CN115283700A - Defect repairing device and method for metal structural part - Google Patents
Defect repairing device and method for metal structural part Download PDFInfo
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- CN115283700A CN115283700A CN202210938615.3A CN202210938615A CN115283700A CN 115283700 A CN115283700 A CN 115283700A CN 202210938615 A CN202210938615 A CN 202210938615A CN 115283700 A CN115283700 A CN 115283700A
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- 230000007547 defect Effects 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 230000008439 repair process Effects 0.000 claims abstract description 81
- 239000000843 powder Substances 0.000 claims abstract description 50
- 238000005242 forging Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 31
- 239000011261 inert gas Substances 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 2
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000008358 core component Substances 0.000 abstract description 3
- 239000000306 component Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 239000007790 solid phase Substances 0.000 description 5
- 239000000945 filler Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/10—Formation of a green body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F2007/068—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts repairing articles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention provides a defect repairing device and a defect repairing method for a metal structural part, which comprise a feeding device, wherein a working assembly is connected to the tail end of a multi-shaft mechanical arm, the feeding device is arranged on a base of the multi-shaft mechanical arm or near the base, and a feeding pipe connected with the feeding device is communicated with a powder channel of the working assembly; in the defect repairing process, powder is fed into the working assembly by means of the feeding device and the feeding pipe; in the defect repairing process, the rotating speed of the tool head is controlled to be 400-8000 rpm, the advancing speed of the tool head is controlled to be 100-500 mm/min, and the axial forging pressure is controlled to be 1000-3000N. The invention not only greatly simplifies the structure of the defect repair device, but also changes the structure and the arrangement mode of the core components, so that the volume of the defect repair device is greatly reduced, and the facility cost is greatly reduced; and has the advantages of high defect repair efficiency and the like.
Description
Technical Field
The application belongs to the technical field of solid phase repair, and particularly relates to a defect repair device and a defect repair method for a metal structural part.
Background
The restoration and reuse of metal structural members are the mainstream direction for the development of the fields of weaponry, petrochemical industry, aerospace, naval vessels, ships and the like. At present, the repair technology is mainly divided into two aspects: a repair method based on melting is developed on the basis of traditional fusion welding by taking electric arc, laser and the like as heat sources, but the method is difficult to be applied to large-size defect repair, and has the problems of narrow application field, low repair efficiency and the like; the other method is a solid phase repair method developed on the basis of friction stir welding by taking frictional heat and deformation heat generated by mutual movement of materials as heat sources.
The prior U.S. patent documents: US2009/0200275A1 discloses an advanced solid phase additive manufacturing technique, in which a filler material is deposited on the surface of a substrate by friction heat generation between the filler material and the substrate, and a deposited layer with good bonding integrity is obtained by layer-by-layer accumulation; US2020/0306869A1 discloses a solid-state additive manufacturing system, with which various processes of additive manufacturing, repair, connection, etc. may be implemented; chinese patent document CN114423588a discloses a solid state manufacturing system having a hollow for receiving feed material, a friction die rotatably coupled near an end of a sleeve, the friction die and the sleeve being rotatable relative to each other along an axis of rotation and configured to generate frictional heat, thereby heating a small portion of the feed material within the hollow of the sleeve to a ductile state. However, the conventional additive manufacturing equipment has the problem of high axial forging pressure, and for example, the solid-phase repair of steel powder as a raw material is taken as an example, the axial forging pressure is usually about 7000N, the rotating speed is about 350rpm, and the advancing speed is about 300mm/min; the raw material is used for solid-phase repair of the aluminum powder, the axial forging pressure is slightly smaller than that of the steel powder, the corresponding rotating speed is about 450rpm, and the advancing speed is about 127mm/min.
More critically, as mentioned above, the solid additive manufacturing system has the problems of complex structure, large volume, large occupied space (usually about 50 cubic meters of space is needed to install the whole equipment), high facility cost and the like, and particularly, flexible in-place repair cannot be realized for metal structural members in different occasions.
Disclosure of Invention
The invention aims to provide a defect repairing device and a defect repairing method for a metal structural part, which are at least used for solving the technical problem that flexible in-place repairing can not be realized for the metal structural part in different occasions in the prior art.
The purpose of the invention is realized by adopting the following technical scheme.
The utility model provides a defect repair device of metallic structure spare, includes feedway, its characterized in that: the feeding device is arranged on the base of the multi-shaft mechanical arm or near the base, and a feeding pipe connected with the feeding device is communicated with a powder channel of the working assembly; in the defect repairing process, powder is fed into the working assembly by means of the feeding device and the feeding pipe.
Furthermore, the working assembly comprises a bearing structure, a rotating main shaft and a tool head which are sequentially connected from top to bottom, a powder passage is arranged on the bearing structure, the rotating main shaft is provided with a hollow cavity, the tool head is provided with a discharge passage, and the powder passage, the hollow cavity and the discharge passage are coaxially arranged and are communicated with each other.
Furthermore, a power device of the rotating main shaft is arranged on the rotating main shaft, and the power device synchronously rotates along with the rotating main shaft; the rotating main shaft is rotatably connected with the bearing structure through a bearing.
Preferably, the radial section of the discharge channel of the tool head is square, circular or star-shaped, and the radial section area of the discharge channel is 20-50% of the radial section area of the tool head.
Preferably, the diameter of the tool head is 5-50mm.
Furthermore, the feeding device adopts a pneumatic powder feeding structure, and inert gas is introduced into the feeding device so as to realize feeding of the inert gas and the powder into the powder channel.
A defect repair method adopting the defect repair device is characterized by comprising the following steps:
and 3, controlling the working assembly to move according to the repair path by operating the multi-axis mechanical arm, and stacking layer by layer to realize defect repair until the defect repair is finished.
Preferably, the rotation speed of the tool head is controlled to 400 to 8000rpm, the advancing speed of the tool head is controlled to 100 to 500mm/min, and the axial forging pressure is controlled to 1000 to 3000N.
Preferably, the filling material is aluminum alloy powder, magnesium alloy powder, copper alloy powder, nickel-based high-temperature alloy powder and high-strength steel powder.
More preferably, the tool bit is controlled to a speed of 6000rpm to 8000rpm and the axial forging force is controlled to 1000 to 1850N.
In order to further optimize the properties of the repaired tissue, the filling material is controlled to fall from the powder channel into the repair area in a free-fall motion in steps 2 and 3.
Has the advantages that:
1. due to the adoption of the defect repairing device with the specific structure, the structure of the defect repairing device is greatly simplified, the structure and the arrangement mode of core components (a feeding device and an action mechanism) are changed, the volume of the defect repairing device is greatly reduced, the occupied space of the defect repairing device is reduced from the original 50m to about 15m and within the year, and meanwhile, the facility cost is greatly reduced;
2. by adopting the defect repairing device with the specific structure, the flexible in-place repairing can be realized aiming at metal structural members in different occasions, the metal structural members can be quickly transferred and in-place, and the defect repairing device has the advantages of light weight and simplicity;
3. the invention has the advantage of high defect repairing efficiency, and can reach 3000-5000cm for light materials such as aluminum alloy and the like 3 The repair speed is/h; the invention also has the advantages of low axial forging pressure and high rotating speed;
4. the method for repairing the defects of the metal component can avoid the coarsening of the structure and the dissolution of the strengthening phase caused by the overheating of the material, has high strength in the repairing area, can reduce the residual stress of the material in the repairing area, and has good uniformity of the structure in the repairing area;
5. the scheme of the invention is adopted to repair the defects of the metal component, the jacking and feeding procedure in the traditional mode is omitted, and the metal component is not influenced by the loading of high load.
6. The scheme of the invention is particularly suitable for repairing large-size defects of metal components.
Drawings
FIG. 1 is a schematic view of a defect repairing apparatus according to an embodiment.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, which are described herein for purposes of illustration only and are not intended to be limiting.
Example 1
As shown in fig. 1, the defect repairing device for the metal structural part comprises a feeding device 6, a working assembly is connected to the tail end of a multi-shaft mechanical arm 7, the feeding device 6 is arranged on a base 8 of the multi-shaft mechanical arm 7 or near the base 8, and a feeding pipe 5 connected with the feeding device 6 is communicated with a powder channel 9 of the working assembly; in the defect repairing process, powder is fed into the working assembly by means of the feeding device 6 and the feeding pipe 5. The working assembly comprises a bearing structure 4, a rotating main shaft 2 and a tool head 1 which are sequentially connected from top to bottom, wherein a powder passage 9 is arranged on the bearing structure 4, the rotating main shaft 2 is provided with a hollow cavity 3, a discharge passage 12 is arranged on the tool head 1, and the powder passage 9, the hollow cavity 3 and the discharge passage 12 are coaxially arranged and are mutually communicated; the power device 10 of the rotating main shaft 2 is arranged on the rotating main shaft 2, and the power device 10 rotates synchronously with the rotating main shaft 2; the rotating spindle 2 is rotatably connected to the carrying structure 4 by means of bearings. The feeding device 6 adopts a pneumatic powder feeding structure, and inert gas is introduced into the feeding device 6 to realize that the inert gas and the powder are fed into the powder channel 9 together, namely the powder is conveyed along the feeding pipe 5 by introducing the inert gas. In this embodiment: the radial section of the discharge channel 12 of the tool head 1 is circular, the diameter of the tool head 1 is 10mm, and the radial section area of the discharge channel 12 is 35% of the radial section area of the tool head 1.
A defect repairing method using the defect repairing apparatus of the present embodiment, two locations of a corrosion region on an equipment bearing plate (aluminum alloy), one of the processed defects having a depth of 5mm (deepest) and an area of about 22cm, and the other processed defect having a depth of 3.2mm (deepest) and an area of about 28cm, the method comprising the following steps:
step 3, controlling the working assembly to move according to a repair path by operating the multi-axis mechanical arm 7, controlling the advancing speed of the tool head 1 to be 200mm/min, and accumulating layer by layer to realize defect repair until the defect repair is finished;
in the step 2 and the step 3, the filling material is enabled to fall into the repair area from the powder passage 9 in a free-falling body movement mode by adjusting the powder feeding rate and the fan power of the feeding device 6;
and 4, aligning the tool head 1 of the working assembly to the repair starting position of the repair path at the next defect 11, and repeating the step 2 and the step 3.
Example 2
The defect repair device used is referred to in example 1, and it is mainly different from the defect repair device in example 1 in that: the radial section of the discharge channel 12 of the tool head 1 is circular, the diameter of the tool head 1 is 15mm, and the radial section area of the discharge channel 12 is 20% of the radial section area of the tool head 1. A defect repairing method, a defect processed on an equipment baffle (aluminum alloy) has a depth of 3.5mm (deepest) and an area of about 44cm, and has the following concrete steps:
step 3, controlling the working assembly to move according to a repair path by operating the multi-axis mechanical arm 7, controlling the advancing speed of the tool head 1 to be 180mm/min, and accumulating layer by layer to realize defect repair until the defect repair is finished;
in step 2 and step 3, the filling material is made to fall from the powder passage 9 into the repair area in a free-fall movement manner by adjusting the powder feeding rate and the fan power of the feeding device 6.
Example 3
The defect repair apparatus used is referred to as example 1, which is mainly different from the defect repair apparatus in example 1 in that: the radial section of the discharge channel 12 of the tool head 1 is rectangular, the diameter of the tool head 1 is 30mm, and the radial section area of the discharge channel 12 is 30% of the radial section area of the tool head 1. A defect repairing method comprises the following specific steps:
step 3, controlling the working assembly to move according to a repair path by operating the multi-axis mechanical arm 7, controlling the advancing speed of the tool head 1 to be 150mm/min, and accumulating layer by layer to realize defect repair until the defect repair is finished;
in step 2 and step 3, the filling material is made to fall from the powder passage 9 into the repair area in a free-fall movement manner by adjusting the powder feeding rate and the fan power of the feeding device 6.
Example 4
The defect repair apparatus used is referred to as example 1, which is mainly different from the defect repair apparatus in example 1 in that: the radial section of the discharge channel 12 of the tool head 1 is circular, the diameter of the tool head 1 is 40mm, and the radial section area of the discharge channel 12 is 40% of the radial section area of the tool head 1. A defect repairing method comprises the following specific steps:
and 3, controlling the working assembly to move according to the repair path by operating the multi-axis mechanical arm 7, controlling the advancing speed of the tool head 1 to be 100mm/min, and accumulating layer by layer to realize defect repair until the defect repair is finished.
Example 5
The defect repair apparatus used is referred to as example 1, which is mainly different from the defect repair apparatus in example 1 in that: the tool head 1 is rotated at a preset speed of 8000rpm and the multi-axis robot 7 is then operated to cause the tool head 1 to generate an axial forging pressure 1510N to begin plasticizing the filler material.
Due to the adoption of the defect repairing device with the specific structure, the structure of the defect repairing device is greatly simplified, the structure and the arrangement mode of core components (a feeding device and an action mechanism) are changed, the volume of the defect repairing device is greatly reduced, the occupied space of the defect repairing device is reduced from the original 50m to about 15m and within the transportation, and meanwhile, the facility cost is greatly reduced; by adopting the defect repairing device with the specific structure, the flexible in-place repairing can be realized aiming at metal structural members in different occasions, the metal structural members can be quickly transferred and in-place, and the defect repairing device has the advantages of light weight and simplicity; the invention has the advantage of high defect repair efficiency, and can reach 3000-5000cm for light materials such as aluminum alloy and the like 3 The repair speed is/h; the method for repairing the defects of the metal component can avoid the coarsening of the structure and the dissolution of the strengthening phase caused by the overheating of the material, has high strength in the repair area, can reduce the residual stress of the material in the repair area, and repairs the metal componentThe tissue uniformity of the complex region is good; the scheme of the invention is adopted to repair the defects of the metal component, so that the jacking feeding procedure in the traditional mode is omitted, and the metal component is not influenced by the loading of high load; the invention is particularly suitable for repairing large-size (defect area exceeding 20 cm) defects of a metal component.
Claims (10)
1. A defect repairing device for a metal structural part comprises a feeding device (6), and is characterized in that: the working assembly is connected to the tail end of the multi-axis mechanical arm, the feeding device (6) is arranged on the base (8) of the multi-axis mechanical arm or near the base (8), and the feeding pipe (5) connected with the feeding device (6) is communicated with the powder channel (9) of the working assembly; in the defect repairing process, powder is fed into the working assembly by means of the feeding device (6) and the feeding pipe (5).
2. The defect repair apparatus of claim 1, wherein: the working assembly comprises a bearing structure (4), a rotating main shaft (2) and a tool head (1) which are sequentially connected from top to bottom, a powder passage (9) is arranged on the bearing structure (4), the rotating main shaft (2) is provided with a hollow cavity (3), the tool head (1) is provided with a discharge passage (12), and the powder passage (9), the hollow cavity (3) and the discharge passage (12) are coaxially arranged and are communicated with one another.
3. The defect repair apparatus according to claim 2, wherein: the power device (10) of the rotating main shaft (2) is arranged on the rotating main shaft (2), and the power device (10) synchronously rotates along with the rotating main shaft (2); the rotating main shaft (2) is rotatably connected with the bearing structure (4) through a bearing.
4. The defect repair apparatus of claim 3, wherein: the radial section of the discharging channel (12) of the tool head (1) is square, circular or star-shaped, and the radial section area of the discharging channel (12) is 20-50% of the radial section area of the tool head (1).
5. The defect repair apparatus according to claim 4, wherein: the diameter of the tool head (1) is 5-50mm.
6. The defect repair apparatus of claim 5, wherein: the feeding device (6) adopts a pneumatic powder feeding structure, and inert gas is introduced into the feeding device (6) so as to realize feeding of the inert gas and the powder into the powder channel (9).
7. A defect repair method using the defect repair apparatus according to any one of claims 1 to 6, characterized by the steps of:
step 1, installing a feeding device (6) and a base (8) of a multi-axis mechanical arm near a defect to be repaired, installing the multi-axis mechanical arm and a working assembly, aligning a tool head (1) of the working assembly to a repair initial position of a repair path, and filling a filling material into a powder channel (9) of a rotary spindle (2);
step 2, starting the defect repairing device to enable the tool head (1) to rotate at a preset speed, and then operating the multi-shaft mechanical arm to enable the tool head (1) to generate axial forging pressure to plasticize the filling material;
and 3, controlling the working assembly to move according to the repair path by operating the multi-axis mechanical arm, and stacking layer by layer to realize defect repair until the defect repair is finished.
8. The defect repair method according to claim 7, wherein: the rotating speed of the tool head (1) is controlled to be 400 rpm-8000 rpm, the advancing speed of the tool head (1) is controlled to be 100 mm/min-500 mm/min, and the axial forging pressure is controlled to be 1000-3000N.
9. The defect repair method according to claim 8, wherein: the filling materials are aluminum alloy powder, magnesium alloy powder, copper alloy powder, nickel-based high-temperature alloy powder and high-strength steel powder; the rotating speed of the tool head (1) is controlled to be 6000 rpm-8000 rpm, and the axial forging pressure is controlled to be 1000-1850N.
10. The defect repair method according to claim 8, wherein: in steps 2 and 3, the filling material is controlled to fall from the powder channel (9) into the repair area in a free-fall movement.
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| CN202210938615.3A CN115283700A (en) | 2022-08-05 | 2022-08-05 | Defect repairing device and method for metal structural part |
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| CN202210938615.3A CN115283700A (en) | 2022-08-05 | 2022-08-05 | Defect repairing device and method for metal structural part |
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| CN113977188A (en) * | 2021-12-15 | 2022-01-28 | 北京工业大学 | Solid-phase repair tool and method for surface defects of metal material |
| CN114423588A (en) * | 2019-08-20 | 2022-04-29 | 密歇根大学董事会 | Solid state manufacturing systems and processes suitable for extrusion, additive manufacturing, coating, repair, welding, forming, and material production |
| CN114523189A (en) * | 2022-02-28 | 2022-05-24 | 航天工程装备（苏州）有限公司 | Rod material stirring friction additive manufacturing device and method |
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2022
- 2022-08-05 CN CN202210938615.3A patent/CN115283700A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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