CN210996453U

CN210996453U - But quick replacement's little overflow launder

Info

Publication number: CN210996453U
Application number: CN201921305015.3U
Authority: CN
Inventors: 程传良; 吴利辉; 冯国辉; 谢士超; 陈新平; 刘兆景; 苏圣龙; 李仲才; 王绪昌
Original assignee: Nanjing Iron and Steel Co Ltd
Current assignee: Nanjing Iron and Steel Co Ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-07-14
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses a but quick replacement's little overflow launder relates to continuous casting equipment technical field, including bottom plate, left side board, right side board, preceding curb plate and posterior lateral plate enclose to establish around the bottom plate and form uncovered container, and its uncovered width is greater than the bottom plate width, and left side board height is greater than right side board height. The device needs short time for replacing after shutdown, avoids production delay and influence on yield caused by long time for replacing the large overflow trough, ensures the tonnage of the tundish, ensures that impurities in molten steel float upwards in sufficient time, greatly reduces the production accident rate and the quality accident rate, and improves the quality of casting blanks and economic benefits.

Description

But quick replacement's little overflow launder

Technical Field

The utility model relates to a continuous casting equipment technical field especially relates to a but quick replacement's little overflow launder.

Background

The continuous casting tundish plays a role in storing molten steel and shunting, the tonnage of the molten steel of the tundish must be ensured to be constant in order to ensure that the molten steel has sufficient space and time to enable inclusions to float upwards, and after a certain amount of covering agent and large ladle slag are stored in the tundish, overflow operation must be carried out to meet the tonnage of the tundish, so that the floating of the inclusions in the molten steel is facilitated. The existing common overflow trough is large in size and inconvenient to replace, and the normal walking of the tundish car is obstructed and even the tundish car equipment is damaged if the arrangement position is inaccurate. And because the individual is large, the two sides are provided with the tundish cars, and the rear side is provided with the bale rotating platform, the hoisting and placing process is slow, the casting time is delayed if the hoisting and placing process is delayed slightly, and the yield plan cannot be completed. And thirdly, when a certain amount of covering agent and large ladle slag are stored in the tundish, the covering agent and the large ladle slag need to overflow into the large overflow groove so as to ensure the tonnage of the tundish to ensure that impurities in the molten steel float upwards in the tundish in sufficient time. The existing overflow launder often has the problems that the short downtime is too short to replace after overflowing, so that impurities in a casting blank are not fully floated due to low impurities of the tundish tonnage, the flaw detection qualification rate is influenced, the overflow launder is replaced overtime, and even tundish car equipment is damaged by collision, great difficulty is brought to production and operation, and meanwhile, huge economic loss is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a but quick replacement's little overflow launder, including bottom plate, left side board, right side board, preceding curb plate and posterior lateral plate enclose to establish around the bottom plate and form uncovered container, and its uncovered width is greater than the bottom plate width, and left side board height is greater than right side board height.

The technical effects are as follows: the utility model discloses make can be in the minimum time quick replacement overflow launder after the casting machine shuts down, avoid because of the production time delay that the big overflow launder of change brought, equipment is hit, the package inner space is not enough to lead to the molten steel inclusion come-up to insufficiently cause quality accident and production accident to and delay to open the condition emergence of watering, influence output and quality.

The utility model discloses the technical scheme who further injects is:

the small overflow groove capable of being replaced quickly is characterized in that the bottom of the container is paved with refractory bricks or miscellaneous ash.

The small overflow groove which can be quickly replaced has the length of the bottom plate of 3500 mm; the bottoms of the left side plate and the right side plate are 470-670 mm wide, and the tops of the left side plate and the right side plate are 670-870 mm wide; the height of the left side plate is 900-1100 mm, and the height of the right side plate is 650-850 mm.

The small overflow groove capable of being replaced quickly is characterized in that the left side plate is 250mm higher than the right side plate.

The thickness of the bottom plate, the left side plate, the right side plate, the front side plate and the rear side plate of the small overflow groove which can be quickly replaced is 30 mm.

The small overflow groove capable of being replaced quickly is characterized in that lifting holes are formed in the left side plate, the front side plate and the rear side plate.

The small overflow groove capable of being replaced quickly is characterized in that lifting holes in the front side plate and the rear side plate are arranged 800mm away from two side edges, the lifting hole in the left side plate is arranged in the middle, and the diameter of the lifting hole is 100 mm.

The utility model has the advantages that:

(1) the utility model solves the problems that the shutdown time of the continuous casting machine is short, the replacement of the common large overflow trough is difficult, the equipment damage is caused in the replacement process, and the floating of impurities in the molten steel is insufficient due to the failure of guaranteeing the tonnage of the middle ladle, thereby greatly reducing the impurities in the casting blank, reducing the time for replacing the overflow trough and improving the quality of the casting blank;

(2) the utility model greatly reduces the probability of production accidents and quality accidents and improves the economic benefit;

(3) the utility model discloses can wholly change, it is convenient to maintain, and the fault rate is low and easy operation.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

wherein: 1. a base plate; 2. a left side plate; 3. a right side plate; 4. a front side plate; 5. a rear side plate; 6. and (5) lifting the hole.

Detailed Description

The structure of the small overflow chute capable of being replaced quickly provided by the embodiment is shown in fig. 1, and the small overflow chute comprises a bottom plate 1, a left side plate 2, a right side plate 3, a front side plate 4 and a rear side plate 5. The left side plate 2, the right side plate 3, the front side plate 4 and the rear side plate 5 are arranged around the bottom plate 1 to form an open container, and refractory bricks or miscellaneous ash are paved at the bottom of the container. Its uncovered width is greater than bottom plate 1 width, and bottom plate 1 is 3500mm long, and left side board 2 and 3 wide 670mm in bottom of right side board, the wide 870mm in top, and 2 high 1100mm in left side board, 3 high 850mm in right side board, and bottom plate 1, left side board 2, right side board 3, preceding curb plate 4 and 5 thickness of posterior lateral plate are 30 mm. Lifting holes 6 are formed in the front side plate 4 and the rear side plate 5 at a distance of 800mm from two side edges respectively, the lifting holes 6 are formed in the middle of the left side plate 2, and the diameter of each lifting hole 6 is 100 mm.

After the continuous casting machine is stopped, the tundish car is driven away from the casting position, the large ladle rotary table is rotated to form a 90-100 degree angle with the casting position, the device is horizontally hoisted by a crane with a hoisting tool, the device is arranged in the left side of the inside of the large overflow groove and aligned, the bottom of the outer arc of the small overflow groove which can be quickly replaced is raised, and tundish slag is favorably overflowed into the overflow groove. After the device is full, the process can be repeated when the machine is stopped again, and the quick replacement of the overflow groove can be completed. The time for replacing the common overflow groove can be effectively reduced, the problem of inaccurate placing position is solved, the tonnage of the tundish is stabilized, the accident rate of production operation is greatly reduced, and the quality and the economic benefit of the casting blank are improved. The device effectively avoids production delay, equipment damage and casting blank quality accidents caused by replacing a common large overflow trough.

In addition to the above embodiments, the present invention may have other embodiments; all the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. A small overflow trough capable of being replaced quickly is characterized in that: including bottom plate (1), left side board (2), right side board (3), preceding curb plate (4) and posterior lateral plate (5), left side board (2) right side board (3) preceding curb plate (4) with posterior lateral plate (5) enclose to be established bottom plate (1) is around and form trapezoidal open container, and the uncovered width of container is greater than bottom plate (1) width, bottom plate (1) is the rectangle, preceding curb plate (4) with posterior lateral plate (5) slope sets up, left side board (2) highly are greater than right side board (3) height.

2. The small, rapidly replaceable isopipe of claim 1 wherein: the bottom of the container is paved with refractory bricks or miscellaneous ash.

3. The small, rapidly replaceable isopipe of claim 1 wherein: the length of the bottom plate (1) is 3500 mm; the bottoms of the left side plate (2) and the right side plate (3) are 470-670 mm wide, and the tops of the left side plate and the right side plate are 670-870 mm wide; the height of the left side plate (2) is 900-1100 mm, and the height of the right side plate (3) is 650-850 mm.

4. A quick change small isopipe of claim 3 wherein: the left side plate (2) is 250mm higher than the right side plate (3).

5. A quick change small isopipe of claim 3 wherein: the thicknesses of the bottom plate (1), the left side plate (2), the right side plate (3), the front side plate (4) and the rear side plate (5) are all 30 mm.

6. A quick change small isopipe of claim 3 wherein: lifting holes (6) are formed in the left side plate (2), the front side plate (4) and the rear side plate (5).

7. The small, rapidly replaceable isopipe of claim 6 wherein: the lifting holes (6) located on the front side plate (4) and the rear side plate (5) are arranged 800mm away from two side edges respectively, the lifting holes (6) located on the left side plate (2) are arranged in the middle, and the diameter of each lifting hole (6) is 100 mm.