CN106098442A - Vacuum interrupter surface treatment method and pole forming method - Google Patents
Vacuum interrupter surface treatment method and pole forming method Download PDFInfo
- Publication number
- CN106098442A CN106098442A CN201610692007.3A CN201610692007A CN106098442A CN 106098442 A CN106098442 A CN 106098442A CN 201610692007 A CN201610692007 A CN 201610692007A CN 106098442 A CN106098442 A CN 106098442A
- Authority
- CN
- China
- Prior art keywords
- vacuum interrupter
- preheating
- vacuum
- low temperature
- temperature plasma
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a kind of vacuum interrupter surface treatment method and pole forming method, belong to electrical equipment manufacturing technology field.The method uses air low temperature plasma that vacuum interrupter is carried out surface process, process rear surface is smeared state and is held high 36A 1 silane coupling agent, the bond strength of vacuum interrupter outer cladding silicone rubber and epoxy resin can be effectively improved, the electrical insulation properties of pole after enhancing molding, process technique is simple, easy and simple to handle.Wherein, the adhesive strength of vacuum interrupter and epoxy resin, at more than 700N/m, pole industrial frequency withstand voltage 95kV, will not puncture flashover.
Description
Technical field
The present invention relates to a kind of vacuum interrupter surface treatment method, also relate to a kind of pole forming method,
Belong to electrical equipment manufacturing technology field.
Background technology
Vacuum interrupter Surface coating has silicone rubber, but the surface of silicone rubber can be relatively low, with the caking property of epoxy resin
Can be poor, puncturing or flashover easily occurs in the pole after molding, causes transmission of electricity accident.Existing vacuum interrupter surface
Science and engineering skill adds silane coupling agent, though the bonding of silicone rubber and epoxy resin can be improved to a certain extent after being polished by surface silicon rubber
Power, but it is relatively complicated to process technique, operates the careless slightly electrical insulation properties the most likely affecting pole.
The patent of invention of publication No. CN105038620A discloses a kind of viscous with air for processing atmosphere raising fluorosioloxane rubber
The cold plasma treating method of knot property, including: 1) fluorosioloxane rubber is placed in cold plasma equipment, it is evacuated to vacuum
Less than 3Pa;2) being passed through compressed air, adjusting reciprocal of duty cycle is 10~30Pa;3) on-load voltage electric current fluorosioloxane rubber is carried out cold grade from
Daughter processes, power 120~140W, the time 120~240s;4) after processing in 5h, with the Kai Muluoke bonding fluorine of adhesive CH607
Silicone rubber and politef, vulcanize 30min at 160~170 DEG C,.The method can be by fluorosioloxane rubber and politef
Adhesion strength be promoted to more than 650N/m from 0, but the surface being not suitable for silicone rubber processes.
Summary of the invention
It is an object of the invention to provide a kind of vacuum interrupter surface treatment method.
Meanwhile, the present invention also provides for a kind of pole forming method.
In order to realize object above, the technical solution adopted in the present invention is:
A kind of vacuum interrupter surface treatment method, comprises the following steps:
1) use air low temperature plasma that vacuum interrupter carries out surface process, process power 70~90W, time 2
~2.5min, preheat after process, standby;
2) 36A-1 silane coupling agent is held high by the vacuum interrupter surface smear state in preheating,.
Step 1) in vacuum interrupter first clean with alcohol washes before carrying out surface process, pre-at 140~180 DEG C
Heat 80~100min.
Step 1) in use air low temperature plasma that vacuum interrupter carries out the concrete operations of surface process to be: be passed through
The compressed air being dried, arranges air pressure 2~5Pa, processes 2~2.5min under power 70~90W.Vacuum interrupter is vertically put
Putting in low temperature plasma equipment (holding high purchased from Guangzhou state), with fixture clamping arc-chutes upper and lower side, arc-chutes can revolve with fixture
Turn.Horizontal as X axis with arc-chutes, is longitudinally Y-axis, and plasma shower nozzle running status and parameter are set to: shower nozzle is at X
The axial speed of service is 20~30mm/s, and the speed of service of Y-axis divides two kinds, at step (i.e. at arc-chutes both ends of the surface fillet)
The speed of service 30~40mm/s, middle running speed 40~55mm/s, the rotary speed 5~10mm/s at up/down steps.
