CN219233948U

CN219233948U - Ladle for vacuum ingot casting

Info

Publication number: CN219233948U
Application number: CN202320446587.3U
Authority: CN
Inventors: 曹英斌; 娄亚妮; 张俊春; 朱祥宇; 魏恒忠; 陈瑞; 郭华
Original assignee: Tongyu Heavy Industry Co Ltd
Current assignee: Tongyu Heavy Industry Co Ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-06-23
Anticipated expiration: 2033-03-06

Abstract

The utility model provides a ladle for vacuum ingot casting, comprising: the base, the valve, the cooling water course, sealing bottom plate, casing. The base comprises a steel water gap; the valve is arranged on the outer wall of the base; the valve controls the opening and closing of the molten steel port; the cooling water channel is arranged in the base; the sealing bottom plate is arranged on the bottom outer ring of the base; the shell is fixedly arranged on the base. According to the steel ladle for vacuum ingot casting, the cooling water channel is arranged in the base, low-temperature fluid is continuously injected into the cooling water channel in the using process of the steel ladle, the base is cooled, the situation that the sealing rubber ring is burnt out by the base due to long-time high temperature in the using process of the shell is prevented, the base is a plane, the sealing bottom plate is arranged below the base, and the sealing bottom plate is more convenient to match with the vacuumizing device in the vacuumizing process.

Description

Ladle for vacuum ingot casting

Technical Field

The utility model relates to the field of steel smelting, in particular to a steel ladle for vacuum ingot casting.

Background

In order to ensure the quality of products, steel factories mostly adopt a method of pouring steel ingots in vacuum for removing harmful elements in molten steel. Vacuum ingot casting is a method of casting molten steel melted in the atmosphere into an ingot mold in a vacuum chamber. Also known as vacuum casting. The method can prevent molten steel from absorbing gas and secondary oxidation and can play a degassing role. The casting method is suitable for casting steel ingots for manufacturing large important forgings (such as steam turbine rotors) and the like. The method has the ultimate vacuum degree of 0.5 Torr, the hydrogen content after treatment can be reduced to below 2ppm, and the white point of the large forging can be effectively eliminated. Sometimes also for casting nonferrous metal ingots. The ladle is used for carrying molten steel in front of an open hearth furnace, an electric furnace or a converter in a steel plant or a foundry for casting operation. The structure comprises a plug rod type and a sliding gate type, wherein the portal frame is provided with a unhooking type and a bearing type, and a sliding rod gap eliminating mechanism is arranged in a lifting mechanism of the plug rod type steel ladle so as to ensure the consistency of the center of the plug rod and the center of the gate after multiple use.

The vacuum casting needs to pass through a tundish, and the molten steel has a certain temperature drop, so the tapping temperature is higher than that of the atmospheric casting. The chassis, the ingot mould and the thermal insulation cap are assembled in the vacuum chamber in advance, the vacuum chamber cover is covered, when smelting is about to finish, the honeycomb duct is installed, the tundish is placed, and then the vacuum pumping is started. When the pouring temperature of molten steel in the ladle reaches the technological requirement and about 2/3 of the pouring temperature is high, the pouring ladle plug rod is opened, the molten steel flows out from the water gap, and the aluminum basin on the melting gate enters the vacuum chamber and is poured into the ingot mould. Breaking vacuum after the steel ingot is poured, opening a vacuum chamber cover, adding a heat preservation agent, standing the steel ingot in a mould until the steel ingot is completely solidified, and demoulding and conveying the steel ingot to a water press workshop.

Because of different production processes, the ladle required by vacuumizing has the functions of sealing, cooling and the like. The existing steel ladle is a common steel ladle in the market, and the steel ladle needs to be switched into a special sealed steel ladle in the smelting process to meet the requirement of the vacuumizing process, so that the phenomenon that air impurities and steel ladle impurities enter molten steel inevitably occurs in the switching process, thereby causing the quality problem of the molten steel and reducing the production efficiency of smelting.

Disclosure of Invention

In view of the above shortcomings of the prior art, the present utility model provides a ladle for vacuum ingot casting to improve the technical problem of easy burnout of ladle shell.

To achieve the above and other related objects, the present utility model provides a ladle for vacuum ingot casting comprising: the base, the valve, the cooling water course, sealing bottom plate, casing.

The base comprises a steel water gap; the valve is arranged on the outer wall of the base; the valve controls the opening and closing of the molten steel port; the cooling water channel is arranged in the base; the sealing bottom plate is arranged on the bottom outer ring of the base; the shell is fixedly arranged on the base.

In one example of the utility model, an inner liner is provided inside the housing, the inner liner comprising a heat insulating layer, a permanent layer and a working layer.

In one example of the utility model, refractory bricks are laid in both the liner and the base.

In an example of the utility model, the housing is symmetrically and fixedly provided with a trunnion seat, and the trunnion is fixedly arranged on the trunnion seat.

