CN106736292A - A kind of advanced pressurized water reactor fuel element base machining process - Google Patents
A kind of advanced pressurized water reactor fuel element base machining process Download PDFInfo
- Publication number
- CN106736292A CN106736292A CN201611233564.5A CN201611233564A CN106736292A CN 106736292 A CN106736292 A CN 106736292A CN 201611233564 A CN201611233564 A CN 201611233564A CN 106736292 A CN106736292 A CN 106736292A
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- China
- Prior art keywords
- base
- pressurized water
- water reactor
- reactor fuel
- machining
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- 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
- 238000003754 machining Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000003758 nuclear fuel Substances 0.000 title claims abstract description 27
- 238000000137 annealing Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000005495 investment casting Methods 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 5
- 238000003801 milling Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 11
- 210000003734 kidney Anatomy 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000009510 drug design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003701 mechanical milling Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Mechanical Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention provides a kind of advanced pressurized water reactor fuel element base machining process, and it comprises the following steps：A () casts out base blank using precision casting process first, bottom surface, the direct cast form in flowing water duct of base are no longer processed to size；Other required precisions location hole high, centre bore, upper planar section cast out structure and reserve allowance；B () after the completion of step (a) casting, to the treatment of base rough annealing, annealing uses annealing furnace, and 330 DEG C~370 DEG C of annealing temperature is incubated 1~3 hour；(c) and then carry out upper plane, location hole and the centre bore of base by the way of machining and be finally molded.The present invention can be effective to reduce the single-piece work time with substantial amounts of reduction allowance, reduces cutter loss；Simplify labyrinth processing mode, reduce mechanical processing technique difficulty, it is easy to control product quality, reduce production cost.
Description
Technical field
The present invention relates to the manufacture of nuclear fuel element structural member, and in particular to a kind of advanced pressurized water reactor fuel element base machinery
Processing method.
Background technology
The base that present presurized water reactor element is used mainly carries out mechanical Milling Process and is done directly using section bar, wherein on
Base will first process follow-up welding and be finished again.The complex process, material removal amount are big, the process-cycle is more long, meanwhile, weldering
Meeting technique local heating is easily deformed workpiece, and overall processing cost is higher.
The content of the invention
It is an object of the invention to provide a kind of advanced pressurized water reactor fuel element base machining process, it is effectively improved
The preparation efficiency of the base, reduces material usage, reduces processing and uses tool specification, reduces manufacturing cost.
Realize the technical scheme of the object of the invention：A kind of advanced pressurized water reactor fuel element base machining process, its bag
Include following steps：
A () casts out base blank, the bottom surface of base, the direct cast form in flowing water duct using precision casting process first
To size, no longer it is processed；Other required precisions location hole high, centre bore, upper planar section cast out structure and reserve and add
Spare time measures；
B () after the completion of step (a) casting, to the treatment of base rough annealing, annealing uses annealing furnace, annealing temperature
330 DEG C~370 DEG C, it is incubated 1~3 hour；
(c) and then carry out upper plane, location hole and the centre bore of base by the way of machining and be finally molded.
A kind of advanced pressurized water reactor fuel element base machining process as described above, the machinery of the upper plane described in it
It is processed as：Base bottom surface corner is supported by four support blocks, base both sides are being fixed on milling machine using two hold-down gears
On workbench, using the center section of plane on milling cutter processing base；After the completion of, in pushing down base with two other hold-down gear
Between, the hold-down gear on both sides is unclamped, remainder is processed using milling cutter.
A kind of advanced pressurized water reactor fuel element base machining process as described above, the machinery of the location hole described in it
It is processed as：Have kidney-shaped slot structure at 4 in base location hole, and 4 partial arcs it is discontinuous, less than location hole bore area, in machine
Forming tool is used on tool process equipment, controls forming tool from positioning holes center position respectively to four direction with numerical control program
It is processed, reaches size requirement.Described machining equipment CNC milling machine.
A kind of advanced pressurized water reactor fuel element base machining process as described above, the machinery of the centre bore described in it
It is processed as：Centre bore has chamfering at 3, corresponding forming tool is designed and produced according to center hole structure, on machining equipment
Using the forming tool, using all physical dimensions of the once-forming completion in addition to foot chamfering, upset workpiece uses angle
Milling cutter completes the processing of chamfering at remaining 1.Described machining equipment CNC milling machine.
A kind of advanced pressurized water reactor fuel element base machining process as described above, the advanced pressurized water reactor combustion described in it
Material component base material uses stainless steel material.
