CN102825801B - Manufacturing method of blade girder - Google Patents
Manufacturing method of blade girder Download PDFInfo
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- CN102825801B CN102825801B CN201210296059.0A CN201210296059A CN102825801B CN 102825801 B CN102825801 B CN 102825801B CN 201210296059 A CN201210296059 A CN 201210296059A CN 102825801 B CN102825801 B CN 102825801B
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- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 48
- 238000005470 impregnation Methods 0.000 claims abstract description 26
- 238000002360 preparation method Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 abstract description 41
- 239000004744 fabric Substances 0.000 abstract description 31
- 230000005484 gravity Effects 0.000 abstract description 15
- 239000003365 glass fiber Substances 0.000 abstract description 6
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 25
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
The embodiment of the invention provides a manufacturing method of a blade main beam, relates to the technical field of manufacturing of blades of wind driven generators, and solves the problem that the existing manufacturing method can cause the phenomena of incomplete gum dipping of glass fiber fabrics or dry fibers. In the embodiment of the invention, the treatment of increasing the height difference between the front edge side and the rear edge side of the main beam mold is performed between the tightness checking stage and the impregnation stage, so that gravity and vacuum pressure are not separated but can act with each other, the flowing direction of resin in fibers is single, the flowing speed of the resin is controlled more easily, the flowing of the resin in fiber bundles is smaller than or equal to that in the fiber bundles, and the phenomenon that the impregnation of glass fiber fabrics is incomplete or the fibers are dried can be avoided.
Description
Technical field
The present invention relates to technical field of wind turbine generator blade manufacture, particularly relate to the preparation method of blade girder.
Background technology
Blade is one of important composition parts of wind-driven generator, is generally made up of composite, structure is divided into root, shell, keel three parts.Fig. 1 is vane airfoil profile profile.As the critical component of blade enclosure, blade girder 11 needs most of load of bearing blade, therefore higher to the requirement of its strength character.
At present, usually adopt pre-formed method to manufacture blade girder, and then using shaping blade girder as installation of embedded parts in blade shell.The method adopts vacuum assisted resin transfer molding technique (VARTM), and its cardinal principle is: realize the infiltration of resin to glass fabric while of utilizing negative pressure of vacuum to discharge gas in glass fabric.
Fig. 2 shows the equipment that VARTM technique uses.Wherein, girder mould 21 is installed on support 22, and the front edge side 21a of this girder mould 21 is provided with the pitch tube 25 for connecting resin barrel 24, and trailing edge side 21b is provided with the vacuum tube 23 for connecting vavuum pump.
Use the method for this equipment making blade girder to comprise: material preparation phase, inspection sealing stage, impregnation stage and cure and demold stage, wherein each stage specifically describes as follows:
Material preparation phase: arrange girder mould 21 and be in level, makes the material being placed on girder mould 21 can not drop from girder mould 21; To the upper surface coating release agent of this girder mould 21, and the glass fabric 27 cut out is laid in girder mould 21; Lay mold release film and flow-guiding screen 26 afterwards; Finally discharge pitch tube 25 and vacuum tube 23, and with vacuum bag 28 by auxiliary material, pitch tube 25 and vacuum tube 23 integral sealings such as various main material, mold release film and flow-guiding screen 26 such as above-mentioned glass fabrics 27 on girder mould 21.
Check the sealing stage: after above-mentioned sealing, open the vavuum pump be connected with vacuum tube 23, air is extracted out from glass fabric 27, and checks the overall tightness of various main material, pitch tube 25 and the vacuum tube 23 such as girder mould 21, glass fabric 27.
The impregnation stage: confirm above-mentioned overall tightness good after, open the valve 25A of pitch tube 25, make resin enter girder mould 21 from resin barrel 24, with sized glass fibres fabric 27.
In the cure and demold stage: after the infiltration of glass fabric 27 completes, the heating system of opening girder mould 21 carries out the solidification of resin.
When the process described above is used, girder mould 21 is configured to above-mentioned level, thus the resin with mobility can under the effect of flow-guiding screen 26, dipped with fast speed from glass fabric 27 superficial layer, and to infiltrate the intermediate layer of multilayer glass fiber fabric 27 compared with jogging speed.
