Metal-based rod piece surface damage in-situ repairing method and polishing tool

Abstract

The invention discloses an in-situ repairing method for surface damage of a metal-based rod piece and a polishing tool. The repairing method comprises the following steps that a to-be-repaired part of the metal-based rod piece is subjected to pretreatment; a welding wire made of the same material as the metal-based rod piece is adopted, and the repairing part is filled with the welding wire after being melted; and a special polishing tool is adopted to polish the repaired part. According to the method, the damaged part can be repaired in situ, and then the technical problems that an existing method for repairing the damaged part is numerous in working procedure, long in repairing time and high in cost are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship equipment repair, and particularly relates to a method for in-situ repair of surface damage of metal-based rods and a grinding tooling. Background Art

[0002] During the service process of equipment such as ships and offshore platforms, the surfaces of rods made of metal-based materials (such as guide rails, support arms, and tie rods) are often subject to damage such as wear and corrosion; and during the assembly of these components or the overhaul of the equipment, uncontrollable events such as bumps and scratches with other components will also occur, resulting in surface damage to the components. The common practice for repairing damaged components at present is to first disassemble the damaged components, then repair them through remanufacturing processes, and finally assemble and use the repaired components. However, the above-mentioned existing method for repairing damaged components requires processes of disassembly, repair, and assembly of the components, which has problems of numerous processes, long time, and high cost, and is not conducive to the rapid repair of equipment.

[0003] In summary, if a method for repairing damaged parts without disassembling the components and a grinding tooling used during the repair process can be provided, it is of great significance for the rapid repair of ship equipment. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and propose a method for in-situ repair of surface damage of metal-based rods and a grinding tooling, which can perform in-situ repair on damaged components, and solves the technical problems of numerous processes, long repair time, and high cost existing in the existing method for repairing damaged components.

[0005] To achieve the above technical purpose, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a method for in-situ repair of surface damage of metal-based rods, including the following steps: Perform pre-treatment on the repair part of the metal-based rod; Use a welding wire made of the same material as the metal-based rod, melt it, and fill it in the repair part; Use a special grinding tooling to grind the repair part.

[0006] In some embodiments, the pre-treatment of the repair part of the metal-based rod includes: Clean the damaged part and the parts connected thereto; Blow the cleaned part to remove surface stains.

[0007] In some embodiments, the welding wire is melted by a handheld laser welding device to fill the repair part.

[0008] In some embodiments, the repair method further includes: Performing a polishing treatment on the repaired part after grinding.

[0009] In a second aspect, the present invention provides a grinding tooling for an in-situ repair method of surface damage of a metal-based rod provided in the first aspect of the present invention. The grinding tooling includes a fixing member, a connecting member, and a grinding member. The fixing member is disposed outside the rod. A placement groove is formed on a side surface of the fixing member close to the rod and above the repair part. The connecting member passes through the fixing member and is disposed in the placement groove. The grinding member is fixed to one end of the connecting member close to the repair part. The grinding member can rotate and move up and down under the action of an external force through the connecting member to grind the repair part.

[0010] In some embodiments, the rod is a T-shaped rod. The fixing member includes a frame. The frame includes a first frame, a second frame, and a cross plate. The two second frames are connected to both sides of the cross plate. The two first frames are respectively connected to both sides of the two second frames. The two first frames are respectively connected and matched with both sides of the T-shaped rod. The two second frames and the cross plate form the placement groove. One end of the connecting member passes through the cross plate and is disposed in the placement groove and is connected to the grinding member.

[0011] In some embodiments, the rod is a cylindrical rod. The fixing member includes a cylinder. The cylinder is sleeved outside the cylindrical rod and is adapted to it. A placement groove is formed on a side surface of the cylinder close to the cylindrical rod. One end of the connecting member passes through the cylinder and is disposed in the placement groove and is connected to the grinding member.

[0012] In some embodiments, the cylinder includes a first cylinder, a second cylinder, and a locking member. The first cylinder and the second cylinder are respectively disposed outside the cylindrical rod. The two ends of the first cylinder and the second cylinder are respectively fixedly connected through the locking member. The placement groove is opened on the inner side surface of the first cylinder or the second cylinder.

[0013] In some embodiments, the width of the placement groove is greater than the width of the grinding member.

[0014] In some embodiments, the connecting member includes a connecting rod and a connecting plate. The fixing member is formed with a through hole. The connecting rod is slidably connected and matched with the through hole. The connecting plate is fixed to one end of the connecting rod located in the placement groove. The grinding member is fixed to the bottom of the connecting plate.

[0015] Compared with the prior art, the beneficial effects of the present invention mainly include: A method for in-situ repair of surface damage of metal-based rods provided by the present invention does not require disassembling the damaged parts for repair. Instead, by melting a welding wire made of the same material as the rod, the damaged part can be repaired by in-situ welding, and rapid repair can be achieved by grinding with a special grinding tooling. Therefore, the present invention has fewer processes, reduces the repair time and cost, and is beneficial to the rapid repair of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the process flow chart of the repair method of the present invention; Figure 2 is the schematic diagram of in-situ repair in the repair method of the present invention; Figure 3 is the schematic diagram of in-situ grinding in the repair method of the present invention; Figure 4 is the schematic diagram of the cooperation between the T-shaped rod and the grinding tooling of the present invention; Figure 5 is Figure 4 the perspective view of; Figure 6 is the schematic diagram of the cooperation between the cylindrical rod and the grinding tooling of the present invention.

[0017] DESCRIPTION OF THE REFERENCE NUMERALS: 100, grinding tooling, 110, fixing member, 111, frame, 1111, first frame, 1112, second frame, 1113, cross plate, 112, cylinder, 1121, first cylinder, 1122, second cylinder, 1123, locking member, 120, connecting member, 121, connecting rod, 122, connecting plate, 130, grinding member; 200, handheld laser welding equipment; 300, welding wire; 400, rod, 410, defect pit; 420, repair layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the 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.

[0019] Conventionally, the repair of surface coating damage of metal-based rods often involves disassembling the damaged parts for repair and then reinstalling them after repair, which has problems such as numerous processes, long repair time and high cost. To address this technical problem, the present invention provides a method for in-situ repair of surface damage of metal-based rods, which can solve the above technical problems.

[0020] It should be noted that the method for repairing the surface damage of the metal-based rod member of the present invention is applicable to, but not limited to, ships and offshore platform equipment. For the convenience of description, in the present invention, only the application to ship equipment is taken as an example for illustration, and the principle of applying this repair method to other types of equipment is essentially the same as that of applying to ship equipment, which will not be elaborated here one by one.

[0021] Figure 1 The process flow chart of the repair method of the present invention is given, Figure 2 and Figure 3 respectively give the schematic diagrams of in-situ repair and in-situ grinding. Then, as Figures 1-3 shown, a method for in-situ repair of the surface damage of a metal-based rod member provided by the present invention includes the following steps: S1, perform pre-treatment on the repair part; S2, use a welding wire made of the same material as the rod member, melt it and fill it in the repair part; S3, use a special grinding tooling to grind the repair part.

[0022] When using the repair method of the present invention, there is no need to disassemble the damaged parts for repair. After melting the welding wire made of the same material as the rod member and filling it, and then using a special grinding tooling for grinding, the damaged part can be quickly repaired in-situ. The process is simple, which can reduce the repair time and repair cost.

[0023] The following will give a detailed description of the in-situ repair method provided by the present invention.

[0024] As Figure 2 shown, after the surface of the rod member 400 is damaged, a defect pit 410 (i.e., the repair part) appears. The purpose of the present invention is to repair it through the in-situ repair method. After repair, as Figure 3 shown, a repair layer 420 is filled in the defect pit 410, and the protruding part is ground flat by a special grinding tooling 100, specifically as follows: Step 1, perform pre-treatment on the defect pit 410. The pre-treatment process specifically includes: Step 11, use alcohol or gasoline, etc. to clean the defect pit 410 and the connected parts thereof to remove oil stains; Step 12, use compressed air to blow the cleaned defect pit 410 to remove surface dust and other stains.

[0025] Step 2, select a welding wire 300 made of the same material as the rod member 400, and use a handheld laser device 200 to melt the welding wire 300 and fill it in the defect pit 410 to form a repair layer 420. At this time, the repair layer 420 is higher than the surface of other positions of the rod member 400; Step 3: Use a dedicated grinding tooling 100 to grind the protruding part of the repair layer 420; Step 4: Polish the ground part.

[0026] Among them, the structure of the dedicated grinding tooling 100 in the above-mentioned step 3 is as Figures 4-6 shown, including a fixing member 110, a connecting member 120 and a grinding member 130. The fixing member 110 is arranged outside the rod member 400. A placement groove is formed on one side of the fixing member 110 close to the rod member 400 and above the concave pit 410. The connecting member 120 passes through the fixing member 110 and is arranged in the placement groove. The grinding member 130 is fixed to one end of the connecting member 120 close to the concave pit 410. The grinding member 130 can rotate and move up and down under the action of an external force through the connecting member 120 to grind the repair part.

[0027] During use, the connecting member 120 can be rotated and moved up and down by an external force, so as to drive the grinding member 130 to rotate, so as to grind the protruding repair layer 420.

[0028] In one preferred embodiment, as Figure 4 and Figure 5 shown, the rod member 400 is a T-shaped rod member. The fixing member 110 includes a frame 111. The frame 111 includes a first frame 1111, a second frame 1112 and a cross plate 1113. The two second frames 1112 are connected to both sides of the cross plate 1113. The two first frames 1111 are respectively connected to both sides of the two second frames 1112. The two first frames 1111 are respectively connected and matched with both sides of the T-shaped rod member. The two second frames 1112 and the cross plate 1113 form the placement groove. One end of the connecting member 120 passes through the cross plate 1113 and is arranged in the placement groove and is connected to the grinding member 130.

[0029] In one preferred embodiment, as Figure 6 shown, the rod member 400 is a cylindrical rod member. The fixing member 110 includes a cylinder 112. The cylinder 112 is sleeved outside the cylindrical rod member and is adapted to it. A placement groove is formed on one side of the cylinder 112 close to the cylindrical rod member. One end of the connecting member 120 passes through the cylinder 112 and is arranged in the placement groove and is connected to the grinding member 130.

