CN113399234A - Epoxy spraying insulation treatment method for superconducting undulator framework - Google Patents
Epoxy spraying insulation treatment method for superconducting undulator framework Download PDFInfo
- Publication number
- CN113399234A CN113399234A CN202110570664.1A CN202110570664A CN113399234A CN 113399234 A CN113399234 A CN 113399234A CN 202110570664 A CN202110570664 A CN 202110570664A CN 113399234 A CN113399234 A CN 113399234A
- Authority
- CN
- China
- Prior art keywords
- superconducting undulator
- framework
- skeleton
- superconducting
- undulator
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The invention discloses an epoxy spraying insulation treatment method for a superconducting undulator framework, which comprises the following steps: 1) integrally processing and preparing an iron core framework and a magnetic pole of the superconducting undulator framework to obtain the superconducting undulator framework; wherein, the thickness L1 of the epoxy coating is reserved on the prepared superconducting undulator skeleton; 2) spraying an epoxy coating with the thickness of L2 on the superconducting undulator skeleton prepared in the step 1); wherein L2 is greater than L1; 3) curing the sprayed epoxy coating of step 2); 4) and (4) performing finish machining on the superconducting undulator skeleton of the cured epoxy coating, and removing redundant spraying to obtain the superconducting undulator skeleton after insulation treatment. The invention mainly adopts low-temperature epoxy as an insulating coating, solves the problem of insulating the superconducting undulator framework to the ground, and can ensure the bonding strength between the superconducting undulator framework and the coil and between the superconducting undulator framework and the impregnating epoxy.
Description
Technical Field
The invention relates to an epoxy spraying insulation treatment method for a superconducting undulator framework, and belongs to the technical field of low-temperature superconduction of accelerators.
Background
The superconducting undulator magnetic pole mainly comprises a superconducting coil and an iron core framework, a plurality of wire grooves are processed on the framework, the coil is wound on the iron core framework, the process needs to ensure the insulation between the coil and the framework, and the general insulation treatment process comprises the following steps:
1. insulating materials (such as insulating tapes or insulating plates) are pasted inside the wire grooves, but the geometric dimension of the wire grooves is very limited for the short-period superconducting undulator, and the insulating treatment process cannot be applied.
2. The framework is processed in a split way and is divided into an upper side plate, a magnetic pole and an iron core framework. The upper side plate is processed into G10 insulating material, and the magnetic poles are subjected to independent insulation treatment and then all the parts are integrally assembled.
If the superconducting undulator does not perform insulation treatment on the iron core framework, the superconducting undulator only depends on the self insulating layer of the superconducting wire to realize ground insulation, and the voltage-resistant effect is poor. Especially for magnets with high stored energy, the high voltage generated by quench can damage the magnet coils. Meanwhile, the superconducting undulator has high requirements on the phase error of a magnetic field, and the size precision of a magnetic pole and an iron core framework is greatly influenced by the subjectivity of an operator and has poor repeatability by the process of manually bonding an insulating material; the split machining and the integral assembling of the iron core framework can introduce larger assembling errors, which can all have fatal influence on the precision of the magnetic field.
After the winding of the superconducting undulator coil is finished, vacuum epoxy impregnation is needed, the coil, the framework and the impregnating epoxy need to have enough bonding strength, and the bonding force of the common insulating material with the metal framework and the impregnating epoxy is very limited. Especially, after the coil is cooled, the skeleton is often stripped from the impregnated epoxy, which affects the overall performance of the magnet.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to disclose an epoxy spraying insulation treatment method for a framework of a superconducting undulator and a preparation method for a magnetic pole of the superconducting undulator. The invention mainly adopts low-temperature epoxy as an insulating coating, solves the problem of insulating the superconducting undulator framework to the ground, and can ensure the bonding strength between the superconducting undulator framework and the coil and between the superconducting undulator framework and the impregnating epoxy.
Because the superconducting undulator has very high requirements on the phase error of the magnetic field, the invention adopts an integrated processing mode for the magnetic pole and the iron core framework; and (4) cleaning the surface of the superconducting undulator skeleton obtained after the processing is finished, and then subsequently finishing spraying insulation after the cleaning is finished.