The flowing of resin in glass fabric 27 is divided between fibre bundle flows in flowing and fibre bundle.When under the level at girder mould 21 during impregnation, resin Action of Gravity Field then acts on the horizontal direction from pitch tube to vacuum tube in the gravity direction vacuum pressure with horizontal plane, therefore gravity and vacuum pressure are discrete, the above-mentioned discrete resin that makes is subject to multidirectional active force and flows to multiple directions, and because fiber is in the permeability difference of all directions, cause resin different in the flowing velocity of all directions, make flowing between the fibre bundle of part direction be less than flowing in fibre bundle, between the fibre bundle in part direction, flowing is greater than flowing in fibre bundle.And when flowing velocity to be greater than in fibre bundle flowing when between fibre bundle, the not thorough or dry fiber phenomenon of impregnation can be produced, and the defect of blade girder insufficient strength that this kind of situation will cause.
Therefore, when level is in for blade girder mould 21, may cause occurring the not thorough or dry fiber phenomenon of impregnation and the blade girder Stress and strength occurred cannot reach manufacture requirements because of glass fabric, thus blade girder cannot be used, can only scrap.
Summary of the invention
Embodiments of the invention provide a kind of preparation method of blade girder, solve existing blade girder preparation method and easily occur the not thorough or dry fiber of glass fabric impregnation thus cause blade stress and intensity cannot reach the problem of manufacture requirements.
For achieving the above object, embodiments of the invention are adopted with the following method:
A kind of preparation method of blade girder, comprise: material preparation phase, inspection sealing stage, impregnation stage and cure and demold stage, wherein, between inspection sealing stage and impregnation stage, also comprise: increase the difference in height between girder mould front edge side and trailing edge side.
Preferably, make pitch tube be positioned at the below of vacuum tube, to make in the described impregnation stage, resin to hoist flowing from lower.
Preferably, the difference in height between described girder mould front edge side and trailing edge side equals the distance between described front edge side and described trailing edge side.
Preferably, the bottom of the support supporting described girder mould is provided with hinge; The method of the difference in height between described increase girder mould front edge side and trailing edge side specifically comprises: make described girder mould along the direction towards described front edge side or rotate around described hinge along the direction towards described trailing edge side.
Preferably, be provided with telescoping mechanism on the bracket, described telescoping mechanism rotates around described hinge for driving described support.
Preferably, be provided with suspension centre on the bracket, described suspension centre hangs to drive described support to rotate around described hinge by outside haulage gear.
In the preparation method of the blade girder that the embodiment of the present invention provides, by between inspection sealing stage and impregnation stage, perform the process of the difference in height increased between girder mould front edge side and trailing edge side, make gravity and vacuum pressure no longer discrete but can act on each other, thus make resin flow direction in the fibre single, resin flows speed more easy to control like this, flow to make between fibre bundle flowing be less than or equal in fibre bundle, thus avoid the phenomenon occurring the not thorough or dry fiber of glass fabric impregnation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is existing vane airfoil profile profile;
Fig. 2 uses by existing VARTM technique the structural representation of equipment;
The schematic diagram that the preparation method middle girder mould of the blade girder that Fig. 3 a provides for the embodiment of the present invention is placed with level;
The preparation method middle girder mould front edge side of the blade girder that Fig. 3 b provides for the embodiment of the present invention and trailing edge side difference in height equal the schematic diagram of the spacing of front edge side and trailing edge side;
A kind of structural representation of the support of the support girder mould that Fig. 4 provides for the embodiment of the present invention;
The another kind of structural representation of the support of the support girder mould that Fig. 5 provides for the embodiment of the present invention;
The flow chart of the preparation method of the blade girder that Fig. 6 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preparation method of the blade girder that the embodiment of the present invention provides is described in detail.Obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments provide a kind of preparation method of blade girder, as shown in Fig. 3 a, Fig. 3 b and Fig. 6, comprise the steps.
101: material preparation phase; 102: check the sealing stage; 104: the impregnation stage and 105: the cure and demold stage, wherein, 102: check the sealing stage and 104: impregnation also comprises step 103 between the stage: increase the difference in height between girder mould 31 front edge side 31a and trailing edge side 31b.
Below step each in said method is described in detail.
101, material preparation phase: arrange girder mould 31 and be in level, makes the material being placed on girder mould 31 can not come off from girder mould 31; To the upper surface coating release agent of this girder mould 31, and the glass fabric 32 cut out is laid in girder mould 31; Lay mold release film and flow-guiding screen 33 afterwards; Finally discharge pitch tube 34 and vacuum tube 35, at lay vacuum bag above, blend compounds adhesive tape seals, thus with vacuum bag by girder mould 31, glass fabric 32 and various material, pitch tube 34 and vacuum tube 35 integral sealing such as mold release film and flow-guiding screen 33.In other words, by the structural design according to girder, successively glass fabric 32 and other perfusion auxiliary material level are laid in girder mould 31, complete preparation and the sealing thereof of the material made needed for girder mould thus.