[0030] In one preferred embodiment, the cylinder 112 includes a first cylinder 1121, a second cylinder 1122 and a locking member 1123. The first cylinder 1121 and the second cylinder 1122 are respectively disposed outside the cylindrical rod. The two ends of the first cylinder 1121 and the second cylinder 1122 are fixedly connected through the locking member 1123. The placement groove is formed on the inner side surface of the first cylinder 1121 or the second cylinder 1122.

[0031] In one preferred embodiment, the width of the placement groove is greater than the width of the grinding member 130.

[0032] In one preferred embodiment, the grinding member 130 is a grindstone.

[0033] In one preferred embodiment, the connecting member 120 includes a connecting rod 121 and a connecting plate 122. The fixing member 110 is formed with a through hole. The connecting rod 121 is slidably connected to the through hole. The connecting plate 122 is fixed to one end of the connecting rod 121 located in the placement groove. The grinding member 130 is fixed to the bottom of the connecting plate 122.

[0034] In the present invention, a welding wire 300 made of the same material as the rod 400 is melted to fill the defect pit 410. After filling, there is a protrusion on the repair layer 420. At this time, for the T-shaped rod, the frame 111 is disposed outside the T-shaped rod. Under the action of an external force, the connecting member 120 is rotated, thereby driving the grinding member 130 to grind the protrusion; for the cylindrical rod, the cylinder 112 is sleeved outside the cylindrical rod. Under the action of an external force, the connecting member 120 is rotated, thereby driving the grinding member 130 to grind the protrusion.

[0035] In summary, a method for in-situ repair of surface damage of a metal-based rod provided by the present invention can perform in-situ repair on a damaged part without disassembling damaged components. A special grinding tooling can perform in-situ grinding on the filling to quickly restore the original size, and has the advantages of short repair cycle and low repair cost.

[0036] The specific embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for in-situ repair of surface damage of a metal-based rod, characterized in that, It includes the following steps: Perform pretreatment on the repair part of the metal-based rod; Use a welding wire made of the same material as the metal-based rod, melt it and fill it in the repair part; Use a special grinding tooling to grind the repair part.

2. The in-situ repair method for surface damage of a metal-based rod according to claim 1, characterized in that The pretreatment of the repair part of the metal-based rod includes: Clean the damaged part and the part connected thereto; Blow the cleaned part to remove surface stains.

3. The in-situ repair method for surface damage of a metal-based rod according to claim 2, wherein The step of using a welding wire made of the same material as the metal-based rod, melting it and filling it in the repair part includes: Melt the welding wire through a handheld laser welding device to fill the repair part.

4. The in-situ repair method for surface damage of a metal-based rod according to claim 3, wherein, The repair method further includes: Perform polishing treatment on the repaired part after grinding.

5. A grinding tooling for implementing the in-situ repair method of the surface damage of the metal-based rod as described in any one of claims 1-4, characterized in that, The grinding tooling includes a fixing member, a connecting member and a grinding member. The fixing member is arranged outside the rod. A placing groove is formed on a side surface of the fixing member close to the rod and above the repair part. The connecting member passes through the fixing member and is arranged in the placing groove. The grinding member is fixed to one end of the connecting member close to the repair part. The grinding member can rotate and move up and down under the action of an external force through the connecting member to grind the repair part.

6. The grinding tooling according to claim 5, wherein, The rod is a T-shaped rod. The fixing member includes a frame. The frame includes a first frame, a second frame and a cross plate. The two second frames are connected to both sides of the cross plate. The two first frames are respectively connected to both sides of the two second frames. The two first frames are respectively connected and matched with both sides of the T-shaped rod. The two second frames and the cross plate form the placing groove. One end of the connecting member passes through the cross plate and is arranged in the placing groove and is connected to the grinding member.

7. The grinding tooling according to claim 5, characterized in that, The rod is a cylindrical rod. The fixing member includes a cylinder body. The cylinder body is sleeved outside the cylindrical rod and is adapted to it. A placing groove is formed on a side surface of the cylinder body close to the cylindrical rod. One end of the connecting member passes through the cylinder body and is arranged in the placing groove and is connected to the grinding member.

8. The grinding tooling according to claim 7, wherein The cylinder body includes a first cylinder body, a second cylinder body and a locking member. The first cylinder body and the second cylinder body are respectively arranged outside the cylindrical rod. The two ends of the first cylinder body and the second cylinder body are respectively fixedly connected through the locking member. The placing groove is opened on the inner side surface of the first cylinder body or the second cylinder body.

9. The grinding tooling according to claim 6 or 7, characterized in that, The width of the placing groove is greater than the width of the grinding member.

10. The grinding tooling according to claim 6 or 7, characterized in that The connecting member includes a connecting rod and a connecting plate. The fixing member is formed with a through hole. The connecting rod is slidably connected and matched with the through hole. The connecting plate is fixed to one end of the connecting rod located in the placing groove. The grinding member is fixed to the bottom of the connecting plate.

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