitute undue limitation on the present utility model. Among them:

[0019] Figure 1 A structure schematic view of the vacuum induction furnace steel pouring tundish provided by the utility model is shown in the figure.

[0020] Figure 2 A plan view of the vacuum induction furnace steel pouring tundish provided by the utility model is shown in the figure.

[0021] Figure 3 A front view of the vacuum induction furnace steel pouring tundish provided by the utility model is shown in the figure.

[0022] Figure 4 A cover plate structure schematic view of the vacuum induction furnace steel pouring tundish provided by the utility model is shown in the figure.

[0023] Explanation of reference signs:

[0024] 1, bearing bottom box; 101, bottom plate; 102, long side baffle; 103, short side baffle; 2, heat insulation cavity; 201, grid group; 2011, sub heat insulation cavity; 3, trunnion; 301, stop block; 4, liquid steel inlet; 5, liquid steel outlet; 6, cover plate. DETAILED DESCRIPTION

[0025] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments. Each example is provided by way of explanation of the present utility model rather than limiting the present utility model. In fact, those skilled in the art will clearly understand that modifications and variations can be made in the present utility model without departing from the scope or spirit of the present utility model. For example, features shown as or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is expected that the present utility model includes such modifications and variations falling within the scope of the appended claims and their equivalents.

[0026] In the description of the utility model, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and do not require the utility model to be necessarily constructed and operated in a particular orientation, therefore, cannot be understood as limiting the utility model. The terms "connected", "connected", "provided" used in the utility model should be understood broadly, for example, can be fixed connection, can also be detachable connection, can be directly connected, or indirectly connected through an intermediate component, and the specific meaning of the above terms can be understood according to the specific circumstances for ordinary skilled persons in the art.

[0027] To solve the above problems, the application provides a vacuum induction furnace steel pouring tundish, as shown in Figures 1 to 4 Figure 1 A schematic diagram of the structure of the vacuum induction furnace is provided. Figure 2 A top view of the vacuum induction furnace is provided. Figure 3 A front view of the vacuum induction furnace is provided. Figure 4 A schematic diagram of the structure of the vacuum induction furnace cover plate 6 is provided.

[0028] The vacuum induction furnace steel pouring tundish comprises a bearing bottom box 1, which is provided at the outermost side and is used to provide a mounting position. The bearing bottom box 1 comprises a bottom plate 101, two short side enclosing plates 103 and two long side enclosing plates 102, the two long side enclosing plates 102 are oppositely arranged, and the two short side enclosing plates 103 are oppositely arranged; the two long side enclosing plates 102 and the two short side enclosing plates 103 are both vertically fixed to the edges of the bottom plate 101, that is, the two short side enclosing plates 103 are vertically arranged with the two short sides of the bottom plate 101, the two long side enclosing plates 102 are vertically arranged with the two long sides of the bottom plate 101, and the two long side enclosing plates 102, the two short side enclosing plates 103 and the bottom plate 101 jointly enclose a rectangular parallelepiped structure with an open top.

[0029] In order to facilitate the entry and exit of molten steel into the tundish, a molten steel inlet 4 and a molten steel outlet 5 are arranged on the bottom plate 101. Preferably, the molten steel inlet 4 is arranged at one end of the bottom plate 101, and two molten steel inlets 4 are arranged to improve the efficiency of pouring molten steel into the tundish and minimize the loss of molten steel temperature. The molten steel outlet 5 is arranged at the end of the bottom plate 101 opposite to the molten steel inlet 4, the molten steel outlet 5 is provided with one, and the diameter of the molten steel outlet 5 is greater than that of the molten steel inlet 4.

[0030] ​Further, the hollow heat insulation cavities 2 are formed inside the two long side plates 102, and the trunnion 3 assemblies are arranged on the two long side plates 102 and used for connecting with the chain hangers. Specifically, each trunnion 3 assembly includes at least two trunnions 3 arranged along the length direction of the cuboid structure, and the first end of each trunnion 3 is fixed to the long side plate 102, and the second end of each trunnion 3 protrudes from the long side plate 102 and is arranged in a direction away from the surface of the long side plate 102 facing the other long side plate 102.

[0031] Further, as shown in Figs. 1 and 2, the second end of the trunnion 3 is provided with a blocking mechanism for preventing the chain hanger connected with the trunnion 3 from falling off the trunnion 3. The blocking mechanism cooperates with the trunnion 3 to form a limiting mechanism for limiting the chain hanger in a direction perpendicular to the long side plate 102. Figure 1 and Figure 2 Further, as shown in Figs. 1 and 2, the second end of the trunnion 3 is provided with a blocking mechanism for preventing the chain hanger connected with the trunnion 3 from falling off the trunnion 3. The blocking mechanism cooperates with the trunnion 3 to form a limiting mechanism for limiting the chain hanger in a direction perpendicular to the long side plate 102.

[0032] In some embodiments, the blocking mechanism includes a stopper 301 formed at the second end of the trunnion 3, and the stopper 301 has a circular structure and its axis coincides with the axis of the trunnion 3 to ensure the installation position of the stopper 301 relative to the trunnion 3, so that the stopper 301 can better limit the chain hanger hung on the trunnion 3.

[0033] Further, the heat insulation cavities 2 in the two long side plates 102 are symmetrically distributed relative to the center line of the length direction of the cuboid structure.

[0034] Further, it is preferred that the heat insulation cavities 2 extend to 2 / 3 of the length of the corresponding long side plate 102 along the length direction of the cuboid structure. The arrangement of the heat insulation cavities 2 can provide heat preservation for the molten steel in the tundish. In addition, the arrangement of the heat insulation cavities 2 can provide an installation position for the first end of the trunnion 3, avoiding the direct contact of the first end of the trunnion 3 with the molten steel in the tundish, avoiding the high temperature on the trunnion 3, and facilitating the personnel to operate the chain hanger to be hung on the trunnion 3.

