CN110355920A - A kind of mold being used to prepare plate girder and plate girder manufacturing method - Google Patents
A kind of mold being used to prepare plate girder and plate girder manufacturing method Download PDFInfo
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- CN110355920A CN110355920A CN201910661060.0A CN201910661060A CN110355920A CN 110355920 A CN110355920 A CN 110355920A CN 201910661060 A CN201910661060 A CN 201910661060A CN 110355920 A CN110355920 A CN 110355920A
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- plate girder
- girder
- mold
- plate
- die face
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Classifications
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- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
-
- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/26—Moulds or cores
-
- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/42—Casting under special conditions, e.g. vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of mold for being used to prepare plate girder and plate girder manufacturing method, and mold includes: die face, is equipped with muti-piece pultrusion plate thereon, forms plate girder；First side of die face is fixed with a mounting flange, and mounting flange is contacted with the first side side wall of plate girder；Second side on die face is arranged in loose flange；Several dismountable limiting tools, two sides are separately fixed on loose flange on mounting flange, plate girder are compressed and profile-followed with die face.The present invention can solve the problem of pultrusion plate is not easy the form-dependent character difference and girder buckling deformation of laying, pultrusion plate girder and mold in conventional girder mold, it is ensured that plate girder is without warpage.
Description
Technical field
The present invention relates to wind electricity blade field, in particular to a kind of mold for being used to prepare plate girder and girder manufacturer
Method.
Background technique
Development with from wind electricity blade to enlarged direction, lightweight, high-strength advanced composite material (ACM) are answered in blade
With.For fiber pultrusion plate since fiber straightness is high, fiber content is high, it is compound that the modulus and intensity of material are higher than common pouring type
Material becomes a kind of new material being concerned in wind-powered electricity generation industry.
Wind electricity blade mainly constitutes structural I-beam by blade girder and web and provides primary stiffness for blade.In conventional work
Under the conditions of skill, girder prefabricated component is prepared through vacuum perfusion process after being first laid with unidirectional fiber cloth, it is then that girder is prefabricated
Part is hung in blade shell, prepares blade through secondary vacuum perfusion.The technical process can reduce blade girder in housing mould
Interior laying and perfusion and formed account for the mould time, reduce this critical component of blade girder because perfusion defect lead to entire blade report
Useless and formation cost.Fiber pultrusion plate is generally used for preparation blade girder because of its high-modulus, high-intensitive advantage.Thus,
The preparation process of fiber pultrusion plate girder is very crucial.
However, fiber pultrusion plate is as the strip rectangular plate with certain rigidity, when laying with girder mold
Form-dependent character is poor.Using traditional double fixed rib molds, this rigid body of plate girder can interfere with mold and can not be routed to
Position.When the apparent region of girder die face Curvature varying is laid with, plate is not easy to attach with die face, is easy to appear and sticks up
The problems such as bent, not profile-followed.And there is also Curvature varying, the plate girder side walls and girder mold of stacking for girder mold flange stile
The problems such as flange is not easy to attach, is easy to cause fiber pultrusion plate girder side wall richness resin, dislocation.Therefore, it is necessary to according to fibre
The process characteristic of Wella plate squeezing material girder proposes a kind of girder mold for being suitble to prepare fiber pultrusion plate girder and using should
Mold prepares the process of fiber pultrusion plate girder.
Summary of the invention
The purpose of the present invention is to provide a kind of mold for being used to prepare plate girder and girder manufacturing method, mold is used
Arcuate die type face, pultrusion plate are laid on the die face, and die face is linked together with a mounting flange, pultrusion plate
Side side wall is close to mounting flange, and the flexible rib of loose flange abuts against the other side side wall of plate girder, by limiting tool
Two sides be separately fixed on loose flange and mounting flange on, limiting tool by plate girder compress and with girder die face
With the shape, thus solve pultrusion plate be not easy to be laid in conventional girder mold, the form-dependent character difference of pultrusion plate girder and mold with
And the problem of girder buckling deformation.
In order to achieve the above object, the invention is realized by the following technical scheme:
A kind of mold being used to prepare plate girder includes: die face is equipped with muti-piece pultrusion plate thereon, is formed
Plate girder；First side of the die face is fixed with mounting flange, the mounting flange and the first of the plate girder
The contact of side side wall；Second side on the die face is arranged in loose flange；Several limiting tools, two sides are solid respectively
It is scheduled on the loose flange on the mounting flange, plate girder is compressed and profile-followed with die face.