Step 1) in preheating temperature be 140~180 DEG C, the time 20~40min.On the one hand the purpose of preheating is to improve very
Empty arc-chutes and the bond strength of epoxy resin, on the other hand make epoxy resin shrink uniformly.
A kind of pole forming method, comprises the following steps:
1) use air low temperature plasma that vacuum interrupter carries out surface process, process power 70~90W, time 2
~2.5min, preheating, standby;
2) 36A-1 silane coupling agent, injection ring epoxy resins material are held high by the vacuum interrupter surface smear state in preheating, solidify and get final product.
Step 1) in vacuum interrupter first clean with alcohol washes before carrying out surface process, pre-at 140~180 DEG C
Heat 80~100min.
Step 1) in use air low temperature plasma that vacuum interrupter carries out the concrete operations of surface process to be: be passed through
The compressed air being dried, arranges air pressure 2~5Pa, processes 2~2.5min under power 70~90W.Vacuum interrupter is vertically put
Putting in low temperature plasma equipment (holding high purchased from Guangzhou state), with fixture clamping arc-chutes upper and lower side, arc-chutes can revolve with fixture
Turn.Horizontal as X axis with arc-chutes, is longitudinally Y-axis, and plasma shower nozzle running status and parameter are set to: shower nozzle is at X
The axial speed of service is 20~30mm/s, and the speed of service of Y-axis divides two kinds, at step (i.e. at arc-chutes both ends of the surface fillet)
The speed of service 30~40mm/s, middle running speed 40~55mm/s, the rotary speed 5~10mm/s at up/down steps.
Step 1) in preheating temperature be 140~180 DEG C, the time 20~40min.
Step 2) in injection ring epoxy resins material can use reaction and injection molding process.Consisting of of epoxy resin material: with matter
Amount is than meter, epoxy resin (such as bisphenol A type epoxy resin): firming agent (such as phthalic anhydride): filler is (such as SiO2): mill base=
100:100:250:2.25.Technological parameter is: epoxy resin material vacuum 1~10mbar, injection pressure 2~4bar (5~30kg
The injection time of epoxy resin material is 5~12min) inject rear pressurize 10~30min, dwell pressure 3~5bar, pressurize
5~10min are stood, the demoulding (mold temperature 140~145 DEG C) after end.
Step 2) in the concrete operations of solidification be: solidify 10~14h at temperature 130~150 DEG C.Preferably, at 140 DEG C
Solidification 12h.
Beneficial effects of the present invention:
The present invention uses air low temperature plasma that vacuum interrupter carries out surface process, and process rear surface is smeared state and held high
36A-1 silane coupling agent, can be effectively improved the bond strength of vacuum interrupter outer cladding silicone rubber and epoxy resin, solid after strengthening molding
The electrical insulation properties of sealed pole, processes technique simple, easy and simple to handle.Wherein, vacuum interrupter is bonding with epoxy resin by force
Degree, at more than 700N/m, pole industrial frequency withstand voltage 95kV, will not puncture flashover.
Detailed description of the invention
The present invention is only described in further detail by following embodiment, but does not constitute any limitation of the invention.
