CN105799162A - Application method of protective film-shaped primer of aluminum alloy cementing surface - Google Patents
Application method of protective film-shaped primer of aluminum alloy cementing surface Download PDFInfo
- Publication number
- CN105799162A CN105799162A CN201610235301.1A CN201610235301A CN105799162A CN 105799162 A CN105799162 A CN 105799162A CN 201610235301 A CN201610235301 A CN 201610235301A CN 105799162 A CN105799162 A CN 105799162A
- Authority
- CN
- China
- Prior art keywords
- primer
- membranaceous
- aluminium alloy
- product
- paving
- 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
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/026—Chemical pre-treatments
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
Abstract
The invention discloses an application method of a protective film-shaped primer of an aluminum alloy cementing surface. Traditional primer spraying is changed to protective film-shaped primer spreading, so that an aluminum alloy cementing workpiece can be operated and stopped under a general room-temperature environment (non-control pollution area), and the defect of influence on operation caused by sealing of an aluminum alloy part, after primer spraying, in a clean room (control pollution area) with temperature and humidity requirements is overcome.
Description
Technical field
The invention belongs to aeronautical material and glued joint manufacturing technology field, protect the using method of membranaceous primer particularly to a kind of aluminium alloy glue surfaces.
Background technology
Aviation aluminium alloy element is each other or when carrying out structural adhesive bonding with other material, Al-alloy parts surface should carry out anodization.Specify by Aviation Industry standard " control of HB5339-2011 metal structure bonding quality ": 24 hours planted agent's paving glued membranes after Al-alloy parts surface anodization.For the Al-alloy parts anodized surface of paving glued membrane should can not first spray primer in 24 hours, the protection of neutral packing paper applied after drying by primer, is placed in broom closet (control contaminated area) and seals up for safekeeping, and planted agent's paving glued membrane of 7 days assembles and solidifies.This is operationally feasible for having only to once glued joint the Al-alloy parts of operation.But for some structure and complex process, in the fabrication process will respectively after the anodization of same part Al-alloy parts first time splicing face 1 and anodization after on second time splicing face 2 point secondary carry out glueing joint the aluminium alloy second bonding part of operation (as shown in Figure 1,), feasibility is little, it is achieved difficulty.Its reason: one is that the aluminium alloy second bonding part manufacturing cycle is long, and the splicing time of secondary to be separated by a couple of days, it is impossible to paving second time glued membrane in 24 hours；Two is as first sprayed primer, and aluminium alloy second bonding part spraying primer is necessary for, with the protection of neutral packing paper, being placed in broom closet (control contaminated area) and sealing up for safekeeping after drying, and this lacks operability in the fabrication process.Because aluminium alloy second bonding part also has other multiple working procedure to carry out in second bonding process, it is impossible to is placed in broom closet (control contaminated area) and seals up for safekeeping.The appearance of this difficult problem just creates a protection problem to aluminium alloy second bonding part anodized surface second time glue surfaces.
Summary of the invention
The present invention solves the protection problem of aluminium alloy second bonding part anodized surface second time glue surfaces, it is proposed to a kind of aluminium alloy glue surfaces protects the using method of membranaceous primer, extend the aluminium alloy second bonding part manufacture construction life-span, meet the requirement of manufacturing cycle.
For solving the problems referred to above, the present invention adopts the technical scheme that: a kind of aluminium alloy glue surfaces protects the using method of membranaceous primer, comprises the following steps:
(1) Al-alloy parts carries out anodization, dries 1h～1.5h after anodization at 55 DEG C～65 DEG C；
(2) Al-alloy parts after drying is temperature 22 DEG C～30 DEG C, and the paving broom closet of relative humidity 30%～65% places 1h～1.5h, so as to consistent with ambient temperature；
(3) before paving, protecting membranaceous primer temperature 22 DEG C～30 DEG C, the paving broom closet of relative humidity 30%～65% places 1h～1.5h, so as to consistent with ambient temperature；
(4) on Al-alloy parts second time splicing face, membranaceous primer is protected in paving 1 layer；
(5) paving protects the Al-alloy parts of membranaceous primer to glued joint patch mould location on shaping mould with composite material element at skeleton, adopts room temperature setting adhesives room temperature solidification by cement 24h to form product skeleton；
(6) on product design test jig, product skeleton overall dimensions is checked；
(7) aluminium alloy aluminium alloy, Al alloy composite structure second bonding part being carried out pre-assembled, adhesive bonding of composites face and upper and lower panel to product skeleton are gluedd joint face and are carried out repair, clean and dry；
(8) throwing off the insulation blocking paper of Al-alloy parts upper protective film shape primer, glued membrane is gluedd joint in paving thereon 1 layer, and on the composite material element splicing face of product skeleton, glued membrane is gluedd joint in paving 1 layer simultaneously, by product skeleton and upper and lower panel combination；
(9) product skeleton and upper and lower panel molectron are loaded product and glued joint in shaping mould, curing molding on hot press, curing process parameter: first to contact pressure pressure testing, being warming up to 70 DEG C～80 DEG C with 1 DEG C/min～3 DEG C/min, repressurization is as the criterion to mold closing；Then it is warming up to 130 DEG C～135 DEG C with 1 DEG C/min～3 DEG C/min, heat-insulation pressure keeping 3h；Pressurize is cooled to less than 40 DEG C release moldings, the remaining glue of cleaning, obtains product；
(10) on product design test jig, check product design size, obtain meeting the product of technical specification.
Preferably, the splicing glued membrane that the membranaceous primer of described protection is used with splicing is same material.
Preferably, insulation blocking paper is posted on the membranaceous primer surface of described protection, in case polluting the membranaceous primer of described protection in process of production.Described insulation blocking paper has suitable adhesion, difficult drop-off with protecting membranaceous primer, and easily can throw off when second time glueds joint paving splicing glued membrane.
Preferably, the thickness of described insulation blocking paper is 0.08mm～0.1mm.
Preferably, the thickness of the membranaceous primer of described protection is 0.04mm～0.08mm.One is protected membranaceous primer too thin to manufacture difficulty；Two is protect membranaceous primer thickness as exceeded 0.08mm; add the thick insulation blocking paper of last layer 0.08mm～0.1mm; both are added and are possible to exceed 0.18mm; this will have influence on whole aluminium alloy second bonding part skeleton and glued joint patch mould location on shaping mould at skeleton; cause whole aluminium alloy second bonding part skeleton profile partial twist; product design dimension overproof, affects workpiece accuracy.
Preferably, the membranaceous primer of described protection has viscosity with Al-alloy parts anodized surface at normal temperatures, can under normal temperature condition, and by its direct paving glue surfaces after anodization, compared with glueing joint glued membrane, viscosity is higher, is absent from the phenomenon coming off or warping.
Preferably, aluminium alloy second bonding part anodized surface paving can stop under common room temperature environment or work 7 days after protecting membranaceous primer; meet the manufacturing cycle requirement of aluminium alloy second bonding part; compared with glueing joint glued membrane, viscosity is higher, is absent from the phenomenon coming off or warping.
Preferably, the anode in described step (1) turns to sulfur acid anodizing, phosphoric acid, chromic acid anodizing or nitration mixture anodization.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of aluminium alloy glue surfaces provided by the invention protects the using method of membranaceous primer; changed into paving by traditional spraying primer and protect membranaceous primer; it is that primer is applied ointment or plaster the major progress of technology; aluminium alloy second bonding part anodized surface second time can be solved and glued joint the protection problem of front surface, extend the aluminium alloy second bonding part manufacture construction life-span.Meanwhile, a kind of aluminium alloy glue surfaces provided by the invention protects membranaceous primer to be also applied for the protection of bonded part anodized surface of aluminium alloy.
After Al-alloy parts anodization, glue surfaces protection is changed into paving by traditional spraying primer and protects membranaceous primer; aluminium alloy glued joint workpiece can (non-controlling contaminated area) operation and stopping under common room temperature environment, must be placed in sealing up for safekeeping in the broom closet (control contaminated area) that humiture requires after overcoming Al-alloy parts spraying primer and affect the defect of operation.
The use protecting membranaceous primer solves spraying primer and uses the drawback of organic solvent, improves work situation, is conducive to safety in production.
Accompanying drawing illustrates:
Fig. 1 is that Al-alloy parts glueds joint face schematic diagram first, second time.
Fig. 2 is that skeleton glueds joint location schematic diagram on shaping mould at skeleton.
