[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN106098442A - Vacuum interrupter surface treatment method and pole forming method - Google Patents

Vacuum interrupter surface treatment method and pole forming method Download PDF

Info

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
Application number
CN201610692007.3A
Other languages
Chinese (zh)
Inventor
袁钤亚
李小兰
谢群超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Senyuan Electric Co Ltd
Original Assignee
Henan Senyuan Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henan Senyuan Electric Co Ltd filed Critical Henan Senyuan Electric Co Ltd
Priority to CN201610692007.3A priority Critical patent/CN106098442A/en
Publication of CN106098442A publication Critical patent/CN106098442A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00Apparatus or processes specially adapted for the manufacture of electric switches
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04Coating
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/12Chemical modification
    • C08J7/123Treatment by wave energy or particle radiation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2383/00Characterised 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
    • C08J2383/04Polysiloxanes

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

Vacuum interrupter surface treatment method and pole forming method
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.
CN201610692007.3A 2016-08-19 2016-08-19 Vacuum interrupter surface treatment method and pole forming method Pending CN106098442A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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