A guide rule liner and hot rolling line

Abstract

This invention proposes a guide ruler liner and a hot rolling production line, belonging to the technical field of metal rolling equipment. To address the problem of low maintenance efficiency in existing guide ruler liners, the guide ruler liner includes a base plate (1), which is upright and has a long strip structure. The length direction of the base plate (1) is parallel to the left-right direction. The base plate (1) contains a working surface (11), on which multiple wear-resistant components (2) are arranged. This guide ruler liner contains multiple wear-resistant components, each of which can be replaced independently, offering advantages such as low maintenance workload and high efficiency.

Description

Technical Field

[0001] This invention relates to the field of metal rolling equipment technology, specifically a guide plate and a hot rolling production line. Background Technology

[0002] In hot rolling production lines, guide strip liners are installed on both sides of the inlet guides of the coiler and / or finishing mill. Their main function is to guide the high-temperature steel strip to center its movement, preventing deviation that could cause quality problems such as edge scraping and tapered coils. Existing guide strip liners are primarily made by laser cladding a certain thickness onto the working surface of a base plate to improve the wear resistance of the metal surface. The base plate is then installed on a fixed base on the inlet side using mounting bolts. Because the guide strip liners are subjected to intense friction from the high-temperature steel strip over long periods, they are prone to wear and groove formation, typically requiring replacement or repair every 2-3 days. The surface cladding process is complex, requires highly skilled maintenance personnel, and results in long maintenance times and low efficiency. Summary of the Invention

[0003] To address the problem of low maintenance efficiency of existing guide ruler liners, this invention provides a guide ruler liner and a hot rolling production line. The guide ruler liner contains multiple wear-resistant components, each of which can be replaced independently, offering advantages such as low maintenance workload and high efficiency.

[0004] The technical solution adopted by the embodiments of the present invention to solve its technical problem is as follows: A guide ruler liner includes a base plate, which is in an upright state and has a long strip structure. The length direction of the base plate is parallel to the left and right directions. The base plate has a working surface, on which multiple wear-resistant components are provided.

[0005] The wear-resistant component has an upright, elongated structure. The wear-resistant component is detachably connected to the base plate. An installation groove is provided on the working surface, which extends in the vertical direction. A part of the wear-resistant component is installed in the installation groove.

[0006] The cross-section of the wear-resistant component is arc-shaped, and the edge of the cross-section of the wear-resistant component contains a bow back section and a bow string section connected in sequence. The bow back section matches and fits the bottom surface of the mounting groove, and the mounting groove is a dovetail groove.

[0007] The arched back section contains, from left to right, a left insertion bevel section, a left guide bevel section, a middle straight section, a right guide bevel section, and a right insertion bevel section. The left insertion bevel section matches and fits the left side of the mounting groove, and the right insertion bevel section matches and fits the right side of the mounting groove.

[0008] The wear-resistant component and the base plate are detachably connected by a stop pin. The inner side of the wear-resistant component is provided with a blind insertion hole, the base plate is provided with a threaded pin hole, the outer peripheral surface of the stop pin is provided with an external thread section, one end of the stop pin is provided with a plug, and the other end of the stop pin is provided with an internal hexagon countersunk hole. The outer diameter of the plug is smaller than the outer diameter of the external thread section. The plug matches the blind insertion hole for insertion, and the external thread section is threadedly connected to the threaded pin hole. Alternatively, the wear-resistant component and the base plate are detachably connected by a base and a bolt post.

[0009] The wear-resistant component has a circular cross-section, the mounting groove has a semi-circular arc cross-section, another part of the wear-resistant component is located outside the mounting groove, and the volume of one part of the wear-resistant component is larger than the volume of the other part of the wear-resistant component.

[0010] The wear-resistant component has a mushroom-shaped structure and includes a head and a rod connected in sequence. The base plate has mounting holes, and the rod is inserted into the mounting holes. The head is located outside the working surface.