Wherein, above-mentioned arrange girder mould 31 be in level can in the following way: 1. by the support 36 of adjustment for supporting this girder mould 31, make this support 36 maintenance level, its level is made by arranging support 36 with this, the girder mould 31 also maintenance level supported to make it, arranges girder mould 31 thus and is in level; The instrument of difference in height between the point 2. using spirit level etc. can measure measured body, measure the difference of the height between the measured point on girder mould 31, in conjunction with the radian of above-mentioned difference and girder mould 31 itself, calculate and judge girder mould 31 whether level, regulating thus and girder mould 31 is set and be in level.102, the sealing stage is checked: open the vavuum pump be connected with vacuum tube 35, air is extracted out from glass fabric 32, checks the sealing of girder mould 31, glass fabric 32 and various material, pitch tube 34 and vacuum tube 35 entirety such as mold release film and flow-guiding screen 33.In this inspection sealing stage, when after unlatching vacuum pump evacuation, above-mentioned various material is tightly fitted into as a whole with girder mould 31 under the vacuum pressures.
103, the difference in height between girder mould 31 front edge side 31a and trailing edge side 31b is increased.By adopting girder mould 31 to tilt, the mode such as upset, range difference between the horizontal plane at girder mould 31 front edge side 31a place and the horizontal plane at 31b place, trailing edge side increases, and realizes the increase of the difference in height between girder mould 31 front edge side 31a and trailing edge side 31b thus.
104, the impregnation stage: confirm above-mentioned overall tightness good after, open the valve of pitch tube 34, make resin enter girder mould 31 from resin barrel, with sized glass fibres fabric 32.
105, in the cure and demold stage: after the infiltration of glass fabric 32 completes, the heating system of opening girder mould 31 carries out the solidification of resin.
In the preparation method of the blade girder that the embodiment of the present invention provides, by between inspection sealing stage and impregnation stage, perform the process of the difference in height increased between girder mould 31 front edge side 31a and trailing edge side 31b, make gravity and vacuum pressure no longer discrete but can act on each other, thus make resin flow direction in the fibre single, resin flows speed more easy to control like this, flow to make between fibre bundle flowing be less than or equal in fibre bundle, avoid occurring the phenomenon of the not thorough or dry fiber of glass fabric 32 impregnation thus.
Wherein, Fig. 3 b shows the concrete mode of one of resin flows, that is: when increasing the difference in height between girder mould 31 front edge side 31a and trailing edge side 31b, make pitch tube 34 be positioned at the below of vacuum tube 35, to make in the described impregnation stage, resin to hoist flowing from lower.
As shown in Figure 3 b, making its tiltable by arranging support 36 as mentioned above, to drive girder mould 31 to tilt, and making the front edge side 31a at pitch tube 34 place of this girder mould 31 near ground or base, to hoist flowing from lower to make resin.
In the above-described embodiments, to hoist flowing from lower by making resin, except making except the self gravitation of resin and vacuum pressure act on each other, also because vacuum pressure needs to make resin flows under the state overcoming gravity, therefore the flowing of this resin in glass fabric 32 becomes slow, thus the infiltration of resin to glass fabric 32 can be made more abundant.
Certainly, the mode of resin flows is not limited to hoist flowing from lower shown in Fig. 3 b, also other types of flow can be adopted, as long as by increasing the difference in height between girder mould front edge side and trailing edge side, act on each other to make resin gravity and vacuum pressure, resin flow direction in the fibre can be made single, and resin flows speed more easy to control flows to make between fibre bundle flowing be less than in fibre bundle, avoids occurring the phenomenon of the not thorough or dry fiber of glass fabric impregnation thus.
In addition, the concrete modes of emplacement of one of the equipment that the making that Fig. 3 b further illustrates blade girder uses, that is: the difference in height between girder mould 31 front edge side 31a and trailing edge side 31b equals the distance L between described front edge side 31a and described trailing edge side 31b.
In fig 3b, the difference in height between front edge side 31a and trailing edge side 31b equals the distance L between front edge side 31a and trailing edge side 31b, and namely now described difference in height reaches maximum.In other words, for the level of girder mould 31 horizontal positioned before this, now girder mould 31 is in the heeling condition of vertical placement.Pitch tube 34 is positioned at lower and vacuum tube 35 is positioned at eminence, therefore, after resin flows out from pitch tube 34, to be hoisted flowing, namely flow from bottom to top in figure by vacuum pressure from lower.In this flow process, because resin is also subject to the Action of Gravity Field reverse with vacuum pressure, therefore need to overcome gravity by vacuum pressure, make resin realization flowing from bottom to top, thus now flowing velocity becomes slow.Thus, now resin gravity and vacuum pressure concentrate on the above-below direction in figure, namely perpendicular to the direction of horizontal plane, gravity and vacuum pressure are no longer discrete but act on each other, resin flow direction is in the fibre made to be single direction from bottom to top, thus resin flows speed more easy to control flows to make between fibre bundle flowing be less than or equal in fibre bundle, therefore can make the abundant sized glass fibres fabric 32 of resin, avoid the not thorough or dry fiber phenomenon of glass fabric impregnation.
In the above-described embodiments, whole gravity of resin and vacuum pressure can be made to act on each other, that is: make gravity and vacuum pressure act on same direction perpendicular to horizontal plane.Therefore, resin flow direction is in the fibre the single flowing (described above) from the bottom up, resin flows speed more easy to control like this flows to make between fibre bundle flowing be less than in fibre bundle, avoids occurring the phenomenon of the not thorough or dry fiber of glass fabric 32 impregnation thus.Certainly, difference in height between girder mould front edge side and trailing edge side is not limited to the difference in height (namely girder mould is plumbness) shown in Fig. 3 b, also can be the distance that difference in height is less than between front edge side and trailing edge side, namely girder mould is heeling condition, as mentioned above, as long as by increasing the difference in height between girder mould front edge side and trailing edge side, act on each other to make resin gravity and vacuum pressure, resin flow direction in the fibre can be made single, resin flows speed more easy to control flows to make flowing between fibre bundle be less than or equal in fibre bundle, avoid occurring the phenomenon of the not thorough or dry fiber of glass fabric impregnation thus.
In the above-described embodiments, Fig. 4 to 5 shows the concrete structure of the support that the embodiment of the present invention provides, that is: the bottom of the support supporting described girder mould is provided with hinge; Difference in height between described increase girder mould front edge side and trailing edge side specifically comprises: make described girder mould along the direction towards described front edge side or rotate around described hinge along the direction towards described trailing edge side.
Because the height of pitch tube need lower than vacuum tube, but the setting position of pitch tube and vacuum tube both can be pitch tube at front edge side, can may also be pitch tube in trailing edge side.Accordingly, if pitch tube is at front edge side, then vacuum tube is in trailing edge side, for making pitch tube lower than vacuum tube, then tilts to front edge side and direction, pitch tube place or rotates; If pitch tube is in trailing edge side, then vacuum tube is at front edge side, for making pitch tube lower than vacuum tube, then tilts to trailing edge side and direction, pitch tube place or rotates.
Certainly, the method increasing the difference in height between girder mould front edge side and trailing edge side is not limited to the hinge type shown in Fig. 4 and Fig. 5, also can be to adopt to make the support of girder mould stretch other structure increased known to the those skilled in the art such as described difference in height.
Wherein, Fig. 4 shows a kind of concrete structure of the support of support girder mould, that is: on described support 42, be provided with telescoping mechanism 43, and described telescoping mechanism 43 rotates around described hinge 44 for driving described support 42.
In addition, Fig. 5 shows the another kind of concrete structure of the support of support girder mould, that is: on described support 52, be provided with suspension centre X and suspension centre Y, and described suspension centre X and suspension centre Y can hang to drive described support 52 to rotate around described hinge 53 by outside haulage gear.
Support shown in Fig. 4 and Fig. 5 rotates around hinge by telescoping mechanism or haulage gear etc., increases the difference in height between girder mould front edge side and trailing edge side with this.Wherein, the control panel that the hydraulic overturn system 43 shown in Fig. 4 can be arranged on support 42 end by controls that its upset starts, stops, suddenly stopping, direction anyway.Specifically, a base angle of support 42 is arranged on ground or base by hinge 44, and support 42 can be rotated around hinge 44; In addition, on support 42, be connected with the hydraulically extensible bar 43a of hydraulic overturn system 43 at spacing intervals, stretching by hydraulically extensible bar 43a, support 42 can be driven to rotate around hinge 44, thus support 42 rotates jointly with girder mould 41, increase the difference in height between girder mould 41 front edge side 41a and trailing edge side 41b.In addition, support 52 shown in Fig. 5 is provided with two suspension centres X, Y, by using the outside haulage gears such as overhead traveling crane, above-mentioned suspension centre X, Y are drawn, auxiliary stand 52 rotates around hinge 53, thus support 52 rotates jointly with girder mould 51, increase the difference in height between girder mould 51 front edge side 51a and trailing edge side 51b.
Certainly, the structure of girder mould rack is not limited to structure when above-mentioned employing telescoping mechanism and haulage gear, and it can in conjunction with other structure known to adopted type of drive (such as adopting the drive of self moveable travel mechanism to carry out driving arm etc.) setup cost those skilled in the art.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (4)
1. a preparation method for blade girder, comprising: material preparation phase, inspection sealing stage, impregnation stage and cure and demold stage, it is characterized in that, the bottom of the support supporting described girder mould is provided with hinge;
Also comprise between inspection sealing stage and impregnation stage: make described girder mould along the direction towards front edge side or rotate around described hinge along the direction towards trailing edge side, to increase the difference in height between girder mould front edge side and trailing edge side,
Make pitch tube be positioned at the below of vacuum tube, to make in the described impregnation stage, resin to hoist flowing from lower.
2. method according to claim 1, is characterized in that, the difference in height between described girder mould front edge side and trailing edge side equals the distance between described front edge side and described trailing edge side.
3. method according to claim 1, is characterized in that,
Be provided with telescoping mechanism on the bracket, described telescoping mechanism rotates around described hinge for driving described support.
4. method according to claim 1, is characterized in that,
Be provided with suspension centre on the bracket, described suspension centre hangs to drive described support to rotate around described hinge by outside haulage gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210296059.0A CN102825801B (en) | 2012-08-17 | 2012-08-17 | Manufacturing method of blade girder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210296059.0A CN102825801B (en) | 2012-08-17 | 2012-08-17 | Manufacturing method of blade girder |
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| CN102825801A CN102825801A (en) | 2012-12-19 |
| CN102825801B true CN102825801B (en) | 2014-12-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080136060A1 (en) * | 2006-12-08 | 2008-06-12 | Gkn Westland Aerospace, Inc. | System and method for forming and curing a composite structure |
| TW200916305A (en) * | 2007-10-12 | 2009-04-16 | Carbon Based Technology Inc | Vacuum assisted resin infusion integral forming method for composite without coating |
| JP4805375B2 (en) * | 2009-05-18 | 2011-11-02 | 東レ株式会社 | Method for manufacturing FRP structure |
| CN202071360U (en) * | 2011-04-29 | 2011-12-14 | 昆山华风风电科技有限公司 | Fan blade manufactured using fan blade shearing rib integral infusion forming technology |
| DE102011054152A1 (en) * | 2010-10-18 | 2012-04-19 | Visteon Global Technologies, Inc. | Plastic mass molding method, involves positioning fiber mat in precisely before splashing process, where mat is made of biological degradable synthetic resin, and performing extrusion coating on fiber in order to inject sprayed material |
| CN102518567A (en) * | 2011-12-26 | 2012-06-27 | 无锡韦伯风能技术有限公司 | Lightweight high-strength blade and manufacturing technology thereof |
-
2012
- 2012-08-17 CN CN201210296059.0A patent/CN102825801B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080136060A1 (en) * | 2006-12-08 | 2008-06-12 | Gkn Westland Aerospace, Inc. | System and method for forming and curing a composite structure |
| TW200916305A (en) * | 2007-10-12 | 2009-04-16 | Carbon Based Technology Inc | Vacuum assisted resin infusion integral forming method for composite without coating |
| JP4805375B2 (en) * | 2009-05-18 | 2011-11-02 | 東レ株式会社 | Method for manufacturing FRP structure |
| DE102011054152A1 (en) * | 2010-10-18 | 2012-04-19 | Visteon Global Technologies, Inc. | Plastic mass molding method, involves positioning fiber mat in precisely before splashing process, where mat is made of biological degradable synthetic resin, and performing extrusion coating on fiber in order to inject sprayed material |
| CN202071360U (en) * | 2011-04-29 | 2011-12-14 | 昆山华风风电科技有限公司 | Fan blade manufactured using fan blade shearing rib integral infusion forming technology |
| CN102518567A (en) * | 2011-12-26 | 2012-06-27 | 无锡韦伯风能技术有限公司 | Lightweight high-strength blade and manufacturing technology thereof |
Non-Patent Citations (1)
| Title |
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| JP特许第4805375号B2 2011.11.02 * |
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