Lining plate of laser cladding rolling mill

Abstract

The utility model provides a laser cladding rolling mill lining plate, which belongs to the technical field of rolling mill accessories and comprises a lining plate body, the lining plate body comprises a working surface and a mounting surface which are oppositely arranged, the working surface is used for bearing the impact of iron oxide powder, and the mounting surface is used for connecting a rolling mill housing. The working surface is a wavy curved surface formed by smoothly connecting a plurality of arc surfaces, a wear-resistant layer is arranged on the working surface through laser cladding, a plurality of first assembly holes penetrating from the working surface to the mounting surface are formed in the lining plate body, and the lining plate body is a metal product with the hardness value lower than or equal to that of a rolling mill housing material. The laser cladding rolling mill lining plate provided by the utility model not only can bear the jet impact abrasion of iron oxide powder, but also can reduce the abrasion to the mounting position of the lining plate on the rolling mill housing.

Description

Technical Field

[0001] The utility model belongs to the technical field of rolling mill accessories, and more specifically relates to a laser cladding rolling mill lining plate. Background Art

[0002] The working environment of the rolling mill is harsh. During the working process, the rolling cooling water quickly atomizes when it encounters the red-hot steel billet, and sprays around with the iron oxide powder that falls off the surface of the steel billet. The rollers cause a large impact on the frame arch through the bearing seat. In order to avoid damage to the frame arch, a liner is usually installed on the frame arch to protect it. Most of the mill arches are made of ordinary cast steel, while the liner is usually a wear-resistant metal part with higher hardness. When the rolling mill is in operation, it is inevitable that the rolling mill will vibrate, causing the liner and the mill arch to rub against each other. Over time, the position on the mill arch for installing the liner will also wear out, causing the liner to loosen and affect the rolling mill. Utility Model Content

[0003] The utility model aims to provide a laser cladding rolling mill lining plate, which can not only withstand the jet impact wear of iron oxide powder, but also reduce the wear of the lining plate installation position on the rolling mill arch.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a laser cladding rolling mill lining, including a lining body, the lining body including a working surface and a mounting surface relatively arranged, the working surface is used to withstand the impact of iron oxide powder, and the mounting surface is used to connect the rolling mill arch, the working surface is a wavy surface formed by smoothly connecting a plurality of arc surfaces, and a wear-resistant layer is provided on the working surface by laser cladding, a plurality of first assembly holes are provided on the lining body, which penetrate from the working surface to the mounting surface, and the lining body is a metal product having a hardness value lower than or equal to the hardness of the rolling mill arch material.

[0005] In a possible implementation, the wear-resistant layer has a thickness between 0.5 and 1.5 mm.

[0006] In a possible implementation, a backing plate is detachably connected to the mounting surface, and the backing plate is a wear-resistant engineering plastic product.

[0007] In a possible implementation, a buffer is provided between the lining plate body and the pad.

[0008] In a possible implementation, a plurality of insertion holes are provided between the lining plate body and the pad, and pin rods for connecting the lining plate body and the pad are inserted and fitted into the insertion holes.

[0009] In one possible implementation, a plurality of first T-slots are provided on the mounting surface, and a plurality of second T-slots are provided on the end surface of the pad facing the liner body corresponding to the plurality of first T-slots, the first T-slots and the second T-slots are arranged opposite to each other, the insertion hole is formed between the first T-slots and the second T-slots, and the cross-section of the insertion hole is I-shaped, and the pin rod is an I-shaped rod adapted to be inserted into the insertion hole.

[0010] In a possible implementation, it is characterized in that the first T-shaped slot is a through slot extending transversely through the lining body, the second T-shaped slot is a through slot extending transversely through the pad, and a plurality of the first T-shaped slots are arranged at intervals.

[0011] In a possible implementation, it is characterized in that a positioning edge for limiting the position of the lining plate body is provided on the backing plate.

[0012] In a possible implementation, there are a plurality of positioning ribs, and the plurality of positioning ribs are arranged in the circumference of the end surface of the pad facing the lining body, and the lining body is inserted between the plurality of positioning ribs.

[0013] In a possible implementation, the first assembly hole is connected to the first T-slot, and a second assembly hole and a third assembly hole are respectively provided on the pin rod and the pad corresponding to the first assembly hole, and the first assembly hole, the second assembly hole and the third assembly hole are coaxially arranged for inserting and fastening bolts.

[0014] The beneficial effect of the laser cladding rolling mill lining provided by the utility model is that: compared with the prior art, the laser cladding rolling mill lining of the utility model sets the lining body to a metal product with a hardness value lower than or equal to the hardness of the rolling mill arch material, so that when the lining body and the rolling mill arch rub against each other again, the wear amount occurs on the lining body, thereby reducing the damage to the rolling mill arch, and by setting the working surface of the lining body to a wavy surface, the frontal impact of iron oxide powder on the working surface is avoided, the impact force of iron oxide powder is weakened, and a wear-resistant layer is set on the working surface by laser cladding to improve the wear resistance of the working surface, so that the working surface can withstand the impact wear of iron oxide powder and improve the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the main structure of the laser cladding rolling mill liner provided in an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of a top view of a laser cladding rolling mill liner provided in an embodiment of the utility model;

[0018] Figure 3 For along Figure 1 Cross-sectional structure diagram along line AA.

[0019] Description of reference numerals:

[0020] 1. Lining plate body; 101. Working surface; 11. Wear-resistant layer; 12. First assembly hole; 13. First T-slot; 2. Backing plate; 21. Second T-slot; 22. Positioning edge; 23. Third assembly hole; 3. Buffer layer; 4. Pin rod; 41. Second assembly hole. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] See also Figures 1 to 3, the laser cladding rolling mill lining provided by the utility model is now described. The laser cladding rolling mill lining comprises a lining body 1, the lining body 1 comprises a working surface 101 and a mounting surface arranged opposite to each other, the working surface 101 is used to withstand the impact of iron oxide powder, the mounting surface is used to connect the rolling mill arch, the working surface 101 is a wavy curved surface formed by smoothly connecting a plurality of arc surfaces, and a wear-resistant layer 11 is provided on the working surface 101 by laser cladding, a plurality of first assembly holes 12 are provided on the lining body 1 which penetrate from the working surface 101 to the mounting surface, and the lining body 1 is a metal product having a hardness value lower than or equal to the hardness of the rolling mill arch material.

[0026] Compared with the prior art, the laser cladding rolling mill lining provided by the utility model sets the lining body 1 as a metal product with a hardness value lower than or equal to the hardness of the rolling mill arch material, so that when the lining body 1 and the rolling mill arch rub against each other again, the wear amount occurs on the lining body 1, thereby reducing the damage amount of the rolling mill arch, and by setting the working surface of the lining body 1 as a wavy curved surface, the frontal impact of the iron oxide powder on the working surface 101 is avoided, the impact force of the iron oxide powder is weakened, and a wear-resistant layer 11 is set on the working surface by laser cladding to improve the wear resistance of the working surface, so that the working surface can withstand the impact wear of the iron oxide powder and improve the service life.

[0027] In this embodiment, the thickness of the wear-resistant layer 11 is controlled between 0.5-1.5 mm.

[0028] In some embodiments, see Figures 1 to 3 A pad 2 is also provided on the liner body 1. In this embodiment, the pad 2 is detachably connected to the mounting surface of the liner body 1. When in use, the pad 2 is clamped between the liner body 1 and the rolling mill arch. In this embodiment, the pad 2 is a wear-resistant engineering plastic part. Such a setting, on the one hand, can provide anti-wear protection for the rolling mill arch, and on the other hand, the plastic part is light in weight and cheap in cost, so it is economical and practical.

[0029] In this embodiment, a buffer is further provided between the pad 2 and the lining body 1. The buffer can be a rubber gasket or a silicone gasket, etc. By providing the buffer, part of the impact force of the iron oxide powder on the lining body 1 is absorbed, so that the impact force transmitted by the lining body 1 to the pad 2 is weakened, the vibration of the pad 2 is reduced, and the friction between the pad 2 and the rolling mill arch is weakened.

[0030] In this example, see Figure 3 A plurality of insertion holes are provided between the lining body 1 and the pad 2, and pin rods 4 for connecting the lining body 1 and the pad 2 are inserted and matched in the insertion holes.

[0031] Specifically, three first T-slots 13 are provided on the mounting surface, and the first T-slots 13 are through-slots arranged transversely through the liner body 1, and the three first T-slots 13 are arranged at intervals along the length direction of the liner body 1. Three second T-slots 21 are provided on the end surface of the backing plate 2 facing the liner body 1 corresponding to the three first T-slots 13, and the second T-slots 21 are through-slots arranged transversely through the backing plate 2. The corresponding first T-slots 13 and the second T-slots 21 are arranged oppositely, so that the above-mentioned plug-in holes are formed between the corresponding first T-slots 13 and the second T-slots 21. In this embodiment, the cross section of the plug-in hole is I-shaped, and the pin rod 4 is an I-shaped rod adapted to be inserted into the plug-in hole. In use, the assembly and disassembly of the backing plate 2 and the liner body 1 can be achieved by inserting and matching the pin rod 4 with the plug-in hole.

[0032] In this example, see Figures 1 to 3 A positioning rib 22 for limiting the position of the lining body 1 is provided on the pad 2. Specifically, there are four positioning ribs 22, which are arranged in the circumference of the end surface of the pad 2 facing the lining body 1. In the present embodiment, the pad 2 and the lining body 1 are both rectangular structures, and the four positioning ribs 22 are respectively arranged on the four edges of the pad 2, wherein the two positioning ribs 22 located in the width direction of the pad 2 avoid the second T-slot 21. In application, the lining body 1 is inserted between the four positioning ribs 22. Through the positioning of the four positioning ribs 22, the corresponding first T-slot 13 and the second T-slot 21 can form an insertion hole.

[0033] In this example, see Figures 1 to 3 The first assembly hole 12 is arranged corresponding to the first T-slot 13, and each first T-slot 13 is correspondingly provided with three first assembly holes 12, the three first assembly holes 12 are arranged at intervals along the width direction of the liner body 1, the first assembly hole 12 penetrates the liner body 1 and is connected to the first T-slot 13, and the second assembly hole 41 and the third assembly hole 23 are respectively arranged on the pin rod 4 and the pad 2 corresponding to the first assembly hole 12, the second assembly hole 41 penetrates the pin rod 4 horizontally, and the third assembly hole 23 is arranged in the T-slot and penetrates the pad 2. In actual use, the first assembly hole 12, the second assembly hole 41 and the third assembly hole 23 are coaxially arranged, and fastening bolts are inserted in the first assembly hole 12, the second assembly hole 41 and the third assembly hole 23, and the liner body 1 can be fixed on the rolling mill arch by the fastening bolts.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Laser cladding rolling mill lining, characterized in that: The invention comprises a liner body (1), wherein the liner body (1) comprises a working surface (101) and a mounting surface which are arranged opposite to each other, wherein the working surface (101) is used to withstand the impact of iron oxide powder, and the mounting surface is used to connect to a rolling mill arch. The working surface (101) is a wavy curved surface formed by smoothly connecting a plurality of arc surfaces, and a wear-resistant layer (11) is provided on the working surface (101) by laser cladding. The liner body (1) is provided with a plurality of first assembly holes (12) which penetrate from the working surface (101) to the mounting surface. The liner body (1) is a metal product having a hardness value lower than or equal to the hardness of the material of the rolling mill arch.

2. The laser cladding rolling mill liner according to claim 1, characterized in that: The thickness of the wear-resistant layer (11) is between 0.5 and 1.5 mm.

3. The laser cladding rolling mill liner according to claim 1, characterized in that: A backing plate (2) is detachably connected to the mounting surface, and the backing plate (2) is a wear-resistant engineering plastic product.

4. The laser cladding rolling mill liner according to claim 3, characterized in that: A buffer is provided between the lining plate body (1) and the pad (2).

5. The laser cladding rolling mill liner according to claim 3, characterized in that: A plurality of insertion holes are provided between the lining plate body (1) and the pad (2), and pin rods (4) for connecting the lining plate body (1) and the pad (2) are inserted and matched in the insertion holes.

6. The laser cladding rolling mill liner according to claim 5, characterized in that: The mounting surface is provided with a plurality of first T-shaped slots (13); the end surface of the backing plate (2) facing the liner body (1) is provided with a plurality of second T-shaped slots (21) corresponding to the plurality of first T-shaped slots (13); the first T-shaped slots (13) and the second T-shaped slots (21) are arranged opposite to each other; the insertion hole is formed between the first T-shaped slots (13) and the second T-shaped slots (21); the cross section of the insertion hole is in an I-shaped shape; the pin rod (4) is an I-shaped rod adapted to be inserted into the insertion hole.

7. The laser cladding rolling mill liner according to claim 6, characterized in that: The first T-shaped groove (13) is a through groove arranged transversely through the lining plate body (1), and the second T-shaped groove (21) is a through groove arranged transversely through the pad (2), and a plurality of the first T-shaped grooves (13) are arranged at intervals.

8. The laser cladding rolling mill liner according to claim 7, characterized in that: The backing plate (2) is provided with a positioning edge (22) for defining the position of the lining plate body (1).

9. The laser cladding rolling mill liner according to claim 8, characterized in that: There are a plurality of positioning ridges (22), and the plurality of positioning ridges (22) are arranged in the circumferential direction of the end surface of the pad (2) facing the lining body (1), and the lining body (1) is inserted between the plurality of positioning ridges (22).

10. The laser cladding rolling mill liner according to claim 6, characterized in that: The first assembly hole (12) is connected to the first T-shaped slot (13); the pin rod (4) and the backing plate (2) are respectively provided with a second assembly hole (41) and a third assembly hole (23) corresponding to the first assembly hole (12); the first assembly hole (12), the second assembly hole (41) and the third assembly hole (23) are coaxially arranged for inserting and fastening bolts.

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