CN108705785A - Composite material spiral pipe, forming die and forming process - Google Patents
Composite material spiral pipe, forming die and forming process Download PDFInfo
- Publication number
- CN108705785A CN108705785A CN201810414015.0A CN201810414015A CN108705785A CN 108705785 A CN108705785 A CN 108705785A CN 201810414015 A CN201810414015 A CN 201810414015A CN 108705785 A CN108705785 A CN 108705785A
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- Prior art keywords
- helix tube
- composite material
- female mold
- green body
- core bar
- 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.)
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- 239000002131 composite material Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims description 36
- 238000000465 moulding Methods 0.000 claims description 35
- 238000010146 3D printing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 229920006351 engineering plastic Polymers 0.000 claims description 11
- 238000003475 lamination Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000002955 isolation Methods 0.000 description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/40—Plastics, e.g. foam or rubber
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
-
- 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
- B29L2023/00—Tubular articles
-
- 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
- B29L2031/772—Articles characterised by their shape and not otherwise provided for
- B29L2031/7732—Helical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
Abstract
The invention provides a composite material spiral pipe, a forming mold and a forming process. The composite material spiral pipe comprises a spiral pipe forming female mold and an auxiliary forming mold, wherein the auxiliary forming mold comprises a paving core rod and a spiral core rod. According to the composite material spiral pipe, the forming mold and the forming process, the spiral pipe forming female mold and the auxiliary forming mold which are printed in a 3D mode are used, and the integrated female mold is adopted for forming, so that the spiral pipe is low in cost, good in product quality and high in production efficiency.
Description
Technical field
The present invention relates to a kind of composite material helix tube, molding die and moulding process, belong to composite material manufacturing engineering
Technical field.
Background technology
Thermosetting resin base composite material parts have largely in fields such as aerospace, automobile, urban construction, pressure vessels
Using.For thermosetting resin based composites helix tube because its shape is special, traditional method is to use RTM techniques or stamper
Prepreg is wrapped on core model by skill, is placed in molding die, and isolation film, airfelt, vacuum bag are spread in mold outer surface,
Pressurized, heated curing molding is carried out after envelope.This conventional method there are the problem of have：(1) lead time is long, processing cost
It is high.Molding die generally uses metal material to manufacture, and needs the structure design metal forming mold according to part, process-cycle
Long, input is greatly.Especially at research and development of products initial stage, product design is in during constantly improve, and molding die will be also adjusted
And improvement, so, the shortcomings that process-cycle is long, high processing costs, more highlights；(2) from the point of view of technological operation angle, composite wood
It is extremely difficult to expect that the core model inside when helix tube molding demoulds, especially small-bore composite material helix tube can not use group
The mode for closing core model carries out curing molding, and generally using soluble evaporative pattern as core model, the demoulding period is longer, production efficiency
It is relatively low；(3) external mold is generally upper mold section, female die assembling die, there are apparent scale at die joint after forming parts,
The quality of product is adversely affected.
Invention content
It is an object of the invention to overcome the shortage of prior art, it is high to provide one kind at low cost, good product quality, production efficiency
Composite material helix tube, molding die and moulding process.
Technical solution of the invention：A kind of composite material spiral pipe shaping mould, including helix tube shaping female mold and
Assistant formation mold, the assistant formation mold include paving core bar and spiral core bar；
The helix tube shaping female mold is helix, is formed using 3D printing, helix tube shaping female mold inner surface type
Face structure is consistent with the outer surface structure of composite material helix tube to be formed；
The paving core bar is cylindrical structure, the laying of the green body for composite material helix tube to be formed；
The spiral core bar is helical form, screws in the composite material helix tube to be formed being placed in helix tube shaping female mold
In green body, green body is made to be bonded with helix tube shaping female mold, helix core rod outer surface moulding surface structure and composite material spiral to be formed
The green body moulding surface structure of pipe is consistent.
The helix tube shaping female mold is formed using nonmetallic materials 3D printings such as engineering plastics, composite materials, spiral
The 3D printing material that pipe shaping female mold is selected wants that subsequent forming temperature and pressure can be born, and wants to facilitate destruction after shaping
Take out product.It is preferred that engineering plastics, such as it can be used for using ABS or PLA the material of 3D printing.
A kind of composite material helix tube moulding process, is realized by following steps：
The first step prepares helix tube shaping female mold,
Using 3D printing technique manufacture helix tube shaping female mold, helix tube shaping female mold inner surface moulding surface structure with it is to be formed
The outer surface structure of composite material helix tube is consistent；
3D printing technique is known in the art, according to required structure design 3D printing technique.Due to being tubular structure, printing
When need that internal dendriform support is arranged in print software, to ensure the shape type face precision of mold；Helix tube shaping female mold is beaten
After the completion of print, the dendriform support of mould inside is rooted out, and supports shade with true inside visual inspection under strong light projection
Guarantor roots out support totally.
Second step, the laying of the green body of composite material helix tube to be formed,
Vacuum bag material and pipe-type woven set prepreg are laid successively on paving core bar, by lamination entirety after the completion of lay
It is extracted from paving core bar, obtains the green body of composite material helix tube to be formed；
Vacuum bag material includes vacuum bag, airfelt and has hole isolation film etc., is vacuum-bag process versatile material.Tubulose is compiled
It knits set prepreg and is known in the art technology, commonly used in producing tubular composite material.
The outer diameter of the paving core bar can pass through composite material spiral pipe outside diameter to be formed, the composite material spiral thickness of pipe
It spends, there is hole isolation film thickness, airfelt thickness, vacuum bag thickness etc. to be converted to obtain.
Third walks, second step is obtained composite material helix tube to be formed green body be packed into the obtained helix tube of the first step at
In type former；
Green body one end of composite material helix tube to be formed is sleeved on traction rope, by the base of composite material helix tube to be formed
Body is penetrated from helix tube shaping female mold one end, is pierced by from the other end, and the green body of composite material helix tube to be formed is made to enter spiral
Inside pipe shaping female mold；
Thin wire, rope etc. can be used in the traction rope, can play and wear the green body of composite material helix tube to be formed
To the effect of mold, there are some strength and flexible material.
4th step is screwed in inside composite material helix tube green body to be formed using spiral core bar, treats forming composite
Helix tube green body pressurized so that composite material helix tube green body to be formed is bonded with helix tube shaping female mold, then by spiral
Core bar screws out；
5th step, vacuum-bag process composite material helix tube.
This step is known in the art technology, and the different selection molding ginsengs of prepreg material are covered according to pipe-type woven used
Number and cure parameter.
Specially：The vacuum bagging skin of mould inside is cleaned out with solvent, vacuum bag is beaten in mold outer surface, is connected
Vacuum pump, inner vacuum bag both ends are communicated with air, and pipe-type woven set prepreg gradually can be bonded mould with type under the vacuum pressures
Tool ensures helix tube shape；The intact molds and products of envelope are put into togerther heating and thermal insulation in baking oven or are cured at normal temperatures；
Cure vacuum bag inside and out removing after the completion, internal airfelt, have hole isolation film, helix tube shaping female mold is destroyed, is taken
Go out composite material helix tube.
A kind of composite material helix tube prepared using above-mentioned forming method, using integrated former, vacuum-bag process.
The advantageous effect of the present invention compared with prior art：
(1) by the present invention in that with the helix tube shaping female mold and assistant formation mold of 3D printing, using integrated former at
Type so that helix tube is at low cost, good product quality, production efficiency are high；
(2) present invention uses the helix tube shaping female mold of 3D printing, and at low cost, the mold process-cycle is short, printing precision can
It can be destroyed after composite material helix tube curing molding as disposable mold up to 0.1mm, reduce such zero
The demoulding difficulty of part；
(3) present invention ensure that vacuum-bag process, normal by special helix tube shaping female mold and assistant formation mold
Warm or cryogenic conditions, the forming under the pressure composite material helix tube vacuumized avoid, using large scale equipments such as autoclaves, reducing life
Produce cost；
(4) present invention does not generate conventional molding side using integrated female mould forming method, composite material helix tube smooth outer surface
The die joint scale formed in method；
(5) present invention is overcome the laying due to prepreg in mold, deformation, is not bonded by assistant formation mold
The problem of causing product quality to decline improves product quality.