And (3) performing epoxy spraying after the low-temperature epoxy adhesive required by spraying reaches the spraying viscosity, and placing the sprayed superconducting undulator skeleton into an oven for curing. And after the solidification is finished, performing finish machining on the superconducting undulator skeleton by using a numerical control machine tool, removing redundant spraying thickness, and performing a subsequent coil winding process after the required precision is achieved.
The spraying material of the superconducting undulator framework selects low-temperature epoxy resin, so that the bonding strength with the coil, the framework and the impregnated epoxy glue is ensured.
The technical scheme of the invention is as follows:
an epoxy spraying insulation treatment method for a superconducting undulator framework comprises the following steps:
1) integrally processing and preparing an iron core framework and a magnetic pole of the superconducting undulator framework to obtain the superconducting undulator framework; wherein, the thickness L1 of the epoxy coating is reserved on the prepared superconducting undulator skeleton;
2) spraying an epoxy coating with the thickness of L2 on the superconducting undulator skeleton prepared in the step 1); wherein L2 is greater than L1;
3) curing the sprayed epoxy coating of step 2);
4) and (4) performing finish machining on the superconducting undulator skeleton of the cured epoxy coating, and removing redundant spraying to obtain the superconducting undulator skeleton after insulation treatment.
Further, in the step 2), the low-temperature epoxy adhesive is diluted by a diluent and then atomized and sprayed, and high-pressure gas used for spraying is high-purity nitrogen.
Further, in the step 2), the part which does not need to be adhered by the epoxy coating is protected before spraying.
Further, the sprayed epoxy coating in the step 2) is cured according to a set epoxy glue temperature curing curve.
Further, the superconducting undulator framework sprayed with the epoxy coating in the step 2) is placed in an oven for curing.
Further, the thickness L1 of the epoxy coating is 0.1 mm; the spraying thickness L2 is 0.15-0.2 mm.
A preparation method of a superconducting undulator magnetic pole comprises the following steps:
1) integrally processing and preparing an iron core framework and a magnetic pole of the superconducting undulator framework to obtain the superconducting undulator framework; wherein, the thickness L1 of the epoxy coating is reserved on the prepared superconducting undulator skeleton;
2) spraying an epoxy coating with the thickness of L2 on the superconducting undulator skeleton prepared in the step 1); wherein L2 is greater than L1;
3) curing the sprayed epoxy coating of step 2);
4) performing finish machining on the superconducting undulator skeleton of the cured epoxy coating, and removing redundant spraying to obtain the superconducting undulator skeleton after insulation treatment;
5) and preparing a superconducting undulator coil skeleton based on the superconducting undulator skeleton after insulation treatment, and then carrying out coil winding and vacuum epoxy impregnation on the superconducting undulator coil skeleton to obtain the superconducting undulator magnetic pole.
Compared with the prior art, the invention has the following advantages:
1. the superconducting undulator framework is integrally processed, so that the quality of a magnetic field can be ensured, and the phase error of the magnetic field can be ensured.
2. The winding groove of the superconducting undulator adopts epoxy spraying, so that the insulation quality can be ensured, and the bonding strength of an insulation layer, a framework and impregnated low-temperature glue can also be ensured.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
To facilitate an understanding of the key technology of the present invention, the following description is given by way of a specific example:
the iron core framework and the magnetic pole pieces are integrally processed to obtain the superconducting undulator framework, and the main purpose is to ensure the position precision of each magnetic pole piece generating a magnetic field and ensure the quality of the magnetic field. The low-temperature epoxy is adopted as the insulating coating, and the insulating layer has good low-temperature performance and adhesive force. The processing size of the superconducting undulator framework needs to reserve the size allowance (designed to be 0.1mm) of the thickness of the epoxy coating.
The surface of the superconducting undulator skeleton is firstly cleaned by gasoline to remove oil stains, impurities and the like on the surface, after the surface is sufficiently cleaned, the superconducting undulator skeleton is placed in acetone again to finish further cleaning, and the epoxy coating sprayed subsequently can be bonded with the superconducting undulator skeleton and fall off due to insufficient cleaning. And after the superconducting undulator framework is cleaned, drying the superconducting undulator framework to wait for the subsequent epoxy spraying operation. The insulating coating is made of low-temperature epoxy glue with good toughness, atomization spraying can be carried out only when the viscosity reaches an ideal condition after the epoxy glue is diluted by a diluent, and high-pressure gas used for spraying is high-purity nitrogen. The part which does not need to be adhered with the epoxy coating is protected before spraying, and the unilateral thickness of the insulating coating is larger than the designed size allowance. The thickness of a single side of a common insulating coating is designed to be 0.15-0.2 mm. And after the spraying is finished, placing the framework in an oven, and curing according to a set epoxy glue temperature curing curve. And after the curing is finished, performing finish machining on the superconducting undulator framework by using a numerical control milling machine, cutting for multiple times in the machining process, avoiding the cutting force of the machine tool from damaging the surface of the coating, and finally ensuring that the thickness of the epoxy insulation layer is 0.1mm without using cutting fluid in the whole process. After the machining is finished, alcohol cleaning needs to be carried out on the superconducting undulator framework, and subsequent winding work is prepared.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, and those skilled in the art may make modifications and variations within the spirit of the present invention, and all modifications, equivalents and modifications of the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.
Claims (9)
1. An epoxy spraying insulation treatment method for a superconducting undulator framework comprises the following steps:
1) integrally processing and preparing an iron core framework and a magnetic pole of the superconducting undulator framework to obtain the superconducting undulator framework; wherein, the thickness L1 of the epoxy coating is reserved on the prepared superconducting undulator skeleton;
2) spraying an epoxy coating with the thickness of L2 on the superconducting undulator skeleton prepared in the step 1); wherein L2 is greater than L1;
3) curing the sprayed epoxy coating of step 2);
4) and (4) performing finish machining on the superconducting undulator skeleton of the cured epoxy coating, and removing redundant spraying to obtain the superconducting undulator skeleton after insulation treatment.
2. The method as claimed in claim 1, wherein in the step 2), the low-temperature epoxy glue is diluted by a diluent and then atomized and sprayed, and the high-pressure gas used for spraying is high-purity nitrogen.
3. A method according to claim 1 or 2, characterised in that in step 2) the areas which do not require the epoxy coating to adhere are protected before spraying.
4. The method of claim 3, wherein the sprayed epoxy coating of step 2) is cured according to a set epoxy glue temperature cure profile.
5. The method of claim 1 or 2, wherein the superconducting undulator skeleton after the epoxy coating of step 2) is placed in an oven for curing.
6. The method of claim 1, wherein the epoxy coating thickness L1 is 0.1 mm; the spraying thickness L2 is 0.15-0.2 mm.
7. A preparation method of a superconducting undulator magnetic pole comprises the following steps:
1) integrally processing and preparing an iron core framework and a magnetic pole of the superconducting undulator framework to obtain the superconducting undulator framework; wherein, the thickness L1 of the epoxy coating is reserved on the prepared superconducting undulator skeleton;
2) spraying an epoxy coating with the thickness of L2 on the superconducting undulator skeleton prepared in the step 1); wherein L2 is greater than L1;
3) curing the sprayed epoxy coating of step 2);
4) performing finish machining on the superconducting undulator skeleton of the cured epoxy coating, and removing redundant spraying to obtain the superconducting undulator skeleton after insulation treatment;
5) and preparing a superconducting undulator coil skeleton based on the superconducting undulator skeleton after insulation treatment, and then carrying out coil winding and vacuum epoxy impregnation on the superconducting undulator coil skeleton to obtain the superconducting undulator magnetic pole.
8. The method as claimed in claim 7, wherein in the step 2), the low-temperature epoxy glue is diluted by a diluent and then atomized and sprayed, and the high-pressure gas used for spraying is high-purity nitrogen.
