Strip steel, roll face nodules removal device and method

Abstract

The application discloses a strip steel, a roller surface nodule removing device and a method, the strip steel is provided with a middle thick and two end thin structure, and is placed on a roller when used, and is rubbed on the roller at a first speed to remove the roller surface nodule on the roller, wherein the thickness of the strip steel determines the weight of the strip steel, and the weight of the strip steel determines the grinding force generated between the strip steel and the surface of the roller, the first strip steel section and the third strip steel section are thin, the local self-weight is small, and the grinding force is small, the second strip steel section is thick, the local self-weight is large, and the grinding force is large, the first strip steel section, the second strip steel section and the third strip steel section pass through the roller in sequence, the friction of the roller is generated from light to heavy and then from heavy to light, and the roller surface nodule on the roller is quickly removed.

Description

Technical Field

[0001] This invention relates to strip steel production The field of technology relates, in particular to a device and method for removing nodules from strip steel and roll surfaces. Background Technology

[0002] During continuous annealing, foreign matter may adhere to the roll surface due to factors such as cleaning quality, strip surface oxidation, furnace atmosphere fluctuations, and poor furnace cleaning. In addition, the furnace temperature is relatively high (generally above 800℃), causing the adhered foreign matter to react chemically with the roll surface, forming roll surface nodules. These nodules cause periodic scratches on the strip surface during operation, affecting the quality of the strip. Summary of the Invention

[0003] In view of the above problems, this application is made in order to provide a strip and roll surface nodule removal device and method that overcomes or at least partially solves the above problems.

[0004] In one aspect, a strip steel is provided for passing through a roller to be processed at a set first speed to remove nodules on the roller surface. The strip steel includes a first strip steel section, a second strip steel section, and a third strip steel section connected in sequence, wherein the thickness of the second strip steel section is greater than the thickness of the first strip steel section and the thickness of the third strip steel section.

[0005] Optionally, the first strip segment includes a first sub-segment and a second sub-segment arranged sequentially along a first direction, wherein the thickness of the second sub-segment is greater than the thickness of the first sub-segment;

[0006] The third strip includes a third sub-segment and a fourth sub-segment arranged sequentially along the second direction, wherein the thickness of the fourth sub-segment is greater than the thickness of the third sub-segment; wherein, the first direction is the direction from the first strip to the second strip; and the second direction is the direction from the third strip to the second strip.

[0007] Optionally, the cross-sectional thickness of the first segment is a fixed value, and the fixed value of the cross-sectional thickness of the first segment is within the range of [0.2mm, 0.3mm);

[0008] The cross-sectional thickness of the second sub-segment is a fixed value, and the fixed value of the cross-sectional thickness of the second sub-segment is within the range of [0.3mm, 0.5mm). Alternatively, the cross-sectional thickness of the second sub-segment increases in the direction from the first strip to the second strip, and the cross-sectional thickness of the second sub-segment is greater than or equal to 0.3mm and less than or equal to 0.5mm.

[0009] Optionally, the ratio between the length of the first segment and the total length of the strip is in the range of (0%, 2.5%), and the ratio between the length of the second segment and the total length of the strip is in the range of (0%, 2.5%).

[0010] Optionally, the cross-sectional thickness of the third segment is a fixed value, and the fixed value of the cross-sectional thickness of the third segment is within the range of [0.2mm, 0.3mm);

[0011] The cross-sectional thickness of the fourth sub-segment is a fixed value, and the fixed value of the cross-sectional thickness of the fourth sub-segment is within the range of [0.3mm, 0.5mm). Alternatively, the cross-sectional thickness of the fourth sub-segment increases in the direction from the third strip to the second strip, and the cross-sectional thickness of the fourth sub-segment is greater than or equal to 0.3mm and less than or equal to 0.5mm.

[0012] Optionally, the ratio between the length of the third segment and the total length of the strip is in the range of (0%, 2.5%), and the ratio between the length of the fourth segment and the total length of the strip is in the range of (0%, 2.5%).

[0013] Optionally, the ratio between the length of the second strip segment and the total length of the strip can be in the range of [90%, 100%].

[0014] Secondly, a roller surface nodule removal control device is provided, comprising a strip steel as described in the first aspect, and a speed control mechanism, wherein the speed control mechanism is used to control the strip steel to pass through the roller to be processed at a set first speed to remove the nodules on the roller surface; wherein the strip steel comprises a first strip steel segment, a second strip steel segment, and a third strip steel segment connected in sequence, and the thickness of the second strip steel segment is greater than the thickness of the first strip steel segment and the thickness of the third strip steel segment.

[0015] Thirdly, a method for removing nodules from a roller surface is provided, including:

[0016] The strip steel in the first aspect is controlled to pass through the roller to be processed at a set first speed in order to remove the nodules on the roller surface.