In one example of the utility model, the trunnion seat is provided with a guide angle that guides the ladle into a subsequent vacuum apparatus.

In an example of the utility model, a cooling water channel is arranged in the base, a rib plate is arranged in the cooling water channel, and water holes are formed in the rib plate; the cooling water channel is provided with an inlet and an outlet at the outer side of the base.

In one example of the utility model, a ladle opening is provided in the bottom of the base, the ladle opening communicating with the ladle interior.

In one example of the utility model, a valve is arranged between an inlet and an outlet on the outer side of the base, a molten steel port is communicated with a die cavity in the molten steel ladle, and the valve controls the opening and the closing of the molten steel port.

In one example of the utility model, a vent is provided in a wall of the housing.

In one example of the utility model, the housing is provided with annular stiffening ribs.

According to the steel ladle for vacuum ingot casting, the cooling water channel is arranged in the base, low-temperature fluid is continuously injected into the cooling water channel in the using process of the steel ladle, the base is cooled, the situation that the sealing rubber ring is burnt out by the base due to long-time high temperature in the using process of the shell is prevented, the base is a plane, the sealing bottom plate is arranged below the base, and the sealing bottom plate is more convenient to match with the vacuumizing device in the vacuumizing process.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a side view of a ladle in accordance with an embodiment of the present utility model;

FIG. 2 is a half cross-sectional view of a ladle in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a cooling water tank according to an embodiment of the present utility model;

fig. 4 is a schematic bottom view of a base according to an embodiment of the utility model.

Description of element reference numerals

100. A housing; 120. a trunnion seat; 121. a guide angle; 130. a trunnion; 140. reinforcing ribs; 150. a lining; 200. a base; 210. a valve; 220. a cooling water channel; 221. an inlet; 222. an outlet; 223. rib plates; 230. sealing the bottom plate; 240. and a steel nozzle.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the utility model is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the utility model. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.

Where numerical ranges are provided in the examples, it is understood that unless otherwise stated herein, both endpoints of each numerical range and any number between the two endpoints are significant both in the numerical range. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs and to which this utility model belongs, and any method, apparatus, or material of the prior art similar or equivalent to the methods, apparatus, or materials described in the examples of this utility model may be used to practice the utility model.

It should be understood that the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like are used in this specification for descriptive purposes only and not for purposes of limitation, and that the utility model may be practiced without materially departing from the novel teachings and without departing from the scope of the utility model.

Referring to fig. 1 to 3, a ladle for vacuum ingot casting, comprising: base 200, valve 210, cooling water channel 220, sealing bottom plate 230, casing 100. In the use process, the steel ladle is arranged on the vacuumizing equipment, and the middle part is sealed by using a sealing rubber ring.

Base 200 includes a steel nozzle 240; the valve 210 is disposed on the outer wall of the base 200; the valve 210 controls the opening and closing of the molten steel port 240; the cooling water channel 220 is provided inside the base 200; the sealing bottom plate 230 is disposed at the bottom outer ring of the base 200; the housing 100 is fixedly disposed on the base 200. In the present embodiment, the connection manner of the housing 100 and the base 200 includes, but is not limited to, welding and fixing. The housing 100 and the base 200 form a sealed chamber. The housing 100 and the base 200 are integrally formed in a cylindrical shape. The ladle is arranged above the vacuum pumping equipment when ingot casting is carried out, and the sealing bottom plate 230 is matched with the vacuum pumping equipment to form annular sealing, so that the joint of the ladle base 200 and the vacuum pumping equipment is sealed. So that the ladle and the vacuumizing equipment are increased with a certain air tightness, and the vacuumizing operation is facilitated.

In one embodiment of the present utility model, the inner side of the housing 100 is provided with an inner liner 150, and the inner liner 150 includes an insulation layer, a permanent layer, and a working layer. Refractory bricks are laid within the inner liner 150 inside the shell 100 and within the base 200. Inside the housing 100 is provided an inner liner 150, the inner liner 150 comprising an insulation layer, a permanent layer and a working layer. The insulation layer can prevent the deformation of the housing 100 on the one hand; on the other hand, the molten iron temperature drop can be prevented, and the heat conducted to the outside is reduced. The permanent layer has the function of preventing molten iron from leaking through from burning out the metal shell when the refractory material of the working layer is locally eroded away or eroded to be very thin, prolonging the service life of the metal shell 100 of the ladle, improving the service life of the ladle by using the lining 150 of the working layer to the maximum extent, improving the use safety and reducing the consumption of the refractory material. The refractory material of the working layer directly contacts molten iron and iron slag and bears mechanical scouring and high-temperature chemical erosion of the molten iron and the iron slag. The working layer is the most dominant layer in the ladle lining 150, and the life of the ladle depends on the material of the refractory material of the working layer, the level of masonry and the degree of mechanical scouring and chemical attack of the layer by the molten iron and slag.