A kind of advanced pressurized water reactor fuel element base machining process as described above, the advanced pressurized water reactor combustion described in it
Material component base is upper base or bottom nozzle.
Effect of the invention is that：
The present invention is directed to the structure of advanced pressurized water reactor fuel assembly base, using the preparation work of hot investment casting+machining
Skill route, establishes a kind of advanced pressurized water reactor fuel assembly base hot investment casting blank mechanical processing technique.It is prepared by base
Flow, processing mode have carried out rational design integration, effectively increase the processing efficiency of base.The technique has evaded Welder
The hidden danger of quality of skill, meanwhile, material removal amount reduces, and processing route rationally, improves processing efficiency.
The process program reprocessed using hot investment casting base blank, can effectively be subtracted with substantial amounts of reduction allowance
Few single-piece work time, reduce cutter loss；Simplify labyrinth processing mode, reduce mechanical processing technique difficulty, easily
In control product quality, production cost is reduced.
Brief description of the drawings
Fig. 1 is certain base structural representation；
Fig. 2 is the base top view of Fig. 1；
Fig. 3 is plane milling device schematic diagram on base；
Fig. 4 is location hole kidney slot machining sketch chart；
Fig. 5 is bottom nozzle centre bore and forming tool schematic diagram.
In figure：1. bottom surface；2. location hole；3. centre bore；4. plane is gone up；5. leg port；6. flowing water duct；7. hold-down gear
One；8. base；9. support block；10. milling machine table；11. hold-down gears two；12. kidney slots；13. forming tools.
Specific embodiment
Below in conjunction with the accompanying drawings with specific embodiment to a kind of advanced pressurized water reactor fuel element base machinery of the present invention
Processing method is further described.
A kind of advanced pressurized water reactor fuel element base machining process of the present invention, it comprises the following steps：
A () as depicted in figs. 1 and 2, casts out base blank, the bottom surface 1, flowing water of base using precision casting process first
The direct cast form in duct 6 is no longer processed to size；Other required precisions location hole 2 high, centre bore 3, upper plane 4
Part casts out structure and reserves allowance；
B () after the completion of step (a) casting, to the treatment of base rough annealing, annealing uses annealing furnace, annealing temperature
330 DEG C~370 DEG C, it is incubated 1~3 hour；(for example：330 DEG C of annealing temperature, is incubated 3 hours；Or 350 DEG C of annealing temperature, protect
Temperature 2 hours；Or 370 DEG C of annealing temperature, it is incubated 1 hour)
(c) then carried out by the way of machining base upper plane 4, location hole 2 and centre bore (3) it is last
Shaping.
The machining of described upper plane is：As shown in figure 3, the bottom surface corner of base 8 is supported by four support blocks 9,
The both sides of base 8 are fixed on milling machine table 10 using two hold-down gears 7 and 11, using plane on milling cutter processing base
4 center section；After the completion of, pushed down in the middle of base with two other hold-down gear, the hold-down gear 7 and 11 on both sides is unclamped, adopt
Remainder is processed with milling cutter.
The machining of described location hole is：As shown in figure 4, having the structure of kidney slot 12 at 4, and 4 in base location hole 2
Partial arc is discontinuous, less than the bore area of location hole 2, in machining equipment (for example：CNC milling machine) on use forming-tool
Tool, is processed to four direction respectively with numerical control program control forming tool from the center of location hole 2, and reaching size will
Ask.
The machining of described centre bore is：As shown in figure 5, centre bore 3 has at 3 inner bore chamfering, 2 kinds at chamfering, and 1
The internal diameter of size, coaxiality of inner hole requirement is 0.2mm, corresponding forming tool is made according to the structure design of centre bore 3, in machinery
Process equipment is (for example：CNC milling machine) on use the forming tool, it is all in addition to foot chamfering using once-forming completion
Physical dimension, upset workpiece completes the processing of chamfering at remaining 1 using angle milling cutter.
Advanced pressurized water reactor fuel assembly seat material of the present invention uses stainless steel material, and base is upper base or bottom nozzle.
The direct cast form of physical dimension such as base blank, flowing water duct, bottom surface of base is cast out using precision casting process first
To size, no longer it is processed；Other required precisions part higher casts out structure and reserves allowance, using machining
Mode carry out last processing and forming；After the completion of the casting it is undressed before using annealing, discharge stress, reduce in machinery plus
Deformation during work, after processing.
