CN106816306A - The pouring technology of reactor winding - Google Patents
The pouring technology of reactor winding Download PDFInfo
- Publication number
- CN106816306A CN106816306A CN201710183244.1A CN201710183244A CN106816306A CN 106816306 A CN106816306 A CN 106816306A CN 201710183244 A CN201710183244 A CN 201710183244A CN 106816306 A CN106816306 A CN 106816306A
- Authority
- CN
- China
- Prior art keywords
- pouring
- reactor winding
- coil
- vacuum
- technological parameter
- 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.)
- Granted
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/42—Casting under special conditions, e.g. vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/44—Measuring, controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of pouring technology of reactor winding of the present invention, comprises the following steps：S1, castable preheated, is mixed, being deaerated；S2, will cast fill and casting mold preheated；S3, the coil after coiling is placed in after preheating in casting mold；Vacuum pouring is carried out in S4, the casting mold for adding in step S3 will castable after degassing；S5, the coil after vacuum pouring is solidified；S6, the coil after solidification is carried out into stripping operation；S7, the coil after the demoulding is carried out into solidify afterwards operation, obtain final product the reactor winding.The reactor winding that above-mentioned pouring technology is obtained has the following advantages that pours into a mould abundant, uniform, bubble-free, and electric property is good.By the temperature in strict control casting process, vacuum, time and cast flow, fully ensure that coil pours into a mould abundant, uniform, bubble-free；Mechanical strength is good.Processed by prolonged solidify afterwards, fully ensured that the mechanical strength of product.
Description
Technical field
The present invention relates to reactor technical field, more particularly to a kind of pouring technology of reactor winding.
Background technology
Height coupling split reactor is the key technology of Large Copacity short circuit current breaking device Research And Engineering application, at present
Temporarily without equipment specification.Big coupling split reactor coil shape size with a high standard is big, to casting equipment, materials, cast
The requirement such as technique is very harsh.
Because the voltage class of big coupling split reactor with a high standard is high, capacity is big, to making such product coil profile chi
Very little big, maximum coil diameter about 2mm, height about 2m, for ensure product globality, it is necessary to the cast of 2 layer line circles together, this
More increase the difficulty of cast.
Accordingly, it would be desirable to develop a kind of pouring technology for being suitable for coupling split reactor coil high.
The content of the invention
Based on this, it is an object of the invention to provide a kind of pouring technology of coupling split reactor coil high.
Specific technical scheme is as follows：
A kind of pouring technology of reactor winding, comprises the following steps：
S1, castable preheated, is mixed, being deaerated；
S2, will cast fill and casting mold preheated；
S3, the coil after coiling is placed in after preheating in casting mold；
Vacuum pouring is carried out in S4, the casting mold for adding in step S3 will castable after degassing；
S5, the coil after vacuum pouring is solidified；
S6, the coil after solidification is carried out into stripping operation；
S7, the coil after the demoulding is carried out into solidify afterwards operation, obtain final product the reactor winding.
Wherein in some embodiments, in step S1, the castable includes the component of following weight portion：
Wherein in some embodiments, the resin is pulled together row FCI selected from Xiamen；The toughener pulls together to go selected from Xiamen
DY040CI；The curing agent is pulled together row HY905CI selected from Xiamen；The accelerator is pulled together row DY062CI selected from Xiamen.
Wherein in some embodiments, in step S1, the technological parameter of the mixing is：Time is 70-90min；
Temperature is 60-65 DEG C；Vacuum is 100-200Pa；The technological parameter of the degassing is：Time is 40-60min；Vacuum is
100-200Pa。
Wherein in some embodiments, in step S2, the material of the casting mold is stainless steel；The technique of the preheating
Parameter is：It is warming up to 100-120 DEG C；Programming rate is 18-22 DEG C/h.
Wherein in some embodiments, in step S4, the technological parameter of the vacuum pouring is：Vacuum is ＜ 200Pa；
The flow of castable is 1.5-2kg/min；The duration of pouring is ＜ 3h；Pouring temperature is 75-80min.
