CN110374977A - The Fast Installation formula corrosion protection method of warship ship fastener - Google Patents
The Fast Installation formula corrosion protection method of warship ship fastener Download PDFInfo
- Publication number
- CN110374977A CN110374977A CN201910657748.1A CN201910657748A CN110374977A CN 110374977 A CN110374977 A CN 110374977A CN 201910657748 A CN201910657748 A CN 201910657748A CN 110374977 A CN110374977 A CN 110374977A
- Authority
- CN
- China
- Prior art keywords
- nut cap
- fastener
- rubber nut
- warship ship
- sealant
- 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
- 238000005260 corrosion Methods 0.000 title claims abstract description 27
- 230000007797 corrosion Effects 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229920001971 elastomer Polymers 0.000 claims abstract description 45
- 239000005060 rubber Substances 0.000 claims abstract description 43
- 239000003973 paint Substances 0.000 claims abstract description 17
- 239000000565 sealant Substances 0.000 claims abstract description 17
- 239000012459 cleaning agent Substances 0.000 claims abstract description 4
- 239000004519 grease Substances 0.000 claims abstract description 4
- 230000002269 spontaneous effect Effects 0.000 claims abstract description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 19
- 238000007711 solidification Methods 0.000 claims description 12
- 230000008023 solidification Effects 0.000 claims description 12
- 239000004588 polyurethane sealant Substances 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 2
- 238000010422 painting Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 description 9
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 210000002966 serum Anatomy 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/004—Sealing; Insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/008—Corrosion preventing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/14—Cap nuts; Nut caps or bolt caps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
Abstract
The present invention relates to a kind of Fast Installation formula corrosion protection methods of warship ship fastener, are applied to chemical surface treatment field.The size and specification for the warship ship fastener protected needed for being first depending on, prepare the rubber nut cap of dimension in advance；The surfaces externally and internally of warship ship fastener, installation part outer surface and rubber nut cap, naturally dry are cleaned with grease cleaning agent；Sealant is inserted in rubber nut cap, rubber nut cap is buckled in warship ship fastener, the root of rubber nut cap comes into full contact with installation part surface Shi Yingyou sealant spilling, and the sealant overflowed around erasing in time；Paint, sealant spontaneous curing are coated in the outer surface of rubber nut cap, paint is done certainly.The present invention solves the problems, such as that the corrosion of warship ship fastener under exceedingly odious marine environment is anti-, the foreign matter that can be effectively isolated in steam, salt fog and air, it is simple and quick, it can be used for the initial protection of fastener before product export, it can also be used to the secondary protection of fastener during naval vessel is on active service.
Description
Technical field
The present invention is applied to chemical surface treatment field.
Background technique
Carbon steel class fastener good mechanical properties, it is at low cost, it is widely used in the component connection of naval vessel and carrier arming
Fastening.To improve corrosion resistance of the warship ship fastener under naval air environment, " structural alloy steel, stainless steel and its surface
The research of ceramic coating corrosive nature " (Master's thesis, Xu Changsheng, Wuhan Inst. of Material Protection, 2012) point out that surface can be passed through
Modification technology improves the corrosion resistance of steel alloy and stainless steel support, as Zincing passivation, Zinc-nickel alloy electroplating, Dacroment apply
Layer etc..But practical experience shows to only rely on Coating layer in the case where atmospheric environment is more severe and be not enough to
Effect protection, and it is difficult to realize the protection on the spot to fastener has been installed." stainless steel technology and development " (Chen Libin, " Hebei smelting
Gold " .2011.03:5-12) it proposes to select the preferable stainless steel material of corrosion resistance, such as stainless steel 304, Stainless steel 316, make
For easy blunt metal, stainless steel will form one layer of passivating film in an atmosphere, inhibit corrosion, but in high Cl-The ocean of content is big
Under compression ring border, Cl-Passivating film weakness can be destroyed, spot corrosion is caused, and gradually forms helcoid surface breakdown.Especially China
The South Sea have high temperature throughout the year, high humidity, high salt fog, strong solar radiation extreme environment feature, be not easy under some general environments
The metal component corroded can show more obvious corrosion phenomenon, if stainless steel 304, Stainless steel 316 are in South Sea sea area
There is red rust etc. in 1 year rear surface of exposure.
In order to improve service life and aesthetics of the warship ship fastener under exceedingly odious marine environment, it is necessary to propose
A kind of effective and simple and fast corrosion protection method.
Summary of the invention
The object of the present invention is to provide a kind of Fast Installation formula corrosion protection methods of warship ship fastener, solve extreme dislike
The corrosion protection problem of warship ship fastener under bad marine environment.
In order to achieve the above objectives, the invention proposes a kind of Fast Installation formula corrosion protection method of warship ship fastener,
Corrosion protective layers mainly include rubber nut cap, sealant and paint.Wherein, sealant is covered on the fastener being exposed in air
Surface is as first layer insulation blocking, and serum cap cap is used as second layer insulation blocking outside sealant, finally in serum cap
Cap outer surface coating paint.Specifically includes the following steps:
S1: the size and specification of the open-air atmosphere warship ship fastener according to required protection prepare dimension in advance
Rubber nut cap；
S2: it to needing fastener to be protected and installation part surface to pre-process, is cleaned and is fastened using grease cleaning agent
The surface of part, installation part surface and rubber nut cap, naturally dry；
S3: inserting sealant in rubber nut cap, and rubber nut cap is buckled on fastener, and the root of rubber nut cap sufficiently connects
It touches installation part surface Shi Yingyou sealant to overflow, the sealant overflowed around erasing in time；
S4: paint, sealant spontaneous curing are coated in the outer surface of rubber nut cap, paint is done certainly.
Further, the rubber nut cap is ethylene propylene diene rubber nut cap, and Shao's A hardness is between 65~80.
Further, the wall thickness of the rubber nut cap is used tightly in 1.5mm~5mm, outer diameter than the naval vessel protected
Big 5mm~the 15mm of nut outer diameter of firmware.
Further, the sealant is one pack system normal-temperature solidification polyurethane sealant.
Further, if rubber nut cap thinner thickness can be assisted by rubber nut cap since size limits in the S3
Rubber nut cap is buckled in warship ship fastener by installation tool.
Further, the paint is F-C paint.
The invention has the advantages that avoiding naval vessel fastening by the way that warship ship fastener to be isolated with external environment
Salt air corrosion occurs for part, to improve the service life of warship ship fastener, is also beneficial to prevent warship ship fastener and installation
Galvanic corrosion occurs between part.Present method solves the anti-problem of corrosion of warship ship fastener under exceedingly odious marine environment, behaviour
Make that simple and fast, protection is reliable, while ensure that the aesthetics of product, can be not only used for warship ship fastener before product export just
Begin to protect, it can also be used to which ship's fitting is difficult to the secondary protection for the warship ship fastener replaced during being on active service.
Detailed description of the invention
Fig. 1 is application appearance figure of the invention.
Fig. 2 is application diagrammatic cross-section of the invention.
Fig. 3 be implementation process of the present invention in can by rubber nut cap auxiliary mounting tool structural schematic diagram.
Major Symbol illustrates in figure:
1, in ethylene propylene diene rubber nut cap；2, one pack system normal-temperature solidification polyurethane sealant；3, F-C paint；4, installation part；
5, fastener；6, rubber nut cap auxiliary mounting tool.
Specific embodiment
It elaborates with reference to the accompanying drawing to the present invention.
As shown in Figure 1 to Figure 3, the present invention uses following operating procedure:
S1: the size and specification of the warship ship fastener 5 according to required protection prepare the EPDM of dimension in advance
Rubber nut cap 1, for the wall thickness of rubber nut cap in 1.5mm~3mm, outer diameter is bigger than the nut outer diameter of protected warship ship fastener 5
5mm~8mm, Shao's A hardness of rubber nut cap are 70~75.
1 ageing-resistant performance of ethylene propylene diene rubber nut cap is excellent, and lid can mounted in one pack system normal-temperature solidification polyurethane sealant outer 2
Prevent 2 accelerated ageing under strong solar radiation of one pack system normal-temperature solidification polyurethane sealant, and easy to cut, dimension easy to disassemble
Shield.The wall thickness and outer diameter of ethylene propylene diene rubber nut cap 1 should not it is too small also should not be too big, if ethylene propylene diene rubber lid
The wall thickness of cap 1 is smaller, has not only been unfavorable for the installation of ethylene propylene diene rubber nut cap 1, but also cannot preferably protect one pack system normal temperature cure
The wall thickness of polyurethane sealant 2, ethylene propylene diene rubber nut cap 1 is excessive, and production cost can also increase therewith；If EPDM
The outer diameter of rubber nut cap 1 is too small, and it is very few to will cause the one pack system normal-temperature solidification polyurethane sealant 2 that it can be filled, difficult
Warship ship fastener 5 is protected with effectively permanent, if outer diameter is excessive, will cause the poly- ammonia of one pack system normal temperature cure
The dosage of ester sealant 2 increases, and production cost is consequently increased, and is also unfavorable for the aesthetics of product.
S2: warship ship fastener 5,4 table of installation part around warship ship fastener 5 are cleaned with grease cleaning agent G204-S
Face, 1 surfaces externally and internally of ethylene propylene diene rubber nut cap, naturally dry.
S3: inserting the one pack system normal-temperature solidification polyurethane sealant 2 of 3/4 volume in ethylene propylene diene rubber nut cap 1, utilizes
Ethylene propylene diene rubber nut cap 1 is buckled on fastener by rubber nut cap auxiliary mounting tool 6, assists installing with hand flicking rubber nut cap
6 side of tool reserves the ethylene propylene diene rubber nut cap 1 of indentation, there to remove rubber nut cap auxiliary mounting tool 6, and wipes in time
The one pack system normal-temperature solidification polyurethane sealant 2 that surrounding is overflowed.
One pack system normal-temperature solidification polyurethane sealant 2 can be chemically reacted with the moisture in air, be formed forever after solidification
Long elastomer.The elastomer can be Nian Jie with metal-based layer good, to warship ship fastener 5 is isolated with outside air, and easily
In cutting, maintenance easy to disassemble.On the other hand, isolation steam is also beneficial to prevent from sending out between warship ship fastener 5 and installation part 4
Raw dissimilar metal galvanic corrosion, especially on-board equipment relatively mostly use al member, and galvanic corrosion, which occurs, can seriously affect equipment dimension
Dress precision is returned when repairing.
If 1 thickness of ethylene propylene diene rubber nut cap is too thin, hand operation easily leads to the sealing of one pack system normal-temperature solidification polyurethane
Glue 2 is extruded into interior void, is unfavorable for one pack system normal-temperature solidification polyurethane sealant 2 and ethylene propylene diene rubber nut cap 1 or warship
Ship fastener 5 comes into full contact with, and can reach and is reduced in work progress to EPDM by rubber nut cap auxiliary mounting tool 6
The effect of 1 lateral pressure of rubber nut cap, one end of the rubber nut cap auxiliary mounting tool 5 are groove, the size and ternary of groove
The Outside Dimensions of EP rubbers nut cap 1 are consistent.
S4: 1 surface of ethylene propylene diene rubber nut cap coating and around 4 solid colour of installation part F-C paint 3, then to close
2 spontaneous curing of sealing, F-C paint 3 are certainly dry.F-C paint 3 has excellent weather resistance, applies in 1 face of ethylene propylene diene rubber nut cap table
The F-C paint 3 with surrounding installation part solid colour is covered, can be coated on the spot, guarantees aesthetics.
Claims (6)
1. the Fast Installation formula corrosion protection method of warship ship fastener, it is characterised in that: corrosion protective layers are sealed by first layer
Paint (3) composition of glue (2), second layer rubber nut cap (1) and coating on the second layer, comprising the following steps:
S1: the size and specification of the warship ship fastener (5) according to required protection prepare the rubber nut cap of dimension in advance
(1)；
S2: to needing warship ship fastener (5) to be protected and installation part (4) surface to pre-process, grease cleaning agent is utilized
Clean the surface of warship ship fastener (5), installation part (4) surface and rubber nut cap (1), naturally dry；
S3: sealant (2) are inserted in rubber nut cap (1), rubber nut cap (1) are buckled on fastener (5), rubber nut cap (1)
Root come into full contact with installation part (4) surface Shi Yingyou sealant spilling, in time erasing around overflow sealant；
S4: in the outer surface of rubber nut cap (1) coating paint (3), glue (2) spontaneous curing to be sealed, paint (3) is certainly dry.
2. the Fast Installation formula corrosion protection method of warship ship fastener according to claim 1, it is characterised in that: described
Rubber nut cap (1) is ethylene propylene diene rubber nut cap, and Shao's A hardness is between 65~80.
3. according to claim 1 or the Fast Installation formula corrosion protection method of warship ship fastener as claimed in claim 2, special
Sign is: the wall thickness of the rubber nut cap (1) is in 1.5mm~5mm, spiral shell of the outer diameter than the warship ship fastener (5) protected
Female big 5mm~15mm.
4. the Fast Installation formula corrosion protection method of warship ship fastener according to claim 3, it is characterised in that: described
Sealant (2) is one pack system normal-temperature solidification polyurethane sealant.
5. the Fast Installation formula corrosion protection method of warship ship fastener according to claim 4, it is characterised in that: described
In S3 if since size limits, rubber nut cap (1) thinner thickness can be by rubber nut cap auxiliary mounting tool by rubber nut cap
(1) it is buckled on fastener (5).
6. the Fast Installation formula corrosion protection method of warship ship fastener according to claim 5, it is characterised in that: described
Painting (3) is F-C paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657748.1A CN110374977A (en) | 2019-07-20 | 2019-07-20 | The Fast Installation formula corrosion protection method of warship ship fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657748.1A CN110374977A (en) | 2019-07-20 | 2019-07-20 | The Fast Installation formula corrosion protection method of warship ship fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110374977A true CN110374977A (en) | 2019-10-25 |
Family
ID=68254373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910657748.1A Pending CN110374977A (en) | 2019-07-20 | 2019-07-20 | The Fast Installation formula corrosion protection method of warship ship fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110374977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234555A (en) * | 2022-06-23 | 2022-10-25 | 上海宇航系统工程研究所 | Preparation method for bonding cork on surface of large-diameter riveting cabin |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383619A (en) * | 2011-10-16 | 2012-03-21 | 江苏中矿大正表面工程技术有限公司 | Method for preventing corrosion of concrete members in tidal range zone and splash zone of ocean |
| CN202911942U (en) * | 2012-11-13 | 2013-05-01 | 中国舰船研究设计中心 | Corrosion-prevention coating structure for high temperature steam exhaust pipeline flange of ship |
| WO2013065311A1 (en) * | 2011-11-04 | 2013-05-10 | 三菱航空機株式会社 | Lightning-proof fastener and cap for lightning-proof fastener |
| CN104321544A (en) * | 2012-04-11 | 2015-01-28 | Prc-迪索托国际公司 | Nut plate seal caps |
| CN105143045A (en) * | 2013-04-15 | 2015-12-09 | 3M创新有限公司 | Translucent seal cap |
| CN108661994A (en) * | 2018-05-08 | 2018-10-16 | 中国人民解放军海军工程大学 | A kind of the glue spiral shell Hybrid connections structure and installation method of cathodic protection |
| CN109335016A (en) * | 2018-12-04 | 2019-02-15 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of fastener package sealing tool and its application method |
| US20190195267A1 (en) * | 2017-12-22 | 2019-06-27 | The Boeing Company | Systems and methods for making and using a fitted cap for applying a shaped sealant shroud to a portion of a fastener |
-
2019
- 2019-07-20 CN CN201910657748.1A patent/CN110374977A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383619A (en) * | 2011-10-16 | 2012-03-21 | 江苏中矿大正表面工程技术有限公司 | Method for preventing corrosion of concrete members in tidal range zone and splash zone of ocean |
| WO2013065311A1 (en) * | 2011-11-04 | 2013-05-10 | 三菱航空機株式会社 | Lightning-proof fastener and cap for lightning-proof fastener |
| CN104321544A (en) * | 2012-04-11 | 2015-01-28 | Prc-迪索托国际公司 | Nut plate seal caps |
| CN202911942U (en) * | 2012-11-13 | 2013-05-01 | 中国舰船研究设计中心 | Corrosion-prevention coating structure for high temperature steam exhaust pipeline flange of ship |
| CN105143045A (en) * | 2013-04-15 | 2015-12-09 | 3M创新有限公司 | Translucent seal cap |
| US20190195267A1 (en) * | 2017-12-22 | 2019-06-27 | The Boeing Company | Systems and methods for making and using a fitted cap for applying a shaped sealant shroud to a portion of a fastener |
| CN108661994A (en) * | 2018-05-08 | 2018-10-16 | 中国人民解放军海军工程大学 | A kind of the glue spiral shell Hybrid connections structure and installation method of cathodic protection |
| CN109335016A (en) * | 2018-12-04 | 2019-02-15 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of fastener package sealing tool and its application method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234555A (en) * | 2022-06-23 | 2022-10-25 | 上海宇航系统工程研究所 | Preparation method for bonding cork on surface of large-diameter riveting cabin |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20191025 |