Embodiment 1
In the present embodiment, vacuum interrupter surface treatment method comprises the following steps:
1) vacuum interrupter is clean with alcohol washes, it is then placed in preheating 80min in 180 DEG C of baking ovens;
2) vacuum interrupter is vertically placed in low temperature plasma equipment (holding high purchased from Guangzhou state), goes out with fixture clamping
Arc chamber upper and lower side, arc-chutes can rotate with fixture;It is passed through dry compressed air, air pressure 5Pa is set, opens low temperature plasma
Equipment makes air low temperature plasma, carries out surface process, with arc-chutes to through alcohol washes the vacuum interrupter that preheats
Be laterally X axis, longitudinal direction is Y-axis, and plasma shower nozzle running status and parameter are set to: shower nozzle is in the operation of X axis
Speed is 20mm/s, and the speed of service of Y-axis divides two kinds, speed of service 30mm/ (i.e. at arc-chutes both ends of the surface fillet) at step
S, middle running speed 40mm/s, rotary speed 5mm/s at up/down steps, process power 90W, time 2.5min, after process
Place into preheating 20min in 180 DEG C of baking ovens, standby;
3) 36A-1 silane coupling agent (holding high purchased from Guangzhou state) is held high by the vacuum extinction chamber surface uniform application state in preheating.
In the present embodiment, pole forming method comprises the following steps: put into by the vacuum interrupter after above-mentioned process solid
In sealed pole mould, using reaction injection molding (APG) technique injection ring epoxy resins material, technological parameter is: epoxy resin material is true
Reciprocal of duty cycle 5mbar, weight 24kg, injection pressure 4bar, injection time 12min, dwell pressure 5bar, dwell time 30min, pressurize
10min, the demoulding, mold temperature 145 DEG C is stood after end;Consisting of of epoxy resin material: by quality ratio, epoxy resin (HE-
8369): firming agent (HH-8369): filler (X171): mill base (HC-2015)=100:100:250:2.25, above material is all purchased
From Shanghai Xiong Run resin company limited;Then at 140 DEG C of oven for curing 12h,.
Embodiment 2
In the present embodiment, vacuum interrupter surface treatment method comprises the following steps:
1) vacuum interrupter is clean with alcohol washes, it is then placed in preheating 100min in 140 DEG C of baking ovens;
2) vacuum interrupter is vertically placed in low temperature plasma equipment (holding high purchased from Guangzhou state), goes out with fixture clamping
Arc chamber upper and lower side, arc-chutes can rotate with fixture;It is passed through dry compressed air, air pressure 2Pa is set, opens low temperature plasma
Equipment makes air low temperature plasma, carries out surface process, with arc-chutes to through alcohol washes the vacuum interrupter that preheats
Be laterally X axis, longitudinal direction is Y-axis, and plasma shower nozzle running status and parameter are set to: shower nozzle is in the operation of X axis
Speed is 25mm/s, and the speed of service of Y-axis divides two kinds, speed of service 35mm/ (i.e. at arc-chutes both ends of the surface fillet) at step
S, middle running speed 45mm/s, rotary speed 8mm/s at up/down steps, process power 70W, time 2min, after process again
Put into 140 DEG C of baking oven preheating 40min, standby;
3) 36A-1 silane coupling agent is held high by the vacuum extinction chamber surface uniform application state in preheating.
In the present embodiment, pole forming method comprises the following steps: put into by the vacuum interrupter after above-mentioned process solid
In sealed pole mould, using reaction injection molding (APG) technique injection ring epoxy resins material, technological parameter is: epoxy resin material is true
Reciprocal of duty cycle 5mbar, weight 6kg, injection pressure 2bar, injection time 5min, dwell pressure 3bar, dwell time 10min, pressurize is tied
5min, the demoulding, mold temperature 140 DEG C is stood after bundle;Consisting of of epoxy resin material: by quality ratio, epoxy resin (HE-
8369): firming agent (HH-8369): filler (X171): mill base (HC-2015)=100:100:250:2.25;Then at 130 DEG C of bakings
Solidification 14h in case,.
