CN116618871A - Repairing method for cracks and welding structure - Google Patents
Repairing method for cracks and welding structure Download PDFInfo
- Publication number
- CN116618871A CN116618871A CN202210197102.1A CN202210197102A CN116618871A CN 116618871 A CN116618871 A CN 116618871A CN 202210197102 A CN202210197102 A CN 202210197102A CN 116618871 A CN116618871 A CN 116618871A
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- CN
- China
- Prior art keywords
- path
- crack
- paths
- repairing
- welding
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- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000008439 repair process Effects 0.000 claims abstract description 17
- 238000005452 bending Methods 0.000 claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 37
- 229910052759 nickel Inorganic materials 0.000 claims description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 238000004372 laser cladding Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 8
- 229910000856 hastalloy Inorganic materials 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 229910001026 inconel Inorganic materials 0.000 claims description 5
- 229910000792 Monel Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 claims 3
- 238000005476 soldering Methods 0.000 claims 1
- 229910000601 superalloy Inorganic materials 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008646 thermal stress Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The repairing method and the welding structure of the crack are suitable for a component made of super alloy, and the repairing method of the crack comprises the following steps. First, a welding material is provided. And then welding the welding material on a crack along a bending type repairing path to form a welding structure. The bending type repairing path comprises a plurality of first paths and a plurality of second paths. The first path spans the crack, and two adjacent first paths overlap each other to form a film overlapping region. In addition, the second path is linked between two adjacent first paths. The repair method and the welding structure can reduce the manufacturing cost of the superalloy component and improve the overall yield of the superalloy component.
Description
Technical Field
The invention relates to a repairing method and a welding structure of a crack, in particular to a repairing method and a welding structure of a superalloy crack with a bending type repairing path.
Background
In the aerospace and energy industries, parts of the components are subject to high stress and corrosion in severe environments, so that nickel-based superalloys are selected as the main materials to resist the high stress and improve the corrosion resistance of the components. Wherein, the nickel-based superalloy has excellent high-temperature stress characteristics and anti-creep capability. And, generally, the nickel-base superalloy is subjected to 10000 times of operations at a temperature of at least 700 ℃. The nickel-base superalloy component is produced by casting, which is accomplished by adjusting the cooling rate, controlling the grain size and growth direction.
In addition, referring to fig. 1, during precision casting, the nickel-base superalloy component 7 is prone to component damage, cracking 71 or sand holes due to poor cooling rate control and mold design issues. Therefore, the cracks 71 of the nickel-base superalloy component 7 are typically repaired by welding with a welding rod (e.g., argon welding, laser welding) while simultaneously reducing thermal stresses and slowing down the cooling rate after welding in combination with pre-weld preheating. However, the use of pre-weld preheating reduces defects in the repair area, but greatly increases the cost of manufacturing the nickel-base superalloy component 7 and reduces overall yield (additional time is required for pre-weld preheating).
Therefore, it would be worthwhile for those skilled in the art to reduce the cost of manufacturing nickel-based superalloy components and increase the overall yield.
Disclosure of Invention
The invention provides a crack repairing method which can reduce the manufacturing cost of a superalloy component and improve the overall yield of the superalloy component.
The repairing method of the crack of the invention comprises the following steps:
first, a welding material is provided. And then welding the welding material on a crack along a bending type repairing path to form a welding structure. The bending type repairing path comprises a plurality of first paths and a plurality of second paths. The first path spans the crack, and two adjacent first paths overlap each other with a film overlapping region. In addition, the second path is linked between two adjacent first paths.
In the method for repairing a crack, the length of the first path is 2mm to 50mm.
In the above method for repairing a crack, the width of the first path is 0.5mm to 3mm.
In the method for repairing a crack, the width of the second path is the same as the width of the first path, and the length of the second path is 10% -70% of the width of the first path.
In the method for repairing a crack, the included angle between the first path and the second path is 40-150 degrees.
In the method for repairing the crack, the welding material is nickel-based metal, and the nickel content of the nickel-based metal is 30-100%.
In the above-described method for repairing cracks, the nickel-based metal is an Inconel (Inconel), meng Naier (Monel), hastelloy (Hastelloy) or MAR-M247 nickel-based alloy.
In the method for repairing a crack, the welded structure is at least one layer, and the overlapping area of the film layer occupies at least 30% of the area of the first path.