Wherein in some embodiments, in step S5, the technological parameter of the solidification is：Temperature is 80-120 DEG C；Time
It is 15-19h.
Wherein in some embodiments, in step S6, the technological parameter of the demoulding is：Temperature is 80 DEG C of ＜；Time is
1-3h。
Wherein in some embodiments, in step S7, the technological parameter of the solidify afterwards is：Temperature is 110-130 DEG C；When
Between be 11-13h.
It is a further object of the present invention to provide a kind of reactor winding.
Specific technical scheme is as follows：
The reactor winding that above-mentioned pouring technology is prepared.
For coil cast, difficulty is mainly reflected in the following aspects：
1st, it is high to mold performance requirement.Mould had both been required to ensure consistency for a long time under high temperature, high vacuum, and again must
Good thermal conductivity must be ensured, it is ensured that cast pressure, quick.Using the casting mold of stainless steel in above-mentioned pouring technology,
The deformation of casting process coil can be reduced, it is ensured that the circularity and surface quality of coil cast.Ensure coil between different-diameter
The concentricity of cast, it is ensured that be smoothly set with after coil casting complete.
2nd, the batch mixing stirring in casting process is required high.It is required that guarantee stirs, fully, can ensure subsequently to pour
Bubble-free is produced during note, fully ensures that casting quality.
When batch mixing is stirred, it is necessary to assure temperature and vacuum, under conditions of temperature and vacuum is reached, fully stirred
Mix, deaerate, bubble-free is produced in so just can guarantee that follow-up casting process, it is ensured that casting quality.
3rd, it is strict to the duration of pouring, temperature and vacuum degree control.Cast must be completed within the time of regulation, just be can guarantee that
Cast is abundant, full.In particularly vacuum pouring stage, it is necessary to control cast flow, cast is completed at the appointed time, could be really
Protect cast uniform, full.
During vacuum pouring, it is necessary to reach the temperature and vacuum of regulation, during cast, flow is controlled, uniform, linear pours
Note, makes whole cast smooth.After casting complete, to continue to ensure temperature and vacuum, so just can guarantee that cast is uniform, full
It is full.
4th, there must be solidify afterwards technique.It is just necessary after casting complete, solidification, it is desirable to ensure the mechanical strength of whole coil
Solidify afterwards treatment is carried out at high temperature, just can guarantee that 2 layer line circle mechanical strengths being cast in together are good, meet properties of product need
Ask.
The solidification in relatively previous stage, after coil sloughs mould, is solidified again, and solidification temperature is higher, evenly,
By more than 10 solidify afterwards of hour, thoroughly ensure coil sizing, mechanical strength is good.
5th, the reactor winding that above-mentioned pouring technology is obtained has the following advantages that：
(1) coil of super large standard can be poured into a mould, coil diameter up to Φ 2000mm, highly up to 2000mm；
(2) abundant, uniform, bubble-free is poured into a mould, electric property is good.By the temperature in strict control casting process, very
Reciprocal of duty cycle, time and cast flow, fully ensure that coil pours into a mould abundant, uniform, bubble-free.
(3) mechanical strength is good.Processed by prolonged solidify afterwards, fully ensured that the mechanical strength of product.
Specific embodiment
For the ease of understanding the present invention, the present invention will be described more fully below.But, the present invention can be with perhaps
More different form is realized, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is to make
Understanding to the disclosure is more thorough comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
The arbitrary and all of combination of the Listed Items of pass.
Embodiment 1
A kind of pouring technology of reactor winding of the present embodiment, comprises the following steps：
S1, castable preheated, is mixed, being deaerated；
The castable includes the component of following weight portion：
The resin is pulled together row FCI selected from Xiamen；The toughener is pulled together row DY040CI selected from Xiamen；The curing agent
Pull together row HY905CI selected from Xiamen；The accelerator is pulled together row DY062CI selected from Xiamen；
The technological parameter of the mixing is：Time is 80min；Temperature is 60 DEG C；Vacuum is 150Pa；It is described de-
The technological parameter of gas is：Time is 50min；Vacuum is 200Pa.
S2, will cast fill and casting mold preheated；
The material of the casting mold is stainless steel；The technological parameter of the preheating is：It is warming up to 110 DEG C；Programming rate
It is 20 DEG C/h.
S3, the coil after coiling is placed in after preheating in casting mold；
Vacuum pouring is carried out in S4, the casting mold for adding in step S3 will castable after degassing；
Vacuum is ＜ 200Pa；The flow of castable is 2kg/min；The duration of pouring is ＜ 3h；Pouring temperature is 75-80
℃；
S5, the coil after vacuum pouring is solidified；
The technological parameter of the solidification is：90℃；Time is 15h；
S6, the coil after solidification is carried out into stripping operation；
The technological parameter of the demoulding is：Temperature is 80 DEG C of ＜；Time is 2h；
S7, the coil after the demoulding is carried out into solidify afterwards operation, obtain final product the reactor winding；
The technological parameter of the solidify afterwards is：Temperature is 110 DEG C；Time is 11h.
Embodiment 2
A kind of pouring technology of reactor winding of the present embodiment, comprises the following steps：
S1, castable preheated, is mixed, being deaerated；
The castable includes the component of following weight portion：
The resin is pulled together row FCI selected from Xiamen；The toughener is pulled together row DY040CI selected from Xiamen；The curing agent
Pull together row HY905CI selected from Xiamen；The accelerator is pulled together row DY062CI selected from Xiamen；
The technological parameter of the mixing is：Time is 70min；Temperature is 65 DEG C；Vacuum is 100Pa；It is described de-
The technological parameter of gas is：Time is 40min；Vacuum is 100Pa.
S2, will cast fill and casting mold preheated；
The material of the casting mold is stainless steel；The technological parameter of the preheating is：It is warming up to 120 DEG C；Programming rate
It is 22 DEG C/h.
S3, the coil after coiling is placed in after preheating in casting mold；
Vacuum pouring is carried out in S4, the casting mold for adding in step S3 will castable after degassing；
Vacuum is ＜ 200Pa；The flow of castable is 1.5kg/min；The duration of pouring is ＜ 3h；Pouring temperature is 75-
80℃；
S5, the coil after vacuum pouring is solidified；
The technological parameter of the solidification is：100℃；Time is 15h；
S6, the coil after solidification is carried out into stripping operation；
The technological parameter of the demoulding is：Temperature is 80 DEG C of ＜；Time is 3h；
S7, the coil after the demoulding is carried out into solidify afterwards operation, obtain final product the reactor winding；
The technological parameter of the solidify afterwards is：Temperature is 120 DEG C；Time is 12h.
Embodiment 3
A kind of pouring technology of reactor winding of the present embodiment, comprises the following steps：
S1, castable preheated, is mixed, being deaerated；
The castable includes the component of following weight portion：
The resin is pulled together row FCI selected from Xiamen；The toughener is pulled together row DY040CI selected from Xiamen；The curing agent
Pull together row HY905CI selected from Xiamen；The accelerator is pulled together row DY062CI selected from Xiamen；
The technological parameter of the mixing is：Time is 90min；Temperature is 63 DEG C；Vacuum is 180Pa；It is described de-
The technological parameter of gas is：Time is 50min；Vacuum is 200Pa.
S2, will cast fill and casting mold preheated；
The material of the casting mold is stainless steel；The technological parameter of the preheating is：It is warming up to 110 DEG C；Programming rate
It is 18 DEG C/h.
S3, the coil after coiling is placed in after preheating in casting mold；
Vacuum pouring is carried out in S4, the casting mold for adding in step S3 will castable after degassing；
Vacuum is ＜ 200Pa；The flow of castable is 2kg/min；The duration of pouring is ＜ 3h；Pouring temperature is 75 DEG C；
S5, the coil after vacuum pouring is solidified；
The technological parameter of the solidification is：110℃；Time is 19h；
S6, the coil after solidification is carried out into stripping operation；
The technological parameter of the demoulding is：Temperature is 80 DEG C of ＜；Time is 2h；
S7, the coil after the demoulding is carried out into solidify afterwards operation, obtain final product the reactor winding；
The technological parameter of the solidify afterwards is：Temperature is 130 DEG C；Time is 12h.
Application test
| Bending strength | Tensile strength | |
| Embodiment 1 | 67MPa | 192MPa |
| Embodiment 2 | 86MPa | 264MPa |
| Embodiment 3 | 87MPa | 302MPa |
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of pouring technology of reactor winding, it is characterised in that comprise the following steps：
S1, castable preheated, is mixed, being deaerated；
S2, will cast fill and casting mold preheated；
In S3, the casting mold that the coil after coiling is placed in after preheating；
Vacuum pouring is carried out in S4, the casting mold for adding in step S3 will castable after degassing；
S5, the coil after vacuum pouring is solidified；
S6, the coil after solidification is carried out into stripping operation；
S7, the coil after the demoulding is carried out into solidify afterwards operation, obtain final product the reactor winding.
2. the pouring technology of reactor winding according to claim 1, it is characterised in that in step S1, the castable
Component including following weight portion：
3. the pouring technology of reactor winding according to claim 2, it is characterised in that the resin is pulled together selected from Xiamen
Row FCI；The toughener is pulled together row DY040CI selected from Xiamen；The curing agent is pulled together row HY905CI selected from Xiamen；The rush
Enter agent to pull together row DY062CI selected from Xiamen.
4. the pouring technology of the reactor winding according to claim any one of 1-3, it is characterised in that in step S1, institute
The technological parameter for stating mixing is：Time is 70-90min；Temperature is 60-65 DEG C；Vacuum is 100-200Pa；It is described de-
The technological parameter of gas is：Time is 40-60min；Vacuum is 100-200Pa.
5. the pouring technology of the reactor winding according to claim any one of 1-3, it is characterised in that in step S2, institute
The material for stating casting mold is stainless steel；The technological parameter of the preheating is：It is warming up to 100-120 DEG C；Programming rate is 18-22
℃/h。
6. the pouring technology of the reactor winding according to claim any one of 1-3, it is characterised in that in step S4, institute
The technological parameter for stating vacuum pouring is：Vacuum is ＜ 200Pa；The flow of castable is 1.5-2kg/min；The duration of pouring is ＜
3h；Pouring temperature is 75-80 DEG C.
7. the pouring technology of the reactor winding according to claim any one of 1-3, it is characterised in that in step S5, institute
The technological parameter for stating solidification is：Temperature is 80-120 DEG C；Time is 15-19h.
8. the pouring technology of the reactor winding according to claim any one of 1-3, it is characterised in that in step S6, institute
The technological parameter for stating the demoulding is：Temperature is 80 DEG C of ＜；Time is 1-3h.
9. the pouring technology of the reactor winding according to claim any one of 1-3, it is characterised in that in step S7, institute
The technological parameter for stating solidify afterwards is：Temperature is 110-130 DEG C；Time is 11-13h.
10. the reactor winding that the pouring technology described in any one of claim 1-9 is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710183244.1A CN106816306B (en) | 2017-03-24 | 2017-03-24 | The pouring technology of reactor winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710183244.1A CN106816306B (en) | 2017-03-24 | 2017-03-24 | The pouring technology of reactor winding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106816306A true CN106816306A (en) | 2017-06-09 |
| CN106816306B CN106816306B (en) | 2019-01-22 |
Family
ID=59116559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710183244.1A Active CN106816306B (en) | 2017-03-24 | 2017-03-24 | The pouring technology of reactor winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106816306B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054578A (en) * | 2010-10-29 | 2011-05-11 | 东莞市华胜展鸿电子科技有限公司 | Method for casting full-resin transformer coil |
| CN103943351A (en) * | 2014-04-29 | 2014-07-23 | 天津维可特电力科技有限公司 | High-voltage winding die pouring technology with filler of dry type transformer |
| CN103963200A (en) * | 2014-04-23 | 2014-08-06 | 南通东源互感器制造有限公司 | Pouring method for current transformer |
| CN104290226A (en) * | 2014-01-08 | 2015-01-21 | 国家电网公司 | Forming method for 35 KV and below potential transformer with low partial discharge level |
| CN204966272U (en) * | 2015-10-14 | 2016-01-13 | 国家电网公司 | Pouring device of dry -type transformer coil |
| CN105261442A (en) * | 2015-09-12 | 2016-01-20 | 安徽互感器有限公司 | Outdoor voltage transformer with large structure and casting technology of outdoor voltage transformer |
-
2017
- 2017-03-24 CN CN201710183244.1A patent/CN106816306B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054578A (en) * | 2010-10-29 | 2011-05-11 | 东莞市华胜展鸿电子科技有限公司 | Method for casting full-resin transformer coil |
| CN104290226A (en) * | 2014-01-08 | 2015-01-21 | 国家电网公司 | Forming method for 35 KV and below potential transformer with low partial discharge level |
| CN103963200A (en) * | 2014-04-23 | 2014-08-06 | 南通东源互感器制造有限公司 | Pouring method for current transformer |
| CN103943351A (en) * | 2014-04-29 | 2014-07-23 | 天津维可特电力科技有限公司 | High-voltage winding die pouring technology with filler of dry type transformer |
| CN105261442A (en) * | 2015-09-12 | 2016-01-20 | 安徽互感器有限公司 | Outdoor voltage transformer with large structure and casting technology of outdoor voltage transformer |
| CN204966272U (en) * | 2015-10-14 | 2016-01-13 | 国家电网公司 | Pouring device of dry -type transformer coil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106816306B (en) | 2019-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103203445B (en) | A kind of preparation method of cast copper cage rotor | |
| US20170266882A1 (en) | Method for manufacturing composite product from chopped fiber reinforced thermosetting resin by 3d printing | |
| CN104467322B (en) | A kind of poured with epoxy resin technique of motor stator winding | |
| JP5976284B2 (en) | Method for producing dust core and method for producing powder for magnetic core | |
| CN104867635B (en) | Processing method for epoxy resin vacuum impregnation glass fiber hollow composite insulator | |
| CN106977927A (en) | A kind of high intensity add-on type liquid silicon rubber maceration extract and its preparation and forming method | |
| CA2851959A1 (en) | Coil support members | |
| CN104292767B (en) | Vacuum casting mold material used for electrical insulation parts, and preparation method of mold | |
| CN106280278A (en) | Dry-type transformer or dry type mutual inductor speed cured epoxy resin castable and preparation and application thereof | |
| CN106816306A (en) | The pouring technology of reactor winding | |
| CN103143588B (en) | High-strength aluminium wire producing method | |
| CN107096871A (en) | Accelerate precoated sand of cast member shaping speed and preparation method thereof | |
| CN102504203B (en) | Preparation method and encapsulation method for encapsulation material used for encapsulating DG4 iron core coils | |
| CN109551787A (en) | A kind of advanced pultrusion method and its molding machine of composite material section bar | |
| CN104599834A (en) | Manufacturing method for thermoplastic compound macromolecule bonded magnet | |
| CN109627769B (en) | Liquid metal-based deformation memory composite material and preparation method and application thereof | |
| CN106009531A (en) | Method for preparing high-rigidity high-modulus carbon fiber prepreg | |
| CN105778426A (en) | Preparation and application of high-wettability epoxy resin composite material | |
| CN114093653A (en) | Epoxy resin pouring preparation method for dry-type transformer coil | |
| JPS6010533B2 (en) | Molding resin composition | |
| CN104387788A (en) | Casting materials and casting method for 35kV-grade large-capacity dry main transformer coil | |
| JPS6148541A (en) | Manufacture of fiber reinforced copper type composite material | |
| CN109676755A (en) | A kind of production method of ceramic mold | |
| CN105713417A (en) | Production technology for glass fiber composite I-beam | |
| CN113004658B (en) | Thermosetting composite material with magnetic control conversion electric conduction and heat conduction characteristics and preparation method thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |