Repair structure and repair method for water-cooled grate plate of sintering machine single-roll crusher

Abstract

The invention provides a repairing structure and a repairing method for a water-cooled grate plate of a sintering machine single-roll crusher. The repairing structure comprises a contour layer, a multi-layer grid structure and a wear-resistant alloy layer. Through the combination of the multi-layer grid structure and the wear-resistant alloy layer, the structural strength of the repaired part is improved, and the fusion degree between the repaired structure and the water-cooling grid plate is guaranteed. The grids are of a staggered arrangement structure, so that the situation that the wear-resistant alloy layer is diluted during surfacing can be avoided, the strength of the wear-resistant alloy part in the grids is guaranteed, the surfacing effect is optimized, the adhesiveness and the wear resistance of the wear-resistant layer are improved, the labor cost is reduced, and the working efficiency is improved. The wear-resistant alloy layer is welded in an automatic surfacing manner, so that the labor cost and the labor intensity are reduced, the adhesiveness of the wear-resistant alloy layer is better, the wear resistance is stronger, and the service life of the water-cooling grate plate is effectively prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of water-cooled grate plate repair, and in particular to a repair structure and a repair method for a water-cooled grate plate of a single-roll crusher of a sintering machine. Background Art

[0002] During the operation of the sintering machine, the single-tooth roller and the water-cooled grate plate work together to crush the high-temperature sintered ore to a particle size that meets the production standards through the close extrusion of the tooth crown of the single-tooth roller and the water-cooled grate plate. The temperature of the high-temperature sintered ore can reach about 800°C. In this process, the water-cooled grate plate is required to have strong wear resistance in a high-temperature environment, otherwise the wear-resistant alloy layer of the water-cooled grate plate will fall off.

[0003] After the wear-resistant alloy layer of the water-cooled grate plate falls off, it needs to be repaired. The original repair method includes: first casting the wear-resistant alloy layer and then welding. Therefore, there are the following significant defects: it cannot ensure that the wear-resistant alloy layer and the matrix of the water-cooled grate plate form sufficient fusion strength. Therefore, under high temperature and high load working conditions, the alloy layer of the water-cooled grate plate is prone to peeling off again, affecting the performance and service life of the equipment.

[0004] In summary, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a repair structure and a repair method for a water-cooled grate plate of a single-roll crusher of a sintering machine, which can improve the adhesion of the wear-resistant alloy layer and extend the service life of the water-cooled grate plate.

[0006] In a first aspect, a repair structure for a water-cooled grate plate of a sintering machine single-roll crusher is provided, comprising:

[0007] A contour layer, which is determined according to the worn part and includes at least an upper top plate and a side vertical plate, and the area between the upper top plate, the side vertical plate and the bottom surface of the worn part is an area to be repaired;

[0008] A multi-layer grid structure, wherein the multi-layer grid structure is connected to the area to be repaired; the multi-layer grid structure comprises at least a partition and a grid plate, wherein the partition is used to divide the multi-layer grid structure into layers, and each layer of the grid structure is divided into a plurality of grids by a plurality of grid plates; and the grid plate is arranged perpendicular to the partition;

[0009] The wear-resistant alloy layer is filled in each of the grids by surfacing.

[0010] In one practicable manner, two adjacent layers of grid panels are arranged in a staggered manner.

[0011] In one practicable manner, the grid plate includes a top grid plate, an upper grid plate, a middle grid plate and a lower grid plate; the partition plate includes a middle partition plate and a lower partition plate.

[0012] In one feasible manner, the bottom of the top surface grid plate is connected to the upper surface of the upper top plate, the upper grid plate is connected between the upper top plate and the middle partition plate, the middle grid plate is connected between the middle partition plate and the lower partition plate, and the lower grid plate is connected between the lower partition plate and the bottom surface of the worn part.

[0013] In one feasible manner, the connection points between the top grid plate and the upper grid plate on the upper partition are staggered; the connection points between the upper grid plate and the middle grid plate on the middle partition are staggered; and the connection points between the middle grid plate and the lower grid plate on the lower partition are staggered.

[0014] According to the second aspect of the present application, a method for repairing a water-cooled grate plate of a sintering machine single-roll crusher is also provided, comprising the following steps:

[0015] S1. After the water-cooling grate plate is worn, the worn portion of the water-cooling grate plate is cut and removed;

[0016] S2. Welding a contour layer on the top and side surfaces of the worn part; the area between the contour layer and the bottom surface of the worn part is the area to be repaired;

[0017] S3, welding a plurality of mesh plates and partitions in the area to be repaired to form a multi-layer mesh structure;

[0018] S4. Repairing the water-cooling grate plate by surfacing welding a wear-resistant alloy layer in each of the grids.

[0019] In one practicable manner, in step S3, at least the following contents are included:

[0020] The multi-layer grid structure is welded in a bottom-up order, and the partition is used to divide the multi-layer grid structure into layers. Each layer of the grid structure is divided into multiple grids by multiple grid plates, and the grid plates on adjacent sides are staggered.

[0021] In one practicable manner, in step S2, the contour layer includes at least an upper top plate and side vertical plates.

[0022] In an practicable manner, in step S4, at least the following contents are included: after welding the wear-resistant alloy layer, the wear-resistant alloy layer is subjected to strength testing, and when the test is qualified, the water-cooling grate plate is repaired.

[0023] In one practicable manner, the mesh plate and the partition plate are welded in a sequence from bottom to top.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] In the technical solution of the present application, by setting a multi-layer grid structure as the framework of the repair part, surfacing is performed on the basis of the grid structure, the wear-resistant alloy layer can be completed in a partitioned manner, and the wear-resistant alloy in each grid can be fully welded, thereby ensuring the strength of the wear-resistant alloy layer. In addition, by combining the multi-layer grid structure with the wear-resistant alloy layer, the structural strength of the repair part is increased, and the fusion degree between the repair structure and the water-cooled grate plate is ensured. By adopting a staggered structure for the grid, the wear-resistant alloy layer can be avoided from being diluted during surfacing, so as to ensure the strength of the wear-resistant alloy part in the grid, optimize the surfacing effect, improve the adhesion and wear resistance of the wear-resistant layer, reduce labor costs, and improve work efficiency. By welding the wear-resistant alloy layer in the form of automatic surfacing, labor costs and labor intensity are reduced, the adhesion of the wear-resistant alloy layer is better, the wear resistance is stronger, and the service life of the water-cooled grate plate is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the area to be repaired in the water-cooled grate plate repair structure of the single-roll crusher of a sintering machine according to an embodiment of the present invention.

[0027] Figure 2 It is a front view of a water-cooled grate plate repairing structure of a sintering machine single-roll crusher according to an embodiment of the present invention.

[0028] Figure 3 It is a top view of the water-cooled grate plate repairing structure of the sintering machine single-roll crusher according to an embodiment of the present invention.

[0029] Figure 4 The present invention is a flowchart of a method for repairing a water-cooled grate plate of a single-roll crusher of a sintering machine according to an embodiment of the present invention.

[0030] The reference numerals are described as follows:

[0031] 1. Area to be repaired; 2. Contour layer; 3. Upper grid plate; 4. Upper grid; 5. Middle partition plate; 6. Middle grid plate; 7. Middle grid; 8. Lower partition plate; 9. Lower grid plate; 10. Lower grid; 11. Top surface grid plate; 12. Upper surface grid. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0036] According to the first aspect of the present application, see Figures 1 to 3 First, a repair structure for a water-cooled grate plate of a sintering machine single-roll crusher is provided, comprising:

[0037] A contour layer 2, which is determined according to the worn part of the water-cooled grate plate and includes at least an upper top plate and a side vertical plate, and the area between the upper top plate, the side vertical plate and the bottom surface of the worn part is an area to be repaired 1;

[0038] A multi-layer grid structure, wherein the multi-layer grid structure is connected to the area to be repaired 1; the multi-layer grid structure comprises at least a partition and a grid plate, wherein the partition is used to divide the multi-layer grid structure into layers, and each layer of the grid structure is divided into a plurality of grids by a plurality of grid plates; and the grid plate is arranged perpendicular to the partition;

[0039] It should be noted that the partition is arranged along the length direction of the water-cooling grate plate, and the grid plate is arranged along the thickness direction of the water-cooling grate plate.

[0040] The wear-resistant alloy layer is filled in each of the grids by surfacing.

[0041] In an practicable manner, two adjacent layers of mesh plates are arranged in a staggered manner, so that the multi-layer mesh structure is welded by skip welding to ensure that the wear-resistant alloy layer is not diluted.

[0042] In one practicable manner, Figure 2 and Figure 3 As shown, the grid plate includes a top grid plate 11, an upper grid plate 3, a middle grid plate 6 and a lower grid plate 9; the partition plate includes a middle partition plate 5 and a lower partition plate 8 arranged in parallel;

[0043] The bottom of the top surface grid plate 11 is connected to the upper surface of the upper top plate, and the top of the top surface grid plate 11 extends upward, forming an upper surface grid 12 between two adjacent top surface grid plates 11 along the length direction of the water-cooling grate plate.

[0044] The upper grid plate 3 is connected between the upper top plate and the middle partition plate 5, and an upper grid 4 is formed between two adjacent upper grid plates 3 along the length direction of the water-cooling grate plate.

[0045] The middle section grid plate 6 is connected between the middle section partition plate 5 and the lower section partition plate 8, and a middle section grid 7 is formed between two adjacent middle section grid plates 6 along the length direction of the water-cooling grate plate.

[0046] The lower grid plate 9 is connected between the lower partition plate 8 and the bottom surface of the worn part, and a lower grid 10 is formed between two adjacent lower grid plates 9 along the length direction of the water-cooling grate plate.

[0047] The connection points of the top surface grid plate 11 and the upper grid plate 3 on the upper partition plate are staggered; the connection points of the upper grid plate 3 and the middle grid plate 6 on the middle partition plate 5 are staggered; the connection points of the middle grid plate 6 and the lower grid plate 9 on the lower partition plate 8 are staggered.

[0048] The wear-resistant alloy layer is respectively filled in the upper grid 4, the middle grid 7 and the lower grid 10. By adopting the staggered arrangement of the grid plates, the wear-resistant alloy layer can be prevented from being diluted during surfacing, so as to ensure the strength of the wear-resistant alloy part in the grid.

[0049] It should be noted that the partition plate, the grid plate and the contour layer 2 are all made of steel plates with a thickness of 18-20 mm.

[0050] According to the second aspect of the present application, Figure 4 As shown, a method for repairing a water-cooled grate plate of a sintering machine single-roll crusher is also provided, comprising the following steps:

[0051] S1. After the water-cooling grate plate is worn, the worn portion of the water-cooling grate plate is cut and removed;

[0052] Specifically, the worn portion of the water-cooling grate plate is cut by carbon arc gouging to disintegrate the worn portion and fatigue layer of the water-cooling grate plate.

[0053] In an practicable manner, step S1 at least includes the following contents:

[0054] The edges and corners of the cut water-cooled grate plate are ground to remove the slag.

[0055] S2. Weld the contour layer 2 on the top and side surfaces of the worn part; the area 1 to be repaired is between the contour layer 2 and the bottom surface of the worn part; after the contour layer 2 is welded, grind the steel plate edges and corners of the contour layer 2 to remove the oxide slag for subsequent surfacing.

