CN215090569U - Crystallizer for continuous casting of steel billet - Google Patents
Crystallizer for continuous casting of steel billet Download PDFInfo
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- CN215090569U CN215090569U CN202023082941.4U CN202023082941U CN215090569U CN 215090569 U CN215090569 U CN 215090569U CN 202023082941 U CN202023082941 U CN 202023082941U CN 215090569 U CN215090569 U CN 215090569U
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Abstract
The utility model provides a crystallizer for continuous casting steel billet relates to steel casting equipment technical field, solves the technical problem that cooling medium distributes unevenly and each regional medium flow of uncontrollable in the crystallizer. The crystallizer for continuous casting of the steel billet comprises a sleeve and a crystallizing copper pipe sleeved in the sleeve, wherein a surface increasing structure is arranged on the outer wall of the crystallizing copper pipe; the surface increasing structure is a plurality of grooves which are axially arranged along the crystallization copper pipe in a penetrating way, and all the grooves are distributed along the circumferential direction of the crystallization copper pipe. The outer wall of the crystallization copper pipe is longitudinally grooved, the heat dissipation area of the outer wall is increased by more than 1.3 times, and the heat dissipation capacity is increased; the cooling water flows through the grooves and overcomes the defects that the gap specification is reduced due to factors such as manufacturing errors of the outer sleeve and deformation during use, the influence of cooling water flow and distribution uniformity is caused, the grooves with large specifications are arranged at four corners, the periphery of the crystallizer is cooled uniformly, the cooling flow of corners of the crystallizer is guaranteed, and the cooling effect of the cooling water is improved.
Description
Technical Field
The utility model belongs to the technical field of cast steel equipment technique and specifically relates to a cast crystallizer for steel billet in succession.
Background
At present, as shown in figure 1, the crystallizer for producing rectangular billets and square billets by continuously casting steel in China has the structure that a layer of stainless steel outer sleeve is added on the periphery of a copper pipe, a gap of 3.5-4.5mm is reserved between the inner wall of the sleeve and the periphery of the outer wall of the copper pipe, a cooling medium enters through a lower opening of the gap and flows out from an upper opening of the gap to take away heat transferred by molten steel; molten steel enters from the upper opening of the copper pipe and is cooled by a crystallizer to form a solid blank shell, and the solid blank shell is discharged from the lower opening. The better the heat transfer performance of the cooling medium is, and the more uniform the medium flow in the gaps around the copper pipe is, the more beneficial the casting blank drawing speed and the quality are.
The applicant has found that the prior art has at least the following technical problems:
in the existing crystallizer, firstly, because the stainless steel outer sleeve and the copper pipe have manufacturing errors, use deformation, surface friction uniformity and corner angles, uniform flow rate cooling at each position of the outer surface of the copper pipe cannot be ensured, so that the cooling of the cast steel surface is not uniform; secondly, because the corner part is easy to crack in the molten steel cooling process of the corner part, the flow rate of a corner part medium needs to be properly increased so that the shell thickness of the part of the billet steel is increased, which is beneficial to inhibiting the crack, but the gap specification of the outer side of the existing crystallizer copper pipe is the same, so that the requirement that the flow rate of the corner part medium is larger than that of other areas cannot be met, and because of the defects, the continuous casting steel becomes one of main factors restricting the drawing speed and the steel passing amount in the continuous casting production process, thereby influencing the productivity and the cost.
The utility model provides a strengthen bight cooling capacity, even, the cooling medium flow of cooling medium and increase copper pipe heat radiating area and improve crystallizer for continuous casting steel billet of cooling capacity.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a crystallizer for continuous casting steel billet to solve the technical problem that the cooling medium distributes inhomogeneously and each regional medium flow of uncontrollable in the crystallizer that exists among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a pair of cast crystallizer for steel billet in succession, establish including stainless steel outer tube and cover crystallization copper pipe in the stainless steel outer tube, be provided with increase heat radiating area's face structure on crystallization copper pipe's the outer wall, through it makes to increase the face structure stainless steel outer tube inner wall with clearance between the crystallization copper external diameter reduces.
As a further improvement of the utility model, the clearance between the inner wall of the stainless steel outer sleeve and the outer diameter of the crystallized copper pipe is 0.5-1 mm.
As a further improvement, the surface increasing structure is an edge, the axial direction of the crystallized copper pipe runs through a plurality of grooves which are arranged, and all the grooves are arranged along the circumferential direction of the crystallized copper pipe.
As a further improvement of the utility model, all the groove specifications or shapes are the same or different.
As a further improvement of the utility model, the groove and the crystallized copper tube are of an integrated structure or a split structure.
As a further improvement of the utility model, the cross section of the groove is rectangular or square.
As a further improvement of the utility model, the groove specification is larger than the groove specification on the side of the crystallized copper pipe, which is positioned at the corner of the crystallized copper pipe.
As a further improvement of the utility model, the space between the grooves on the side of the crystallized copper tube is equal.
As a further improvement, the utility model is located the crystallized copper pipe bight recess quantity is two, and the symmetry sets up crystallized copper pipe bight both sides.
As a further improvement of the utility model, the crystallized copper tube and four outer corners of the stainless steel outer sleeve are arc transition structures.
As a further improvement of the utility model, the crystallizing copper tube and the circular arcs of the four outer corners of the stainless steel outer sleeve are in concentric circle structures.
Compared with the prior art, the utility model following beneficial effect has:
the crystallizer for continuous casting billets provided by the utility model improves the structure of the crystallizing copper pipe on the basis of not changing and replacing the original stainless steel outer sleeve, so that the original stainless steel outer sleeve can be universal with the crystallizing copper pipe with the existing structure, the processing is convenient, and the application range of the equipment is improved; considering the factors of manufacturing errors, use deformation and the like of the outer sleeve and the crystallized copper pipe, and arranging the grooves with corresponding specifications to ensure that a gap of 0.5-1mm is reserved between the inner wall of the outer sleeve and the outer wall of the crystallized copper pipe, so that the installation is convenient; the outer wall of the crystallization copper pipe is longitudinally grooved, the sectional area of the outer sleeve gap is kept unchanged, and the heat dissipation area of the outer wall of the crystallization copper pipe is increased by more than 1.3 times under the condition that the flow rate of cooling water is unchanged, so that the heat dissipation capacity is increased; thereby the cooling water passes through the recess and flows and overcome the outer tube and make the error, uses factors such as deformation to cause the gap specification to diminish, leads to the influence of cooling water flow and distribution uniformity, sets up the big recess of specification through setting up recess and four corners department, not only makes the cooling all around of crystallizer even, improves the casting blank quality and reduces the fault rate, but also can guarantee the cooling flow of crystallizer bight, improves this part cooling effect, makes the bight shell thickness of steel billet increase, avoids appearing the breakout phenomenon, the utility model provides a crystallizer increases and draws the speed more than 20%.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a cross-sectional view of a prior art crystallizer;
fig. 2 is a sectional view of the crystallizer of the present invention.
In the figure 1, a stainless steel outer sleeve; 2. crystallizing a copper tube; 3. and (4) a groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a crystallizer for continuous casting of steel billets, which comprises a stainless steel outer sleeve 1 and a crystallized copper pipe 2 sleeved in the stainless steel outer sleeve 1, wherein the crystallizer in the utility model is used for processing rectangular or square steel billets, so that the stainless steel outer sleeve 1 and the crystallized copper pipe 2 are both in rectangular or square cross-sectional shapes; the outer wall of the crystallized copper pipe 2 is provided with a surface increasing structure for increasing the heat dissipation area, and the gap between the inner wall of the stainless steel outer sleeve 1 and the outer diameter of the crystallized copper pipe 2 is reduced through the surface increasing structure.
Because the surface increasing structure is arranged on the outer side of the crystallized copper tube 2, the gap between the crystallized copper tube 2 and the stainless steel outer sleeve 1 is reduced to 0.5-1mm from the original 3.5-4.5mm, the structure of the crystallized copper tube 2 can be improved on the basis of not changing and replacing the original stainless steel outer sleeve 1, the original stainless steel outer sleeve 1 can be universal with the crystallized copper tube 2 with the existing structure, the processing is convenient, and the application range of the equipment is improved.
As an optional embodiment of the present invention, the gap between the inner wall of the stainless steel outer sleeve 1 and the outer diameter of the crystallized copper tube 2 is 0.5-1 mm.
Further, increase a structure and run through many recesses 3 that set up for following the crystallization copper pipe 2 axial, thereby make the cooling water can follow the one end flow direction other end of recess 3, it is even in order to guarantee the cooling in the crystallization copper pipe 2 outside, all recesses 3 distribute along 2 circumference of crystallization copper pipe, that is to say, recess 3 arranges on the whole circle outer wall of crystallization copper pipe 2, each recess 3 all runs through the setting in the crystallization copper pipe 2 outside, make cooling water can follow the different positions of crystallization copper pipe 2 from one end flow direction other end, take away with the heat to the molten steel of the flow through crystallization copper pipe 2 inside.
It should be noted that all the sizes or shapes of the grooves 3 are the same or different, and the specific size or shape can be selected according to actual needs.
In an alternative embodiment of the present invention, all the grooves 3 have the same shape.
It should be further noted that the groove 3 and the crystallized copper tube 2 are an integral structure or a separate structure. Because the stainless steel outer sleeve 1 is not changed or changed, and in order to reduce the gap between the crystallized copper tube 2 and the stainless steel outer sleeve 1, a groove 3 needs to be processed outside the crystallized copper tube 2, and after the groove 3 is arranged, the gap between the maximum outer diameter position of the crystallized copper tube 2 and the inner diameter of the stainless steel outer sleeve 1 can be reduced to 0.5-1mm, therefore, a structure with the groove 3 needs to be arranged outside the crystallized copper tube 2, the structure with the groove 3 can be integrally formed with the crystallized copper tube 2 and produced in processing, or the structure with the groove 3 can be separately processed after the crystallized copper tube 2 is processed, and then the structure and the crystallized copper tube 2 are welded together. In either case, the groove 3 may be provided outside the crystallized copper tube 2, and the gap between the region other than the groove 3 and the inner diameter of the stainless steel outer tube 1 may be smaller than that in the prior art.