[0011] The wear-resistant components are in the form of upright plate structures. The wear-resistant components and the base plate are stacked together, and multiple wear-resistant components are arranged in the left-right direction. The wear-resistant components and the base plate are connected by countersunk screws.

[0012] Wear-resistant components are diffusely distributed and fixed on the substrate by means of inlay, brazing or pre-embedded casting, and the wear-resistant components are in the form of blocks.

[0013] A hot rolling production line includes a coiler and a finishing mill. A guide plate is bolted to the inlet side fixed base of the coiler and / or the inlet side fixed base of the finishing mill. The guide plate is the aforementioned guide plate.

[0014] The beneficial effects of this invention are: the guide plate contains multiple wear-resistant parts, each of which can be replaced independently, which has the advantages of low maintenance workload and high efficiency. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0016] Figure 1 This is a front view schematic diagram of the guide ruler liner of the present invention in Embodiment 1.

[0017] Figure 2 It is along Figure 1 Cross-sectional view along the AA direction.

[0018] Figure 3 It is along Figure 1 Cross-sectional view along the BB direction.

[0019] Figure 4 yes Figure 2 Enlarged schematic diagram of part G in the middle.

[0020] Figure 5 This is a schematic diagram of the stop pin in Example 1.

[0021] Figure 6 This is a cross-sectional schematic diagram of the wear-resistant component in Example 1.

[0022] Figure 7 This is a front view schematic diagram of the wear-resistant component in Example 1.

[0023] Figure 8 This is a front view schematic diagram of the guide ruler liner of the present invention in Embodiment 2.

[0024] Figure 9 It is along Figure 8 Cross-sectional view along the CC direction.

[0025] Figure 10 This is a front view schematic diagram of the guide ruler liner of the present invention in Embodiment 3.

[0026] Figure 11 It is along Figure 10 Cross-sectional view along the DD direction.

[0027] Figure 12 yes Figure 11 Enlarged schematic diagram of part H in the middle.

[0028] Figure 13 This is a front view schematic diagram of the guide ruler liner of the present invention in Embodiment 4.

[0029] Figure 14 It is along Figure 13 Cross-sectional view along the EE direction.

[0030] Figure 15 These are schematic front views of the guide ruler liner of the present invention in Examples 5 and 6.

[0031] Figure 16 It is along Figure 15 Cross-sectional view along the FF direction.

[0032] Figure 17 yes Figure 16 Enlarged schematic diagram of part I in the middle.

[0033] Figure 18 This is a front view schematic diagram of the guide ruler liner of the present invention in Embodiment 7.

[0034] Figure 19 It is along Figure 18 Partial cross-sectional view in the JJ direction.

[0035] Figure 20 This is a schematic diagram of the connection between the wear-resistant component, the base, and the bolt column in Example 7.

[0036] The annotations in the attached figures are explained as follows: 1. Base plate; 2. Wear-resistant parts; 3. Stop pin; 4. Countersunk screw; 5. Bolt; 6. Base; 7. Bolt post; 11. Working surface; 12. Mounting groove; 13. Back side; 14. Threaded pin hole; 15. Mounting hole; 16. First guide slope; 21. Bow back section; 22. Bowstring section; 23. Second guide ramp; 24. Insertion blind hole; 25. Head; 26. Rod section; 31. External thread section; 32. Insert connector; 33. Internal hexagon countersunk hole; 121. Bottom surface; 122. Left side surface; 123. Right side surface; 211. Left insertion oblique segment; 212. Left guiding oblique segment; 213. Middle straight segment; 214. Right guiding oblique segment; 215. Right insertion oblique segment. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] For ease of understanding and description, the following description of the present invention uses absolute positional relationships. Unless otherwise specified, the directional term "above" indicates... Figure 2 The direction above, the directional word "down" indicates Figure 2 The lower side of the middle, the directional word "left" indicates Figure 1 The left side of the direction, the directional word "right" indicates Figure 2 The right-hand direction in the text, the directional word "front" indicates perpendicular to. Figure 2 The direction of the paper and the direction pointing inwards; the directional word "back" indicates perpendicular to. Figure 2 The orientation of the paper is pointed outwards from the viewpoint of the reader or user. This invention is described from the perspective of the reader or user, but the aforementioned directional terms should not be construed as limiting the scope of protection of this invention. Regarding the material, weight, size, angle, and parameters of the components, those skilled in the art can determine or replace them according to actual needs or a limited number of experiments.