Claims (8)
1. a kind of advanced pressurized water reactor fuel element base machining process, it is characterised in that the method comprises the following steps：
A () casts out base blank using precision casting process first, the bottom surface (1) of base, flowing water duct (6) are directly cast as
Shape is no longer processed to size；Other required precisions location hole high (2), centre bore (3), upper plane (4) partly cast out
Structure reserves allowance；
B () after the completion of step (a) casting, to the treatment of base rough annealing, annealing uses annealing furnace, annealing temperature 330
DEG C~370 DEG C, it is incubated 1~3 hour；
(c) then carried out by the way of machining base upper plane (4), location hole (2) and centre bore (3) it is last
Shaping.
2. a kind of advanced pressurized water reactor fuel element base machining process according to claim 1, it is characterised in that institute
The machining of the upper plane stated is：
Base (8) bottom surface corner is supported by four support blocks (9), two hold-down gears (7 and 11) is being used base (8) two
While be fixed on milling machine table (10), using the center section of plane (4) on milling cutter processing base；After the completion of, with other two
Individual hold-down gear is pushed down in the middle of base, unclamps the hold-down gear (7 and 11) on both sides, and remainder is processed using milling cutter.
3. a kind of advanced pressurized water reactor fuel element base machining process according to claim 1, it is characterised in that institute
The machining of the location hole stated is：
Have kidney slot at 4 (12) structure in base location hole (2), and 4 partial arcs it is discontinuous, less than location hole (2) endoporus table
Face, uses forming tool on machining equipment, controls forming tool to distinguish from location hole (2) center with numerical control program
It is processed to four direction, reaches size requirement.
4. a kind of advanced pressurized water reactor fuel element base machining process according to claim 3, it is characterised in that institute
The machining equipment CNC milling machine stated.
5. a kind of advanced pressurized water reactor fuel element base machining process according to claim 1, it is characterised in that institute
The machining of the centre bore stated is：
Centre bore (3) has chamfering at 3, corresponding forming tool is made according to centre bore (3) structure design, in machining equipment
Upper to use the forming tool, using all physical dimensions of the once-forming completion in addition to foot chamfering, upset workpiece uses angle
Degree milling cutter completes the processing of chamfering at remaining 1.
6. a kind of advanced pressurized water reactor fuel element base machining process according to claim 5, it is characterised in that institute
The machining equipment CNC milling machine stated.
7. a kind of advanced pressurized water reactor fuel element base machining process according to claim 1, it is characterised in that institute
The advanced pressurized water reactor fuel assembly seat material stated uses stainless steel material.
8. a kind of advanced pressurized water reactor fuel element base machining process according to claim 1, it is characterised in that institute
The advanced pressurized water reactor fuel assembly base stated is upper base or bottom nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233564.5A CN106736292A (en) | 2016-12-28 | 2016-12-28 | A kind of advanced pressurized water reactor fuel element base machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233564.5A CN106736292A (en) | 2016-12-28 | 2016-12-28 | A kind of advanced pressurized water reactor fuel element base machining process |
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| Publication Number | Publication Date |
|---|---|
| CN106736292A true CN106736292A (en) | 2017-05-31 |
Family
ID=58921523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611233564.5A Pending CN106736292A (en) | 2016-12-28 | 2016-12-28 | A kind of advanced pressurized water reactor fuel element base machining process |
Country Status (1)
| Country | Link |
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| CN (1) | CN106736292A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320818A (en) * | 2017-12-27 | 2018-07-24 | 中核北方核燃料元件有限公司 | A kind of down pipe base for nucleus fuel component machining process |
| CN108922642A (en) * | 2017-12-27 | 2018-11-30 | 中核北方核燃料元件有限公司 | A kind of ringed nucleus upper pipe seat of fuel component machining process |
