Pulling-straightening roller for square billet

Abstract

The utility model provides a pulling-straightening roller for square billets, which belongs to the technical field of pulling-straightening rollers of continuous casting machines and comprises a roller, a shaft head, an inner roller, a bearing seat, a bearing and a bearing cover. The roller is of a hollow structure, an inner roller is embedded in the roller, and a cooling water flowing channel is formed between the roller and the inner roller. And cooling water enters from the pipeline in the middle of the inner roller and flows out from the gap between the inner roller and the roller through the flowing channel, so that the cooling effect is obviously improved. And the shaft head adopts a welding type design, so that the use of a traditional sealing ring is avoided, and the risk of water leakage is reduced. The roller and the inner roller are made of wear-resistant materials, and wear-resistant coatings are arranged on the outer surfaces of the roller and the inner roller, so that the wear resistance and the high-temperature resistance of the roller are enhanced, and the service life is prolonged. The sealing ring has the advantages that the structure is simple, the manufacturing process is simplified, the processing difficulty and the production cost are reduced, the water leakage problem caused by aging or failure of the sealing ring is reduced, the uneven hardness caused by water leakage on the surface of a steel billet is avoided, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of straightening rolls for continuous casting machines, and more particularly to a straightening roll for square billets. Background Technology

[0002] In the steel metallurgical industry, billet straightening rolls play a crucial role, primarily responsible for cooling and transporting steel billets. Their structure is relatively complex, consisting of multiple components including rollers, water-retaining rings, rubber seals, bolts, bearing housings, bearings, bearing caps, and rotary joints. Cooling is achieved through internal water circulation, while the sides of the rollers are tightly sealed with rubber seals, water-retaining rings, and bolts to prevent cooling water leakage.

[0003] However, a series of problems arose during actual online use. Due to the prolonged heating of the continuously cast billet by the rollers, the effectiveness of the internal cooling system gradually deteriorated, causing the roller temperature to rise continuously. The excessively high temperature severely affected the rubber seals, leading to their rapid failure. Consequently, water leakage began to occur on both sides of the rollers, with water droplets dripping directly onto the billet surface. This not only affected the normal cooling of the billet but also caused uneven surface hardness, seriously impacting product quality. The poor internal cooling effect of the billet straightening rollers and the series of problems arising therefrom have become a pressing technical challenge for the steel metallurgical industry. Utility Model Content

[0004] To address the aforementioned technical problems, a straightening roll for square billets is provided. This invention improves the roll body structure and internal cooling effect, effectively preventing uneven surface hardness of the billet caused by water leakage on both sides of the roll, while also extending the roll's service life.

[0005] To achieve the above objectives, this utility model provides a straightening roller for square billets, comprising: a roller, a shaft head, an inner roller, a bearing seat, a bearing, and a bearing cover;

[0006] The roller has a hollow structure with an inner roller embedded inside. A cooling water flow channel is formed between the inner roller and the roller. Cooling water enters from the pipe in the middle of the inner roller and flows out from the gap between the inner roller and the roller through the cooling water flow channel.

[0007] The shaft head is a welded shaft head, which is welded to the roller.

[0008] Furthermore, the bearing housing is connected to the roller via a bearing, and the bearing cover is used to fix the bearing.

[0009] Furthermore, the cooling water flow channel between the inner rollers is an annular structure, and the cooling water enters from the middle of the inner rollers and is evenly distributed along the annular channel.

[0010] Furthermore, the outer surface of the roller is provided with a wear-resistant coating to enhance the roller's wear resistance and high-temperature resistance.

[0011] Furthermore, the middle pipe of the inner roller is provided with multiple diversion holes, through which cooling water is evenly distributed into the gap between the inner roller and the roller.

[0012] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0013] 1. This utility model provides a straightening roller for square billets. By designing the roller with an embedded structure, a cooling water flow channel is formed between the inner roller and the outer roller. The cooling water enters from the middle of the inner roller and flows rapidly, avoiding the accumulation of cooling water inside the roller body and significantly improving the cooling effect. Simultaneously, the inner roller and the outer roller are made of wear-resistant materials, and the outer surface is coated with a wear-resistant coating, further enhancing the roller's wear resistance and high-temperature resistance, and extending its service life.

[0014] 2. This utility model provides a straightening roller for square billets, which adopts a welded shaft head, avoiding the use of sealing rings in traditional structures and significantly reducing the risk of water leakage. Since the two sides of the roller no longer rely on sealing rings for sealing, water leakage problems caused by aging or failure of sealing rings are reduced, avoiding uneven hardness on the billet surface caused by water leakage, and improving product quality.

[0015] 3. The present invention provides a straightening roller for square billets, the structure of which avoids the complex process of using deep hole drilling to process the center and axial deep holes of the roller in the traditional design, simplifies the manufacturing process, reduces the processing difficulty, and at the same time, the welded shaft head design reduces the use of parts, further reduces production costs and improves production efficiency.

[0016] Based on the above reasons, this utility model can be widely promoted in the field of continuous casting machine straightening roll technology. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of a straightening roller structure for square billets according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a straightening roller for square billets according to the present invention;

[0020] Figure 3 This is a schematic diagram of the original design structure of the straightening roller used for square billets in the existing technology.

[0021] In the diagram: 1. Rotary joint; 2. Bearing housing; 3. Bearing; 4. Water baffle ring; 5. Roller; 6. Shaft head weld; 7. Bearing cover; 8. Shaft head; 9. Roller; 10. Inner roller; 11. Rubber sealing ring. Detailed Implementation

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0029] like Figures 1 to 2 As shown, the present invention provides a straightening roller for square billets, comprising: roller 9, shaft head 8, inner roller 10, bearing seat 2, bearing 3, and bearing cover 7.

[0030] The roller 9 has a hollow structure and an inner roller 10 is embedded inside. A cooling water flow channel is formed between the inner roller 10 and the roller 9. Cooling water enters from the pipe in the middle of the inner roller 10 and flows out from the gap between the inner roller 10 and the roller 9 through the cooling water flow channel to reduce the surface temperature of the roller 5.

[0031] The shaft head 8 is a welded shaft head, welded to the roller 9, avoiding the following... Figure 3 The use of rubber sealing ring 11 reduces the risk of water leakage from roller 5.

[0032] Furthermore, the bearing seat 2 is connected to the roller 9 via the bearing 3, and the bearing cover 7 is used to fix the bearing 3 to ensure the stable rotation of the roller 5; the cooling water flow channel between the inner roller 10 and the roller 9 is an annular structure, and the cooling water enters from the middle of the inner roller 10 and is evenly distributed along the annular channel to further improve the cooling effect.

[0033] Furthermore, the roller 9 and the inner roller 10 are made of wear-resistant materials to improve the service life of the roller 5 and reduce wear caused by high temperature and friction.

[0034] Furthermore, the outer surface of the roller 9 is provided with a wear-resistant coating to enhance the wear resistance and high-temperature resistance of the roller 5, thereby further extending the service life of the roller 5.

[0035] Furthermore, the inner roller 10 has a plurality of diversion holes in its intermediate pipe, through which cooling water is evenly distributed into the gap between the inner roller 10 and the roller 9, ensuring that the surface temperature of the roller 5 is reduced uniformly.

[0036] Furthermore, in actual use, this device is installed on the billet production line. Cooling water enters through the pipe in the middle of the inner roller 10, flows through the cooling water flow channel, and flows out from the gap between the inner roller 10 and the roller 9, quickly reducing the surface temperature of the roller 5. The welded shaft head 8 design avoids the risk of water leakage and ensures the quality of the billet surface.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A straightening roll for a bloom, characterized in that, Include: Roller (9), shaft head (8), inner roller (10), bearing seat (2), bearing (3), bearing cover (7); The roller (9) is a hollow structure, and the inner roller (10) is embedded in the inside. The cooling water flow channel is formed between the inner roller (10) and the roller (9). The cooling water enters the pipeline in the middle of the inner roller (10) and flows out from the gap between the inner roller (10) and the roller (9) through the cooling water flow channel. The shaft head (8) is a welded shaft head, which is welded with the roller (9).

2. A straightening roll for billets according to claim 1, characterized in that The bearing seat (2) is connected with the roller (9) through the bearing (3), and the bearing cover (7) is used to fix the bearing (3).

3. A straightening roll for billets according to claim 1, characterized in that The cooling water flow channel between the inner roller (10) and the roller (9) is annular structure, and the cooling water is evenly distributed along the annular channel after entering the middle of the inner roller (10).

4. A straightening roll for billets according to claim 1, characterized in that The outer surface of the roller (9) is provided with wear-resistant coating to enhance the wear resistance and high temperature resistance of the roller.

5. A straightening roll for billets according to claim 1, characterized in that The middle pipeline of the inner roller (10) is provided with a plurality of shunt holes, and the cooling water is evenly distributed into the gap between the inner roller (10) and the roller (9) through the shunt holes.

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