9. The method of claim 7, wherein the epoxy coating thickness L1 is 0.1 mm; the spraying thickness L2 is 0.15-0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110570664.1A CN113399234A (en) | 2021-05-25 | 2021-05-25 | Epoxy spraying insulation treatment method for superconducting undulator framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110570664.1A CN113399234A (en) | 2021-05-25 | 2021-05-25 | Epoxy spraying insulation treatment method for superconducting undulator framework |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113399234A true CN113399234A (en) | 2021-09-17 |
Family
ID=77674976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110570664.1A Pending CN113399234A (en) | 2021-05-25 | 2021-05-25 | Epoxy spraying insulation treatment method for superconducting undulator framework |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113399234A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6344287B1 (en) * | 1997-04-14 | 2002-02-05 | Florida State University | High temperature compatible insulation for superconductors and method of applying insulation to superconductors |
| CN102755955A (en) * | 2012-07-31 | 2012-10-31 | 东莞市晶磁科技有限公司 | Amorphous magnetic core surface coating process |
| CN102945722A (en) * | 2012-11-27 | 2013-02-27 | 中国科学院上海应用物理研究所 | Magnesium diboride superconductive undulator |
| CN102956279A (en) * | 2012-10-25 | 2013-03-06 | 中国科学院上海应用物理研究所 | Undulator and manufacture method thereof |
| CN103128039A (en) * | 2011-12-01 | 2013-06-05 | 上海电气集团股份有限公司 | Coating method of winding amorphous iron core insulating coating |
| CN103440953A (en) * | 2013-09-17 | 2013-12-11 | 中国科学院上海应用物理研究所 | Superconducting undulator magnet |
-
2021
- 2021-05-25 CN CN202110570664.1A patent/CN113399234A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6344287B1 (en) * | 1997-04-14 | 2002-02-05 | Florida State University | High temperature compatible insulation for superconductors and method of applying insulation to superconductors |
| CN103128039A (en) * | 2011-12-01 | 2013-06-05 | 上海电气集团股份有限公司 | Coating method of winding amorphous iron core insulating coating |
| CN102755955A (en) * | 2012-07-31 | 2012-10-31 | 东莞市晶磁科技有限公司 | Amorphous magnetic core surface coating process |
| CN102956279A (en) * | 2012-10-25 | 2013-03-06 | 中国科学院上海应用物理研究所 | Undulator and manufacture method thereof |
| CN102945722A (en) * | 2012-11-27 | 2013-02-27 | 中国科学院上海应用物理研究所 | Magnesium diboride superconductive undulator |
| CN103440953A (en) * | 2013-09-17 | 2013-12-11 | 中国科学院上海应用物理研究所 | Superconducting undulator magnet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8943677B2 (en) | Method for joining core laminations by adhesive force to form a soft-magnetic laminated core | |
| EP3029693B1 (en) | Method of bonding nd-fe-b permanent magnets | |
| CN103128039B (en) | Coating method of winding amorphous iron core insulating coating | |
| EP3480009B1 (en) | A method for segmentation nd-fe-b permanent magnets | |
| CN101887787B (en) | Manufacturing method of large-diameter pillar insulator core | |
| CN109994309B (en) | Bonding method of neodymium iron boron magnet assembly | |
| CN113399234A (en) | Epoxy spraying insulation treatment method for superconducting undulator framework | |
| US6772503B1 (en) | Rotor assembly having bonded lamination stack | |
| CN109104055B (en) | Amorphous alloy axial flux motor stator core manufacturing method | |
| CN100490028C (en) | Block-shaped soft magnetic alloy lamination element and its manufacturing method | |
| CN113257560A (en) | Manufacturing process of rectangular nanocrystalline spraying magnetic core suitable for medium-high frequency environment | |
| CN109273237A (en) | A kind of neodymium iron boron processing method | |
| CN114628144B (en) | I-type nanocrystalline magnetic core and preparation method thereof | |
| CN101789652A (en) | Rotor coil processing method and rotor with magnet manufactured through method thereof | |
| CN114499076A (en) | Processing method of motor stator | |
| CN114024421A (en) | Bismaleimide resin matrix composite material wound electromagnetic wire and preparation method thereof | |
| JPS6178111A (en) | Manufacture of magnetic core | |
| CN111954363A (en) | Method for manufacturing small-aperture high-gradient magnetic field quadrupole lens | |
| CN109859904B (en) | Method for integrally forming insulating tube and conducting layer and insulating sleeve | |
| CN113037027B (en) | Layered magnetic conductive iron core forming device and method based on laser melting deposition process | |
| Yuan et al. | Magnets for HIRFL-CSR rings | |
| CN104376920A (en) | Method for improving machining quality of enamelling NbTi superconduction flat wire | |
| WO2023115255A1 (en) | Bonding method for ndfeb permanent magnetic steels, and method for preparing permanent magnet electric motor rotor | |
| CN212303262U (en) | Reliable insulating samarium cobalt permanent magnet integrated configuration | |
| CN217822313U (en) | Prevent switching power supply transformer of magnetic core crackle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210917 |
|
| RJ01 | Rejection of invention patent application after publication |