| CN108907609A (en) * | 2017-12-27 | 2018-11-30 | 中核北方核燃料元件有限公司 | A kind of nuclear fuel assembly upper tube seat machining process |
| CN109530723A (en) * | 2018-12-29 | 2019-03-29 | 中核北方核燃料元件有限公司 | A kind of processing method of operating head |
| CN114193095A (en) * | 2021-12-08 | 2022-03-18 | 中核建中核燃料元件有限公司 | Manufacturing method of nuclear fuel lower pipe seat adopting local 3D printing structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071528A (en) * | 1991-10-04 | 1993-04-28 | 法玛通公司 | The bottom nozzle of fuel assembly for water-cooled nuclear reactor |
| CN101186001A (en) * | 2007-11-30 | 2008-05-28 | 中国核动力研究设计院 | Mechanical process technique for producing lead boron polythene radiation protection shielding body |
| CN101817103A (en) * | 2010-04-09 | 2010-09-01 | 上海锐迈重工有限公司 | Tube base machining method |
| CN102019353A (en) * | 2010-12-17 | 2011-04-20 | 西安西工大超晶科技发展有限责任公司 | Precision casting molding method for complex thin-walled member |
| CN102476260A (en) * | 2010-11-23 | 2012-05-30 | 中核建中核燃料元件有限公司 | Manufacturing method of lower pipe seat chip-proof plate |
| CN102750991A (en) * | 2012-07-19 | 2012-10-24 | 中国核动力研究设计院 | Nuclear fuel component lower pipe seat with filter plate and filter plate processing technology of nuclear fuel component lower pipe seat |
| CN202650554U (en) * | 2012-07-17 | 2013-01-02 | 中国核动力研究设计院 | A nuclear fuel assembly upper tube base that is easy to process and manufacture |
| US20140334595A1 (en) * | 2013-05-10 | 2014-11-13 | Thorium Power, Inc. | Fuel assembly |
| CN104538064A (en) * | 2014-12-19 | 2015-04-22 | 上海核工程研究设计院 | Fuel assembly lower pipe seat for balancing flow rate of coolant at reactor core inlet |
| CN104575628A (en) * | 2014-12-19 | 2015-04-29 | 上海核工程研究设计院 | Fuel assembly lower tube seat with double foreign matter prevention functions |
-
2016
- 2016-12-28 CN CN201611233564.5A patent/CN106736292A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071528A (en) * | 1991-10-04 | 1993-04-28 | 法玛通公司 | The bottom nozzle of fuel assembly for water-cooled nuclear reactor |
| CN101186001A (en) * | 2007-11-30 | 2008-05-28 | 中国核动力研究设计院 | Mechanical process technique for producing lead boron polythene radiation protection shielding body |
| CN101817103A (en) * | 2010-04-09 | 2010-09-01 | 上海锐迈重工有限公司 | Tube base machining method |
| CN102476260A (en) * | 2010-11-23 | 2012-05-30 | 中核建中核燃料元件有限公司 | Manufacturing method of lower pipe seat chip-proof plate |
| CN102019353A (en) * | 2010-12-17 | 2011-04-20 | 西安西工大超晶科技发展有限责任公司 | Precision casting molding method for complex thin-walled member |
| CN202650554U (en) * | 2012-07-17 | 2013-01-02 | 中国核动力研究设计院 | A nuclear fuel assembly upper tube base that is easy to process and manufacture |
| CN102750991A (en) * | 2012-07-19 | 2012-10-24 | 中国核动力研究设计院 | Nuclear fuel component lower pipe seat with filter plate and filter plate processing technology of nuclear fuel component lower pipe seat |
| US20140334595A1 (en) * | 2013-05-10 | 2014-11-13 | Thorium Power, Inc. | Fuel assembly |
| CN104538064A (en) * | 2014-12-19 | 2015-04-22 | 上海核工程研究设计院 | Fuel assembly lower pipe seat for balancing flow rate of coolant at reactor core inlet |
| CN104575628A (en) * | 2014-12-19 | 2015-04-29 | 上海核工程研究设计院 | Fuel assembly lower tube seat with double foreign matter prevention functions |
Non-Patent Citations (2)
| Title |
|---|
| 宋金虎: "《金属工艺学》", 30 September 2009, 北京交通大学出版社 * |
| 康进兴，马康民: "《航空材料学》", 31 March 2013, 国防工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320818A (en) * | 2017-12-27 | 2018-07-24 | 中核北方核燃料元件有限公司 | A kind of down pipe base for nucleus fuel component machining process |
| CN108922642A (en) * | 2017-12-27 | 2018-11-30 | 中核北方核燃料元件有限公司 | A kind of ringed nucleus upper pipe seat of fuel component machining process |
| CN108907609A (en) * | 2017-12-27 | 2018-11-30 | 中核北方核燃料元件有限公司 | A kind of nuclear fuel assembly upper tube seat machining process |
| CN108907609B (en) * | 2017-12-27 | 2019-09-17 | 中核北方核燃料元件有限公司 | A kind of nuclear fuel assembly upper tube seat machining process and clamp for machining |
| CN109530723A (en) * | 2018-12-29 | 2019-03-29 | 中核北方核燃料元件有限公司 | A kind of processing method of operating head |
| CN114193095A (en) * | 2021-12-08 | 2022-03-18 | 中核建中核燃料元件有限公司 | Manufacturing method of nuclear fuel lower pipe seat adopting local 3D printing structure |
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Application publication date: 20170531 |
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