CN114082961A - Method for repairing surface cracks of steel structure through additive manufacturing - Google Patents
Method for repairing surface cracks of steel structure through additive manufacturing Download PDFInfo
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- CN114082961A CN114082961A CN202111177710.8A CN202111177710A CN114082961A CN 114082961 A CN114082961 A CN 114082961A CN 202111177710 A CN202111177710 A CN 202111177710A CN 114082961 A CN114082961 A CN 114082961A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 82
- 239000010959 steel Substances 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 75
- 239000000654 additive Substances 0.000 title claims abstract description 74
- 230000000996 additive effect Effects 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008439 repair process Effects 0.000 claims abstract description 55
- 239000004065 semiconductor Substances 0.000 claims abstract description 13
- 238000004381 surface treatment Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000012805 post-processing Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 10
- 230000007547 defect Effects 0.000 claims description 10
- 238000005253 cladding Methods 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- 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
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/64—Treatment of workpieces or articles after build-up by thermal means
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
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- 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
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- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
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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
- 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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Abstract
The invention discloses a method for repairing cracks on the surface of a steel structure through additive manufacturing, which comprises the following steps: s1, performing surface treatment, namely performing surface treatment on the area of the steel structural member with cracks; s2, performing additive manufacturing and repairing, namely performing surface additive manufacturing and repairing on the repaired area processed in the step S1 by using a semiconductor laser, and covering a plurality of additive manufacturing and repairing layers on the surface of the repaired area by using a multi-layer additive manufacturing process, wherein the adjacent additive manufacturing and repairing layers are performed in an orthogonal mode to ensure isotropy of the repaired steel structure; and S3, post-processing, finishing additive manufacturing repair, and carrying out flaw detection and mass spectrometer element detection on the additive manufacturing repair layer. The method can repair the surface crack area of the steel structure member under the condition of not changing the original dynamic characteristics and the original use function of the steel structure member, thereby prolonging the service life of the steel structure member and reducing the later maintenance cost.
Description
Technical Field
The invention relates to the technical field of steel structure surface damage repair processes, in particular to a method for repairing cracks on a steel structure surface through additive manufacturing.
Background
The steel structure has the characteristics of high strength, light dead weight, high structural reliability, excellent earthquake resistance and the like, and is widely applied to large-span space structures, high-rise or super high-rise buildings and bridge structural engineering.
In the service stage of a steel structure, the structure is often required to have a long service life, and steel cracking is one of the main factors influencing the service life. In practical engineering, more cracks are generated particularly at the edges of steel member holes, steel structure joint joints, sharp concave-convex corners, steel structure bridge U-shaped ribs and the like due to stress-strain concentration or fatigue loads, and safety and durability problems can be caused, such as the problems of reduction of steel structure bearing capacity and stability, reduction of structure service life, high later-stage maintenance cost of cracking and the like.
In order to reduce the generation of cracks of a steel structure and effectively repair the cracks on the surface of the steel structure, the crack is controlled and repaired by various methods, for example, necessary control measures are taken in the production process of raw materials, and the construction process is optimized; when cracks are generated, crack development is controlled by punching crack-stopping holes; the cracks are repaired by a soldering method, a panel-inserting method, a plate-covering method, or the like. Although the strength and stability of the steel structure are well repaired, the dynamic characteristics and the use function of the steel structure are greatly changed due to the change of the force transmission path and the surface form of the repaired steel structure, and a plurality of problems are caused.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the embodiment of the invention provides a method for repairing cracks on the surface of a steel structure by optical cladding, which can repair the crack area on the surface of the steel structure under the condition of not changing the original dynamic characteristics and use functions of the steel structure, thereby prolonging the service life of the steel structure and reducing the later maintenance cost.
The method for repairing the surface cracks of the steel structure through the additive manufacturing comprises the following steps:
s1, performing surface treatment, namely performing surface treatment on the area of the steel structural member with cracks;
s2, performing additive manufacturing and repairing, namely performing surface additive manufacturing and repairing on the repaired area processed in the step S1 by using a semiconductor laser, and covering a plurality of additive manufacturing and repairing layers on the surface of the repaired area by using a multi-layer additive manufacturing process, wherein the adjacent additive manufacturing and repairing layers are performed in an orthogonal mode to ensure isotropy of the repaired steel structure;
and S3, post-processing, finishing additive manufacturing repair, and carrying out flaw detection and mass spectrometer element detection on the additive manufacturing repair layer.
In an alternative or preferred embodiment, the surface treatment in step S1 includes surface cleaning, crack area defect treatment, and desmear treatment.
In an alternative or preferred embodiment, in the step S2, each additive manufacturing repair layer has a thickness of 0.5 to 0.9 mm.
In an alternative or preferred embodiment, in step S2, the surface additive manufacturing repair is performed using steel powder.
In an alternative or preferred embodiment, in step S2, adjacent additive manufacturing repair layers, one of the additive manufacturing repair layers employs transverse scanning, and the other additive manufacturing repair layer employs longitudinal scanning.
In an optional or preferred embodiment, in the step S3, the post-treatment includes naturally cooling the repair area to normal temperature by using a cooling method of annealing at 500-650 ℃, and then polishing the surface of the additive manufacturing repair layer to be flat.
In an optional or preferred embodiment, the semiconductor laser adopts an integrated energy deposition cladding head, and the semiconductor laser integrates the functions of laser, powder feeding, water cooling and gas protection.
In an optional or preferred embodiment, the laser power of the semiconductor laser is 1000-3000W, the scanning speed is 10-30 mm/s, and the type of the steel powder is as follows: 316L, the diameter of a light spot is 5mm multiplied by 2.2mm, the lap joint rate is 50-60%, and the powder feeding rate is 16-18 g/min.
In an alternative or preferred embodiment, the steel strength of the steel structural member is Q235, Q345, Q460 or Q690.
In an alternative or preferred embodiment, the steel structural members are steel structural bridge U-shaped ribs.
Based on the technical scheme, the embodiment of the invention at least has the following beneficial effects: compared with the traditional mechanical workpiece crack repair, the method has the advantages that the repair of the cracking area of the steel structural member belongs to reduction type repair, the full metallurgical bonding is realized, the Heat Affected Zone (HAZ) caused by the completion of the repair is reduced, the compactness is good, and the durability and the fatigue resistance are improved relative to those of the base metal; the additive manufacturing repairing layer adopts a multi-layer orthogonal cladding additive manufacturing process, so that the isotropic mechanical property of the repaired steel structural member is ensured; the invention has controllable construction quality, accurate forming and good surface finish of the repaired steel structural member; the method has the advantages of high crack repairing speed and high repairing efficiency; the invention greatly reduces the subsequent maintenance cost of the project and has low comprehensive repair cost; in addition, the application of the invention can improve the utilization rate of materials, prolong the service life of the steel structural member and has high comprehensive repair benefit.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a plan view of a steel structural member in an embodiment of the present invention;
fig. 2 is a perspective view of a steel structural member in an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 2, a method of repairing cracks on a surface of a steel structure by additive manufacturing includes the steps of:
s1, surface treatment, the area of the steel structural member 1 where cracks occur is surface treated. Wherein the surface treatment comprises surface cleaning, crack area defect treatment and decontamination treatment.
In this embodiment, a metal cleaner is used to clean the surface of a crack-generating region of the steel structural member 1, a carbon arc gouging method is used to remove defects after drying, a layered gouging method is used to perform gouging while performing close and careful inspection until the defects are completely removed, and the gouging is polished to a V-shaped (or U-shaped) angle, which is convenient for additive manufacturing and repair.
And S2, performing additive manufacturing repair, namely performing surface additive manufacturing repair on the repaired area processed in the step S1 by using a semiconductor laser. The semiconductor laser adopts an integrated energy deposition cladding head, and integrates the functions of laser, powder feeding, water cooling and gas protection; in the semiconductor laser, the welding robot model: ABB, laser model: MAX (laser chinese core); the laser power of the semiconductor laser is 1000-3000W, the scanning speed is 10-30 mm/s, and the steel powder type is as follows: 316L, the diameter of a light spot is 5mm multiplied by 2.2mm, the lap joint rate is 50-60%, and the powder feeding rate is 16-18 g/min.
The surface additive manufacturing repair is carried out by adopting steel powder, specifically, the surface additive manufacturing repair is carried out under the protection of protective gas by adopting powder which has the same material quality as or similar to, the same strength as or similar to that of the steel material of the original steel structure member, the material similarity refers to that the steel material is adopted, and the strength value of the strength similarity refers to that the strength value is within the deviation range of 30%.
A multi-layer additive manufacturing process is adopted, so that a plurality of additive manufacturing repairing layers 2 are covered on the surface of a repairing area, and the adjacent additive manufacturing repairing layers 2 are performed in an orthogonal mode, so that the isotropy of the repaired steel structure is guaranteed. It will be appreciated that adjacent additive manufacturing repair layers 2, one of the additive manufacturing repair layers 2 employs transverse scanning and the other additive manufacturing repair layer 2 employs longitudinal scanning. In this embodiment, the "transverse direction" and the "longitudinal direction" are only used to describe orthogonal forms for additive manufacturing repair, and are relative relationships between two adjacent layers, and are not characteristic of a certain direction. In addition, the thickness of each additive manufacturing repair layer 2 is 0.5-0.9 mm.
And S3, post-processing, finishing additive manufacturing repair, and carrying out flaw detection and mass spectrometer element detection on the additive manufacturing repair layer 2.
And the post-treatment comprises the steps of naturally cooling the repair area to normal temperature by adopting a cooling mode of annealing at 500-650 ℃, and then polishing the surface of the additive manufacturing repair layer 2 to be flat.
In some of these embodiments, the steel strength of the steel structural member 1 is Q235, Q345, Q460, or Q690.
Compared with the traditional mechanical workpiece crack repair, the method has the advantages that the repair of the cracking area of the steel structural member belongs to reduction type repair, the full metallurgical bonding is realized, the Heat Affected Zone (HAZ) caused by the completion of the repair is reduced, the compactness is good, and the durability and the fatigue resistance are improved relative to those of the base metal; the additive manufacturing repairing layer adopts a multi-layer orthogonal cladding additive manufacturing process, so that the isotropic mechanical property of the repaired steel structural member is ensured; the invention has controllable construction quality, accurate forming and good surface finish of the repaired steel structural member; the method has the advantages of high crack repairing speed and high repairing efficiency; the invention greatly reduces the subsequent maintenance cost of the project and has low comprehensive repair cost; in addition, the application of the invention can improve the utilization rate of materials, prolong the service life of the steel structural member and has high comprehensive repair benefit.
In this embodiment, the steel structural member is a steel structural bridge U-shaped rib. Taking the U-shaped rib of the bridge with the steel structure of Q345 as an example, the defect treatment is carried out on the area which firstly has cracks under the actual condition, and then the method for repairing the cracks on the surface of the steel structure by additive manufacturing is applied to repair the cracks, and the method specifically comprises the following steps:
s1, performing surface treatment on the node reduction area of the U-shaped rib of the bridge with the Q345 steel structure, firstly, performing surface decontamination treatment on the reduction area of the steel section by using a metal cleaning agent, determining a crack defect treatment area, drying the crack defect treatment area, removing steel with a certain depth by using a carbon arc gouging machine, determining the specific depth according to the crack defect so as to remove the crack defect, performing a layered gouging method, and polishing the gouging machine into a U-shaped angle.
And S2, performing additive manufacturing on the reduced area of the U-shaped rib of the Q345 steel structure bridge processed in the step S1 by using a semiconductor laser, and obtaining an additive manufacturing repair layer with the thickness of each layer being 0.5-0.9 mm.
S3, performing post-treatment on the additive manufacturing repair layer, naturally cooling to normal temperature in a cooling mode of annealing at 500-650 ℃, and then polishing the surface of the additive manufacturing repair layer to be flat.
As described above, the present invention can be preferably realized.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A method of repairing cracks in a surface of a steel structure by additive manufacturing, comprising the steps of:
s1, performing surface treatment, namely performing surface treatment on the area of the steel structural member with cracks;
s2, performing additive manufacturing and repairing, namely performing surface additive manufacturing and repairing on the repaired area processed in the step S1 by using a semiconductor laser, and covering a plurality of additive manufacturing and repairing layers on the surface of the repaired area by using a multi-layer additive manufacturing process, wherein the adjacent additive manufacturing and repairing layers are performed in an orthogonal mode to ensure isotropy of the repaired steel structure;
and S3, post-processing, finishing additive manufacturing repair, and carrying out flaw detection and mass spectrometer element detection on the additive manufacturing repair layer.
2. The method for repairing cracks on a surface of a steel structure through additive manufacturing according to claim 1, wherein: in step S1, the surface treatment includes surface cleaning, crack region defect treatment, and desmear treatment.
3. The method for repairing cracks on a surface of a steel structure through additive manufacturing according to claim 1, wherein: in the step S2, the thickness of each additive manufacturing repair layer is 0.5-0.9 mm.
4. The method for repairing cracks on a surface of a steel structure through additive manufacturing according to claim 3, wherein: in the step S2, surface additive manufacturing repair is performed using steel powder.
5. The method for repairing cracks on a surface of a steel structure through additive manufacturing according to claim 4, wherein: in the step S2, adjacent additive manufacturing repair layers, one additive manufacturing repair layer employs transverse scanning, and the other additive manufacturing repair layer employs longitudinal scanning.
6. The method for repairing cracks on a surface of a steel structure through additive manufacturing according to claim 1, wherein: in the step S3, post-processing includes that a cooling mode of annealing at 500-650 ℃ is adopted for the repair area, the repair area is naturally cooled to normal temperature, and then the surface of the additive manufacturing repair layer is polished to be flat.
7. The method for repairing cracks on a surface of a steel structure by additive manufacturing according to any one of claims 1 to 6, wherein: the semiconductor laser adopts an integrated energy deposition cladding head, and integrates the functions of laser, powder feeding, water cooling and gas protection.
8. The method for repairing cracks on a surface of a steel structure through additive manufacturing according to claim 7, wherein: the laser power of the semiconductor laser is 1000-3000W, the scanning speed is 10-30 mm/s, and the steel powder type is as follows: 316L, the diameter of a light spot is 5mm multiplied by 2.2mm, the lap joint rate is 50-60%, and the powder feeding rate is 16-18 g/min.
9. The method for repairing cracks on a surface of a steel structure by additive manufacturing according to any one of claims 1 to 6, wherein: the steel strength of the steel structural member is Q235, Q345, Q460 or Q690.
10. The method for repairing cracks on a surface of a steel structure through additive manufacturing according to claim 9, wherein: the steel structure member is a U-shaped rib of a steel structure bridge.
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| CN202111177710.8A CN114082961A (en) | 2021-10-09 | 2021-10-09 | Method for repairing surface cracks of steel structure through additive manufacturing |
| PCT/CN2021/124594 WO2023056663A1 (en) | 2021-10-09 | 2021-10-19 | Method for repairing crack on surface of steel structure by additive manufacturing |
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| CN202111177710.8A CN114082961A (en) | 2021-10-09 | 2021-10-09 | Method for repairing surface cracks of steel structure through additive manufacturing |
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2021
- 2021-10-09 CN CN202111177710.8A patent/CN114082961A/en active Pending
- 2021-10-19 WO PCT/CN2021/124594 patent/WO2023056663A1/en unknown
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| CN102259187A (en) * | 2011-04-01 | 2011-11-30 | 周明 | Method and device for manufacturing and repairing composite roll with high performance through laser spray forming |
| US20170002978A1 (en) * | 2015-07-01 | 2017-01-05 | Keystone Engineering Company | Method of fabricating space satellite tank components utilizing additive manufacturing and spin forming |
| US20190176273A1 (en) * | 2016-05-18 | 2019-06-13 | General Electric Company | Component and method of forming a component |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142702A (en) * | 2022-07-18 | 2022-10-04 | 华南理工大学 | Method for repairing earthquake damage beam-column bolted joint based on laser material increase technology |
| CN115319101A (en) * | 2022-08-27 | 2022-11-11 | 中国长江电力股份有限公司 | Method for repairing Babbitt metal tile through laser cladding |
| CN115319101B (en) * | 2022-08-27 | 2023-06-13 | 中国长江电力股份有限公司 | Method for repairing Babbitt metal tile by laser cladding |
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| Publication number | Publication date |
|---|---|
| WO2023056663A1 (en) | 2023-04-13 |
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Application publication date: 20220225 |