[0017] Optional, also includes:

[0018] The control roller rotates at a set second speed, which is less than or equal to 0.5 times the first speed, or greater than or equal to 1.5 times the first speed.

[0019] The technical solution provided in this application has at least the following technical effects or advantages:

[0020] The strip and roll surface nodule removal device and method provided in this application utilize a strip that is thicker in the middle and thinner at both ends. During use, the strip is placed on a roll and passes through the roll at a predetermined first speed to remove nodules from the roll surface. The thickness of the strip determines its weight, which in turn determines the frictional force between the strip and the roll surface. The thinner first and third strip sections have lower local weights and therefore lower grinding forces, while the thicker second strip section has higher local weights and therefore higher grinding forces. The first, second, and third strip sections pass through the roll sequentially, generating friction that gradually increases and then decreases, thereby rapidly removing nodules from the roll surface.

[0021] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 The steel strip structure in the embodiments of this application Figure 1 ;

[0024] Figure 2 The steel structure in the embodiments of this application Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the roller surface nodule removal device in the embodiments of this application;

[0026] Figure 4 This is a flowchart illustrating the roller surface nodule removal method in an embodiment of this application. Detailed Implementation

[0027] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings.

[0028] The accompanying drawings illustrate various structural schematics according to embodiments of this application. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0029] To better understand the above technical solutions, the following will describe the above technical solutions in detail with reference to specific implementation methods. It should be understood that the embodiments of this disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0030] During continuous annealing, foreign matter may adhere to the surface of the carbon sleeve due to factors such as cleaning quality, strip surface oxidation, furnace atmosphere fluctuations, and poor furnace cleaning. In addition, the furnace temperature is relatively high (generally greater than 800℃), and the adhered foreign matter reacts chemically with the carbon sleeve surface, forming bumps on the carbon sleeve surface. These bumps cause periodic scratches on the strip surface during operation, and in severe cases, they can be felt by hand.

[0031] During normal production, the speed of the carbon sleeve roll is the same as or slightly deviates from the speed of the strip (±3%). When the carbon sleeve roll forms nodules that cause indentation defects, the conventional way to deal with the nodules on the surface of the carbon sleeve roll is to run adjustment material to reduce the running speed of the unit and adjust the running speed of the carbon sleeve roll to create a large difference between the running speed of the carbon sleeve roll and the strip. Through the speed difference between the carbon sleeve roll and the strip, the surface of the carbon sleeve roll is ground to achieve the purpose of eliminating nodules.

[0032] During the grinding of furnace roll nodules, the grinding effect is influenced not only by the adhesion strength of the nodules and the speed difference between the strip and the carbon sleeve surface, but also primarily by the strip thickness. This is because a thicker strip has a greater weight, resulting in a larger wrap angle with the carbon sleeve roller during grinding and a greater cutting force.

[0033] In thin-gauge annealing production lines (thickness ≤ 0.3mm), the grinding effect of the strip is generally poor due to its small weight. To achieve the desired effect, it is usually necessary to use thicker adjustment material for grinding. However, due to welding capacity limitations (the thickness deviation of the strip before and after is no more than 30%), it is necessary to continuously use multiple rolls of adjustment material to gradually transition to thicker adjustment material to achieve the purpose of grinding, and then gradually transition to the normal production specifications. This results in long grinding time, large material and energy consumption, and reduced unit operating efficiency.

[0034] In view of this, embodiments of this application provide a strip steel for passing through a roller to be processed at a set first speed to remove nodules from the roller surface. Please refer to [reference needed]. Figure 1 , Figure 1 The steel strip structure in the embodiments of this application Figure 1 The strip 100 includes a first strip 101, a second strip 102, and a third strip 103 connected in sequence, wherein the thickness of the second strip 102 is greater than the thickness of the first strip 101 and the thickness of the third strip 103.

[0035] The strip 100 provided in this embodiment is configured to be thick in the middle and thin at both ends. In use, it is placed on a roller and passes through the roller at a set first speed to remove nodules on the roller surface. The thickness of the strip 100 determines its weight, and the weight of the strip 100 determines the frictional force between the strip 100 and the roller surface. The thinner first strip segment 101 and the third strip segment 103 have a smaller local weight and therefore a smaller grinding force, while the thicker second strip segment 102 has a larger local weight and therefore a larger grinding force. The first strip segment 101, the second strip segment 102, and the third strip segment 103 pass through the roller in sequence to generate friction on the roller from light to heavy and then from heavy to light, so as to quickly remove nodules on the roller surface and ensure the roller grinding effect.