[0035] Further, the heat insulation cavities 2 in the two long side plates 102 are symmetrically distributed relative to the center line of the length direction of the cuboid structure.

[0036] In some embodiments, each trunnion 3 is detachably connected with the load-bearing box 1, so as to facilitate the maintenance and replacement of the trunnion 3 and adjust the installation position of the trunnion 3 according to the actual situation.

[0037] Furthermore, if Figure 4 As shown, the application also includes a cover plate 6 for covering the top opening of the carrier bottom box 1, and the cover plate 6 is adapted to the shape of the top opening of the carrier bottom box 1. The shape of the cover plate 6 is set in this way, so that the cover plate 6 is small in size and easy to open and close.

[0038] Furthermore, in order to facilitate the covering of the cover plate 6 and to ensure a more rigorous covering, a set of side edges of the cover plate 6 (which may be Figure 4 The upper and lower sides, which can also be the left and right sides, are preferably provided with downwardly bent buckle edges (not shown in the figure) in this embodiment. Correspondingly, the upper edge of the inner plate of the heat-insulating cavity 2 is provided with a telescopic buckle (not shown in the figure), which can be engaged with the buckle edge. When the cover plate 6 is in the installation state, the staff takes the cover plate 6 and engages the buckle edge on the cover plate 6 with the telescopic buckle to complete the installation of the cover plate 6. When the cover plate 6 needs to be removed, the staff can directly lift up one of the buckle edges of the cover plate 6 with force to achieve the separation of the cover plate 6 from the supporting bottom box 1.

[0039] To facilitate single-person removal of the cover plate 6, this embodiment employs a lightweight, multi-layered structure comprising an upper iron sheet, a middle fiber blanket, and a lower iron sheet. The upper and lower iron sheets provide durability, while the middle fiber blanket provides insulation and heat preservation for the molten steel within the tundish. Due to the extremely high temperature of the molten steel within the tundish during actual operation, the middle limit blanket is required to maintain the cover plate 6 at a temperature that is within human tolerance in order to successfully remove and install the cover plate 6.

[0040] Furthermore, in order to facilitate the staff to take the cover plate 6, a group of handles that are easy to grasp are provided on the cover plate 6.

[0041] Furthermore, in order to facilitate the staff to take the cover plate 6, the volume of the cover plate 6 is set as small as possible to make it easier to take, and the above-mentioned cover plate 6 is set to be a symmetrical folding cover plate 6.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A vacuum induction furnace teeming tundish, characterized by, Comprising The carrying bottom box comprises a bottom plate, two short side enclosing plates, two long side enclosing plates, a steel liquid inlet and a steel liquid outlet are arranged on the bottom plate, the two long side enclosing plates are arranged oppositely, and the two short side enclosing plates are arranged oppositely; the two long side enclosing plates and the two short side enclosing plates are vertically fixed to the edges of the bottom plate and form a rectangular structure with an open top; The two long side enclosing plates are internally formed with hollow heat insulation cavities, and each of the long side enclosing plates is provided with an ear shaft assembly, each ear shaft assembly comprises at least two ear shafts arranged along the length direction of the rectangular structure, the first end of each ear shaft is fixed to the long side enclosing plate, and the second end of the ear shaft protrudes out of the surface of the corresponding long side enclosing plate away from the other long side enclosing plate; the second end of the ear shaft is provided with a blocking mechanism, and the blocking mechanism cooperates with the ear shaft to form a limiting mechanism for limiting the chain hoist in a direction perpendicular to the long side enclosing plate; A cover plate for covering the open top of the carrying bottom box, the cover plate is matched with the shape of the open top of the carrying bottom box.

2. The vacuum induction furnace steel-teeming tundish according to claim 1, characterized in that The blocking mechanism comprises a stopper formed at the second end of the ear shaft, the stopper has a circular structure, and the axis of the stopper coincides with the axis of the ear shaft.

3. The vacuum induction furnace steel ladle tundish according to claim 2, characterized in that The heat insulation cavities in the two long side enclosing plates are symmetrically distributed with respect to the center line of the length direction of the rectangular structure.

4. The vacuum induction furnace steel-teeming tundish according to claim 3, characterized in that The heat insulation cavity extends along the length direction of the rectangular structure to 2 / 3 of the length of the corresponding long side enclosing plate along one end thereof.

5. The vacuum induction furnace steel pouring tundish according to claim 3, wherein Each long side enclosing plate is provided with a grid group in the heat insulation cavity, which divides the heat insulation cavity into a plurality of sub-heat insulation cavities along the length direction of the rectangular structure.

6. The vacuum induction furnace steel pouring tundish according to claim 1, wherein Each ear shaft is detachably connected with the carrying bottom box.

7. The vacuum induction furnace steel pouring tundish according to any one of claims 1-6, wherein A group of side edges of the cover plate are provided with downwardly bent flanges, and the inner side plates of the heat insulation cavities are provided with elastic buckles at the upper edges, which can be buckled in the flanges.

8. The vacuum induction furnace steel ladle tundish according to claim 7, characterized in that The cover plate comprises an upper iron sheet, a middle fiber blanket and a lower iron sheet.

9. The vacuum induction furnace steel-teeming tundish according to claim 8, characterized in that The cover plate is provided with a group of handles for easy gripping.

10. The vacuum induction furnace steel-teeming tundish according to claim 9, characterized in that The cover plate is a symmetrical folding type cover plate.

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