As shown in fig. 1 and 2, in an embodiment of the present utility model, the housing 100 is symmetrically and fixedly provided with a trunnion seat 120, and a trunnion 130 is fixedly disposed on the trunnion seat 120. The trunnion seat 120 is provided with a guide angle 121, and the guide angle 121 guides the ladle into the subsequent vacuum extractor. A pair of trunnion seats 120 are symmetrically disposed on the outer side of the housing 100, and a trunnion 130 is disposed on each of the trunnion seats 120, wherein the trunnion 130 is fixed on the trunnion seat 120 by, but not limited to, welding. The trunnion mount 120 is preferably integrally molded with the housing 100. The lower side of the trunnion 130 is V-shaped and serves as a guide angle 121 to facilitate the convenient, accurate and rapid engagement and fixation of the ladle with the evacuation apparatus during subsequent operation.

In an embodiment of the present utility model, the housing 100 is fixedly disposed on the base 200. The housing 100 has a vent hole provided in a wall thereof. A plurality of ventilation holes are provided in the wall of the casing 100, and no ventilation holes are provided in the liner 150. When the air pressure in the housing 100 is too high, the air may exit the housing 100 through the vent holes, or when the air pressure in the housing 100 is small, the air may enter the housing 100 through the vent holes. The vent holes balance the air pressure inside and outside the housing 100.

As shown in fig. 3, in an embodiment of the present utility model, a cooling water channel 220 is provided inside the base 200, and the cooling water channel 220 is provided with an inlet 221 and an outlet 222 outside the base 200. The cooling water channel 220 is arranged inside the base 200 and is close to the outer wall, cooling water flows in from the inlet 221, flows through the cooling water channel 220 and flows out from the outlet 222, the temperature of the shell 100 and the base 200 is reduced, and the sealing rubber ring is prevented from being melted due to long-time high temperature in the use process of the steel ladle. The rib plates 223 are arranged in the cooling water channel 220, and water passing holes are formed in the rib plates 223, so that the overall structural rigidity of the base 200 can be ensured, and the structural strength can be enhanced.

As shown in fig. 4, in an embodiment of the present utility model, a valve 210 is disposed between an inlet 221 and an outlet 222 at the outer side of the base 200, a molten steel port 240 communicates with a mold cavity inside the housing 100, and the valve 210 controls the opening and closing of the molten steel port 240. Molten steel in the ladle can be discharged through the molten steel port 240, and the valve 210 controls the opening and closing of the molten steel port 240 so as to control the ladle to discharge molten iron and stop the molten iron discharge.

In one embodiment of the utility model, the housing 100 has annular ribs 140. The housing 100 is provided with annular ribs 140 which match the housing 100 to prevent deformation of the housing 100 during operation. The structural strength of the ladle is enhanced.

According to the steel ladle for vacuum ingot casting, the cooling water channel 220 is arranged in the base 200, and cooling liquid is introduced into the cooling water channel 220, so that part of heat of the base 200 and the shell 100 is taken away, and the shell 100 and the base 200 are prevented from being at high temperature for a long time to seal the rubber ring. The sealing bottom plate 230 increases the air tightness with the vacuum pumping device. Therefore, the utility model effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance. The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A ladle for vacuum ingot casting comprising:

the base comprises a steel water gap;

the valve is arranged on the outer wall of the base; the valve controls the molten steel port to open and close;

the cooling water channel is arranged in the base;

the sealing bottom plate is arranged on the outer ring at the bottom of the base;

the shell is fixedly arranged on the base.

2. Ladle according to claim 1, wherein the inside of the shell is provided with an inner lining comprising a heat-insulating layer, a permanent layer and a working layer.

3. Ladle according to claim 2, wherein refractory bricks are laid both in the lining and in the base.

4. Ladle according to claim 1, characterized in that the housing is provided with a seat for the trunnion which is fixed on the seat for the trunnion.

5. Ladle according to claim 4, characterized in that the trunnion seat is provided with a guide angle which guides the ladle into a subsequent evacuation device.

6. The steel ladle according to claim 1, wherein the cooling water channel is arranged in the base, a rib plate is arranged in the cooling water channel, and water holes are formed in the rib plate; the cooling water channel is provided with an inlet and an outlet at the outer side of the base.

7. The ladle of claim 6, wherein the ladle opening is provided in the bottom of the base, the ladle opening being in communication with the ladle interior.

8. The ladle of claim 7, wherein the valve is disposed between the inlet and the outlet outside the base, the ladle opening is in communication with a mold cavity inside the ladle, and the valve controls the opening and closing of the ladle opening.

9. Ladle according to claim 1, wherein the wall of the housing is provided with ventilation holes.

10. Ladle according to claim 1, wherein the shell is provided with annular reinforcing ribs.