CN112828308A - Zirconium alloy framework laser additive manufacturing method - Google Patents
Zirconium alloy framework laser additive manufacturing method Download PDFInfo
- Publication number
- CN112828308A CN112828308A CN202011625502.5A CN202011625502A CN112828308A CN 112828308 A CN112828308 A CN 112828308A CN 202011625502 A CN202011625502 A CN 202011625502A CN 112828308 A CN112828308 A CN 112828308A
- Authority
- CN
- China
- Prior art keywords
- laser
- zirconium alloy
- additive manufacturing
- framework
- grillwork
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910001093 Zr alloy Inorganic materials 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 239000000654 additive Substances 0.000 title claims abstract description 32
- 230000000996 additive effect Effects 0.000 title claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000003892 spreading Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract 2
- 238000001816 cooling Methods 0.000 claims description 4
- 239000003758 nuclear fuel Substances 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 239000000446 fuel Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
Abstract
The invention belongs to the technical field of nuclear fuel element manufacturing, and particularly relates to a zirconium alloy grid laser additive manufacturing method. Establishing a three-dimensional model of the framework, designing a support structure for the hollow part of the framework, slicing and subdividing, and performing laser material increase manufacturing on the zirconium alloy framework; and carrying out heat treatment on the manufactured grillwork. The parameter range of the zirconium alloy grid frame laser additive manufacturing is as follows: the laser power is 200W-250W, the laser scanning speed is 1000 mm/s-1100 mm/s, the laser scanning interval is 0.08-0.12 mm, and the powder spreading thickness of the zirconium alloy powder is 0.03-0.05 mm. The laser forming technological parameters of the supporting structure are as follows: the laser power was 100W, the laser scanning pitch was 0.11mm, and the laser scanning speed was 1300 mm/s. The zirconium alloy grillwork meeting the technical index requirements is prepared, and the problems of long development cycle and difficult manufacturing of the grillwork are solved.
Description
Technical Field
The invention belongs to the technical field of nuclear fuel element manufacturing, and particularly relates to a zirconium alloy grid laser additive manufacturing method.
Background
The spacer grid is an important component of the fuel assembly, and is used as the only component in the fuel assembly, which is in contact with the fuel rod, and the structure of the spacer grid not only needs to ensure the positioning of the fuel rod in the reactor core and the structural integrity of the fuel assembly, but also has the functions of improving the thermal performance of the fuel assembly and the like. However, the spacer grid has a complex structure and high requirements on the manufacturing process, if a conventional manufacturing means is used, the grid can be manufactured only by a plurality of complex processes such as stamping, cutting, welding and the like, and the integrated spacer grid meeting the performance requirements can be quickly and precisely manufactured by adopting a laser additive manufacturing technology.
Disclosure of Invention
The invention aims to provide a zirconium alloy grid laser additive manufacturing method, which develops exploration research on a process for preparing a full zirconium alloy grid by using a laser additive manufacturing technology, solves the problems of long research and development period and high difficulty in manufacturing and developing the grid of a fuel assembly, confirms the feasibility of the application of the additive manufacturing technology in the aspect of grid manufacturing, and realizes the application of the laser additive manufacturing technology in the field of research and development of nuclear fuel elements.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a zirconium alloy framework laser additive manufacturing method comprises the steps of establishing a three-dimensional model of the framework, designing a support structure for a hollow part of the framework, slicing and subdividing, and performing laser additive manufacturing on the zirconium alloy framework; and carrying out heat treatment on the manufactured grillwork.
The parameter range of the zirconium alloy grid frame laser additive manufacturing is as follows: the laser power is 200W-250W, the laser scanning speed is 1000 mm/s-1100 mm/s, the laser scanning interval is 0.08-0.12 mm, and the powder spreading thickness of the zirconium alloy powder is 0.03-0.05 mm.
The laser forming technological parameters of the supporting structure are as follows: the laser power was 100W, the laser scanning pitch was 0.11mm, and the laser scanning speed was 1300 mm/s.
The subdivision thickness is consistent with the powder laying thickness of the zirconium alloy powder.
The heat treatment specifically comprises the following steps: keeping the temperature at 520 ℃ for 60min, and then cooling along with the furnace.
The beneficial effects obtained by the invention are as follows:
the zirconium alloy grid is prepared by using the laser additive manufacturing technology, the process parameters of the laser additive manufacturing of the zirconium alloy grid are determined, the heat treatment process for eliminating residual stress and improving the mechanical property of the zirconium alloy grid is established, the zirconium alloy grid meeting the technical index requirements is finally prepared, and the problems of long development period and difficulty in manufacturing of the grid are solved.
Detailed Description
The present invention will be described in detail with reference to specific examples.
The laser additive manufacturing method of the zirconium alloy grillwork comprises the following steps:
1) the additive manufacturing process research of the zirconium alloy powder is carried out through an orthogonal test, and the parameter range of the additive manufacturing of the zirconium alloy powder is refined: the laser power is 200W-250W, the laser scanning speed is 1000 mm/s-1100 mm/s, the laser scanning interval is 0.08-0.12 mm, and the powder spreading thickness of the zirconium alloy powder is 0.03-0.05 mm.
2) The method is characterized in that three-dimensional modeling software is used for building a three-dimensional model of the framework, the framework is provided with a plurality of hollow structures, and when the length of a suspended part is greater than 2mm, zirconium alloy powder cannot support the framework, so that the framework is prone to forming failure, a supporting structure is designed for the framework, and laser forming technological parameters of the supporting structure are as follows: the laser power was 100W, the laser scanning pitch was 0.11mm, and the laser scanning speed was 1300 mm/s.
3) And (3) carrying out slicing and subdivision after adding a support structure into the model, wherein the subdivision thickness is consistent with the powder laying thickness of the zirconium alloy powder, and finally carrying out laser additive manufacturing on the zirconium alloy grillwork by using the additive manufacturing process parameters of the zirconium alloy powder determined in the step (2).
4) As the framework after laser forming has larger stress and influences the mechanical property of the framework, the framework prepared in the step 3 is subjected to heat treatment process research, and the annealing heat treatment process scheme of furnace cooling after the temperature of 520 ℃ is kept for 60min is determined.
The specific embodiment is as follows:
1) the molding process test shows that the optimal grid laser additive molding process parameters are as follows: the laser scanning speed is 1050mm/s, the scanning distance is 0.10mm, the laser power is 230W, and the powder spreading thickness is 0.04 mm;
2) determining the parameters of the laser additive forming process of the support part by analyzing the influence rule of each parameter on the laser forming framework as follows: the laser power is 100W, the laser scanning interval is 0.11mm, and the laser scanning speed is 1300 mm/s;
3) the preparation of the grillwork can be realized through a laser additive molding technology, and the process comprises the working procedures of three-dimensional solid modeling, support establishment, subdivision treatment and laser molding;
4) and (3) carrying out annealing heat treatment of furnace cooling after the grillwork is subjected to heat preservation at 520 ℃ for 60min after the laser additive forming, eliminating internal stress, improving the grillwork performance and facilitating subsequent linear cutting.
5) Finally, the zirconium alloy grillwork with the wall thickness of 0.6mm is prepared.
The Zr-4 alloy is used as a raw material to carry out laser additive manufacturing, the process parameters of powder laying thickness, laser power, laser scanning speed, scanning distance, powder laying thickness and the like are determined, the zirconium alloy grillwork is prepared, and the laser additive manufacturing process of the zirconium alloy grillwork is established.
Claims (5)
1. A zirconium alloy grillwork laser additive manufacturing method is characterized in that: establishing a three-dimensional model of the framework, designing a support structure for the hollow part of the framework, slicing and subdividing, and performing laser material increase manufacturing on the zirconium alloy framework; and carrying out heat treatment on the manufactured grillwork.
2. The zirconium alloy lattice laser additive manufacturing method according to claim 1, wherein: the parameter range of the zirconium alloy grid frame laser additive manufacturing is as follows: the laser power is 200W-250W, the laser scanning speed is 1000 mm/s-1100 mm/s, the laser scanning interval is 0.08-0.12 mm, and the powder spreading thickness of the zirconium alloy powder is 0.03-0.05 mm.
3. The zirconium alloy lattice laser additive manufacturing method according to claim 1, wherein: the laser forming technological parameters of the supporting structure are as follows: the laser power was 100W, the laser scanning pitch was 0.11mm, and the laser scanning speed was 1300 mm/s.
4. The zirconium alloy lattice laser additive manufacturing method according to claim 1, wherein: the subdivision thickness is consistent with the powder laying thickness of the zirconium alloy powder.
5. The zirconium alloy lattice laser additive manufacturing method according to claim 1, wherein: the heat treatment specifically comprises the following steps: keeping the temperature at 520 ℃ for 60min, and then cooling along with the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011625502.5A CN112828308A (en) | 2020-12-31 | 2020-12-31 | Zirconium alloy framework laser additive manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011625502.5A CN112828308A (en) | 2020-12-31 | 2020-12-31 | Zirconium alloy framework laser additive manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112828308A true CN112828308A (en) | 2021-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011625502.5A Pending CN112828308A (en) | 2020-12-31 | 2020-12-31 | Zirconium alloy framework laser additive manufacturing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN112828308A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384220A (en) * | 2001-05-07 | 2002-12-11 | 韩国原子力研究所 | Zirconium alloy with excellent anticorrosive performance and mechanical performance and production process of coated nuclear fuel pipe of the alloy |
| WO2004111562A2 (en) * | 2003-06-13 | 2004-12-23 | Schunk Kohlenstofftechnik Gmbh | Support for structural components and method for producing the same |
| CN103608475A (en) * | 2011-06-16 | 2014-02-26 | 西屋电气有限责任公司 | Zirconium alloys with improved corrosion/creep resistance due to final heat treatments |
| US20140326918A1 (en) * | 2013-05-06 | 2014-11-06 | Liang-Yuh Chen | Multi-Stage Process for Producing a Material of a Battery Cell |
| CN104919068A (en) * | 2013-01-11 | 2015-09-16 | 阿海珐核能公司 | Treatment process for a zirconium alloy, zirconium alloy resulting from this process and parts of nuclear reactors made of this alloy |
| CN106623927A (en) * | 2016-12-13 | 2017-05-10 | 中核北方核燃料元件有限公司 | Nuclear power fuel assembly tube socket laser additional material forming manufacturing method |
| CN111968760A (en) * | 2020-08-26 | 2020-11-20 | 西安交通大学 | Nuclear fuel assembly positioning grid frame based on additive manufacturing technology |
-
2020
- 2020-12-31 CN CN202011625502.5A patent/CN112828308A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384220A (en) * | 2001-05-07 | 2002-12-11 | 韩国原子力研究所 | Zirconium alloy with excellent anticorrosive performance and mechanical performance and production process of coated nuclear fuel pipe of the alloy |
| WO2004111562A2 (en) * | 2003-06-13 | 2004-12-23 | Schunk Kohlenstofftechnik Gmbh | Support for structural components and method for producing the same |
| CN103608475A (en) * | 2011-06-16 | 2014-02-26 | 西屋电气有限责任公司 | Zirconium alloys with improved corrosion/creep resistance due to final heat treatments |
| CN104919068A (en) * | 2013-01-11 | 2015-09-16 | 阿海珐核能公司 | Treatment process for a zirconium alloy, zirconium alloy resulting from this process and parts of nuclear reactors made of this alloy |
| US20140326918A1 (en) * | 2013-05-06 | 2014-11-06 | Liang-Yuh Chen | Multi-Stage Process for Producing a Material of a Battery Cell |
| CN106623927A (en) * | 2016-12-13 | 2017-05-10 | 中核北方核燃料元件有限公司 | Nuclear power fuel assembly tube socket laser additional material forming manufacturing method |
| CN111968760A (en) * | 2020-08-26 | 2020-11-20 | 西安交通大学 | Nuclear fuel assembly positioning grid frame based on additive manufacturing technology |
Non-Patent Citations (1)
| Title |
|---|
| 伍浩松等: "3D核电打印现状及前景", 《中国核工业》 * |
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Application publication date: 20210525 |