[0036] In some alternative implementations, it remains as Figure 1 As shown, the first strip segment 101 includes a first sub-segment 104 and a second sub-segment 105 arranged sequentially along a first direction, wherein the thickness of the second sub-segment 105 is greater than the thickness of the first sub-segment 104. The third strip segment 103 includes a third sub-segment 106 and a fourth sub-segment 107 arranged sequentially along a second direction, wherein the thickness of the fourth sub-segment 107 is greater than the thickness of the third sub-segment 106; wherein, the first direction is the direction from the first strip segment 101 to the second strip segment 102; and the second direction is the direction from the third strip segment 103 to the second strip segment 102.

[0037] In some optional embodiments, the cross-sectional thickness of the first segment 104 is a fixed value, and the fixed value of the cross-sectional thickness of the first segment 104 is within the range of [0.2mm, 0.3mm], as before. Figure 1 As shown, the cross-sectional thickness of the second sub-segment 105 is a fixed value, and the range of the fixed value of the cross-sectional thickness of the second sub-segment 105 is [0.3mm, 0.5mm].

[0038] Or such as Figure 2 As shown, the cross-sectional thickness of the second sub-segment 105 increases in the direction from the first strip segment 101 to the second strip segment 102, and the cross-sectional thickness of the second sub-segment 105 is greater than or equal to 0.3 mm and less than or equal to 0.5 mm.

[0039] In some alternative implementations, the ratio between the length of the first segment 104 and the total length of the strip 100 is in the range of (0%, 2.5%), and the ratio between the length of the second segment 105 and the total length of the strip 100 is in the range of (0%, 2.5%).

[0040] In some alternative implementations, it remains as follows Figure 1 As shown, the cross-sectional thickness of the third segment 106 is a fixed value, and the range of the fixed value of the cross-sectional thickness of the third segment 106 is [0.2mm, 0.3mm). The cross-sectional thickness of the fourth segment 107 is a fixed value, and the range of the fixed value of the cross-sectional thickness of the fourth segment 107 is [0.3mm, 0.5mm), or as shown. Figure 2 As shown, the cross-sectional thickness of the fourth sub-segment 107 increases in the direction from the third strip segment 103 to the second strip segment 102, and the cross-sectional thickness of the fourth sub-segment 107 is greater than or equal to 0.3 mm and less than or equal to 0.5 mm.

[0041] Understandable, Figure 1 The strip 100 shown has a stepped structure. During production, thin-gauge strips (first segment 104, second segment 105, third segment 106, fourth segment 107) and thick-gauge strips 100 (second strip segment 102) are prepared in advance. These strips 100 are then re-welded in a welding unit to meet usage requirements. The advantage of this method is that it allows for the preparation of strip 100 using existing conventional units.

[0042] Figure 2 The strip 100 structure shown is produced by controlling the rolling process to achieve variable thickness rolling of the same strip 100. The beginning and end of the strip 100 are rolled into thin sections, gradually transitioning to thicker sections. The middle and thick sections are rolled stably, and then the end of the strip 100 gradually transitions back to thinner sections, forming the strip in one step. The advantages of this method are that it can achieve the required strip 100 in one step, with high efficiency, low cost, no weld seams, and guaranteed strip 100 strength.

[0043] In some optional embodiments, the ratio of the length of the third segment 106 to the total length of the strip 100 ranges from (0%, 2.5%), and the ratio of the length of the fourth segment 107 to the total length of the strip 100 ranges from (0%, 2.5%). The ratio of the length of the second strip segment 102 to the total length of the strip 100 ranges from [90%, 100%). The second strip segment 102 has a large thickness and weight, and thus exerts a large force to remove nodules from the roll surface, therefore it has the largest ratio.

[0044] Based on the same inventive concept, this application also provides a roller surface nodule removal device, please refer to... Figure 3 , Figure 3 The diagram below shows a wireframe of a roller surface nodule removal device 300 according to an embodiment of this application. The roller surface nodule removal device 300 includes: a strip steel 100 as provided in the above embodiment, and a speed control mechanism 301. The speed control mechanism 301 is used to control the strip steel 100 to pass through the roller to be processed at a set first speed to remove the nodules on the roller surface. The strip steel 100 includes a first strip steel section 101, a second strip steel section 102, and a third strip steel section 103 connected in sequence. The thickness of the second strip steel section 102 is greater than the thickness of the first strip steel section 101 and the thickness of the third strip steel section 103.

[0045] The roller surface nodule removal device 300 provided in this application embodiment uses a strip steel 100 that is thicker in the middle and thinner at both ends, as provided in the above embodiment, to remove nodules from the roller surface. Since the thickness of the strip steel 100 determines its weight, and the weight of the strip steel 100 determines the frictional force generated between the strip steel 100 and the roller surface, the thinner first strip steel section 101 and the third strip steel section 103 have lower local weight and therefore lower grinding force, while the thicker second strip steel section 102 has higher local weight and therefore higher grinding force. The first strip steel section 101, the second strip steel section 102, and the third strip steel section 103 pass through the roller sequentially, generating friction from light to heavy and then from heavy to light, thereby quickly removing the nodules from the roller surface. Based on the same inventive concept, this application embodiment also provides a roller surface nodule removal method; please refer to [reference needed]. Figure 4 , Figure 4 This is a flowchart of the roller surface nodule removal method in this application embodiment, including:

[0046] S401. Control the strip steel to pass through the roller to be processed at a set first speed in order to remove the nodules on the roller surface.

[0047] The roller surface nodule removal method provided in this application uses a strip steel 100 that is thick in the middle and thin at both ends, as provided in the above embodiment, to remove the nodules on the roller surface. Since the thickness of the strip steel 100 determines its weight, and the weight of the strip steel 100 determines the frictional force between the strip steel 100 and the roller surface, the thinner first strip steel section 101 and the third strip steel section 103 have smaller local self-weight and therefore smaller grinding force, while the thicker second strip steel section 102 has a larger local self-weight and therefore larger grinding force. The first strip steel section 101, the second strip steel section 102, and the third strip steel section 103 pass through the roller in sequence to generate friction on the roller from light to heavy and then from heavy to light, so as to quickly remove the nodules on the roller surface.

[0048] To ensure the erasing effect, the rollers must be controlled to rotate at a set second speed, which is less than or equal to 0.5 times the first speed, or greater than or equal to 1.5 times the first speed.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 application.

[0050] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

Claims

1. A roller surface nodule removal control device, characterized in that, This includes strip steel and a speed control mechanism; The strip steel is used to pass through the roller to be processed at a set first speed to remove the nodules on the roller surface. The strip steel includes a first strip steel section, a second strip steel section, and a third strip steel section connected in sequence, wherein the thickness of the second strip steel section is greater than the thickness of the first strip steel section and the thickness of the third strip steel section. The speed control mechanism is used to control the strip steel to pass through the roller to be processed at a set first speed in order to remove the nodules on the roller surface. The first strip segment includes a first sub-segment and a second sub-segment arranged sequentially along a first direction, wherein the thickness of the second sub-segment is greater than the thickness of the first sub-segment; The third strip steel segment includes a third sub-segment and a fourth sub-segment arranged sequentially along a second direction, wherein the thickness of the fourth sub-segment is greater than the thickness of the third sub-segment; wherein, the first direction is the direction from the first strip steel segment to the second strip steel segment; and the second direction is the direction from the third strip steel segment to the second strip steel segment. The ratio between the length of the first sub-segment and the total length of the strip is in the range of (0%, 2.5%), and the ratio between the length of the second sub-segment and the total length of the strip is in the range of (0%, 2.5%). The ratio of the length of the third segment to the total length of the strip is in the range of (0%, 2.5%), and the ratio of the length of the fourth segment to the total length of the strip is in the range of (0%, 2.5%).

2. The roller surface nodule removal control device as described in claim 1, characterized in that, The cross-sectional thickness of the first sub-segment is a fixed value, and the fixed value of the cross-sectional thickness of the first sub-segment is within the range of [0.2 mm, 0.3 mm); The cross-sectional thickness of the second sub-segment is a fixed value, and the fixed value of the cross-sectional thickness of the second sub-segment is within the range of [0.3mm, 0.5mm). Alternatively, the cross-sectional thickness of the second sub-segment increases in the direction from the first strip to the second strip, and the cross-sectional thickness of the second sub-segment is greater than or equal to 0.3mm and less than or equal to 0.5mm.

3. The roller surface nodule removal control device according to claim 1, characterized in that, The cross-sectional thickness of the third segment is a fixed value, and the fixed value of the cross-sectional thickness of the third segment is within the range of [0.2 mm, 0.3 mm); The cross-sectional thickness of the fourth sub-segment is a fixed value, and the fixed value of the cross-sectional thickness of the fourth sub-segment is within the range of [0.3mm, 0.5mm). Alternatively, the cross-sectional thickness of the fourth sub-segment increases in the direction from the third strip to the second strip, and the cross-sectional thickness of the fourth sub-segment is greater than or equal to 0.3mm and less than or equal to 0.5mm.

4. The roller surface nodule removal control device according to claim 1, characterized in that, The ratio between the length of the second strip segment and the total length of the strip ranges from [90%, 100%].

5. A method for removing nodules from a roller surface, characterized in that, The roller surface nodule removal control device as described in any one of claims 1 to 4 comprises: The strip is controlled to pass through the roller to be processed at a set first speed in order to remove the nodules on the roller surface.

6. The method for removing nodules on the roller surface as described in claim 5, characterized in that, Also includes: The roller is controlled to rotate at a set second speed, which is less than or equal to 0.5 times the first speed, or greater than or equal to 1.5 times the first speed.

Images