Further, the cross section of the groove 3 is rectangular or square. By adopting the rectangle or the square, the increased heat dissipation area is the largest, and the heat dissipation effect can be improved as much as possible.
Considering the factors of manufacturing errors, use deformation and the like of the outer sleeve and the crystallized copper pipe, and arranging the grooves with corresponding specifications to ensure that a gap of 0.5-1mm is reserved between the inner wall of the outer sleeve and the outer wall of the crystallized copper pipe, so that the installation is convenient; the outer wall of the crystallization copper pipe is longitudinally grooved, the sectional area of the outer sleeve gap is kept unchanged, and the heat dissipation area of the outer wall of the crystallization copper pipe is increased by more than 1.3 times under the condition that the flow rate of cooling water is unchanged, so that the heat dissipation capacity is increased; the cooling water flows through the grooves, so that the manufacturing error of the outer sleeve is overcome, the gap specification is reduced due to factors such as deformation, and the influence of the flow rate and the distribution uniformity of the cooling water is caused.
It should be noted that, in order to prevent the breakout problem at the corner of the billet, the size of the groove 3 at the corner of the crystallized copper tube 2 is larger than the size of the groove 3 at the side of the crystallized copper tube 2.
Through setting up the recess that recess and four corners department set up the specification big, not only make the cooling all around of crystallizer even, improve the casting blank quality and reduce the fault rate, but also can guarantee the cooling flow of crystallizer bight, improve this part cooling effect, make the bight shell thickness of steel billet increase, avoid appearing the breakout phenomenon, the utility model provides a crystallizer increases the drawing speed and crosses the steel gauge more than 20%
Further, the grooves 3 on the side of the crystallized copper tube 2 are equally spaced.
Furthermore, the number of the grooves 3 at the corner of the crystallized copper tube 2 is two, and the grooves are symmetrically arranged at two sides of the corner of the crystallized copper tube 2.
Furthermore, the four outer corners of the crystallized copper tube 2 and the stainless steel outer sleeve 1 are all arc transition structures.
Furthermore, the arcs of the four outer corners of the crystallized copper tube 2 and the stainless steel outer sleeve 1 are of concentric circle structures.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A crystallizer for continuous casting of steel billets comprises a stainless steel outer sleeve and a crystallized copper pipe sleeved in the stainless steel outer sleeve, and is characterized in that a surface increasing structure for increasing the heat dissipation area is arranged on the outer wall of the crystallized copper pipe, and the surface increasing structure is used for reducing the gap between the inner wall of the stainless steel outer sleeve and the outer diameter of the crystallized copper pipe;
the gap between the inner wall of the stainless steel outer sleeve and the outer diameter of the crystallized copper pipe is 0.5 mm;
the surface increasing structure is a plurality of grooves which are arranged along the axial direction of the crystallized copper pipe in a penetrating way, and all the grooves are arranged along the circumferential direction of the crystallized copper pipe;
all the grooves are the same or different in specification or shape; and four outer corners of the crystallized copper pipe and the stainless steel outer sleeve are both arc transition structures.
2. The crystallizer of claim 1, wherein the grooves are formed as one piece or separate pieces with the crystallized copper tube.
3. The crystallizer of claim 1, wherein the cross-section of the grooves is rectangular or square.
4. The crystallizer of claim 1 or 3 wherein said groove gauges at the corners of said crystallized copper tube are greater than said groove gauges on the sides of said crystallized copper tube.
5. The crystallizer of claim 4, wherein said grooves on said sides of said crystallized copper tube are equally spaced.
6. The crystallizer of claim 4, wherein said two grooves are symmetrically disposed at the corners of said crystallized copper tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202023082941.4U CN215090569U (en) | 2020-12-18 | 2020-12-18 | Crystallizer for continuous casting of steel billet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023082941.4U CN215090569U (en) | 2020-12-18 | 2020-12-18 | Crystallizer for continuous casting of steel billet |
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| CN215090569U true CN215090569U (en) | 2021-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850424A (en) * | 2022-05-30 | 2022-08-05 | 山东兴鲁有色金属集团有限公司 | Horizontal continuous casting crystallizer with uniform cooling function |
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2020
- 2020-12-18 CN CN202023082941.4U patent/CN215090569U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850424A (en) * | 2022-05-30 | 2022-08-05 | 山东兴鲁有色金属集团有限公司 | Horizontal continuous casting crystallizer with uniform cooling function |
| CN114850424B (en) * | 2022-05-30 | 2024-05-03 | 泊头市河铸重工机械有限公司 | Horizontal continuous casting crystallizer with uniform cooling function |
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