CN2236374Y

CN2236374Y - Directly cooling secondary crystallizer

Info

Publication number: CN2236374Y
Application number: CN 95223470
Authority: CN
Inventors: 倪满森; 区勇铭; 张兴中; 刘新
Original assignee: Central Iron and Steel Research Institute
Current assignee: Central Iron and Steel Research Institute
Priority date: 1995-10-13
Filing date: 1995-10-13
Publication date: 1996-10-02
Anticipated expiration: 2005-10-13

Abstract

The utility model relates to a directly cooling secondary crystallizer which is one component part of a plant for continuous casting and suitable for continuously casting steel and other metal. The utility model comprises an inside wall, an outside wall, upper and lower cover plates, a sealing ring, a mould cavity, a cooling water cavity and a water guiding channel. The utility model is characterized in that the inside wall forming the mould cavity is integral or combined by a plurality of blocks, and the inside wall is uniformly provided with a plurality of water outlets from top to bottom; the cooling water cavity is formed by the inside wall, the outside wall, the upper and lower cover plates and the sealing ring surround in a sealing way; the water guiding channel is connected with the outside wall on the upper part of the cooling water cavity.

Description

Direct-cooling type additional crystallization device

The utility model is a part of continuous casting equipment, is applicable to the continuous casting of steel and other metal.

In tradition continuous casting process, the metal base shell forms in copper crystallizer, and the base shell keeps shape under the support of copper wall, cooling water cools off the base shell indirectly by the copper wall, after the base shell was drawn out crystallizer with certain speed, the cooling of can directly being sprayed water also can obtain the support of some rollers.

Above process exists spatially contradiction of supporting role and cooling effect all the time, at the initial stage (promptly on crystallizer top) that the base hull shape becomes, the support of copper wall and contact with the good of base shell has been in harmonious proportion this contradiction.But between crystallizer lower copper wall and base shell, form air gap, greatly reduce heat-transfer effect, influenced productivity ratio.After the base shell was pulled out crystallizer, the support of sufficient roller was local, still can not prevent the bleedout of some defectiveness base shell.Particularly, thinner at the base shell in crystallizer exit when requiring strong cooling along with the raising of casting speed, need complete support.The water spray cooling in foot roller district is uneven.

The purpose of this utility model is to provide a kind of continuous casting billet shell that makes can obtain good supporting, can get directly evenly cooling again, the direct-cooling type additional crystallization device that helps improving the speed of continuous casting and reduce bleedout.

Based on the foregoing invention purpose, the utility model direct-cooling type additional crystallization device comprises madial wall, lateral wall, upper and lower cover plate, sealing ring, shape chamber, cooling water cavity, the madial wall that diversion passage, its characteristics are to enclose forming cavity is integrally-built or by several combinations, and has several apopores on described madial wall from top to bottom equably; Described cooling water cavity is by madial wall, lateral wall, upper and lower cover plate, and sealing ring is airtight to surround; On the top of cooling water cavity, be connected to the diversion passage on the lateral wall.

The shape of cross section in described shape chamber, big or small and last crystallizer outlet adapts, and can be polygon, circle or other combination shape; The longitudinal section in described shape chamber can be straight shape or arc.

Described upper and lower cover plate is used for fixing madial wall, can adopt multi-formly according to the shape in strand shape chamber, is divided into one or some with inside and outside sidewall and the airtight formation cooling water cavity of sealing ring.

Described madial wall can be manufactured with metallic plates such as copper, processes aquaporin with mechanical means or physical method, also can manufacture with woven wire, powder hot-pressing; Cooling water enters cooling water cavity by the diversion passage, enter the shape chamber by apopore again, reach the purpose of cooling base shell, and with pressure (flow) adjusting device control cooling water cavity internal pressure, by the water passing capacity and the shape chamber internal water pressure of control madial wall, the water flow of control madial wall is 2～100l/m ²S.

The utility model is installed below crystallizer, can one section use, but also multistage is equipped successively.

Compared with prior art, advantage of the present utility model is: it is installed on the below of crystallizer, directly cooling uniformly in the complete support to strand; It is complete comparing its support with sufficient roller mode, cooling is uniform, compare with traditional crystallizer of lengthening, its cooling is direct, can improve heat-transfer effect, alleviate supporting role and cooling effect contradiction spatially effectively, have these advantages in production practices, to show and reduced the bleed-out accident, improve casting speed, improve the positive effect of conticaster productivity ratio.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the cross-sectional view of facing of the present utility model.

Among Fig. 1,1 is the shape chamber, and 2 is madial wall, and 3 is cooling water cavity, and 4 are the diversion passage, and 5 is lateral wall, and 6,7,8 is lower cover, and 10,11 is upper cover plate, and 9,12 are respectively upper and lower sealing ring, and 13 is apopore.

Of the present utility model being constructed as follows: enclose forming cavity 3 by one or a few synthetic madial wall 2, the shape of cross section in shape chamber 3, size and last crystallizer adapt, and can be polygon, circle or other combination shape, and the longitudinal section can be straight shape or arc; Upper cover plate 10,11,

lower cover

6,7,8, upper and

lower sealing ring

12,9 and madial wall 2, the airtight together formation cooling water cavity 3 of lateral wall 5; Madial wall 2 has apopore 13 from top to bottom equably, and diversion passage 4 inserts the top of cooling water cavity 3.

The course of work of the present utility model is as follows: the water source enters cooling water cavity 3 by diversion passage 4, flows into shape chamber 3 by the apopore on the madial wall 2 13 again, and strand is directly cooled off.

Claims

1, a kind of direct-cooling type additional crystallization device, comprise madial wall, lateral wall, upper and lower cover plate, sealing ring, the shape chamber, cooling water cavity, the diversion passage, the madial wall that it is characterized in that enclosing forming cavity is whole, or several combinations, and on described madial wall, have several apopores from top to bottom equably; Described cooling water cavity is by madial wall, lateral wall, and upper and lower cover plate, sealing ring is airtight to surround; On the top of cooling water cavity, be connected to the diversion passage on the lateral wall.

2, crystallizer according to claim 1, its spy is: the shape of cross section in the shape chamber of this crystallizer, big or small and last crystallizer outlet adapts, and can be polygon, circle or other combination shape, and the longitudinal section is straight shape or arc.