CN106623927A - Nuclear power fuel assembly tube socket laser additional material forming manufacturing method - Google Patents
Nuclear power fuel assembly tube socket laser additional material forming manufacturing method Download PDFInfo
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- CN106623927A CN106623927A CN201611144773.2A CN201611144773A CN106623927A CN 106623927 A CN106623927 A CN 106623927A CN 201611144773 A CN201611144773 A CN 201611144773A CN 106623927 A CN106623927 A CN 106623927A
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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
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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
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
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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
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
- B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
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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
- 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
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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
- B33Y80/00—Products made by additive manufacturing
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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
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
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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
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a nuclear power fuel assembly tube socket laser additional material forming manufacturing method. The method comprises the steps that 1, three-dimensional model design is performed on tube socket drawing paper to obtain a three-dimensional entity model; 2, support adding processing is performed on the suspended position of the obtained model; 3, layering slicing is performed on the model according to the certain thickness; laser powder, laser scanning speed and laser scanning interval parameters of an inner part of each layer of slices are designed; 4, the parameter data obtained in the step 3 is guided into laser selective melting forming equipment, base material leveling and gas washing operation are performed, and parts are started to be manufactured; 5, after the parts are manufactured, thermal treatment is performed on the parts, and internal stress of the parts is removed; 6, linear cutting is adopted for separating the parts from the base material. The pressurized water reactor nuclear power fuel assembly tube socket is rapidly repaired, and integral forming of the tube socket is achieved; the manufacturing period is equal to or shorter than 120 h, the tensile strength is 30% or more higher than that of a tube socket manufactured through a traditional technology, and the material utilization rate is larger than 99.0%.
Description
Technical field
The invention belongs to nuclear power fuel component manufacturing technology field, and in particular to a kind of compressed water reactor nuclear power fuel assembly
The laser gain material moulding manufacture method of seat.
Background technology
Base is one of vitals of compressed water reactor nuclear power fuel assembly, and traditional handicraft has 2 kinds, and one using rolling block base
Material, directly carries out machining preparation, and two carry out split shaping using the method for hot investment casting, are then processed again, two kinds
The operation of processing method is numerous and diverse, and difficulty is larger.Simultaneously also there is utilization rate of raw materials low, the process exploitation cycle in conventional machining process
Long the problems such as.
The preparation of base is carried out using laser gain material forming technique, conventional machining process complex procedures and material can be solved
The low problem of yield, realizes that base is integrally formed in preparation process, simplifies preparation technology, it is ensured that the integrality of part,
Preparation efficiency, and its utilization rate of raw materials are improve up to more than 99%.
The content of the invention
It is an object of the invention to provide a kind of nuclear power fuel component base laser gain material moulding manufacture method, it passes through to swash
Light increasing material manufacturing method, quickly prepares compressed water reactor nuclear power fuel assembly base, realizes being integrally formed for base.
Realize the technical scheme of the object of the invention:A kind of nuclear power fuel component base laser gain material moulding manufacture method, should
Method comprises the steps:
Step 1) base drawing is carried out into threedimensional model design, it is designed to three-dimensional entity model;
Step 2) to step 1) gained model overhead positions carry out plus support process;
Step 3) by step 2) gained model carries out hierarchy slicing according to certain thickness;Part in per layer of section of design
Laser power, laser scanning speed and laser scanning spacing parameter;
Step 4) by step 3) parameters obtained data import in the melt-forming equipment of selective laser, carry out base material leveling, wash
Gas operate, start to prepare part, according to step 3) parameter in the certain thickness spherical powder of substrate surface place Min layers, swashed
Light is sintered;
Step 5) in step 4) prepare part after the completion of, part is heat-treated, remove inside parts stress;
Step 6) part is carried out using wire cutting separate with base material.
A kind of nuclear power fuel component base laser gain material moulding manufacture method as above, its described step 3) in, point
Thickness degree is 0.04mm~0.06mm.
A kind of nuclear power fuel component base laser gain material moulding manufacture method as above, its described step 3) in, swash
Luminous power is 220W~260W, laser scanning speed 900mm/s~1100mm/s and laser scanning spacing 0.11mm~0.15mm.
A kind of nuclear power fuel component base laser gain material moulding manufacture method as above, its described step 4) in, adopt
Spherical powder is 304L stainless steel spherical powders, 20~60 μm of granularity.
A kind of nuclear power fuel component base laser gain material moulding manufacture method as above, its described step 4) in, base
Material adopts 304L stainless steels.
A kind of nuclear power fuel component base laser gain material moulding manufacture method as above, its described step 4) in, wash
Gas operation is that the indoor oxygen content of shaping is adjusted to into below 1000ppm.
A kind of nuclear power fuel component base laser gain material moulding manufacture method as above, its described step 4) in, base
Material leveling is referred to, it is ensured that opposing parallel between powdering scraper and molded substrate.
A kind of nuclear power fuel component base laser gain material moulding manufacture method as above, its described step 5) in, heat
It is 1050 DEG C~1200 DEG C to process holding temperature, and heating rate≤10 DEG C/min, protective atmosphere is argon gas.
A kind of nuclear power fuel component base laser gain material moulding manufacture method as above, its described step 2) in, hang
Empty position refers to base from bottom to top successively in forming process, portion not phase between previous layer cross section and latter layer cross section
Region of the coincidence size more than 2mm.
A kind of nuclear power fuel component base laser gain material moulding manufacture method as above, its described step 1) in, three
Dimension module is designed with software for Pro/E, UG or Solidwork.
Effect of the invention is that:The present invention quickly prepares compressed water reactor nuclear power fuel stack by laser gain material manufacture method
Part base, realizes being integrally formed for base.Obtained base of the invention, its manufacturing cycle is≤120h, and its tensile strength is than passing
It is high by more than 30% that system technique prepares base, and stock utilization is more than 99.0%.
Description of the drawings
Fig. 1 is the base material object photo that laser gain material is molded manufacture.
Specific embodiment
Below in conjunction with the accompanying drawings with specific embodiment to a kind of nuclear power fuel component base laser gain material of the present invention into
Type manufacture method is further described.
Embodiment 1
A kind of nuclear power fuel component base laser gain material moulding manufacture method of the present invention, it comprises the steps:
Step 1) base drawing is carried out into threedimensional model design, it is designed to three-dimensional entity model;Threedimensional model is designed with
Software is Pro/E.
Step 2) to step 1) overhead positions of gained model carry out 45 ° of solid supports and process;Overhead positions refer to base
From bottom to top successively in forming process, the portion size that do not coincide between previous layer cross section and latter layer cross section is more than
The region of 2mm.
Step 3) by step 2) gained model carries out hierarchy slicing according to certain thickness;Part in per layer of section of design
Laser power, laser scanning speed and laser scanning spacing parameter;Wherein, lift height is 0.05mm, laser power be 255W,
Laser scanning speed 960mm/s and laser scanning spacing 0.11mm.
Step 4) by step 3) parameters obtained data are imported in the melt-forming equipment of selective laser;
Base material leveling is carried out first, it is ensured that opposing parallel between powdering scraper and molded substrate, until powdering scraper and base
Gap is≤0.05mm between material, then carries out scrubbing operations, and gas washing is carried out to being molded interior using argon gas, when shaping indoor oxygen
Content for≤1000ppm when, unlatching equipment carries out part preparation;According to step 3) parameter it is necessarily thick in substrate surface place Min layers
The spherical powder of degree, is carried out laser sintered;Base material adopts 304L stainless steel spherical powders using 304L stainless steels, spherical powder,
40~50 μm of granularity.
Step 5) in step 4) prepare part after the completion of, part is heat-treated, remove inside parts stress;With 10
DEG C/heating rate of min is warming up to 1100 DEG C, is incubated 1h, is then shut off heating along with the furnace cooling, protective atmosphere is argon gas in stove.
Step 6) part is carried out using wire cutting separate with base material.
The base that test is prepared by above-mentioned process, as shown in figure 1, its manufacturing cycle is 108h, dimensional accuracy is full
Sufficient base use requirement, its tensile strength is 676MPa, and stock utilization is 99.1%.
Embodiment 2
A kind of nuclear power fuel component base laser gain material moulding manufacture method of the present invention, it comprises the steps:
Step 1) base drawing is carried out into threedimensional model design, it is designed to three-dimensional entity model;Threedimensional model is designed with
Software is UG.
Step 2) to step 1) gained model overhead positions carry out plus support process;Overhead positions refer to base from lower and
On successively in forming process, portion does not coincide area of the size more than 2mm between previous layer cross section and latter layer cross section
Domain.
Step 3) by step 2) gained model carries out hierarchy slicing according to certain thickness;Part in per layer of section of design
Laser power, laser scanning speed and laser scanning spacing parameter;Lift height is 0.04mmmm, and laser power is 220W, swashs
Optical scanning speed 900mm/s and laser scanning spacing 0.11mm.
Step 4) by step 3) parameters obtained data import in the melt-forming equipment of selective laser, carry out base material leveling, wash
Gas is operated;Start to prepare part, according to step 3) parameter in the certain thickness spherical powder of substrate surface place Min layers, swashed
Light is sintered;
Base material leveling is referred to, it is ensured that opposing parallel between powdering scraper and molded substrate.
Scrubbing operations are that the indoor oxygen content of shaping is adjusted to into below 1000ppm.
Base material adopts 304L stainless steel spherical powders, 20~30 μm of granularity using 304L stainless steels, spherical powder.
Step 5) in step 4) prepare part after the completion of, part is heat-treated, remove inside parts stress;Heat treatment
Holding temperature is 1050 DEG C, and heating rate≤10 DEG C/min are incubated 2h, and protective atmosphere is argon gas.
Step 6) part is carried out using wire cutting separate with base material.
Embodiment 3
A kind of nuclear power fuel component base laser gain material moulding manufacture method of the present invention, it comprises the steps:
Step 1) base drawing is carried out into threedimensional model design, it is designed to three-dimensional entity model;Threedimensional model is designed with
Software is Solidwork.
Step 2) to step 1) gained model overhead positions carry out plus support process;Overhead positions refer to base from lower and
On successively in forming process, portion does not coincide area of the size more than 2mm between previous layer cross section and latter layer cross section
Domain.
Step 3) by step 2) gained model carries out hierarchy slicing according to certain thickness;Part in per layer of section of design
Laser power, laser scanning speed and laser scanning spacing parameter;Lift height is 0.06mm, and laser power is 260W, laser
Sweep speed 1100mm/s and laser scanning spacing 0.15mm.
Step 4) by step 3) parameters obtained data import in the melt-forming equipment of selective laser, carry out base material leveling, wash
Gas is operated;Start to prepare part, according to step 3) parameter in the certain thickness spherical powder of substrate surface place Min layers, swashed
Light is sintered;
Base material leveling is referred to, it is ensured that opposing parallel between powdering scraper and molded substrate.
Scrubbing operations are that the indoor oxygen content of shaping is adjusted to into below 1000ppm.
Base material adopts 304L stainless steel spherical powders, 50~60 μm of granularity using 304L stainless steels, spherical powder.
Step 5) in step 4) prepare part after the completion of, part is heat-treated, remove inside parts stress;Heat treatment
Holding temperature is 1200 DEG C, and heating rate≤10 DEG C/min are incubated 0.5h, and protective atmosphere is argon gas.
Step 6) part is carried out using wire cutting separate with base material.
Embodiment 4
A kind of nuclear power fuel component base laser gain material moulding manufacture method of the present invention, it comprises the steps:
Step 1) base drawing is carried out into threedimensional model design, it is designed to three-dimensional entity model;Threedimensional model is designed with
Software is Pro/E.
Step 2) to step 1) overhead positions of gained model carry out 45 ° of solid supports and process;Overhead positions refer to base
From bottom to top successively in forming process, the portion size that do not coincide between previous layer cross section and latter layer cross section is more than
The region of 2mm.
Step 3) by step 2) gained model carries out hierarchy slicing according to certain thickness;Part in per layer of section of design
Laser power, laser scanning speed and laser scanning spacing parameter;Wherein, lift height is 0.05mm, laser power be 250W,
Laser scanning speed 1000mm/s and laser scanning spacing 0.12mm.
Step 4) by step 3) parameters obtained data are imported in the melt-forming equipment of selective laser;
Base material leveling is carried out first, it is ensured that opposing parallel between powdering scraper and molded substrate, until powdering scraper and base
Gap is≤0.05mm between material, then carries out scrubbing operations, and gas washing is carried out to being molded interior using argon gas, when shaping indoor oxygen
Content for≤1000ppm when, unlatching equipment carries out part preparation;Base material adopts 304L not using 304L stainless steels, spherical powder
Rust steel ball shape powder, 20~60 μm of granularity.
Step 5) in step 4) prepare part after the completion of, part is heat-treated, remove inside parts stress;With 8 DEG C/
The heating rate of min is warming up to 1200 DEG C, is incubated 1h, is then shut off heating along with the furnace cooling, and protective atmosphere is argon gas in stove.
Step 6) part is carried out using wire cutting separate with base material.
The base that test is prepared by above-mentioned process, dimensional accuracy meets base use requirement, and stock utilization is
99%.
Embodiments of the invention are explained in detail above, above-mentioned embodiment is only most highly preferred embodiment of the invention,
But the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, can with
Various changes can be made on the premise of without departing from present inventive concept.
Claims (10)
1. a kind of nuclear power fuel component base laser gain material moulding manufacture method, it is characterised in that:The method comprises the steps:
Step 1) base drawing is carried out into threedimensional model design, it is designed to three-dimensional entity model;
Step 2) to step 1) gained model overhead positions carry out plus support process;
Step 3) by step 2) gained model carries out hierarchy slicing according to certain thickness;The laser of part in per layer of section of design
Power, laser scanning speed and laser scanning spacing parameter;
Step 4) by step 3) parameters obtained data are imported in the melt-forming equipment of selective laser, carry out base material leveling, gas washing behaviour
Make, start to prepare part, according to step 3) parameter in the certain thickness spherical powder of substrate surface place Min layers, carry out laser burning
Knot;
Step 5) in step 4) prepare part after the completion of, part is heat-treated, remove inside parts stress;
Step 6) part is carried out using wire cutting separate with base material.
2. a kind of nuclear power fuel component base laser gain material moulding manufacture method according to claim 1, it is characterised in that:
The step 3) in, lift height is 0.04mm~0.06mm.
3. a kind of nuclear power fuel component base laser gain material moulding manufacture method according to claim 1, it is characterised in that:
The step 3) in, laser power is 220W~260W, laser scanning speed 900mm/s~1100mm/s and laser scanning spacing
0.11mm~0.15mm.
4. a kind of nuclear power fuel component base laser gain material moulding manufacture method according to claim 1, it is characterised in that:
The step 4) in, the spherical powder for adopting is 304L stainless steel spherical powders, 20~60 μm of granularity.
5. a kind of nuclear power fuel component base laser gain material moulding manufacture method according to claim 1, it is characterised in that:
The step 4) in, base material adopts 304L stainless steels.
6. a kind of nuclear power fuel component base laser gain material moulding manufacture method according to claim 1, it is characterised in that:
The step 4) in, scrubbing operations are that the indoor oxygen content of shaping is adjusted to into below 1000ppm.
7. a kind of nuclear power fuel component base laser gain material moulding manufacture method according to claim 1, it is characterised in that:
The step 4) in, base material leveling is referred to, it is ensured that opposing parallel between powdering scraper and molded substrate.
8. a kind of nuclear power fuel component base laser gain material moulding manufacture method according to claim 1, it is characterised in that:
The step 5) in, heat treatment holding temperature is 1050 DEG C~1200 DEG C, and heating rate≤10 DEG C/min, protective atmosphere is argon
Gas.
9. a kind of nuclear power fuel component base laser gain material moulding manufacture method according to claim 1, it is characterised in that:
The step 2) in, overhead positions refer to base from bottom to top successively in forming process, portion previous layer cross section with it is rear
Region of the size that do not coincide between one layer cross section more than 2mm.
10. a kind of nuclear power fuel component base laser gain material moulding manufacture method according to claim 1, its feature exists
In:The step 1) in, threedimensional model is designed with software for Pro/E, UG or Solidwork.
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Cited By (7)
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CN109360671A (en) * | 2018-10-24 | 2019-02-19 | 中国科学院上海应用物理研究所 | A kind of preparation method of fuel element |
CN110756800A (en) * | 2018-07-26 | 2020-02-07 | 中国商用飞机有限责任公司 | Additive manufacturing method |
CN112828308A (en) * | 2020-12-31 | 2021-05-25 | 中核北方核燃料元件有限公司 | Zirconium alloy framework laser additive manufacturing method |
CN112846228A (en) * | 2020-12-31 | 2021-05-28 | 中核建中核燃料元件有限公司 | Selective laser melting forming method for supporting-free local lower tube seat of nuclear fuel assembly |
CN113000839A (en) * | 2019-12-20 | 2021-06-22 | 中核北方核燃料元件有限公司 | Method for 3D printing of key parts of fuel elements of 6061 aluminum alloy test reactor |
CN113000840A (en) * | 2019-12-20 | 2021-06-22 | 中核北方核燃料元件有限公司 | Zirconium alloy framework laser additive manufacturing method |
EP4094881A1 (en) * | 2021-05-07 | 2022-11-30 | Transportation IP Holdings, LLC | A body and method for locating machining features in additively manufactured parts |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110756800A (en) * | 2018-07-26 | 2020-02-07 | 中国商用飞机有限责任公司 | Additive manufacturing method |
CN110756800B (en) * | 2018-07-26 | 2022-02-01 | 中国商用飞机有限责任公司 | Additive manufacturing method |
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CN113000839A (en) * | 2019-12-20 | 2021-06-22 | 中核北方核燃料元件有限公司 | Method for 3D printing of key parts of fuel elements of 6061 aluminum alloy test reactor |
CN113000840A (en) * | 2019-12-20 | 2021-06-22 | 中核北方核燃料元件有限公司 | Zirconium alloy framework laser additive manufacturing method |
CN112828308A (en) * | 2020-12-31 | 2021-05-25 | 中核北方核燃料元件有限公司 | Zirconium alloy framework laser additive manufacturing method |
CN112846228A (en) * | 2020-12-31 | 2021-05-28 | 中核建中核燃料元件有限公司 | Selective laser melting forming method for supporting-free local lower tube seat of nuclear fuel assembly |
EP4094881A1 (en) * | 2021-05-07 | 2022-11-30 | Transportation IP Holdings, LLC | A body and method for locating machining features in additively manufactured parts |
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