CN101968997B - Method for manufacturing large-size superconducting magnet laminated iron core - Google Patents
Method for manufacturing large-size superconducting magnet laminated iron core Download PDFInfo
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- CN101968997B CN101968997B CN 201010285638 CN201010285638A CN101968997B CN 101968997 B CN101968997 B CN 101968997B CN 201010285638 CN201010285638 CN 201010285638 CN 201010285638 A CN201010285638 A CN 201010285638A CN 101968997 B CN101968997 B CN 101968997B
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Abstract
The invention relates to a method for manufacturing a superconducting electromagnet used for charged particle transmission. A method for manufacturing a large-size superconducting magnet laminated iron core is mainly characterized by comprising the following steps of: stamping, detecting, end plate bonding, machining, half-iron core laminating, welding, and overall iron core assembling, wherein guide posts are arranged between an upper magnet and a lower magnet; the guide posts are respectively arranged on an upper iron core and a lower iron core; the guide posts are well matched with the upper and lower iron cores by debugging; the positions of the upper and lower guide posts are fixed; and during assembling, when the upper iron core is close to a superconducting coil Dewar box in a descending process, the guide posts start to work so as to prevent the Dewar box from being damaged because the upper iron core cannot be aligned. The method has the advantages that: a superconducting magnet of which the laminated magnet iron core is over 20T can be manufactured; and mechanical dimensions of the iron cores can be maintained by adopting a welding structure after the magnet iron cores are laminated. The magnetic field intensity and the magnetic field precision of a magnet are ensured and simultaneously a reasonable and practical manufacturing process is adopted; and the transformation from physical design to project implementation is finished in a plurality of processes such as stamping, laminating, roasting, detecting, and the like.
Description
Technical field:
The present invention relates to the manufacturing approach of the superconducting electromagnet that charged particle transmission uses, what relate in particular to the accelerator superconducting magnet laminates the iron core manufacturing approach.
Background technology:
The PARTICLE TRANSPORT FROM electromagnet is the capital equipment of accelerator, be mainly used in charged particle in vacuum cavity deflection and draw.The superconduction dipolar magnet has the magnetic field energy height, saves electrical loss (superconducting state lower coil resistance is zero), characteristics such as magnetic field precision height; In concrete design process, from the inhomogeneity purpose of eddy current electrical loss in the reduction magnet and raising material, the mode that pole core can adopt punching to laminate is made; Like the dipolar magnet of Beijing high the subject of knowledge and the object of knowledge electron-positron collider Binp, the dipolar magnet of the cooling storage ring SIS18 of the German heavy particle GSI of National Laboratory etc.The cold silicon steel sheet that goes the punching of storage rings dipolar magnet to adopt 1mm of Germany GSI, magnet adopt whole gluing laminating; Dipolar magnet in the BEPC adopts the silicon steel sheet of 0.5mm, and magnet adopts the whole gluing technology that laminates.
Usually lamination dipolar magnet size is determined according to the energy of particle and the intensity and the uniformity in divergence and magnetic field by accelerator physics.Consider the reality restriction and the Financial cost of engineering; Large scale magnet is no matter from the manufacturing of punching, gluing, size detection; And lamination process all exists engineering technology problem; Not enough like homemade punching uncoiling width, gluing rubber roll length is not enough, does not have enough big checkout equipment and detects punching dimensional accuracy or the like.Magnet generally can not design too big.But for physical Design, need the magnet aperture big sometimes, magnetic field intensity and required precision are high, but have to be limited by the restriction of manufacture process.
Be in alternating electromagnetism motor or magnetic cell after the match, for avoiding producing current vortex in that magnet is inner, thereby cause reducing the excitation efficiency of magnet, magnet itself usually is designed to the structure that silicon steel sheet laminates.Such structure has satisfied magnetic field for the requirement that reduces eddy current loss; Because the making of silicon steel sheet is to adopt punch die punching out on punch press to form; The cost of punch die and cycle have determined the shape of magnetic cell can not be too complicated, are that the punching by slices laminates the section of being in line or arc section basically.
The characterization processes of conventional punching adopts three coordinate points to survey appearance, and the precision of key point is made measurement, for undersized punching, because punching nature warpage is little, can obtain accurate measurement result; But for the large scale punching; The punching area is big; Because three-coordinates measuring machine requires punching must fill up the operate as normal that certain altitude could satisfy the measuring probe upper position sensor in measuring process; Thereby cause punching self flexural deformation on three-coordinates measuring machine can not truly reflect the precision of punching much larger than the certainty of measurement of instrument.
Adopt silicon steel sheet to laminate the magnetic cell that technology is processed; Because the restriction of version, can not that works does machining as required as the magnetic cell of solid-iron manufacturing, can cause like this overlapping together the silicon steel sheet cracking; Or because the effect of cutting force causes roll film, thereby cause part to scrap.
Summary of the invention:
The objective of the invention is to avoid the deficiency of prior art, provide a kind of large scale superconducting magnet to laminate the preparation method of iron core.Adopt manufacturing approach of the present invention, can make the laminted magnet iron core is the above superconducting magnet of 20T, adopts Welding Structure to keep iron core mechanical dimension behind the pole core closed assembly.When guaranteeing magnetic field of magnets intensity and magnetic field precision, adopted reasonable and practical manufacturing process; In punching out, laminate, baking in many processes such as detection, has been accomplished the transformation of physical Design to engineering construction.
For realizing above-mentioned purpose, the technical scheme that the present invention takes is: a kind of large scale superconducting magnet laminates the preparation method of iron core, and its main feature comprises the steps:
1. with 0.1-1mm silicon steel sheet punching uncoiling punching out;
2. detect: adopt laser tracker,, adopt gage outfit, punching cartridge part and rigging datum line are measured punching sturdy compressing on 00 grade of marble platform;
3. bonding end plate: adopt the step sheet to laminate the section of being in line or arc section the punching of slices; Be coated with epoxy resin glue bond end plate, adopt the film semi-solid preparation at the magnet two ends, the temperature of semi-solid preparation is 205 ℃-215 ℃;
4. machining: on frock, require the processing inclined-plane according to physics;
5. half iron core laminates and welds: the magnet to the centre part carries out film curing; Promptly to heating cure behind the punching gluing of middle 1/3-1/2 length; Curing temperature is 205 ℃-215 ℃, and the integral body after solidifying is adopted machine work again, and the processing back is embedded in the parts that electrical pure iron is made at processing groove;
6. select electrical pure iron DT4 for use at magnet punching peripheral solder steel plate materials, except angle welding all around, open long welding groove on every block welding metal plate at the steel plate center;
7. whole iron core assembling: between last lower magnet, install lead additional, lead is assemblied in respectively on the lower core, makes mutual no-float through debugging, the fixing position of lead up and down; During assembling, during soon near superconducting coil Dewar box, lead is started working in upper core decline process, to guarantee can not destroy outer Dewar box because upper core can not align.
Beneficial effect of the present invention: the present invention adopts reasonable technology and structure, has realized large scale, the manufacturing processing of high accuracy punching magnet.In the FAIR-CR superconduction dipolar magnet that German heavy particle laboratory GSI makes is done in Chinese Academy of Sciences's Contemporary Physics research, adopt this technology, the smooth inter-related task of having accomplished.Participate in by Research in China international big science device better with enterprise cooperation good condition is provided.For domestic each accelerator research department makes electromagnet of the same type experience and concrete scheme are provided simultaneously.Can save human resources and research and development fund for relevant manufacturer.
Advantage of the present invention is that can to make the laminted magnet iron core be the above superconducting magnet of 20T, adopts Welding Structure to keep iron core mechanical dimension behind the pole core closed assembly.When guaranteeing magnetic field of magnets intensity and magnetic field precision, adopted reasonable and practical manufacturing process; In punching out, laminate, baking in many processes such as detection, has been accomplished the transformation of physical Design to engineering construction.
Description of drawings:
Fig. 1 is the sketch map of embodiments of the invention 1.
Among the figure: 1. magnet top board; 2. upper core left side bonding end plate; 3. pull bar; 4. upper core welding section; 5. the right bonding of upper core end plate; 6. the right bonding of lower core end plate; 7. middle welding assembly; 8. lower core welding section; 9. lower core left side bonding end plate; 10. guide post; 11. magnet lower platen.
Fig. 2 is that the present invention detects sketch map.
Punching 1-1 among the figure, laser tracker is measured ball 1-2, measures ball frock 1-3, marble platform 1-4.
Fig. 3 is that silicon steel sheet of the present invention laminates sketch map.
Fig. 4 is a magnet assembling guide post sketch map of the present invention.
Among the figure, the 2-1. lead; 2-2. set bolt; 2-3. fairlead; 2-4. lower core; 2-5. upper core.
Embodiment:
Below principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
Embodiment 1: a kind of large scale superconducting magnet laminates the preparation method of iron core, comprises the steps:
Magnet structure is as shown in Figure 1, and the heavily about 24T of whole magnetic cell is about 2010mm, wide about 2200mm, high about 750mm.
Require magnetic cell to be overrided to form for the 0.5mm silicon steel sheet, the two ends bevel angle is 15 °, monolateral 7.5 °.Respectively there is a bonding end plate magnet two ends and centre, and the centre is adopted and welded after the mating plate of gluing does not laminate.
1. with the punching of 0.5mm silicon steel sheet; The 0.5mm silicon steel sheet of defined in the national standard is adopted in punching, and silicon steel sheet can require to choose the different trades mark according to magnetic field.
2. detect: see Fig. 2, adopt laser tracker,, adopt gage outfit, punching cartridge part and rigging datum line are measured punching 1-1 sturdy compressing on 00 grade of marble platform 1-4; After punching cartridge part and rigging datum line measurement, resulting measurement repeatable accuracy reaches the μ level, is higher than 0.01 millimeter magnitude of the punching accuracy of manufacture, can satisfy measurement requirement.Punching 1-1 among the figure, laser tracker is measured ball 1-2, measures ball frock 1-3, marble platform 1-4.
3. bonding end plate: see Fig. 3, adopt the step sheet to laminate the section of being in line or arc section the punching of slices; Be coated with epoxy resin glue bond end plate, adopt the film semi-solid preparation at the magnet two ends, the temperature of semi-solid preparation is 205 ℃-215 ℃; With prevent magnet in powering up running between the punching because Lip river, magnetic field logical sequence magnetic force and the phase mutual exclusion is opened, thereby influence field quality.Need process the inclined-plane to two ends, adopt epoxide-resin glue to laminate on the structure after, at 215 ℃, pressure 300MPa.With structural steel and iron punching is welded with the strong permanent magnet mechanical rigid after laminating completion.Carry out heat preservation solidification, make iron core be cured as integral body.On the short slab after the bonding, be welded with simultaneously the steel bar of
10; Preventing when the machining, because the unexpected stressed peeling force that produced during feed.
4. machining; The bonding end plate that welding is good is placed on the processing tool, chooses rational machined parameters.Accomplish the processing of whole end plate.
5. half iron core laminates and welds: the magnet to the centre part carries out film curing; Promptly to heating cure behind the punching gluing of middle 1/3-1/2 length; Curing temperature is 205 ℃-215 ℃, and the integral body after solidifying is adopted machine work again, and the processing back is embedded in the parts that electrical pure iron is made at processing groove;
6. select electrical pure iron DT4 for use at magnet punching peripheral solder steel plate materials, except angle welding all around, open long welding groove on every block welding metal plate, guarantee weld strength at the steel plate center.
7 whole iron core assemblings: see Fig. 4, between last lower magnet, install lead 2-1 additional, lead 2-1 is assemblied in respectively on upper core 2-5, the lower core 2-4, makes mutual no-float through debugging, the fixing position of lead 2-1 up and down; During assembling, during soon near superconducting coil Dewar box, lead 2-1 starts working in upper core 2-5 decline process, to guarantee can not destroy outer Dewar box because upper core 2-5 can not align.Among the figure, the 2-1. lead; 2-2. set bolt; 2-3. fairlead; 2-4. lower core; 2-5. upper core.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a large scale superconducting magnet laminates the preparation method of iron core, and its characteristic comprises the steps:
1). with 0.1-1mm silicon steel sheet punching uncoiling punching out;
2). detect: adopt laser tracker,, adopt gage outfit, punching cartridge part and rigging datum line are measured punching sturdy compressing on 00 grade of marble platform;
3). bonding end plate: adopt the step sheet to laminate the section of being in line or arc section the punching of slices; Be coated with epoxy resin glue bond end plate, adopt the film semi-solid preparation at the iron core two ends, the temperature of semi-solid preparation is 205 ℃-215 ℃;
4). machining: on frock, require the processing inclined-plane according to physics;
5). half iron core laminates and welds: the iron core to the centre part carries out film curing; Promptly to heating cure behind the punching gluing of middle 1/3-1/2 length; Curing temperature is 205 ℃-215 ℃, and the integral body after solidifying is adopted machine work again, and the processing back is embedded in the parts that electrical pure iron is made at processing groove;
6). select electrical pure iron DT4 for use at core stamping peripheral solder steel plate materials, except angle welding all around, open long welding groove on every block welding steel plate at the steel plate center;
7). whole iron core assembling: between last lower core, install lead additional, lead is assemblied in respectively on the lower core, makes mutual no-float through debugging, the fixing position of lead up and down; During assembling, during soon near superconducting coil Dewar box, lead is started working in upper core decline process, to guarantee can not destroy outer Dewar box because upper core can not align.
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| CN 201010285638 CN101968997B (en) | 2010-09-16 | 2010-09-16 | Method for manufacturing large-size superconducting magnet laminated iron core |
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| CN 201010285638 CN101968997B (en) | 2010-09-16 | 2010-09-16 | Method for manufacturing large-size superconducting magnet laminated iron core |
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| CN101968997B true CN101968997B (en) | 2012-02-08 |
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| CN107068381B (en) * | 2017-02-10 | 2018-06-26 | 济南奥图自动化股份有限公司 | A kind of three column piece individual layer automatic overlapping and assembling systems |
| CN107578910B (en) * | 2017-08-15 | 2019-08-02 | 合肥聚能电物理高技术开发有限公司 | A kind of the lamination closed assembly method and laminated core of accelerator iron core |
| CN112367758B (en) * | 2020-12-15 | 2023-04-11 | 兰州科近泰基新技术有限责任公司 | Fast pulse magnet laminating method for strong current heavy ion accelerator device |
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| CN201191549Y (en) * | 2008-04-17 | 2009-02-04 | 中国科学院近代物理研究所 | Fully adhesive bi-partition punching tablet four-pole electro-magnet |
| CN201191550Y (en) * | 2008-04-17 | 2009-02-04 | 中国科学院近代物理研究所 | Semi-adhesive bi-partition punching tablet four-pole electro-magnet |
| CN201191548Y (en) * | 2008-04-17 | 2009-02-04 | 中国科学院近代物理研究所 | H type punching sheet dipolar bending electro-magnet |
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