Drawing reference numeral: 1, after anodization, first time glueds joint face；2, after anodization, second time glueds joint face；3, skeleton glueds joint shaping mould；4, locating clamp plate；5, aluminium alloy second bonding part；6, locating surface is gluedd joint；7, girder patch die face；8, girder.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described further:
Certain wing is aluminium alloy carbon fiber composite structure second bonding part, and Al-alloy parts successively need to carry out second bonding, and first Al-alloy parts carry out nitration mixture anodization, then on second time splicing face paving layer protecting film shape primer；Then adopt J-81 room temperature setting adhesives that at skeleton, it is gluedd joint room temperature solidification by cement on shaping mould with composite girder, wall etc. and form wing skeleton；Adopt J-47A to glued joint glued membrane again and upper and lower to wing skeleton and composite eyelid covering splicing molding is obtained aluminium alloy carbon fibre composite whole wing.Moulding process step is as follows:
(1) Al-alloy parts carries out nitration mixture anodization, dries 1h～1.5h after nitration mixture anodization at 55 DEG C～65 DEG C；
(2) Al-alloy parts after drying is temperature 22 DEG C～30 DEG C, and the paving broom closet of relative humidity 30%～65% places 1h～1.5h, so as to consistent with ambient temperature；
(3) before paving, protecting membranaceous primer temperature 22 DEG C～30 DEG C, the paving broom closet of relative humidity 30%～65% places 1h～1.5h, so as to consistent with ambient temperature；
(4) glued joint the upper 1 layer of 0.06mm thickness J-47A of paving in face (J-47A glueds joint face) in Al-alloy parts second time and protect membranaceous primer；
(5) paving J-47A protects the Al-alloy parts of membranaceous primer to glued joint patch mould location on shaping mould with the composite material element such as girder, wall at skeleton, adopts J-81 room temperature setting adhesives room temperature solidification by cement 24h to form wing skeleton；
(6) on wing outline inspection frame, wing skeleton overall dimensions is checked；
(7) aluminium alloy carbon fiber composite structure second bonding part being carried out pre-assembled, adhesive bonding of composites face and upper and lower eyelid covering to wing skeleton are gluedd joint face and are carried out repair, clean and dry；
(8) throw off 0.06mm thickness J-47A on Al-alloy parts and protect the insulation blocking paper of membranaceous primer; 1 layer of 0.35mm thickness J-47A of paving thereon glueds joint glued membrane; on the composite material element splicing faces such as the girder of wing skeleton, wall, 1 layer of 0.35mm thickness J-47A of paving glueds joint glued membrane simultaneously, by wing skeleton and the combination of upper and lower eyelid covering；
(9) wing skeleton and upper and lower eyelid covering molectron are loaded wing and glued joint curing molding on the hot press of shaping mould inherence；Curing process parameter: first to contact pressure pressure testing, being warming up to 70 DEG C～80 DEG C with 1 DEG C/min～3 DEG C/min, repressurization is as the criterion to matched moulds.Then it is warming up to 130 DEG C～135 DEG C with 1 DEG C/min～3 DEG C/min, heat-insulation pressure keeping 3h.Pressurize is cooled to less than 40 DEG C release moldings, the remaining glue of cleaning, obtains whole wing.
(10) on wing outline inspection frame, check wing overall dimensions, obtain meeting the whole wing of technical specification.
Further, the splicing glued membrane that the membranaceous primer of described protection is used with splicing is same material.
Further, insulation blocking paper is posted on the membranaceous primer surface of described protection, in case polluting the membranaceous primer of described protection in process of production.Described insulation blocking paper has suitable adhesion, difficult drop-off with protecting membranaceous primer, and easily can throw off when second time glueds joint paving splicing glued membrane.
Further, the thickness of described insulation blocking paper is 0.08mm～0.1mm.
Further, the thickness of the membranaceous primer of described protection is 0.04mm～0.08mm.One is protected membranaceous primer too thin to manufacture difficulty；Two is protect membranaceous primer thickness as exceeded 0.08mm; add the thick insulation blocking paper of last layer 0.08mm～0.1mm; both are added and are possible to exceed 0.18mm; this will have influence on whole aluminium alloy second bonding part skeleton and glued joint patch mould location on shaping mould at skeleton; cause whole aluminium alloy second bonding part skeleton profile partial twist; product design dimension overproof, affects workpiece accuracy.
Further, the membranaceous primer of described protection has viscosity with Al-alloy parts anodized surface at normal temperatures, can under normal temperature condition, and by its direct paving glue surfaces after anodization, compared with glueing joint glued membrane, viscosity is higher, is absent from the phenomenon coming off or warping.
Further, aluminium alloy second bonding part anodized surface paving can stop under common room temperature environment or work 7 days after protecting membranaceous primer; meet the manufacturing cycle requirement of aluminium alloy second bonding part; compared with glueing joint glued membrane, viscosity is higher, is absent from the phenomenon coming off or warping.
Further, the membranaceous primer of described protection is equally applicable to the protection of bonded part anodized surface of aluminium alloy, adopts and protects membranaceous primer to replace traditional spraying primer, and technique is convenient, quick.
Further, the membranaceous primer of described protection is different from existing splicing glued membrane.The splicing glued membrane that one is existing is little with aluminium alloy anodization surface viscosity at normal temperatures, and paving is not enough on aluminium alloy anodization surface keep the regular hour to protect anodized surface；The thickness glueing joint glued membrane that two is existing is blocked up as protection primer, and the existing thickness glueing joint glued membrane, at more than 0.15mm, adds last layer insulation blocking paper 0.08mm～0.1mm thick, and both combined thicknesses are likely at more than 0.25mm.About 5 two glue surfaces of aluminium alloy second bonding part need protection; so upper and lower two layers of splicing glued membrane add up just more than 0.5mm thickness, and needs anodized surface to be protected be exactly aluminium alloy second bonding part 5 and glued joint the splicing locating surface 6 (referring to accompanying drawing 2) on shaping mould 3 at skeleton.When skeleton glueds joint on shaping mould 3 locating clamp plate 4 when closing up, as long as the dimensional discrepancy between its inner surface and die face equals to or more than 0.4mm, locating clamp plate 4 just cannot close up and puts in place, and the composite material elements such as girder 8, wall can not be close in girder patch die face 7, the whole skeleton of aluminium alloy second bonding part 5 cannot position on skeleton splicing shaping mould 3, cause aluminium alloy second bonding part 5 skeleton profile partial twist, can not get overall dimensions and meet the product of technical specification.
Listed above is only specific embodiments of the invention.It is clear that the invention is not restricted to above example, it is also possible to there are many similar reshapings.All deformation that those of ordinary skill in the art can directly derive from present disclosure or associate, are all considered as invention which is intended to be protected.
Claims (6)
1. the using method of the aluminium alloy glue surfaces membranaceous primer of protection, it is characterised in that: comprise the following steps:
(1) Al-alloy parts carries out anodization, dries 1h～1.5h after anodization at 55 DEG C～65 DEG C；
(2) Al-alloy parts after drying is temperature 22 DEG C～30 DEG C, and the paving broom closet of relative humidity 30%～65% places 1h～1.5h, so as to consistent with ambient temperature；
(3) before paving, protecting membranaceous primer temperature 22 DEG C～30 DEG C, the paving broom closet of relative humidity 30%～65% places 1h～1.5h, so as to consistent with ambient temperature；
(4) on Al-alloy parts second time splicing face, membranaceous primer is protected in paving 1 layer；
(5) paving protects the Al-alloy parts of membranaceous primer to glued joint patch mould location on shaping mould with composite material element at skeleton, adopts room temperature setting adhesives room temperature solidification by cement 24h to form product skeleton；
(6) on product design test jig, product skeleton overall dimensions is checked；
(7) aluminium alloy aluminium alloy or Al alloy composite structure second bonding part being carried out pre-assembled, adhesive bonding of composites face and upper and lower panel to product skeleton are gluedd joint face and are carried out repair, clean and dry；
(8) throwing off the insulation blocking paper of Al-alloy parts upper protective film shape primer, glued membrane is gluedd joint in paving thereon 1 layer, and on the composite material element splicing face of product skeleton, glued membrane is gluedd joint in paving 1 layer simultaneously, by product skeleton and upper and lower panel combination；
(9) product skeleton and upper and lower panel molectron are loaded product and glued joint in shaping mould, curing molding on hot press, curing process parameter: first to contact pressure pressure testing, being warming up to 70 DEG C～80 DEG C with 1 DEG C/min～3 DEG C/min, repressurization is as the criterion to mold closing；Then it is warming up to 130 DEG C～135 DEG C with 1 DEG C/min～3 DEG C/min, heat-insulation pressure keeping 3h；Pressurize is cooled to less than 40 DEG C release moldings, the remaining glue of cleaning, obtains product；
(10) on product design test jig, check product design size, obtain meeting the product of technical specification.
2. a kind of aluminium alloy glue surfaces according to claim 1 protects the using method of membranaceous primer, it is characterised in that: the thickness of the membranaceous primer of described protection is 0.04mm～0.08mm.
3. a kind of aluminium alloy glue surfaces according to claim 1 protects the using method of membranaceous primer, it is characterised in that: the membranaceous primer of described protection and the splicing glued membrane used by glueing joint are same material.
4. a kind of aluminium alloy glue surfaces according to claim 1 protects the using method of membranaceous primer, it is characterised in that: described insulation blocking thickness of paper degree is 0.08mm～0.1mm.
5. a kind of aluminium alloy glue surfaces according to claim 1 protects the using method of membranaceous primer, it is characterised in that: the membranaceous primer of described protection has viscosity with Al-alloy parts anodized surface at normal temperatures.
6. a kind of aluminium alloy glue surfaces according to claim 1 protects the using method of membranaceous primer, it is characterised in that: the anode in described step (1) turns to sulfur acid anodizing, phosphoric acid, chromic acid anodizing or nitration mixture anodization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235301.1A CN105799162B (en) | 2016-04-18 | 2016-04-18 | A kind of aluminium alloy glue surfaces protect the application method of membranaceous primer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235301.1A CN105799162B (en) | 2016-04-18 | 2016-04-18 | A kind of aluminium alloy glue surfaces protect the application method of membranaceous primer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105799162A true CN105799162A (en) | 2016-07-27 |
| CN105799162B CN105799162B (en) | 2017-09-08 |
Family
ID=56461023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610235301.1A Active CN105799162B (en) | 2016-04-18 | 2016-04-18 | A kind of aluminium alloy glue surfaces protect the application method of membranaceous primer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105799162B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825607A (en) * | 2018-06-13 | 2018-11-16 | 江西昌河航空工业有限公司 | A kind of metal bonding method |
| CN110901102A (en) * | 2019-11-14 | 2020-03-24 | 昌河飞机工业（集团）有限责任公司 | Connecting method for composite material rotor blade trailing edge adjusting sheet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192527A (en) * | 2013-04-24 | 2013-07-10 | 哈尔滨飞机工业集团有限责任公司 | Secondary bonding forming method of structural part with curvature |
| CN103192528A (en) * | 2013-04-24 | 2013-07-10 | 哈尔滨飞机工业集团有限责任公司 | Method for co-curing and co-moulding titanium alloy and composite material part |
-
2016
- 2016-04-18 CN CN201610235301.1A patent/CN105799162B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192527A (en) * | 2013-04-24 | 2013-07-10 | 哈尔滨飞机工业集团有限责任公司 | Secondary bonding forming method of structural part with curvature |
| CN103192528A (en) * | 2013-04-24 | 2013-07-10 | 哈尔滨飞机工业集团有限责任公司 | Method for co-curing and co-moulding titanium alloy and composite material part |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825607A (en) * | 2018-06-13 | 2018-11-16 | 江西昌河航空工业有限公司 | A kind of metal bonding method |
| CN110901102A (en) * | 2019-11-14 | 2020-03-24 | 昌河飞机工业（集团）有限责任公司 | Connecting method for composite material rotor blade trailing edge adjusting sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105799162B (en) | 2017-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103921450B (en) | A kind of manufacture method of blended wing-body honeycomb sandwich composite eyelid covering | |
| CN106608056B (en) | A kind of phenolic aldehyde panel honeycomb sandwich construction part forming method | |
| CN107328316B (en) | Preparation method of aerospace projectile body heat-proof structure | |
| CN101391488B (en) | Curing formation method for non-flat plate composite product and shaping mould | |
| CN104029397B (en) | The preparation facilities of a kind of technique for aircraft composite fuselage wallboard and preparation method | |
| ES2740997T3 (en) | Method of realization of a composite interposition structure | |
| US4556529A (en) | Method for bonding molded components sheeting or shaped members | |
| US20110297315A1 (en) | Method for producing resin-based composite | |
| CN106273547A (en) | One has cabin cover and Ω stringer deep camber unmanned plane wallboard manufacturing process | |
| CN105856592A (en) | Formation method of multi-beam multi-rib composite wallboard | |
| CN110067797B (en) | Method for adhering airborne thin-wall metal piece and non-metal piece | |
| CN112537047B (en) | Forming and assembling method for composite material reflector | |
| CN105799162A (en) | Application method of protective film-shaped primer of aluminum alloy cementing surface | |
| CN101750239B (en) | Method for processing composite material test plate | |
| CN104015377B (en) | Large damping high rigidity composite material by multilayer sandwich precision instrument plate manufacture craft | |
| CN110554094A (en) | Artificial simulation defect and preparation method thereof | |
| CN109747257A (en) | Ceramic coating composite plate and preparation method thereof | |
| CN106564198A (en) | Method for bonding foam layer and aluminum alloy skin | |
| US20060196404A1 (en) | Laminated boat hull and method of manufacturing same | |
| US20210094240A1 (en) | Method and apparatus for fabrication of composite tooling | |
| US20130299073A1 (en) | Contour caul with expansion region | |
| CN113942254B (en) | Accurate control method for molded surface of honeycomb sandwich composite material part encapsulation area | |
| CN205467733U (en) | Compound heat shroud of flexible light of phase change energy storage | |
| CN214063214U (en) | Blade surface protection structure of wind generating set | |
| CN105835495A (en) | Phase-change energy-storage flexible lightweight composite heat shroud and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |