Plate type roller assembly, protection method of plate type roller and rolling mill

Abstract

The invention relates to the technical field of metal processing, and provides a plate type roller assembly, a protection method of a plate type roller and a rolling mill comprising the plate type roller assembly. The plate-shaped roller assembly comprises a plate-shaped roller and a protective layer, and the plate-shaped roller is provided with a working surface so as to apply acting force to a strip; the protective layer is arranged on the working face in a replaceable mode, the protective layer and the working face are arranged in an attached mode, and the two ends of the protective layer are stacked so that the protective layer can make contact with the strip. The protection method of the plate type roller comprises the steps of manufacturing the protection layer; and the protective layer is wound on the working face, and the two ends of the protective layer are stacked. The protective layer surrounds the plate roller, so that the plate roller assembly can play a role in protecting the strip and the plate roller, and the strip and the plate roller are prevented from being damaged by scratching caused by irregular sliding.

Description

Technical Field

[0001] The present application relates to the technical field of metal forging, and in particular to a plate-shaped roller assembly, a plate-shaped roller protection method and a rolling mill. Background Art

[0002] In the related art, the rolling mill is equipped with two profile rollers, two coils and working rollers. Before production, the unprocessed original strip is rolled on the coil on one side. During production, the strip is pulled out, passes through the profile roller on one side, the working roller and the profile roller on the other side in turn, and is wrapped around the coil on the other side for fixation. The working roller processes the strip by extrusion rolling, and the processed strip is formed and stored on the coil on the other side. During production, the profile roller guides and fixes the strip by applying force to the strip, and bears a certain load and friction. This causes the roughness of the working surface of the profile roller to decrease after a period of use, which in turn causes slippage between the profile roller and the strip. After slippage, irregular scratches will occur on the surface of the strip, which seriously affects the surface quality of the product, leading to a series of impacts, including but not limited to:

[0003] 1. Scratches on the surface of the strip cause the strip to be scrapped and unable to be shipped, affecting the delivery time.

[0004] 2. The working surface of the plate roller is damaged and needs to be removed and returned to the factory for grinding, which is costly and time-consuming and may even cause the equipment to stop production.

[0005] 3. The disassembly, assembly and grinding of the profile rollers require professional personnel to handle, otherwise it will affect the surface quality of the strip and the accuracy of profile measurement.

[0006] The current solution is to dismantle and re-grind to increase the roughness of the working surface, which has a great impact on equipment life, production accuracy and production schedule. Summary of the invention

[0007] In view of this, the embodiments of the present application hope to provide a plate-shaped roller assembly, a method for protecting the plate-shaped roller, and a rolling mill to solve the problem of slippage between the plate-shaped roller and the strip.

[0008] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present application provides a plate-shaped roller assembly, comprising:

[0009] A plate-shaped roller having a working surface for applying a force to the strip;

[0010] The protective layer is replaceably arranged on the working surface, the protective layer and the working surface are arranged in close contact, and the two ends of the protective layer are overlapped so that the protective layer is in contact with the strip.

[0011] In some embodiments, the working surface is a cylindrical surface, the unfolded shape of the protective layer is a rectangle, the width of the protective layer is greater than the width of the strip, and the length of the protective layer is greater than the perimeter of the cross section of the working surface;

[0012] The width direction of the protective layer is arranged along the axial direction of the plate-shaped roller, and the protective layer surrounds the working surface along the length direction so that both ends of the protective layer in the length direction form an overlapping area on the working surface.

[0013] In some embodiments, the thickness of the protective layer is less than or equal to 0.05 mm.

[0014] In some embodiments, one side of the protective layer is a smooth surface, and the other side is a rough surface, and the smooth surface of the protective layer faces the working surface.

[0015] In some embodiments, the plate-shaped roller assembly further includes an adhesive layer disposed on a side of the protective layer facing the working surface.

[0016] In some embodiments, the protective layer is neutral paper or a polymer film.

[0017] A second aspect of the present application provides a method for protecting a plate-shaped roller, which is applied to the plate-shaped roller assembly described in the above embodiment. The method comprises:

[0018] Make a protective layer;

[0019] The protective layer is disposed on the working surface with two ends of the protective layer overlapping.

[0020] In some embodiments, the step of laminating the protective layer on the working surface with both ends of the protective layer overlapping includes:

[0021] forming an adhesive layer on one side of the protective layer;

[0022] The side of the protective layer with the adhesive layer is attached to the working surface.

[0023] In some embodiments, the step of forming the adhesive layer on one side of the protective layer includes:

[0024] Laying one side of the protective layer on the sticky material so that the sticky material forms a sticky layer on one side of the protective layer;

[0025] The protective layer is taken out, and the protective layer with the adhesive layer is allowed to dry.

[0026] In some embodiments, before the step of laminating the protective layer on the working surface and overlapping the two ends of the protective layer, the method further includes:

[0027] Impurities on the working surface are removed.

[0028] In some embodiments, after the step of laminating the protective layer on the working surface and overlapping the two ends of the protective layer, the method further includes:

[0029] The bubbles formed when the protective layer is attached to the plate-shaped roller are removed.

[0030] A third aspect of an embodiment of the present application provides a rolling mill, comprising the plate-shaped roller assembly described in the above embodiment, wherein the protective layer is laminated on the working surface in a direction opposite to the rolling direction of the plate-shaped roller.

[0031] In some embodiments, the protective layer is oiled before the strip is processed by the rolling mill each time.

[0032] The embodiments of the present application provide a plate-shaped roller assembly and a protection method for the plate-shaped roller, which use a protective layer to surround the working surface of the plate-shaped roller, and can protect the strip and the plate-shaped roller, so that the strip and the plate-shaped roller are not damaged by scratches caused by irregular sliding. The rolling mill provided in the embodiments of the present application has corresponding beneficial effects due to the use of the above-mentioned plate-shaped roller assembly and the protection method thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a side view of a rolling mill structure in the prior art;

[0034] Figure 2 It is a schematic diagram of a plate-shaped roller assembly according to an embodiment of the present application, showing an intermediate state of providing a protective layer on the plate-shaped roller;

[0035] Figure 3 A schematic diagram of a plate-shaped roller assembly according to an embodiment of the present application is shown, showing the final state of providing a protective layer on the plate-shaped roller;

[0036] Figure 4 A schematic side view of a plate-shaped roller assembly and a strip material according to an embodiment of the present application;

[0037] Figure 5 for Figure 4 A local enlarged view of point A in FIG.

[0038] Figure 6 This is a schematic diagram of manufacturing an adhesive layer in one embodiment of the present application;

[0039] Figure 7 This is a flow chart of a method for protecting a plate-shaped roller in one embodiment of the present application;

[0040] Figure 8 This is a flow chart of a method for protecting a plate-shaped roller in another embodiment of the present application;

[0041] Fig. 9 This is a flow chart of a method for protecting a plate-shaped roller in another embodiment of the present application.

[0042] Description of Reference Numerals

[0043] Plate-shaped roller 1; roller body 11; roller shaft 12; protective layer 2; smooth surface 21; rough surface 22; overlapping area 23; first curling 3; second curling 4; working roller group 5; strip 6; receiving groove 7. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed descriptions in the specific implementation methods should be understood as explanations of the present application and should not be regarded as improper limitations on the present application.

[0045] The directional terms in the description of this application are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application.

[0046] See also Figure 1 The rolling mill is equipped with two plate-shaped rollers 1, a first coil 3, a second coil 4 and a working roll group 5. Before production, the unprocessed strip 6 is coiled on the first coil 3. During production, the strip 6 is pulled out, passes through the plate-shaped roller 1 on one side, the working roll group 5, the plate-shaped roller 1 on the other side, and finally is coiled on the second coil 4 for fixation. The working roll group 5 processes the strip 6 by rolling, and the processed strip 6 is formed and stored on the first coil 4. The plate-shaped roller 1 has the function of guiding and fixing the strip 6 in production, and bears a certain load and friction. The roughness of the working surface of the plate-shaped roller will decrease after a period of use, which will cause slippage between the plate-shaped roller 1 and the strip 6. After slippage, irregular scratches will occur on the surface of the strip 6, which seriously affects the surface quality of the product.

[0047] To solve the above problems, please refer to Figure 2 In a first aspect of an embodiment of the present application, a plate-shaped roller assembly is provided, comprising a plate-shaped roller 1 and a protective layer 2. The plate-shaped roller 1 has a working surface to apply a force to a strip 6. The protective layer 2 is replaceably arranged on the working surface, the protective layer 2 and the working surface are arranged in contact, and the two ends of the protective layer 2 are overlapped so that the protective layer 2 is in contact with the strip 6.

[0048] Specifically, the plate-shaped roller 1 includes a roller body 11 and a roller shaft 12, the roller shaft 12 is installed on the machine base of the rolling mill, and the roller body 11 rotates around the roller shaft 12. The roller body 11 and the roller shaft 12 can be integrally formed. The roller body 11 can be a steel cylindrical structure, and the roller surface of the plate-shaped roller is the cylindrical surface of the roller body 11, and the width of the roller surface along the axial direction is greater than the width of the strip 6. At this time, the working surface can be a part of the cylindrical surface on the roller surface that contacts the strip 6, or it can be the entire cylindrical surface.

[0049] The protective layer 2 can be wound around the plate-shaped roller 1 before the rolling mill starts working, and the protective layer 2 can be removed when the rolling mill stops working. In this way, the protective layer 2 can be quickly replaced when the protective layer 2 is damaged.

[0050] The protective layer 2 and the working surface can be fitted seamlessly, and impurities such as dust or metal chips on the working surface of the plate roller 1 can be removed to eliminate bubbles between the protective layer 2 and the working surface, thereby preventing the strip 6 from rubbing against the bubbles when the hardness of the protective layer 2 is low, thereby causing damage to the protective layer 2, or preventing the protrusions at the bubbles from forming an imprint on the strip 6 when the hardness of the protective layer 2 is high.

[0051] In some embodiments, please refer to Figure 3 , the working surface is a cylindrical surface, the unfolded shape of the protective layer 2 is a rectangle, the width of the protective layer 2 is greater than the width of the strip 6, and the length of the protective layer 2 is greater than the circumference of the cross section of the working surface. The width direction of the protective layer 2 is arranged along the axial direction of the plate-shaped roller 1, and the protective layer 2 surrounds the working surface along the length direction, so that the two ends of the protective layer 2 in the length direction form an overlapping area 23 on the working surface.

[0052] For example, the roller diameter of the plate roller 1 is 303 mm, the circumference of the cross section of the plate roller 1 is about 950 mm, and the length of the protective layer 2 is 1050 mm. Since the length of the protective layer 2 is greater than the circumference of the cross section, the protective layer 2 forms an overlapping area 23 with a length of 100 mm on the working surface.

[0053] In this way, the rectangular protective layer 2 is more convenient to manufacture, and the user can manufacture protective layers 2 of different lengths and widths according to the sizes of the plate-shaped roller 11 to adapt to the structure of the plate-shaped roller 1 of different sizes. The setting that the width of the protective layer 2 is greater than the width of the strip 6 and the length is greater than the circumference of the cross section of the roller body 11 can enable the protective layer 2 to cover the entire area where the plate-shaped roller 1 should be in contact with the strip 6. At the same time, the protective layer 2 at the overlapping area 23 will be tightly attached to the roller body 11 after being subjected to the pressure from the strip 6, making the setting of the protective layer 2 more stable.

[0054] In some embodiments, the thickness of the protective layer 2 is less than or equal to 0.05 mm.

[0055] Specifically, refer to Figure 4 and Figure 5, the thickness of the overlapping area 23 of the protective layer 2 is greater. If the thickness of the protective layer 2 itself is too large, the protective layer 2 will form an obvious bulge in the overlapping area 23, so that the strip 6 will be pressed on the overlapping area 23 to form an impression, which affects the appearance and structural strength of the strip 6 after molding. When the thickness of the protective layer 2 is less than or equal to 0.05 mm, the overlapping area 23 will not form an obvious bulge, and the impression of the strip 6 can be reduced.

[0056] For some examples, see Figure 4 One side of the protective layer 2 is a smooth surface 21, and the other side is a rough surface 22, and the smooth surface 21 of the protective layer 2 faces the working surface.

[0057] Specifically, the roughness of the rough surface 22 can be Ra: 0.3 ~ Ra: 0.5; the roughness of the smooth surface 21 can be Ra: 0.15 ~ Ra: 0.2. When the smooth surface 21 of the protective layer 2 faces the working surface, naturally, the rough surface 22 of the protective layer 2 will contact the strip 6. In this way, on the one hand, the smooth surface 21 with a lower roughness will not cause wear to the roller body 11, and the smooth surface 21 can also fit more closely with the roller body 11. On the other hand, the roughness of the rough surface 22 is higher, which increases the friction between the protective layer 2 and the strip 6, and further reduces the occurrence of irregular sliding between the strip 6 and the protective layer 2.