[0039] The guide ruler liner of the present invention (also referred to as a guide ruler liner for hot rolling mills of sheet metal) includes a base plate 1, which is in an upright state and has a long strip structure. The length direction of the base plate 1 is parallel to the left and right direction. The base plate 1 has a working surface 11 and a back surface 13. The working surface 11 and the back surface 13 face opposite directions, with the working surface 11 facing backward and the back surface 13 facing forward. Multiple wear-resistant components 2 are provided on the working surface 11. The wear-resistant components 2 are made of existing metal-ceramic composite materials or other wear-resistant metals. The wear-resistant components 2 have mechanical properties such as high temperature resistance, corrosion resistance, high surface hardness, and good wear resistance. The guide ruler liner may include the following specific embodiments.

[0040] Example 1

[0041] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the wear-resistant component 2 has an upright, elongated structure and is detachably connected to the base plate 1. A mounting groove 12 is provided on the working surface 11, extending vertically. A portion of the wear-resistant component 2 is fitted into the mounting groove 12, while another portion protrudes from the working surface 11. During operation, either the wear-resistant component 2 or the working surface 11 can contact the steel plate that needs to be guided.

[0042] The cross-section of the wear-resistant component 2 is arc-shaped. The edge of the cross-section of the wear-resistant component 2 contains a bow back section 21 and a bow string section 22 that are connected in sequence (i.e., interconnected). The bow back section 21 and the bow string section 22 are connected to form the edge of the cross-section of the wear-resistant component 2. The length of the bow back section 21 is greater than the length of the bow string section 22. The bow back section 21 is matched and fitted to the bottom surface 121 of the mounting groove 12. The mounting groove 12 is a dovetail groove.

[0043] Wear-resistant component 2 is made of nano-metal-ceramic material. It possesses the dual advantages of high hardness and wear resistance of ceramics and high toughness and impact resistance of metals, while also exhibiting high temperature resistance and nano-sized micrograin structure, making it the best alternative to traditional laser cladding welding. The hardness of wear-resistant component 2 can reach 1800HV~2300HV, and its wear resistance is 5 to 10 times higher than traditional metal-ceramic materials. It can withstand high temperatures of 800℃~1300℃. The material of wear-resistant component 2 is not limited to specific wear-resistant materials such as nano-ceramics, cemented carbide, or powder metallurgy; any material that meets the equivalent performance requirements can be used.

[0044] like Figure 4 , Figure 6As shown, the arched back section 21 contains a left inserting oblique section 211, a left guiding oblique section 212, a middle straight section 213, a right guiding oblique section 214, and a right inserting oblique section 215 connected sequentially from left to right. The left inserting oblique section 211, the left guiding oblique section 212, the middle straight section 213, the right guiding oblique section 214, and the right inserting oblique section 215 are all straight structures. The left inserting oblique section 211, the left guiding oblique section 212, the middle straight section 213, the right guiding oblique section 214, and the right inserting oblique section 215 are all parallel to the vertical direction.

[0045] The left insertion bevel 211 matches and fits with the left side 122 of the mounting groove 12, and the right insertion bevel 215 matches and fits with the right side 123 of the mounting groove 12. The left insertion bevel 211 and the right insertion bevel 215 are symmetrical and mirror images of each other, and the left guide bevel 212 and the right guide bevel 214 are symmetrical and mirror images of each other.

[0046] like Figure 4 , Figure 5 As shown, the wear-resistant component 2 and the base plate 1 are detachably connected by a stop pin 3. The wear-resistant component 2 is provided with a blind insertion hole 24, the base plate 1 is provided with a threaded pin hole 14, the outer peripheral surface of the stop pin 3 is provided with an external thread section 31, one end of the stop pin 3 is provided with a plug 32, and the other end of the stop pin 3 is provided with an internal hexagon countersunk hole 33. The outer diameter of the plug 32 is smaller than the outer diameter of the external thread section 31. The axis of the stop pin 3 extends in the front-back direction. The plug 32 is matched and plugged into the blind insertion hole 24, and the external thread section 31 is threadedly connected to the threaded pin hole 14.

[0047] The stop pin 3 is mainly used for the upper and lower positioning of the wear-resistant part 2 and for pressing the wear-resistant part 2 to prevent the wear-resistant part 2 from moving due to the difference in thermal expansion coefficients between the wear-resistant part 2 and the base plate 1 caused by temperature changes during operation.

[0048] like Figure 1 , Figure 7 As shown, the lower part of the substrate 1 is provided with multiple first guide slopes 16, and the lower end of the wear-resistant component 2 is provided with multiple second guide slopes 23. The multiple first guide slopes 16 and the second guide slopes 23 are arranged at intervals in the left-right direction. Guide slopes are machined on the wear-resistant plate at different positions, which can be used for guiding the plate.

[0049] The following describes a hot rolling production line, which includes a coiler and a finishing mill. A guide plate is connected to the inlet side fixed base of the coiler and / or the inlet side fixed base of the finishing mill by bolts 5 (i.e., a guide plate is connected to the inlet side fixed base of the coiler by bolts 5, or a guide plate is connected to the inlet side fixed base of the finishing mill by bolts 5, or both the inlet side fixed base of the coiler and the inlet side fixed base of the finishing mill are connected to guide plates by bolts 5). The guide plate is the aforementioned guide plate.

[0050] The guide plate described in this embodiment has the following advantages: 1. It has a detachable structure, making disassembly convenient.

[0051] 2. Wear-resistant component 2 is made of metal-ceramic composite material or other wear-resistant material.

[0052] 3. Wear-resistant parts 2 can be replaced individually as needed.

[0053] 4. Higher maintenance efficiency, faster, and more energy-saving.

[0054] 5. Maintenance workload is small and cost is low.

[0055] 6. The system maintains a state of zero wastewater, zero waste gas, and zero electric arc flash, meeting the requirements of green environmental protection.

[0056] 7. The lifespan after a single repair is longer, which is 5 to 10 times longer than the original repair process, and the repair cycle is greatly increased.

[0057] 8. No professional maintenance team is required, and the skill requirements for maintenance personnel are low.

[0058] 9. Maintenance efficiency is greatly improved.

[0059] 10. Maintenance costs are greatly reduced, significantly alleviating the economic burden on enterprises.

[0060] 11. During maintenance, it is friendly to the health of maintenance personnel and greatly improves their working environment.

[0061] 12. No on-site fabrication is required, facilitating the storage and maintenance of parts.

[0062] Example 2

[0063] The main difference between this embodiment and Embodiment 1 is that, Figure 8 , Figure 9 As shown, the cross-section of the wear-resistant component 2 is circular, the wear-resistant component 2 is a plug-in rod structure, the cross-section of the mounting groove 12 is a semi-circular arc shape, the other part of the wear-resistant component 2 is located outside the mounting groove 12, and the volume of one part of the wear-resistant component 2 is larger than the volume of the other part of the wear-resistant component 2.

[0064] All other technical features in this embodiment are the same as those in Embodiment 1. To save space, this embodiment will not be described in detail.

