CN215998690U

CN215998690U - Rotary table type tundish car set

Info

Publication number: CN215998690U
Application number: CN202122005565.7U
Authority: CN
Inventors: 陈阳; 周干水; 邹旭
Original assignee: MCC Southern Continuous Casting Technology Engineering Co Ltd
Current assignee: MCC Southern Continuous Casting Technology Engineering Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-03-11
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses a rotary table type tundish car set, which comprises a ladle rotary table, a ladle, a tundish car track and a tundish car, wherein the ladle is arranged on the ladle rotary table, the tundish car track is arranged along an arc by taking the ladle rotary table as a center, the tundish car is arranged on the tundish car track, a tundish is arranged on the tundish car, the tundish moves along the tundish car track through the tundish car, and the tundish car is arranged below the ladle. The utility model can greatly save the width of the casting platform of the continuous casting machine, and is particularly suitable for iterative upgrade and reconstruction of various casting machines under the condition of narrow workshop.

Description

Rotary table type tundish car set

Technical Field

The utility model relates to the technical field of metallurgical machinery, in particular to a rotary table type tundish car set.

Background

The tundish is a steel container between the ladle and the crystallizer, molten steel in the ladle is firstly injected into the tundish and then injected into the crystallizer through the submerged nozzle, so that the static pressure of the molten steel is controlled, and the impact and the stirring of molten steel in the crystallizer by a steel flow are reduced. When multi-furnace continuous casting is carried out, a certain amount of molten steel can be stored in the intermediate tank so as to ensure that continuous casting can be carried out when the ladle is replaced.

In the modern continuous casting process, the continuous casting tundish is not only a buffer container for stabilizing pressure, distributing molten steel and ensuring continuous casting of the molten steel, but also plays an important metallurgical role in adjusting the components and temperature of the molten steel, removing inclusions and the like, and can further improve the quality of the molten steel. The flowing condition and temperature distribution of molten steel in the tundish and the average residence time of the molten steel have direct influence on the distribution and removal of inclusions, and various flow control devices (upper retaining walls, dams, filters, turbulence suppressors and the like) are adopted to improve the flowing characteristic of the molten steel in the tundish and increase the residence time of the molten steel in the tundish so as to promote the floating separation of large-particle inclusions in the molten steel, so that the method for effectively improving the cleanliness of the molten steel is gradually developed.

The tundish car is an important component of casting equipment of a continuous casting machine, and mainly has the functions of supporting and carrying the tundish, conveying the tundish to a baking position/casting position of the continuous casting machine in a reciprocating mode, realizing quick replacement of the tundish in the casting process, ensuring smooth continuous casting, and enabling the tundish to leave a crystallizer quickly when an accident occurs.

Since the twenty-first century, the scale and production technology of steel production in China have been rapidly developed, steel making is mainly carried out by converters, the converter capacity is large (120t and above), the smelting period is short (28-38 min), in order to match the production rhythm of a large converter and further improve the operation rate of a continuous casting machine, a steel mill generally adopts the operation of replacing a tundish in a hot state, at the moment, two symmetrically-arranged tundish cars (collectively called tundish car groups) need to be configured on a pouring platform, one of the tundish cars works, the other tundish car is baked at a corresponding baking position to serve as replacing equipment, the two tundish cars are sequentially and alternately used, and the number of continuous casting furnaces can be increased so as to improve the yield of the continuous casting machine.

The tundish car is one of the most complex single-machine facilities in the continuous casting machine, and the types of the tundish car are more. Such as: the modern continuous casting tundish car usually adopts a high-low leg/double-track landing structure form, and can realize the lifting, centering, molten steel weighing in the tundish, long water gap installation, overflow in case of accident and other operations of the tundish. The intermediate tank car mainly comprises a car frame, a lifting device, a walking device, a transverse centering fine adjustment mechanism, a molten steel weighing system, a weighing frame body, a cable drag chain and the like. The walking mechanism is mostly driven by an alternating current variable frequency motor/a hydraulic motor, and generally has a walking speed of 2-20 m/min and a walking distance of about 20 m. In most cases, the intermediate tank car adopts hydraulic lifting and hydraulic centering fine adjustment, the hydraulic, lubricating, gas supplying, cables and other wires are arranged on a drag chain, and the drag chain is arranged on a supporting beam of a platform.

The traditional intermediate tank car group is arranged in a straight line shape, two symmetrically arranged intermediate tank cars all walk linearly, and the width of a pouring platform needs to meet the requirement that 2 intermediate tank cars can be parked at a baking position/a pouring position.

Disclosure of Invention

The utility model aims to solve the technical problem that the rotary table type tundish car group is provided aiming at the defects in the prior art, can greatly save the width of a casting platform of a continuous casting machine, and is particularly suitable for iterative upgrading and reconstruction of various casting machines under the condition of narrow workshop site.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a revolving platform formula tundish car group, includes ladle revolving platform, ladle, tundish car track and tundish car, and the ladle sets up on the ladle revolving platform, and the tundish car track uses the ladle revolving platform to arrange along the arc as the center, and the tundish car sets up on the tundish car track, is equipped with the tundish on the tundish car, and the tundish passes through the tundish car and moves along the tundish car track, and the tundish car arranges in the ladle below.

According to the technical scheme, the bottom of the tundish car is provided with wheels, and the tundish car is in connection contact with the tundish car track through the wheels.

According to the technical scheme, the intermediate tank car track is provided with an intermediate tank working position, and the intermediate tank working position is positioned right below the ladle pouring position.

According to the technical scheme, a crystallizer is arranged right below the working position of the intermediate tank.

According to the technical scheme, the working position is arranged in the middle of the middle tank car track.

According to the technical scheme, the two ends of the rail of the tundish car are provided with the tundish baking device.

According to the technical scheme, the outlet end of the crystallizer is connected with a guide section.

According to the technical scheme, the steel ladles rotate around the centers of the steel ladle rotary tables, two steel ladles can be simultaneously transferred on each steel ladle rotary table, and the two steel ladles are symmetrically arranged.

According to the technical scheme, the position where the steel ladle pours out the molten steel in the steel ladle is a pouring position.

The utility model has the following beneficial effects:

the utility model realizes that each tundish car can walk around the ladle turret in an arc line, can greatly save the width of a casting platform of a continuous casting machine, and is particularly suitable for iterative upgrade and reconstruction of various casting machines under the condition of narrow workshop site.

Drawings

FIG. 1 is a floor plan of a turret tundish car set in an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

in the figure, 1-ladle, 2-ladle turret, 3-tundish, 4-wheel, 5-tundish track, 6-tundish track, 7-crystallizer, 8-guide section and 9-tundish baking device.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1-2, the rotary table type tundish car group in the embodiment provided by the utility model comprises a ladle turret 2, a ladle, a tundish car track 5 and a tundish car 6, wherein the ladle is arranged on the ladle turret 2, the tundish car track 5 is arranged along an arc by taking the ladle turret 2 as a center, the tundish car 6 is arranged on the tundish car track 5, a tundish 3 is arranged on the tundish car 6, the tundish 3 moves along the tundish car track 5 through the tundish car 6, and the tundish car 6 is arranged below the ladle.

Further, wheels 4 are arranged at the bottom of the tundish car 6, and the tundish car 6 is connected and contacted with the tundish car track 5 through the wheels 4.

Furthermore, a tundish working position is arranged on the tundish car track 5 and is positioned right below the ladle pouring position.

Further, a crystallizer 7 is arranged right below the working position of the intermediate tank.

Further, the working position is provided in the middle of the tundish car track 5.

Further, tundish baking devices 9 are arranged at two ends of the tundish car track 5.

Further, the outlet end of the crystallizer 7 is connected with a guide section 8.

Furthermore, the steel ladles rotate around the centers of the steel ladle rotary tables 2, two steel ladles can be simultaneously transferred on each steel ladle rotary table 2, and the two steel ladles are symmetrically arranged.

Further, the position where the ladle pours out the molten steel in the ladle is a pouring position.

The working principle of the utility model is as follows: referring to fig. 1, the tundish 3 is preheated by a tundish baking device 9 before casting to reduce the temperature drop of molten steel during casting and remove moisture in refractory material, and then the wheels 4 on each tundish car 6 transport the tundish 3 to the casting position along the tundish car arc rails 5.

Referring to fig. 2, liquid molten steel in a ladle 1 supported by a ladle turret 2 (a pouring position) flows into an intermediate tank 3 through a protective sleeve below the ladle turret for buffering and purification, then is injected into a crystallizer 7 through a submerged nozzle, is cooled once to form a casting blank with a liquid core, and is cooled secondarily through a guide section 8 to solidify into the casting blank.

The utility model adopts a rotary table type tundish car group arrangement mode, realizes that each tundish car can walk around the steel ladle rotary table in an arc line, can greatly save the width of a casting platform of a continuous casting machine, reduces the capital construction investment of a steel mill, and is particularly suitable for iterative upgrade and reconstruction of various casting machines under the condition of narrow workshop fields. In order to meet the market requirement of the Eg X steel mill, a full-arc X-flow special steel bloom casting machine arranged at the end of a continuous casting workshop is supposed to reconstruct an X-flow high-efficiency common steel bloom casting machine in the original site, the billet casting machine must adopt a tundish hot-exchange operation in order to improve the production efficiency, the width limitation of a pouring platform of an original straight tundish car set can be overcome by adopting the arrangement mode of the rotary table type tundish car set, and finally, the technical improvement engineering is smoothly implemented to bring good economic benefit to the X steel mill.

The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.

Claims

1. The utility model provides a rotary table formula tundish car group, its characterized in that, includes ladle, ladle rotary table, tundish car track and tundish car, and the ladle sets up on the ladle rotary table, and the tundish car track uses the ladle rotary table to arrange along the arc as the center, and the tundish car sets up on the tundish car track, is equipped with the tundish on the tundish car, and the tundish passes through the tundish car and moves along the tundish car track, and the tundish car arranges in the ladle below.

2. The turret tundish car consist according to claim 1, wherein the tundish car is provided with wheels at the bottom, and the tundish car is connected and contacted with the tundish car rail through the wheels.

3. The turret tundish car set according to claim 1, wherein a tundish operating position is provided on the tundish car track, the tundish operating position being located directly below the ladle pouring position.

4. The turret tundish car set according to claim 3, wherein a crystallizer is provided below the tundish working position.

5. The turret tundish car consist according to claim 3, wherein the tundish operating position is located in the middle of the tundish car track.

6. The turret tundish car consist of according to claim 1, wherein tundish baking means are provided at both ends of the tundish car track.

7. The turret tundish car set according to claim 1, wherein the exit end of the crystallizer is connected to a guide section.

8. The set of turret tundish cars of claim 1, wherein the ladles rotate about the center of the ladle turret, and two ladles are transferred simultaneously on each ladle turret, the two ladles being symmetrically arranged.