[0058] In some embodiments, the plate-shaped roller 1 assembly further includes an adhesive layer disposed on a side of the protective layer 2 facing the working layer.

[0059] Specifically, the sticky surface is made of a material that can adhere to the working surface, such as water, an oily material, or a sticky material.

[0060] In this way, the adhesive layer can make the protective layer 2 and the roller body 11 fit more tightly and not fall off easily. Water, oily materials or adhesive materials are low in cost and the adhesive layer is relatively simple to make. At the same time, the adhesive material can also absorb the heat generated by the high-temperature strip 6 after processing to a certain extent, and achieve a cooling effect during the repeated replacement of the protective layer 2.

[0061] In some embodiments, the protective layer 2 is neutral paper or polymer film. The neutral paper is, for example, white neutral backing paper. The polymer film is, for example, a silicone mold.

[0062] In this way, the protective layer 2 has low cost, is easy to cut, simple to install, and has strong heat resistance.

[0063] In another aspect of the present application, a method for protecting a plate-shaped roller is provided, which is applied to the plate-shaped roller assembly described in the above embodiment. Figure 7 ,include:

[0064] S100, making a protective layer;

[0065] S200, attaching a protective layer to a working surface, with both ends of the protective layer overlapping.

[0066] Specifically, in the process of making the protective layer 2, a roll of neutral lining paper with a width greater than the width of the strip 6 and less than the width of the plate roller 1 can be prepared first, and then the circumference of the cross section of the plate roller 1 is measured, and the lining paper with a length greater than the circumference is cut off and used as the protective layer 2.

[0067] In this way, the aforementioned plate-shaped roller 1 assembly can be manufactured efficiently and conveniently.

[0068] In some embodiments, please refer to Figure 8 S200, the step of laminating the protective layer on the working surface with both ends of the protective layer overlapping, comprises:

[0069] S210, forming an adhesive layer on one side of the protective layer;

[0070] S220, attaching the side of the protective layer with the adhesive layer to the working surface.

[0071] In this way, an adhesive layer can be formed on the protective layer 2 , and the adhesive layer can make the protective layer 2 and the roller body 11 fit more closely and not fall off easily.

[0072] In some embodiments, please refer to Fig. 9 S210, a step of making an adhesive layer on one side of the protective layer 2, comprising:

[0073] S211, laying one side of the protective layer on the viscous material so that the viscous material forms a viscous layer on one side of the protective layer;

[0074] S212, take out the protective layer, and dry the protective layer with the adhesive layer.

[0075] Specifically, refer to Figure 6 A receiving groove 7 may be prepared first. The receiving groove 7 may be rectangular, and the length and width of the receiving groove 7 are greater than the length and width of the protective layer 2. Then, the receiving groove 7 is filled with a viscous material, and the protective layer 2 is placed in the receiving groove 7 containing the viscous material for about 10 seconds, so that a viscous layer is naturally formed on the protective layer 2.

[0076] In this way, the viscous material naturally covers one side of the protective layer 2 to form a complete viscous layer, which takes a short time to form, has a simple process and is highly efficient. When the protective layer 2 is laid flat in the receiving groove 7, the viscous material can be evenly covered on the protective layer 2 to form a viscous layer, thereby avoiding wrinkles, folds or adhesion of the protective layer 2 during the production process of the viscous layer. After the protective layer 2 is formed, the viscous layer needs to be dried, otherwise the residual viscous material on the surface of the protective layer 2 will absorb impurities such as metal residues generated in the production workshop, affecting the normal operation of the plate roller 1.

[0077] In some embodiments, before the step of S200, laminating the protective layer on the working surface and overlapping the two ends of the protective layer, the method further includes: removing impurities on the working surface.

[0078] In this way, it is possible to prevent impurities such as copper slag or copper chips from wearing the strip 6 and the plate-shaped roller 1 .

[0079] In some embodiments, after S200, the step of laminating the protective layer on the working surface with both ends of the protective layer overlapping, the method further includes: removing bubbles formed when the protective layer is laminating on the plate-forming roller.

[0080] Specifically, the bubbles on the surface of the protective layer 2 can be wiped off with an oily rag. The bubbles on the protective layer 2 can also be removed in the gap between each production of the rolling mill.

[0081] In this way, it can be ensured that there is no air gap between the protective layer 2 and the plate-shaped roller 1, so that the protective layer 2 can better fit the plate-shaped roller 1.

[0082] Another aspect of the present application provides a rolling mill, comprising the plate-shaped roller assembly described in the above embodiment. The rolling mill may be a medium finishing rolling mill.

[0083] The protective layer 2 is placed on the working surface in a direction opposite to the rolling direction of the plate-shaped roller 1, for example Figure 4 and Figure 5 In the embodiment shown in the figure, the rolling direction of the plate roller 1 is counterclockwise as shown by the arrow in the figure, and the winding direction of the protective layer 2 is clockwise. In this way, during the processing of the strip 6, the strip 6 can press the protective layer 2 to reduce the possibility of the protective layer 2 falling off the plate roller 1.

[0084] In some embodiments, the protective layer 2 is oiled before each processing of the strip 6 in the rolling mill.

[0085] For example, if the protective layer 2 is found to be very dry after making a roll of tape 6, an oily rag may be used to gently wipe the protective layer 2 along the winding direction to apply oil.

[0086] In this way, the surface of the protective layer 2 will not be too dry and cracked, and lose its protective function. It can also effectively cool the heat generated by the plate-shaped roller 1 during operation. Specifically, when applying oil, it should be avoided that obvious oil droplets appear on the surface of the protective layer 2.

[0087] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0088] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A plate-shaped roller assembly, characterized in that: include: A plate-shaped roller having a working surface for applying a force to the strip; The protective layer is replaceably arranged on the working surface, the protective layer and the working surface are arranged in close contact, and the two ends of the protective layer are overlapped so that the protective layer is in contact with the strip.

2. The plate-shaped roller assembly according to claim 1, characterized in that: The working surface is a cylindrical surface, the unfolded shape of the protective layer is a rectangle, the width of the protective layer is greater than the width of the strip, and the length of the protective layer is greater than the perimeter of the cross section of the working surface; The width direction of the protective layer is arranged along the axial direction of the plate-shaped roller, and the protective layer surrounds the working surface along the length direction so that both ends of the protective layer in the length direction form an overlapping area on the working surface.

3. The plate-shaped roller assembly according to claim 1, characterized in that: The thickness of the protective layer is less than or equal to 0.05 mm.

4. The plate-shaped roller assembly according to claim 1, characterized in that: One side of the protective layer is a smooth surface, and the other side is a rough surface, and the smooth surface of the protective layer faces the working surface; and / or, The plate-shaped roller assembly further comprises an adhesive layer, which is arranged on a side of the protective layer facing the working surface; and / or, The protective layer is neutral paper or polymer film.

5. A method for protecting a plate-shaped roller, characterized in that: Applicable to the plate-shaped roller assembly according to any one of claims 1 to 4, the protection method comprises: Make a protective layer; The protective layer is attached to the working surface, and the two ends of the protective layer are overlapped.

6. The protection method according to claim 5, characterized in that: The step of laminating the protective layer on the working surface with both ends of the protective layer overlapping includes: forming an adhesive layer on one side of the protective layer; The side of the protective layer with the adhesive layer is attached to the working surface.

7. The protection method according to claim 6, characterized in that: The step of making the adhesive layer on one side of the protective layer comprises: Laying one side of the protective layer on the sticky material so that the sticky material forms a sticky layer on one side of the protective layer; The protective layer is taken out, and the protective layer with the adhesive layer is allowed to dry.

8. The protection method according to any one of claims 5 to 7, characterized in that: Before the step of laminating the protective layer on the working surface and overlapping the two ends of the protective layer, the method further includes: Impurities on the working surface are removed.

9. The protection method according to any one of claims 5 to 7, characterized in that: After the step of laminating the protective layer on the working surface and overlapping the two ends of the protective layer, the method further includes: The bubbles formed when the protective layer is attached to the plate-shaped roller are removed.

10. A rolling mill, characterized in that: The plate-shaped roller assembly comprises the plate-shaped roller assembly according to any one of claims 1 to 4, wherein the protective layer is laminated on the working surface along a direction opposite to the rolling direction of the plate-shaped roller.

11. The rolling mill according to claim 10, characterized in that Before the strip is processed in the rolling mill each time, the protective layer is oiled.

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