In the method for repairing the crack, the thickness of the welded structure is 0.1 mm-5 mm.
In the repair method of the crack, the crack is positioned on a substrate, and the welding material heats the substrate to 200-700 ℃ before being welded on the crack.
In the method for repairing a crack, the welding material is welded to the crack by argon welding, laser cladding or spraying. Wherein, the operation temperature of the laser cladding mode is 1200 ℃ to 1600 ℃.
It is another object of the present invention to provide a cracked welded structure that reduces the cost of manufacturing superalloy components and improves the overall yield thereof.
The welding structure of the crack of the invention comprises a welding material which is welded on a crack along a bending type repairing path. The bending type repairing path comprises a plurality of first paths and a plurality of second paths. The first paths cross the crack, and two adjacent first paths overlap each other with a film overlapping area. In addition, a second path is linked between two adjacent first paths.
In the above-described welded structure of the slit, the length of the first path is 2mm to 50mm.
In the above-described welded structure of the slit, the width of the first path is 0.5mm to 3mm.
In the above-mentioned crack welding structure, the width of the second path is the same as the width of the first path, and the length of the second path is 10% -70% of the width of the first path.
In the above-mentioned welded structure of cracks, the included angle between the first path and the second path is 40-150 degrees.
In the above-mentioned slit welding structure, the welding structure is at least one layer, and the film overlapping area occupies at least 30% of the area of the first path.
The thickness of the welded structure of the crack is 0.1 mm-5 mm.
The invention has the following advantages: the temperature of the repaired area (crack and area around the crack) is maintained through the repair path of the welded structure part repeating stack and back and forth to achieve the purpose of repairing and reducing thermal stress at the same time.
To achieve the foregoing and other objects, and in accordance with the purpose of the invention, as embodied and broadly described, a preferred embodiment of the present invention is illustrated and described below.
Drawings
Fig. 1 is a schematic view of a crack 71 of a conventional repair member.
FIG. 2 is a flow chart of a method for repairing a crack according to the present embodiment.
Fig. 3 is a schematic diagram of the folded repair path 3.
Fig. 4 is a schematic view of the welded structure 3W covering the slit 81.
Fig. 5 is a schematic diagram illustrating an angle θ1 between the first path 31 and the second path 32 in the left direction.
Fig. 6 is a schematic diagram illustrating an angle θ2 between the second path 32 and the first path 31 to the right.
Fig. 7-15 illustrate embodiments of forming a folded repair path 3.
Detailed Description
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for repairing a crack according to the present embodiment. The method for repairing the crack is suitable for a component 8 made of the superalloy, and comprises the following steps.
First, referring to step S1, a solder material is provided. Wherein the welding material is nickel-based metal, for example. And, the nickel-based metal is, for example, inconel (Inconel), meng Naier (Monel), hastelloy (Hastelloy), or MAR-M247 nickel-based alloy. Wherein, the nickel content of the nickel-based metal is 30-100%.
Next, referring to step S2, fig. 3 and fig. 4, the welding material is welded on a crack 81 along a bending repair path 3 to form a welded structure 3W, and the crack 81 is completely covered by the welded structure 3W. Wherein the welding material is welded on the crack by an argon welding mode, a laser cladding mode or a spraying mode. Wherein, when the laser cladding mode is used, the operation temperature is usually 1200 ℃ to 1600 ℃. In addition, the laser power used in the laser cladding method is 300W-1500W, and the moving speed of the laser source is 0.5 mm/s-15 mm/s. In addition, the powder supply gas used in the laser cladding mode is, for example, argon, the flow rate of the powder supply gas is 1L/min-20L/min, and the powder feeding rate used in the laser cladding mode is 0.3 g/min-10 g/min. In this way, the welding material is more advantageously welded to the crack.
In the above description, the folded repairing route 3 includes a plurality of first routes 31 and a plurality of second routes 32, the length of the first routes 31 is 2mm to 50mm, the width of the first routes 31 is 0.5mm to 3mm, and in a preferred embodiment, the lengths of all the first routes 31 are substantially the same, and the widths of all the first routes 31 are also substantially the same. That is, after subtracting the errors generated by the operation or other factors, the lengths of all the first paths 31 are the same, and the widths of all the first paths 31 are the same. In the present embodiment, the first path 31 is a welding path crossing the slit 81, and the formed welding structure 3W is at least one layer, and the thickness of the welding structure 3W is 0.1mm to 5mm. In fig. 3 and 4, in order to facilitate distinguishing between two adjacent first paths 31, the outlines of the two adjacent first paths 31 are indicated by a dotted line and a solid line, respectively.
Referring to fig. 3 again and referring to fig. 5 and fig. 6 simultaneously, fig. 5 is a schematic diagram of an included angle θ1 between the first path 31 and the second path 32 in the left direction, and fig. 6 is a schematic diagram of an included angle θ2 between the second path 32 and the first path 31 in the right direction. The second path 32 is an offset path that does not cross the slit 81, and the second path 32 is linked between two adjacent first paths 31. The first path 31 and the second path 32 on the left side have an angle θ1, and the first path 31 on the second side has an angle θ2, where the angle θ1 and the angle θ2 are, for example, 40 to 150 degrees, and in a preferred embodiment, the angle θ1 is the same angle θ2. However, in other embodiments, the angle θ1 may also be different from the angle θ2.
In addition, in the present embodiment, the width of the second path 32 is the same as the width of the first path 31, and the length of the second path 32 is 10% to 70% of the width of the first path 31. Thus, two adjacent first paths 31 overlap each other by a film overlapping region 31L, and the film overlapping region 31L occupies at least 30% of the area of the first paths 31. In addition, two adjacent second paths 32 are also overlapped with each other by a film overlapping region 32L. Therefore, compared with the conventional pre-welding preheating method, the crack repairing method of the present embodiment can achieve the repair of the crack 81 and the reduction of the thermal stress by maintaining the temperature of the repaired area (the crack and the area around the crack) through the partially repeated stack (the film overlapping area 31) and the first path 31 going back and forth. Therefore, the repairing method can indirectly reduce the manufacturing cost of the superalloy component and improve the overall yield of the component.
In the above-described embodiment, how the plurality of first paths 31 and the plurality of second paths 32 form the folded-type repair path 3 is not described, and a process of forming the folded-type repair path 3 will be described below with reference to fig. 7 to 15. And, the first paths and the second paths in fig. 7 to 15 are distinguished by using different symbols.
First, referring to fig. 7 to 9, the first path 311 crosses the slit 81, the tail end of the first path 311 is connected to the front end of the second path 321, the tail end of the second path 321 is connected back to the front end of the first path 312, and the first path 312 crosses the slit 81 again and forms a first film overlapping region 31L with the first path 311 on the left.
Referring to fig. 10 to 12, the tail end of the first path 312 is connected to the front end of the second path 322, and the tail end of the second path 322 is also connected back to the front end of the first path 313, and the first path 313 crosses the slit 81 again and forms a second film overlapping region 31L with the first path 312. Then, the tail end of the first path 313 is connected to the front end of the second path 323. The second path 323 and the second path 321 form a first film overlapping region 32L.
Referring to fig. 13 to 15, the tail end of the second path 323 is connected to the front end of the first path 314, and the first path 314 crosses the slit 81 again to form a third film overlapping region 31L with the first path 313. Then, the tail end of the first path 314 is connected to the front end of the second path 324, and the second path 324 and the second path 322 form a second film overlapping region 32L. Then, the tail end of the second path 324 is connected to the front end of the first path 315, and the first path 315 crosses the slit 81 and forms a fourth film overlapping region 31L with the first path 314. Then, the tail end of the first path 315 is connected to the front end of the second path 325, and the second path 325 and the second path 323 form a third film overlapping region 32L. In this way, the crack 81 completely covers the first paths 311, 312, 313, 314, 315, thereby forming the folded repair path 3. In brief, the first path 31 and the second path 32 are staggered welding paths and repeated a plurality of times until the crack 81 is completely covered by the welded structure 3W.
In fig. 7 to 15, the plurality of second paths 321, 322, 323, 324 do not cross the slit 81, but the second paths 321, 322, 323, 324, 325 ensure that the bent repair path 3 is a continuous and uninterrupted welding path.
In the above, the component 8 is, for example, a substrate, and the slit 81 is located on the substrate. In addition, if the substrate is heated to 200-700 ℃ before the welding material is welded to the crack, that is, before step S2 is performed, the thermal stress can be further reduced, the temperature difference between the repaired area and the component 8 can be reduced, and the occurrence rate of the crack can be effectively reduced.
In summary, the crack repairing method and the welding structure of the present invention achieve the repair of the crack of the superalloy component and the reduction of the thermal stress through the first path 31 of partially repeating the stack and back and forth, thereby indirectly reducing the manufacturing cost of the superalloy component and improving the overall yield thereof.
The invention is described above without limiting the scope of the claims. Modifications and variations which may be made by those skilled in the art without departing from the spirit or scope of the invention are intended to be included within the scope of the following claims.
Claims (18)
1. A method of repairing a crack, comprising:
providing a welding material; a kind of electronic device with high-pressure air-conditioning system
Welding the welding material on a crack along a bending type repairing path to form a welding structure;
wherein, this buckling type repair path includes:
a plurality of first paths crossing the crack, wherein two adjacent first paths are mutually overlapped with a film overlapping area; a kind of electronic device with high-pressure air-conditioning system
A plurality of second paths linked between two adjacent first paths.
2. The method of repairing a crack as claimed in claim 1, wherein the length of the first path is 2mm to 50mm.
3. The method of repairing a crack as claimed in claim 1, wherein the width of the first path is 0.5mm to 3mm.
4. The method of claim 1, wherein the width of the second path is equal to the width of the first path, and the length of the second path is 10% to 70% of the width of the first path.
5. The method of claim 1, wherein the first path and the second path have an included angle of 40-150 degrees.
6. The method of repairing cracks according to claim 1, wherein the welding material is nickel-based metal, and the nickel content of the nickel-based metal is 30% -100%.
7. The method of claim 6, wherein the nickel-based metal is nickel-in-nickel (Inconel), meng Naier (Monel), hastelloy (Hastelloy), or MAR-M247 (nickel-based alloy).
8. The method of claim 1, wherein the welded structure comprises at least one layer and the overlapping area of the film layer comprises at least 30% of the area of the first path.
9. The method of repairing cracks according to claim 1, wherein the thickness of the welded structure is 0.1mm to 5mm.
10. The method of claim 1, wherein the crack is located on a substrate and the solder material heats the substrate to 200 ℃ to 700 ℃ prior to soldering the substrate to the crack.
11. The method of repairing a crack as claimed in claim 1, wherein the welding material is welded to the crack by argon welding, laser cladding or spraying; wherein, the operation temperature of the laser cladding mode is 1200 ℃ to 1600 ℃.
12. A welded structure of cracks, comprising:
a welding material welded on a crack along a bending repair path;
wherein, this buckling type repair path includes:
a plurality of first paths crossing the crack, wherein two adjacent first paths are mutually overlapped with a film overlapping area; a kind of electronic device with high-pressure air-conditioning system
A plurality of second paths linked between two adjacent first paths.
13. The crack weld structure of claim 12, wherein the first path has a length of 2mm to 50mm.
14. The crack weld structure of claim 12, wherein the first path has a width of 0.5mm to 3mm.
15. The crack weld structure of claim 12, wherein the width of the second path is the same as the width of the first path and the length of the second path is 10% to 70% of the width of the first path.
16. The crack weld structure of claim 12, wherein the first path and the second path have an included angle of 40 degrees to 150 degrees.
17. The welded structure of claim 12, wherein the welded structure is at least one layer and the overlapping area of the film layer is at least 30% of the area of the first path.
18. The welded structure of cracks according to claim 12, wherein the welded structure has a thickness of 0.1mm to 5mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW111105057A TW202332530A (en) | 2022-02-11 | 2022-02-11 | Repairing method of crack |
| TW111105057 | 2022-02-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116618871A true CN116618871A (en) | 2023-08-22 |
Family
ID=82453790
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210197102.1A Pending CN116618871A (en) | 2022-02-11 | 2022-03-02 | Repairing method for cracks and welding structure |
| CN202220435328.6U Active CN217019112U (en) | 2022-02-11 | 2022-03-02 | Welding structure of crack |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220435328.6U Active CN217019112U (en) | 2022-02-11 | 2022-03-02 | Welding structure of crack |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN116618871A (en) |
| TW (1) | TW202332530A (en) |
-
2022
- 2022-02-11 TW TW111105057A patent/TW202332530A/en unknown
- 2022-03-02 CN CN202210197102.1A patent/CN116618871A/en active Pending
- 2022-03-02 CN CN202220435328.6U patent/CN217019112U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| TW202332530A (en) | 2023-08-16 |
| CN217019112U (en) | 2022-07-22 |
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