[0065] Example 3

[0066] The main difference between this embodiment and Embodiment 1 is that, Figure 10 , Figure 11 , Figure 12 As shown, the wear-resistant component 2 has a mushroom-shaped structure. Multiple wear-resistant components 2 are regularly or irregularly distributed on the working surface 11. The wear-resistant component 2 contains a head 25 and a rod 26 connected in sequence. The outer diameter of the head 25 is larger than the outer diameter of the rod 26. The base plate 1 is provided with a mounting hole 15, which can be a through hole or a blind hole. The rod 26 is matched and inserted into the mounting hole 15. The head 25 is located outside the working surface 11. The guide plate can be called a mushroom nail structure.

[0067] All other technical features in this embodiment are the same as those in Embodiment 1. To save space, this embodiment will not be described in detail.

[0068] Example 4

[0069] The main difference between this embodiment and Embodiment 1 is that, Figure 13 , Figure 14 As shown, the wear-resistant component 2 has an upright plate-like structure. The wear-resistant component 2 and the base plate 1 are stacked. The wear-resistant component 2 is matched and attached to the working surface 11. Multiple wear-resistant components 2 are arranged in the left-right direction. The wear-resistant component 2 and the base plate 1 are connected by countersunk screws 4. The guide plate can be called a countersunk screw structure.

[0070] All other technical features in this embodiment are the same as those in Embodiment 1. To save space, this embodiment will not be described in detail.

[0071] Example 5

[0072] The main difference between this embodiment and Embodiment 1 is that, Figure 15 , Figure 16 , Figure 17 As shown, the wear-resistant components 2 are diffusely distributed and fixed on the base plate 1 by inlaying, brazing, or pre-embedded casting. The wear-resistant components 2 are in block shape (e.g., sheet-like, columnar, spherical, or other geometric shapes that can achieve the same purpose). They are fixed to the base plate 1 by inlaying, brazing, or pre-embedded casting, and then the whole assembly is installed on the inlet side fixed base of the coiler and / or finishing mill by bolts 5. During maintenance and replacement, the bolts 5 are removed first, and then the base plate 1 along with the wear-resistant components 2 is replaced as a whole.

[0073] The wear-resistant component 2 is block-shaped, but not limited to specific shapes such as strip, square, or round. The wear-resistant component 2, which is fixed by welding, whether with bolts or without bolts, is not limited to specific shapes such as strip, square, or round.

[0074] All other technical features in this embodiment are the same as those in Embodiment 1. To save space, this embodiment will not be described in detail.

[0075] Example 6

[0076] The main difference between this embodiment and Embodiment 1 is that, Figure 15 , Figure 16 , Figure 17 As shown, the wear-resistant component 2 has a dispersed distribution structure. The wear-resistant component 2 (according to the required geometry) is dispersed on the substrate 1 at certain intervals, or the wear-resistant component 2 is dispersed at a certain density inside the substrate 1 and / or on the working surface 11. Then, the substrate is installed on the base as a whole by bolts 5. During maintenance and replacement, the bolts 5 are removed first, and then the substrate 1 together with the wear-resistant component 2 is replaced as a whole.

[0077] Example 7

[0078] The main difference between this embodiment and Embodiment 1 is that: Figure 18 , Figure 19 and Figure 20 As shown, the wear-resistant component 2 is pre-installed on the detachable base 6 by welding or other processes. The base 6 is fixed with a locking nut after passing through the base plate 1 with bolt posts 7. The bolt posts 7 and the base 6 are assembled together by welding. It can be understood that the wear-resistant component 2 and the base plate 1 are detachably connected by the base 6, bolt posts 7, and locking nuts.

[0079] Among them, such as Figure 18 , Figure 19 and Figure 20 As shown, the bolt post 7 can be threaded or plain (without threads). The base 6 and wear-resistant parts 2 are used together and are not limited to the geometric shape shown in the figure. The geometric shape can be circular, square, rectangular, waist-shaped and other geometric shapes, as long as they achieve the same function.