Embodiment 3
In the present embodiment, vacuum interrupter surface treatment method comprises the following steps:
1) vacuum interrupter is clean with alcohol washes, it is then placed in preheating 90min in 160 DEG C of baking ovens;
2) vacuum interrupter is vertically placed in low temperature plasma equipment (holding high purchased from Guangzhou state), goes out with fixture clamping
Arc chamber upper and lower side, arc-chutes can rotate with fixture;It is passed through dry compressed air, air pressure 2Pa is set, opens low temperature plasma
Equipment makes air low temperature plasma, carries out surface process, with arc-chutes to through alcohol washes the vacuum interrupter that preheats
Be laterally X axis, longitudinal direction is Y-axis, and plasma shower nozzle running status and parameter are set to: shower nozzle is in the operation of X axis
Speed is 30mm/s, and the speed of service of Y-axis divides two kinds, speed of service 40mm/ (i.e. at arc-chutes both ends of the surface fillet) at step
S, middle running speed 55mm/s, rotary speed 10mm/s at up/down steps, process power 80W, time 2.5min, after process
Place into preheating 30min in 160 DEG C of baking ovens, standby;
3) 36A-1 silane coupling agent is held high by the vacuum extinction chamber surface uniform application state in preheating.
In the present embodiment, pole forming method comprises the following steps: put into by the vacuum interrupter after above-mentioned process solid
In sealed pole mould, using reaction injection molding (APG) technique injection ring epoxy resins material, technological parameter is: epoxy resin material is true
Reciprocal of duty cycle 5mbar, weight 9kg, injection pressure 3.5bar, injection time 7min, dwell pressure 3.5bar, dwell time 14min, protect
Pressure stands 8min, the demoulding, mold temperature 140 DEG C after terminating;Consisting of of epoxy resin material: by quality ratio, epoxy resin
(HE-8369): firming agent (HH-8369): filler (X171): mill base (HC-2015)=100:100:250:2.25;Then at 150
DEG C oven for curing 10h,.
Comparative example 1
In this comparative example, the surface treatment method of vacuum interrupter is substantially with embodiment 3, differs only in and does not uses primary coat
Agent, or use other commercially available model silane coupling agents, replace with silane coupling agent 1#, silane coupling agent 2#, silane coupling agent 3#.Pole molding
Method is with embodiment 3.
Comparative example 2
In this comparative example, vacuum interrupter surface treatment method comprises the following steps:
1) crocus cloth uniform grinding vacuum interrupter is used;
2) vacuum interrupter after polishing is clean with alcohol washes, is then placed in preheating 90min in 160 DEG C of baking ovens;
3) 36A-1 silane coupling agent is held high by the vacuum extinction chamber surface uniform application state in preheating.Pole forming method is with real
Execute example 3.
Test example
Bond strength method of testing is: bond strength method of testing is with reference to GB/T 2791-1995 adhesive T peel strength
Test, result see table 1.
Table 1 vacuum interrupter and the bond strength of epoxy resin
Claims (10)
1. a vacuum interrupter surface treatment method, it is characterised in that: comprise the following steps:
1) use air low temperature plasma that vacuum interrupter carries out surface process, process power 70~90W, the time 2~
2.5min, preheats after process, standby;
2) 36A-1 silane coupling agent is held high by the vacuum interrupter surface smear state in preheating,.
Method the most according to claim 1, it is characterised in that: step 1) in vacuum interrupter carry out surface process before elder generation
Clean with alcohol washes, at 140~180 DEG C, preheat 80~100min.
Method the most according to claim 1, it is characterised in that: step 1) in use air low temperature plasma vacuum is gone out
Arc chamber carries out the concrete operations of surface process: be passed through dry compressed air, arranges air pressure 2~5Pa, at power 70~90W
Lower process 2~2.5min.
Method the most according to claim 1, it is characterised in that: step 1) in preheating temperature be 140~180 DEG C, the time
20~40min.
5. a pole forming method, it is characterised in that: comprise the following steps:
1) use air low temperature plasma that vacuum interrupter carries out surface process, process power 70~90W, the time 2~
2.5min, preheating, standby;
2) 36A-1 silane coupling agent, injection ring epoxy resins material are held high by the vacuum interrupter surface smear state in preheating, solidify and get final product.
Method the most according to claim 5, it is characterised in that: step 1) in vacuum interrupter carry out surface process before elder generation
Clean with alcohol washes, at 140~180 DEG C, preheat 80~100min.
Method the most according to claim 5, it is characterised in that: step 1) in use air low temperature plasma vacuum is gone out
Arc chamber carries out the concrete operations of surface process: be passed through dry compressed air, arranges air pressure 2~5Pa, at power 70~90W
Lower process 2~2.5min.
Method the most according to claim 5, it is characterised in that: step 1) in preheating temperature be 140~180 DEG C, the time
20~40min.
Method the most according to claim 5, it is characterised in that: step 2) in injection ring epoxy resins material use reaction injection become
Type technique, technological parameter is: epoxy resin material vacuum 1~10mbar, and injection pressure 2~4bar has injected rear pressurize 10
~30min, dwell pressure 3~5bar, pressurize stands 5~10min after terminating, the demoulding.
Method the most according to claim 9, it is characterised in that: step 2) in solidification concrete operations be: temperature 130~
10~14h are solidified at 150 DEG C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610692007.3A CN106098442A (en) | 2016-08-19 | 2016-08-19 | Vacuum interrupter surface treatment method and pole forming method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610692007.3A CN106098442A (en) | 2016-08-19 | 2016-08-19 | Vacuum interrupter surface treatment method and pole forming method |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106098442A true CN106098442A (en) | 2016-11-09 |
Family
ID=58069791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610692007.3A Pending CN106098442A (en) | 2016-08-19 | 2016-08-19 | Vacuum interrupter surface treatment method and pole forming method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106098442A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108648965A (en) * | 2018-03-26 | 2018-10-12 | 盐城博鸣信息科技有限公司 | A kind of preparation process of solid sealing electrode pole of high voltage vacuum breaker |
CN109103047A (en) * | 2018-08-27 | 2018-12-28 | 巨东电气有限公司 | A kind of pole of electric power |
CN109166748A (en) * | 2018-09-10 | 2019-01-08 | 河南长征电气有限公司 | A kind of sealing technique of outdoor high-voltage vacuum breaker fixed sealing type pole module |
CN111863485A (en) * | 2020-06-30 | 2020-10-30 | 国网电力科学研究院有限公司 | Circuit breaker pole part and manufacturing method thereof |
WO2024021374A1 (en) * | 2022-07-26 | 2024-02-01 | 云南电网有限责任公司临沧供电局 | Method for treating surface of arc extinguishing chamber, and arc extinguishing device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1681063A (en) * | 2004-04-09 | 2005-10-12 | 厦门华电开关有限公司 | Method of disposable sealed silicon rubber insulating layer of vacuum arc chutes |
CN101127280A (en) * | 2007-08-03 | 2008-02-20 | 北海银河开关设备有限公司 | Production technology for solid sealing electrode pole of high voltage vacuum breaker |
CN102163510A (en) * | 2011-04-15 | 2011-08-24 | 麦克奥迪(厦门)电气股份有限公司 | Production process of solid-packaged polar pole |
CN105085962A (en) * | 2015-08-27 | 2015-11-25 | 南昌航空大学 | Cold plasma treatment method of using mixed gas of argon and oxygen to create atmosphere for improving adhesiveness of fluorosilicone rubber |
CN105788916A (en) * | 2014-12-18 | 2016-07-20 | 北京电研华源电力技术有限公司 | Medium-pressure embedded pole and manufacturing method thereof |
-
2016
- 2016-08-19 CN CN201610692007.3A patent/CN106098442A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1681063A (en) * | 2004-04-09 | 2005-10-12 | 厦门华电开关有限公司 | Method of disposable sealed silicon rubber insulating layer of vacuum arc chutes |