[0056] In an practicable manner, the profile layer 2 comprises at least an upper top plate and side vertical plates. The steel plate usage and steel plate size of the profile layer 2 are determined according to the worn parts and the shape of the original equipment, and the steel plate is cut to a predetermined size.

[0057] S3, welding a plurality of mesh plates and partitions in the area to be repaired 1 to form a multi-layer mesh structure;

[0058] It should be noted that the partition is arranged along the length direction of the water-cooling grate plate, the grid plate is arranged along the thickness direction of the water-cooling grate plate, and the multiple grid plates of each layer are evenly distributed along the length direction of the partition.

[0059] In an practicable manner, in step S3, at least the following contents are included: the multi-layer grid structure is welded in order from bottom to top, the partition is used to layer the multi-layer grid structure, and each layer of the grid structure is divided into multiple grids by multiple grid plates; the two adjacent layers of grid plates are staggered.

[0060] In one practicable manner, the grid plate is vertically connected to the partition plate.

[0061] It should be noted that, in step S3, 506 welding wire is used for welding to improve the adhesion of the subsequent wear-resistant alloy layer.

[0062] Specifically, step S3 includes the following contents:

[0063] S31. Weld a plurality of lower grid plates 9 on the bottom surface of the worn area along the length direction of the water-cooled grate plate, weld a lower partition plate 8 on the top of the plurality of lower grid plates 9, and form a lower grid 10 between two adjacent lower grid plates 9.

[0064] S32. Weld a plurality of middle-section grid plates 6 on the upper surface of the lower-section partition plate 8 along the length direction of the water-cooling grate plate; the plurality of middle-section grid plates 6 and the plurality of lower-section grid plates 9 are arranged alternately, and a middle-section grid 7 is formed between two adjacent middle-section grid plates 6.

[0065] S33, a middle section partition plate 5 is welded on the top of the middle section grid plate 6, and a plurality of upper section grid plates 3 are welded on the upper surface of the middle section partition plate 5 along the length direction of the water cooling grate plate, and the plurality of upper section grid plates 3 are arranged alternately with the plurality of middle section grid plates 6. The top of the upper section grid plate 3 is welded to the lower surface of the upper top plate; an upper section grid 4 is formed between two adjacent upper section grid plates 3.

[0066] S34, welding a plurality of upper surface grid plates 12 on the upper surface of the upper top plate along the length direction of the water-cooling grate plate, and forming an upper surface grid 12 between two adjacent top surface grid plates 11.

[0067] It should be noted that the size of each grid in the grid structure is determined by calculation based on actual wear conditions.

[0068] S4. Repairing the water-cooling grate plate by surfacing welding a wear-resistant alloy layer in each of the grids.

[0069] In one feasible method, in step S4, a wear-resistant plate automatic surfacing machine is used for fully automatic surfacing; compared with the previous manual surfacing method, it can improve the adhesion and wear resistance of the wear-resistant alloy layer, reduce labor costs, and improve repair efficiency.

[0070] In an practicable manner, in step S4, at least the following contents are included: after welding the wear-resistant alloy layer, the wear-resistant alloy layer is subjected to strength testing, and when the test is qualified, the water-cooling grate plate is repaired.

[0071] In summary, the present application sets a multi-layer grid structure as the framework of the repair part, and performs surfacing on the basis of the grid structure, so that the wear-resistant alloy layer can be completed in a partitioned manner, and the wear-resistant alloy in each grid can be ensured to be fully welded, thereby ensuring the strength of the wear-resistant alloy layer. And through the combination of the multi-layer grid structure and the wear-resistant alloy layer, the structural strength of the repair part is increased, and the fusion degree between the repair structure and the water-cooled grate plate is ensured. By adopting a staggered structure for the grid, the situation in which the wear-resistant alloy layer is diluted during surfacing can be avoided, so as to ensure the strength of the wear-resistant alloy part in the grid, optimize the surfacing effect, improve the adhesion and wear resistance of the wear-resistant layer, reduce labor costs, and improve work efficiency. By welding the wear-resistant alloy layer in the form of automatic surfacing, labor costs and labor intensity are reduced, so that the adhesion of the wear-resistant alloy layer is better, the wear resistance is stronger, and the service life of the water-cooled grate plate is effectively improved.

[0072] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A repair structure for a water-cooled grate plate of a sintering machine single-roll crusher, characterized in that: include: The contour layer at least includes an upper top plate and a side vertical plate, wherein the upper top plate is arranged on the top surface of the worn part of the water-cooling grate plate, and the side vertical plate is arranged on the side surface of the worn part of the water-cooling grate plate; the area between the upper top plate, the side vertical plate and the bottom surface of the worn part is the area to be repaired; A multi-layer grid structure, the multi-layer grid structure is connected to the area to be repaired; the multi-layer grid structure at least comprises a partition and a grid plate, the partition is used to divide the multi-layer grid structure into layers, and the grid plate is used to divide each layer of the grid structure into a plurality of grids; The wear-resistant alloy layer is filled in each of the grids by surfacing.

2. The repair structure of the water-cooled grate plate of the sintering machine single-roll crusher according to claim 1, characterized in that: The two adjacent layers of grid panels are arranged alternately.

3. The repair structure of the water-cooled grate plate of the sintering machine single-roll crusher according to claim 1, characterized in that: The grid plate comprises a top grid plate, an upper grid plate, a middle grid plate and a lower grid plate; the partition plate comprises a middle partition plate and a lower partition plate.

4. The repair structure of the water-cooled grate plate of the sintering machine single-roll crusher according to claim 3, characterized in that: The bottom of the top surface grid plate is connected to the upper surface of the upper top plate, the upper grid plate is connected between the upper top plate and the middle partition plate, the middle grid plate is connected between the middle partition plate and the lower partition plate, and the lower grid plate is connected between the lower partition plate and the bottom surface of the worn part.

5. The repair structure of the water-cooled grate plate of the sintering machine single-roll crusher according to claim 4, characterized in that: The connection points between the top grid plate and the upper grid plate on the upper partition are staggered; the connection points between the upper grid plate and the middle grid plate on the middle partition are staggered; the connection points between the middle grid plate and the lower grid plate on the lower partition are staggered.

6. A method for repairing a water-cooled grate plate of a sintering machine single-roll crusher, characterized in that: The following steps are involved: S1. After the water-cooling grate plate is worn, the worn portion of the water-cooling grate plate is cut and removed; S2. Welding a contour layer on the top and side surfaces of the worn part; the area between the contour layer and the bottom surface of the worn part is the area to be repaired; S3, welding a plurality of mesh plates and partitions in the area to be repaired to form a multi-layer mesh structure; S4. Repairing the water-cooling grate plate by surfacing welding a wear-resistant alloy layer in each of the grids.

7. The method for repairing the water-cooled grate plate of a sintering machine single-roll crusher according to claim 6, characterized in that: In step S3, the partition is used to divide the multi-layer grid structure into layers, and each layer of the grid structure is evenly divided into multiple grids by multiple grid plates; the adjacent grid plates on both sides are separated by the partition, and the adjacent grid plates on both sides are staggered.

8. The method for repairing the water-cooled grate plate of a sintering machine single-roll crusher according to claim 6, characterized in that: In step S2, the contour layer at least includes an upper top plate and side vertical plates.

9. The method for repairing a water-cooled grate plate of a sintering machine single-roll crusher according to claim 6, characterized in that: In step S4, at least the following contents are included: after welding the wear-resistant alloy layer, the wear-resistant alloy layer is subjected to strength testing, and when the test is qualified, the water-cooling grate plate is repaired.

10. The method for repairing a water-cooled grate plate of a sintering machine single-roll crusher according to claim 6, characterized in that: The grid plate and the partition plate are welded in a sequence from bottom to top.

Images