Preferably, second side of the die face is fixedly connected with extendable platform, the platform and dismountable described
Loose flange Matching installation and platform and loose flange bottom surface coincide；The loose flange is connect by fixing bolt with platform.
Preferably, the loose flange is equipped with: the gasket on the downside of it, in loose flange and die face
Second side forms sealing space；And/or flexible rib on its inside, against second side side wall of plate girder.
Preferably, the gasket is silica gel material；The flexibility rib is elastomeric silica gel material or inflating air
Capsule.
Preferably, dismountable limiting tool is connect with loose flange and mounting flange respectively by fixing bolt；Limit
Multiple lightening holes are opened up in tooling.
Preferably, the limiting tool is metal material.
Preferably, one is made in the mounting flange and the die face；The mounting flange is arranged in the mold
The slightly lower side of profile；The height of the mounting flange is higher than the plate girder.
Preferably, the die face of the arc is consistent with the type face in blade shell girder region；The pultrusion plate with
It is laid with along length of blade direction, the mode that chord length direction is spliced, thickness direction stacks is laid on the die face.
Preferably, vacuum-pumping system and heating system are equipped on mold；The vacuum-pumping system is covered in plate
The vacuum pumping opening of girder, mounting flange and loose flange, the vacuum-pumping system is arranged on the mounting flange；It is described
Heating system is arranged on mounting flange and/or on loose flange.
The plate girder manufacturing method based on mold as described above that the present invention also provides a kind of, this method includes:
Step 1 is laid with muti-piece pultrusion plate in the die face with mounting flange, forms plate girder；
Step 2, loose flange of the installation with flexible rib and gasket, make the flexible rib of loose flange against plate
The side wall of girder simultaneously prevents its sliding；
Multiple limiting tool two sides are respectively and fixedly installed on loose flange and on mounting flange by step 3；
Step 4 is laid with vacuum-pumping system and heating system, under the conditions of negative pressure of vacuum, carries out resin to plate girder
Plate girder is carried out solidifying and setting by being heating and curing by perfusion；
Step 5, removal vacuum-pumping system and heating system, remove limiting tool, remove loose flange, prepare and meet
It is required that plate girder.
Compared with prior art, beneficial effects of the present invention include:
(1) present invention is laid with using the type face consistent arcuate die type face with blade shell girder region, pultrusion plate
On the die face, so that the lower surface of the plate girder of subsequent preparation is overlapped with blade external form；
(2) die face is linked together with mounting flange, when being laid on pultrusion plate die face and with the increasing of thickness
Add, pultrusion plate side side wall is close to mounting flange；Loose flange of the invention has the flexible rib with certain elasticity, supports
Occurs the sliding along chord length direction against the other side side wall of plate girder, when pultrusion plate being avoided to be laid with；
(3) flexible rib of the invention can also play the role of reduce plate girder side wall occur it is more lacunose so that
Plate girder side wall is effectively avoided more rich resin occur in the priming by vacuum stage；
(4) the slightly lower side of die face height is arranged in mounting flange of the invention, to avoid plate girder to height
Spend a slightly lower side slip；
(5) loose flange of the invention has gasket, forms sealing for the platform in loose flange and die face
Space guarantees air-tightness in favor of the subsequent vacuum environment vacuumized；
(6) present invention uses multiple limiting tools, with plate girder upper surface with the shape and with certain rigidity, limiting tool
Two sides be separately fixed on loose flange and mounting flange on, multiple limiting tools by plate girder compress and with girder mold
Type face is profile-followed, and then ensures that plate girder without warpage, and is laid in place.
Detailed description of the invention
Fig. 1 is the girder die face schematic diagram with mounting flange of the invention；
Fig. 2 is that plate girder schematic diagram is laid on die face of the invention；
Fig. 3 is the loose flange schematic diagram of the invention with flexible rib and gasket；
Fig. 4 is limiting tool schematic diagram of the invention；
Fig. 5 is fiber pultrusion plate girder mold schematic diagram of the invention；
Fig. 6 is the preparation method flow chart of plate girder of the invention.
Specific embodiment
Keep the purposes, technical schemes and advantages of the embodiment of the present invention clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
As Figure 1-Figure 5, the invention discloses a kind of mold for being used to prepare fiber pultrusion plate girder, which is drawn
Plate squeezing material girder mold includes: being fixed with the die face 1 of a mounting flange 11, removably with flexible rib 21 and sealing
The loose flange 2 of pad 22 and multiple limiting tools 3 this three parts.
The die face 1 of arc is consistent with the type face in blade shell girder region, so as to the plate girder 4 of subsequent preparation
Lower surface be overlapped with blade external form.
As shown in Fig. 2, when the pultrusion plate 41 of muti-piece equal in width is laid on the die face 1 of arc, with thickness
Increase, 41 a side of pultrusion plate contacts with mounting flange 11.Pultrusion plate 41 is along the laying of length of blade direction, chord length direction
The mode that splicing, thickness direction stack is laid on die face 1, that is, is laid with and is formed plate girder 4.
Mounting flange 11 is arranged in the 1 slightly lower side (along leaf chord length direction) of height of die face and prolongs outward
It stretches, to avoid plate girder to the slightly lower side slip of height.Illustratively, the height of mounting flange 11 is higher than on plate girder 4
With the height at 11 contact position of mounting flange, it is more than about 30-50mm, mounting flange 11 is fixed with one with die face 1.
The other side (i.e. the slightly higher side of 1 height of die face) of die face 1 is fixedly connected with prolonging for one fixed width
It is stretched flat platform 12,2 bottom surface of loose flange of the platform 12 and subsequent installation coincide.Multiple first bolts hole are additionally provided on platform 12
121, so as to installation activity flange 2.
As shown in figure 3, the flexible gear of the gasket 22 and side on its inside that are additionally provided on loose flange 2 on the downside of it
Side 21.
Gasket 22 is used to form sealing space in the platform 12 of loose flange 2 and die face 1, guarantees air-tightness with benefit
In the subsequent vacuum environment vacuumized.Preferably, gasket 22 is silica gel material.
Flexible rib 21 has certain elasticity, and effect is side side wall (and the plate girder 4 for abutting against plate girder 4
Other side side wall be close to mounting flange 11), avoid pultrusion plate 41 be laid with when occur along leaf chord length direction sliding.It is soft
Property rib 21 can also play the role of reduce 4 side wall of plate girder occur it is more lacunose so that effective in the priming by vacuum stage
4 side wall of plate girder is avoided more rich resin occur.Preferably, flexible rib 21 is a kind of elastomeric silica gel material, or
For a kind of air bag form.
As shown in figure 3, loose flange 2 is detachable, loose flange 2 is equipped with multiple second bolts hole 210, to plate girder
After the completion of laying, using fixing bolt 211 also cross the first bolt hole 121 and the second bolt hole 210, loose flange 2 is pacified
Girder plate 4 is abutted against on platform 12, and through flexible rib 21 (such as air bag after high resiliency silica gel or inflation).
Die face 1 and mounting flange 11 can be fabricated by glass steel material or metal material.
Entire fiber pultrusion plate girder mold is equipped with vacuum-pumping system (i.e. entire vacuum-pumping system covering surface
Plate girder 4, the mounting flange 11, loose flange 2 being related on die face 1), the priming by vacuum for subsequent plate girder 4
Technique；Wherein, the vacuum pumping opening of vacuum-pumping system is arranged on mounting flange 11, take out by vacuum pumping opening true
Sky, gasket 22 can guarantee air-tightness in favor of keeping vacuum environment at this time, and air enters generation gas when preventing resin from injecting
Bubble, avoids entire product from scrapping.Mounting flange 11 and/loose flange 2 are equipped with heating system, the heating for plate girder 4
Curing process, vacuum-pumping system and heating system here constitute the priming by vacuum auxiliary material system of plate girder 4.
As shown in fig. 4-5, limiting tool 3 is tooling profile-followed and with certain rigidity with 4 upper surface of plate girder.Limit
The two sides of position tooling 3 are separately fixed at 11 upper end of 2 upper end of loose flange and mounting flange.
Wherein, after plate girder 4 is laid with completion and loose flange 2 is installed, fixing bolt 311 and activity are used
Third bolt hole 212 on flange 2 cooperates, and 3 side of limiting tool is fixedly installed to loose flange 2, meanwhile, it will also limit work
The other side for filling 3 is fixedly installed to mounting flange 11 (for example, it is also possible to by the on fixing bolt 313 and mounting flange 11
Four bolts hole 111 (shown in Fig. 1) cooperation is installed), then multiple limiting tools 3 by plate girder 4 compress and with girder mold
Type face 1 is profile-followed, and then ensures that plate girder 4 without warpage, and is laid in place.
Limiting tool 3 is metal material, opens up multiple lightening holes 312 above, which can also be in later period vacuum
Perfusion phase provides flow channel for resin flowing.
As shown in Fig. 5-Fig. 6, the present invention provides a kind of preparation method of plate girder comprising the steps of:
Step 1 is laid with multi-sheets in 1 region of die face with mounting flange 11, and laying forms plate girder 4；
Step 2, then loose flange 2 of the installation with flexible rib 21 and gasket 22 make the flexible gear of loose flange 2
Side 21 abuts against 4 side wall of plate girder and prevents its sliding；Wherein, if the flexible rib 21 of loose flange 2 is air bag
Form then inflates the air bag by charge valve 5 after installation activity flange 2；
Multiple limiting tools 3 are installed in place by step 3 again；
Therefore, by above-mentioned mold component and installation method, plate girder 4 can be laid in place.
Then step 4 is laid with priming by vacuum auxiliary material system on girder mold, then under the conditions of negative pressure of vacuum, to plate
Material girder 4 carries out resin infusion, and by being heating and curing, plate girder 4 is carried out solidifying and setting.
After the completion of step 5, above-mentioned operation, priming by vacuum auxiliary material system is removed, removes limiting tool 3, removes loose flange
2, that is, prepare satisfactory plate girder.
Step 6, plate girder through cutting polishing etc. postprocessing working procedures, prepare meet production need plate girder in advance at
Type part.
Step 7, the subsequent blade preparation method using routine, plate girder preformed member are hung in mold, after progress
Continuous blade production.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of mold for being used to prepare plate girder, characterized by comprising:
Die face (1) is equipped with muti-piece pultrusion plate (41) thereon, is formed plate girder (4)；
First side of the die face (1) is fixed with mounting flange (11), the mounting flange (11) and the plate girder
(4) the first side side wall contact；
Loose flange (2), the second side being arranged on the die face (1)；
Several limiting tools (3), two sides be separately fixed on the loose flange (2) and the mounting flange (11) on,
Plate girder (4) are compressed and profile-followed with die face (1).
2. being used to prepare the mold of plate girder as described in claim 1, which is characterized in that
Second side of the die face (2) is fixedly connected with extendable platform (12), the platform (12) and dismountable described
Loose flange (2) Matching installation and platform (12) and loose flange (2) bottom surface coincide；
The loose flange (2) is connect by fixing bolt with the platform (12).
3. being used to prepare the mold of plate girder as claimed in claim 1 or 2, which is characterized in that the loose flange (2) sets
Have: the gasket (22) on the downside of it, for forming sealing space in second side of loose flange (2) and die face (1)；
And/or flexible rib (21) on its inside, against second side side wall of plate girder (4).
4. being used to prepare the mold of plate girder as claimed in claim 3, which is characterized in that
The gasket (22) is silica gel material；
The flexibility rib (21) is elastomeric silica gel material or air bag.
5. being used to prepare the mold of plate girder as described in claim 1, which is characterized in that
Dismountable limiting tool (3) is connect with loose flange (2) and mounting flange (11) respectively by fixing bolt；Limit work
Multiple lightening holes (312) are opened up on dress (3).
6. the mold as claimed in claim 1 or 5 for being used to prepare plate girder, which is characterized in that the limiting tool (3) is
Metal material.
7. being used to prepare the mold of plate girder as described in claim 1, which is characterized in that
One is made in the mounting flange (11) and the die face (1)；
Mounting flange (11) setting side slightly lower in the die face (1) height；
The height of the mounting flange (11) is higher than the plate girder (4).
8. being used to prepare the mold of plate girder as described in claim 1, which is characterized in that
The die face (1) of the arc is consistent with the type face in blade shell girder region；
The pultrusion plate (41) is laid in a manner of stacking along the laying of length of blade direction, the splicing of chord length direction, thickness direction
On the die face (1).
9. being used to prepare the mold of plate girder as described in claim 1, which is characterized in that
Vacuum-pumping system and heating system are equipped on mold；
The vacuum-pumping system is covered in plate girder (4), mounting flange (11) and loose flange (2), the vacuum suction
The vacuum pumping opening of system is arranged on mounting flange (11)；
The heating system setting is on mounting flange (11) and/or on loose flange (2).
10. a kind of plate girder manufacturing method based on mold as described in any one of claims 1-9, which is characterized in that
This method includes:
Step 1 is laid with muti-piece pultrusion plate in the die face (1) with mounting flange (1), is formed plate girder (4)；
Step 2, loose flange (2) of the installation with flexible rib (21) and gasket (22) make the flexible gear of loose flange (2)
Side (21) against plate girder (4) side wall and prevent its sliding；
Step 3, by multiple limiting tools (2) two sides be respectively and fixedly installed on loose flange (2) and mounting flange (11) on；
Step 4 is laid with vacuum-pumping system and heating system, under the conditions of negative pressure of vacuum, carries out resin filling to plate girder (4)
Plate girder (4) are carried out solidifying and setting by being heating and curing by note；
Step 5, removal vacuum-pumping system and heating system, are removed limiting tool (3), are removed loose flange (2), are prepared symbol
Close desired plate girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661060.0A CN110355920B (en) | 2019-07-22 | 2019-07-22 | Die for preparing plate girder and manufacturing method of plate girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661060.0A CN110355920B (en) | 2019-07-22 | 2019-07-22 | Die for preparing plate girder and manufacturing method of plate girder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110355920A true CN110355920A (en) | 2019-10-22 |
| CN110355920B CN110355920B (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910661060.0A Active CN110355920B (en) | 2019-07-22 | 2019-07-22 | Die for preparing plate girder and manufacturing method of plate girder |
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| Country | Link |
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| CN (1) | CN110355920B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111169036A (en) * | 2019-12-26 | 2020-05-19 | 中航复合材料有限责任公司 | Be used for fashioned flange frock of combined material fan blade tenon |
| CN111231365A (en) * | 2019-12-26 | 2020-06-05 | 中航复合材料有限责任公司 | Molding tool for composite material fan blade laying unit body |
| CN113119495A (en) * | 2021-04-02 | 2021-07-16 | 中材科技风电叶片股份有限公司 | Blade shell preparation method and blade |
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| WO2011113812A1 (en) * | 2010-03-15 | 2011-09-22 | Vestas Wind Systems A/S | Improved wind turbine blade spar |
| CN103358570A (en) * | 2013-07-30 | 2013-10-23 | 无锡乘风新能源设备有限公司 | Method for preventing product demolding in megawatt blade die locking process |
| CN104002402A (en) * | 2014-06-04 | 2014-08-27 | 洛阳双瑞风电叶片有限公司 | Universal web mould structure for wind power blade |
| CN204487411U (en) * | 2015-01-30 | 2015-07-22 | 迪皮埃风电叶片大丰有限公司 | A kind of adjustable type wind electricity blade girder lay position positioning tool |
| CN106945306A (en) * | 2017-05-11 | 2017-07-14 | 常州市宏发纵横新材料科技股份有限公司 | Using the technique of the board making wind electricity blade of pultrusion |
| CN109822937A (en) * | 2019-03-25 | 2019-05-31 | 上海电气风电集团有限公司 | It is a kind of to prick beam tooling and the blade girder production method using the bundle beam tooling |
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2019
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| WO2011113812A1 (en) * | 2010-03-15 | 2011-09-22 | Vestas Wind Systems A/S | Improved wind turbine blade spar |
| CN103358570A (en) * | 2013-07-30 | 2013-10-23 | 无锡乘风新能源设备有限公司 | Method for preventing product demolding in megawatt blade die locking process |
| CN104002402A (en) * | 2014-06-04 | 2014-08-27 | 洛阳双瑞风电叶片有限公司 | Universal web mould structure for wind power blade |
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| CN109822937A (en) * | 2019-03-25 | 2019-05-31 | 上海电气风电集团有限公司 | It is a kind of to prick beam tooling and the blade girder production method using the bundle beam tooling |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111169036A (en) * | 2019-12-26 | 2020-05-19 | 中航复合材料有限责任公司 | Be used for fashioned flange frock of combined material fan blade tenon |
| CN111231365A (en) * | 2019-12-26 | 2020-06-05 | 中航复合材料有限责任公司 | Molding tool for composite material fan blade laying unit body |
| CN113119495A (en) * | 2021-04-02 | 2021-07-16 | 中材科技风电叶片股份有限公司 | Blade shell preparation method and blade |
| WO2022206155A1 (en) * | 2021-04-02 | 2022-10-06 | 中材科技风电叶片股份有限公司 | Preparation method for blade shell, and blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110355920B (en) | 2021-11-16 |
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