CN101127280A (en) * | 2007-08-03 | 2008-02-20 | 北海银河开关设备有限公司 | Production technology for solid sealing electrode pole of high voltage vacuum breaker |
CN102163510A (en) * | 2011-04-15 | 2011-08-24 | 麦克奥迪(厦门)电气股份有限公司 | Production process of solid-packaged polar pole |
CN105788916A (en) * | 2014-12-18 | 2016-07-20 | 北京电研华源电力技术有限公司 | Medium-pressure embedded pole and manufacturing method thereof |
CN105085962A (en) * | 2015-08-27 | 2015-11-25 | 南昌航空大学 | Cold plasma treatment method of using mixed gas of argon and oxygen to create atmosphere for improving adhesiveness of fluorosilicone rubber |
Non-Patent Citations (1)
Title |
---|
王明磊: ""表面处理对热硫化硅橡胶粘接性能的影响"", 《粘接》 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108648965A (en) * | 2018-03-26 | 2018-10-12 | 盐城博鸣信息科技有限公司 | A kind of preparation process of solid sealing electrode pole of high voltage vacuum breaker |
CN109103047A (en) * | 2018-08-27 | 2018-12-28 | 巨东电气有限公司 | A kind of pole of electric power |
CN109166748A (en) * | 2018-09-10 | 2019-01-08 | 河南长征电气有限公司 | A kind of sealing technique of outdoor high-voltage vacuum breaker fixed sealing type pole module |
CN111863485A (en) * | 2020-06-30 | 2020-10-30 | 国网电力科学研究院有限公司 | Circuit breaker pole part and manufacturing method thereof |
WO2024021374A1 (en) * | 2022-07-26 | 2024-02-01 | 云南电网有限责任公司临沧供电局 | Method for treating surface of arc extinguishing chamber, and arc extinguishing device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106098442A (en) | Vacuum interrupter surface treatment method and pole forming method | |
JP2011500383A5 (en) | ||
CN105419229B (en) | A kind of hollow combined insulator winding pipe and preparation method thereof | |
CN102179341A (en) | Vacuum pressure paint dipping device | |
CN104691779B (en) | A kind of process changing repairing for composite main blade iron clad | |
CN104319088A (en) | Preparation process of vacuum epoxy resin casting type mutual inductor | |
CN102755955B (en) | Amorphous magnetic core surface coating process | |
CN104119644B (en) | Encapsulating material for transformer | |
CN105913983B (en) | Production method of porcelain core composite insulator | |
CN106374690A (en) | Stator wire rod insulation onsite repairing method for large generator | |
CN105788916B (en) | Pole and its manufacture method are pressed in one kind | |
CN103897643A (en) | Room-temperature cured high heat-proof epoxy adhesive | |
CN101781444A (en) | Method for preparing rare-earth-modified glass-fiber epoxy-resin composite materials | |
CN112848555A (en) | Fiber metal laminate composite material and preparation method thereof | |
CN104867635A (en) | Processing method for epoxy resin vacuum impregnation glass fiber hollow composite insulator | |
CN103601528A (en) | Local coating defect repairing method for carbon/carbon composite material | |
CN104368758A (en) | Resin surface treatment-based method for preparing V-process EPS foam mold | |
CN104124005A (en) | Semi-conductive layer processing technique for solid insulation switches | |
CN105219023A (en) | A kind of preparation method of same with thermosetting compound material | |
CN102649302A (en) | Forming process for covering carbon fiber on outer surface of structural part | |
CN103289314B (en) | A kind of improvement glass-reinforced plastic material | |
CN204080141U (en) | The silver-plated special-shaped site protection device of rotor local | |
CN103714923B (en) | A kind of solid insulation process of surface treatment | |
CN104371617A (en) | Production method of glue for filling casting slits | |
CN102504203A (en) | Encapsulation material used for encapsulating DG4 iron core coils, preparation method and encapsulation method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |