CN217551107U

CN217551107U - Crystallizer copper plate with composite structure

Info

Publication number: CN217551107U
Application number: CN202220727016.2U
Authority: CN
Inventors: 马明; 郑旭涛; 赵占山; 喻尧
Original assignee: Rizhao Steel Holding Group Co Ltd
Current assignee: Rizhao Steel Holding Group Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-10-11
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses a crystallizer copper plate with a composite structure, a steel-making continuous casting accessory, which comprises a plate body, wherein a bolt hole boss, a water gap area and a water tank are arranged on the plate body; the back side of the plate body is provided with a recess, the lug bosses of the bolt holes are positioned on the back side of the plate body, and a plurality of longitudinal rows are arranged in parallel; a water gap area is formed between the concave part at the back side of the plate body and the lug boss of the bolt hole; a plurality of water grooves which are arranged in parallel are arranged among one or more groups of adjacent bolt hole bosses on the back side of the plate body. The utility model discloses utilize in the design of the different zone adoption isostructure of crystallizer copper, realize the accurate control to copper cooling intensity distribution, reach control blank shell temperature distribution, reduce the purpose of casting blank defect.

Description

Crystallizer copper plate with composite structure

Technical Field

The utility model relates to a steelmaking continuous casting accessory, in particular to a crystallizer copper plate with a composite structure.

Background

The crystallizer copper plate is an important production spare part on a steelmaking continuous casting production line, is a core spare part for converting molten steel into steel billets on the continuous casting production line, and bears the comprehensive effects of mechanical stress and thermal stress generated by static pressure of high-temperature molten steel, friction force of relative movement with a billet shell and the like. The existing crystallizer copper plate generally adopts a single cold surface structure, such as a water tank type, a water gap type, a water hole type and the like. The billet shell temperature distribution problem is the root cause of various billet defects, such as cracks, dents, and the like. These defects are key factors that restrict the continuous casting drawing rate and the quality of the cast slab. The structure is fine-tuned in order to vary the cooling strength of the different copper plate areas. For example, the water-gap type copper plate enhances cooling by adding rib structures on a plane, and the water-groove type copper plate changes the cooling intensity by changing the depth and distribution density of the water grooves. However, such fine tuning has not met the current process requirements and requires design changes to achieve greater cooling intensity variations. For example, through numerical simulation analysis and relevant heat transfer tests, the cooling requirement cannot be met by adding a rib structure to the water gap type structure copper plate, and the strength required by cooling of the area can be achieved only by adding a water tank structure to the area. Therefore, the crystallizer copper plate which can greatly increase or decrease the regional cooling strength needs to be designed to meet the existing process requirements.

SUMMERY OF THE UTILITY MODEL

The technical task of the utility model is not enough to above prior art, provides a composite construction crystallizer copper for solve the unable different regional cooling strength's of accurate control problem of single structure crystallizer copper.

The technical proposal of the utility model for solving the technical problem is that: the utility model provides a composite construction crystallizer copper, includes the plate body, its characterized in that: the plate body is provided with a bolt hole boss, a water seam area and a water tank; the back side of the plate body is provided with a recess, the lug bosses of the bolt holes are positioned on the back side of the plate body, and a plurality of longitudinal rows are arranged in parallel; a water gap area is formed between the concave part at the back side of the plate body and the lug boss of the bolt hole; a plurality of water tanks which are arranged in parallel are arranged between one group or a plurality of groups of adjacent bolt hole bosses on the back side of the plate body.

Further, the plate body is a copper thin plate.

Further, the water gap area is a plane or a curved surface.

Furthermore, the plate body is a plane-type copper plate or a funnel-type copper plate.

Further, the plate body is a wide-surface copper plate of the crystallizer or a narrow-surface copper plate of the crystallizer.

Compared with the prior art, the utility model discloses following outstanding beneficial effect has:

1. the utility model can realize the technological requirements of different cooling strengths in different areas, and further realize the increase or decrease of the temperature of the local blank shell, so as to achieve the purpose of improving the defects of casting blank cracks, depressions and the like;

2. the purposes of improving the continuous casting drawing speed and improving the production efficiency can be realized;

3. the utility model discloses can use on plane copper, funnel type copper or other shapes copper, also can use wide-face copper or the narrow face copper structure of crystallizer, wide applicability.

4. Simple structure can be reformed transform on current water gap formula or basin formula copper, and the transformation is with low costs, the facilitate promotion.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 isbase:Sub>A schematic viewbase:Sub>A-base:Sub>A of fig. 1.

FIG. 3 is a schematic view of the structure of embodiment 1.

FIG. 4 is a schematic structural view of embodiment 2.

Detailed Description

The invention is further described with reference to the drawings and the detailed description. In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the claimed embodiments. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the following embodiments, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

For better description, the flank side is a direction toward the billet, and the reverse side is the reverse side. It is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," "end," "side," and the like are used in an illustrative and non-restrictive sense, and are intended to cover the specific embodiments shown in the drawings and are used for ease of description and to simplify the description.

As shown in fig. 1-3, the utility model comprises a crystallizer plate body 1, wherein a bolt hole boss 2, a water gap area 3 and a water tank 4 are arranged on the plate body 1.

The plate body 1 is a copper thin plate, and the ventral side facing the direction of the billet is a working surface, and conversely, the ventral side is a back side cooling surface. The back side of the plate body 1 is provided with a recess, namely the section of the plate body 1 is concave.

The bolt hole boss 2 is positioned on the back side of the plate body 1 and is arranged in a plurality of longitudinal rows in parallel.

A water gap area 3 is arranged between the concave part on the back side of the plate body 1 and the lug boss 2 of the bolt hole. The water gap area 3 can be a plane or a curved surface.

A plurality of water grooves 4 which are arranged in parallel are arranged among one group or a plurality of groups of adjacent bolt hole bosses 2 on the back side of the plate body 1.

The matching design of the water gap area 3 and the water tank 4 ensures that cooling water flows through the water gap and the water tank 4 simultaneously, thereby realizing the design purpose of different cooling strengths in different areas of the copper plate.

The position, width, depth, density, length, etc. of the water bath 4 are determined according to the process requirements for different cooling intensity of different areas of the copper plate.

The plate body 1 can be a plane type copper plate or a funnel type copper plate. The mold plate body 1 may also be a wide-faced copper plate or a narrow-faced copper plate.

The original copper plate can be modified, for example, a water outlet groove structure is processed on the original slotted copper plate, or the water groove structure is processed into a plane or a curved surface. The design purpose of the composite structure copper plate can be realized.

In example 1, when the temperature of the shell at the edge of the casting blank is higher and the defects such as edge depression are easy to occur, the cooling of the edge region of the casting blank needs to be strengthened, a water tank 4 can be added at the corresponding position of the edge of the copper plate, and the arrangement and the relevant size of the water tank 4 are shown in fig. 1.

In example 2, when the temperature distribution of the casting blank is uneven due to the higher temperature of the middle part of the blank shell, and crack defects are likely to occur, the middle area of the casting blank needs to be reinforced for cooling, a water tank 4 can be added at the corresponding position of the middle part of the copper plate, and the arrangement and the relevant size of the water tank 4 are shown in fig. 2.

It should be noted that the present embodiment is not described in detail, and is a technique known in the art.

While certain embodiments of the present invention have been described above for purposes of illustration, it will be apparent to those skilled in the art that various obvious changes may be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a composite construction crystallizer copper, includes the plate body, its characterized in that: the plate body is provided with a bolt hole boss, a water seam area and a water tank; the back side of the plate body is provided with a recess, the lug bosses of the bolt holes are positioned on the back side of the plate body, and a plurality of longitudinal rows are arranged in parallel; a water gap area is formed between the concave part at the back side of the plate body and the lug boss of the bolt hole; a plurality of water tanks which are arranged in parallel are arranged between one group or a plurality of groups of adjacent bolt hole bosses on the back side of the plate body.

2. The composite structural crystallizer copper plate of claim 1, wherein: the plate body is a copper thin plate.

3. The composite structural crystallizer copper plate of claim 1, wherein: the water gap area is a plane or a curved surface.

4. The composite structural crystallizer copper plate of claim 1, wherein: the plate body is a plane type copper plate or a funnel type copper plate.

5. The composite structural crystallizer copper plate of claim 1, wherein: the plate body is a wide-surface copper plate of the crystallizer or a narrow-surface copper plate of the crystallizer.