[0080] The above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, substitutions of equivalent components, or equivalent changes and modifications made within the scope of protection of the present invention, should still fall within the scope of the present invention. Furthermore, the technical features, technical solutions, and embodiments of the present invention can be freely combined and used.

Claims

1. A guide ruler liner, characterized in that, The guide plate includes a base plate (1), which is in an upright state and has a long strip structure. The length direction of the base plate (1) is parallel to the left and right direction. The base plate (1) contains a working surface (11) and multiple wear-resistant parts (2) are provided on the working surface (11).

2. The guide ruler liner according to claim 1, characterized in that, The wear-resistant component (2) has an upright elongated structure. The wear-resistant component (2) is detachably connected to the base plate (1). An installation groove (12) is provided on the working surface (11). The installation groove (12) extends in the vertical direction. A part of the wear-resistant component (2) is installed in the installation groove (12).

3. The guide ruler liner according to claim 2, characterized in that, The cross-section of the wear-resistant component (2) is arc-shaped. The edge of the cross-section of the wear-resistant component (2) contains a bow back section (21) and a bow string section (22) connected in sequence. The bow back section (21) matches and fits the bottom surface (121) of the mounting groove (12). The mounting groove (12) is a dovetail groove.

4. The guide ruler liner according to claim 3, characterized in that, The arched back section (21) contains a left insertion inclined section (211), a left guide inclined section (212), a middle straight section (213), a right guide inclined section (214), and a right insertion inclined section (215) connected from left to right. The left insertion inclined section (211) matches and fits the left side (122) of the mounting groove (12), and the right insertion inclined section (215) matches and fits the right side (123) of the mounting groove (12).

5. The guide ruler liner according to claim 2, characterized in that, The wear-resistant component (2) and the base plate (1) are detachably connected by a stop pin (3). The inner side of the wear-resistant component (2) is provided with a blind hole (24), the base plate (1) is provided with a threaded pin hole (14), the outer peripheral surface of the stop pin (3) is provided with an external thread section (31), one end of the stop pin (3) is provided with a plug (32), the other end of the stop pin (3) is provided with an internal hexagon countersunk hole (33), the outer diameter of the plug (32) is smaller than the outer diameter of the external thread section (31), the plug (32) is matched and plugged into the blind hole (24), and the external thread section (31) is threadedly connected to the threaded pin hole (14). Alternatively, the wear-resistant component (2) can be detachably connected to the base plate (1) via a base (6) and a bolt post (7).

6. The guide ruler liner according to claim 2, characterized in that, The cross-section of the wear-resistant component (2) is circular, the cross-section of the mounting groove (12) is arc-shaped, and another part of the wear-resistant component (2) is located outside the mounting groove (12). The volume of one part of the wear-resistant component (2) is larger than the volume of the other part of the wear-resistant component (2).

7. The guide ruler liner according to claim 1, characterized in that, The wear-resistant component (2) has a mushroom-shaped structure. The wear-resistant component (2) contains a head (25) and a rod (26) connected in sequence. The base plate (1) is provided with a mounting hole (15). The rod (26) is inserted into the mounting hole (15) in a matching manner. The head (25) is located outside the working surface (11).

8. The guide plate according to claim 1, characterized in that, The wear-resistant component (2) has an upright plate-like structure. The wear-resistant component (2) and the base plate (1) are stacked. Multiple wear-resistant components (2) are arranged in the left-right direction. The wear-resistant component (2) and the base plate (1) are connected by countersunk screws (4).

9. The guide ruler liner according to claim 1, characterized in that, The wear-resistant parts (2) are diffusely distributed and fixed on the substrate (1) by means of inlay, brazing or pre-embedded casting, and the wear-resistant parts (2) are in the form of blocks.

10. A hot rolling production line, characterized in that, The hot rolling production line includes a coiler and a finishing mill. A guide plate is connected to the inlet side fixed base of the coiler and / or the inlet side fixed base of the finishing mill by bolts (5). The guide plate is the guide plate as described in claim 1.

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