Description of the drawings
Fig. 1 is spiral tube structure figure of the present invention；
Fig. 2 is that inventive die installs local structural graph；
Fig. 3 is that paving core bar of the present invention is laid with pipe-type woven set prepreg structure chart；
Fig. 4 is the ports Fig. 3 partial enlarged view.
Specific implementation mode
With reference to specific example and attached drawing, the present invention is described in detail.
Embodiment 1
Manufacture internal diameter be 10mm, the composite material helix tube that wall thickness is 0.5mm, as shown in Figure 1.
1, ABS or PLA engineering plastics helix tubes shaping female mold 1, mold outer diameter are quickly manufactured using 3D printing technique
Internal dendriform support is arranged, to ensure the shape type face precision of mold, mold in 12.5mm, wall thickness 0.75mm in print software
Release wax is applied to facilitate part removal in inner surface after the completion of printing.
2, it is laid with
As shown in Figure 3,4, laid successively on the aluminium alloy paving core bar 6 of a diameter of 7.8mm vacuum bag 5, airfelt 4,
There are hole isolation film 3, pipe-type woven set prepreg 2, extracts above-mentioned lay lamination entirety from paving core bar after the completion of lay；With one
The pipe-type woven set prepreg 2 for laying stack surface is entangled in the clean thin wire of root, one end, and the other end is passed through from molding die
And pull, so that the lamination after lay is entered inside shaping female mold, as shown in Fig. 2, then removing thin wire.
3, it is molded
The vacuum bagging skin of mould inside is cleaned out with acetone, vacuum bag is sealed in mold outer surface, connects vacuum pump,
And mould inside vacuum bag both ends is made to be communicated with air.It is removed after the intact molds and products of envelope are placed 12h at room temperature
Inside and out vacuum bag, internal airfelt, have hole isolation film, by ABS or PLA engineering plastics die failures, take out composite wood
Expect helix tube product.
Embodiment 2
Manufacture internal diameter be 30mm, the composite material helix tube that wall thickness is 1.5mm
1, ABS or PLA engineering plastics molding die 1, mold outer diameter 35mm, wall thickness are quickly manufactured using 3D printing technique
Internal dendriform support is arranged, including ensureing after the completion of the shape type face precision of mold, mold print in 1mm in print software
Surface applies release wax to facilitate part removal.
2, it is laid with
Laid successively on the aluminium alloy paving core bar of a diameter of 27.8mm vacuum bag 5, airfelt 4, have hole isolation film 3,
Pipe-type woven covers OOA prepregs 2, extracts above-mentioned lay lamination entirety from paving core bar after the completion of lay；It is clean with one
The pipe-type woven set prepreg 2 for laying stack surface is entangled in thin wire, one end, and the other end is passed through and pulled from molding die,
So that the lamination after lay is entered inside plastic mould, then removes thin wire.
3, the vacuum bagging skin of mould inside is cleaned out with acetone, seals vacuum bag in mold outer surface, connects vacuum
Pump, and mould inside vacuum bag both ends is made to be communicated with air.It is torn open after the intact molds and products of envelope are placed 12h at room temperature
Vacuum bag inside and out removing, has hole isolation film at internal airfelt, ABS or PLA engineering plastics die failures take out compound
Material helix tube product.
Embodiment 3
Manufacture internal diameter be 50mm, the composite material helix tube that wall thickness is 2.5mm
1, ABS or PLA engineering plastics molding die 1, mold outer diameter 58mm, wall thickness are quickly manufactured using 3D printing technique
Internal dendriform support is arranged in 1.5mm in print software, to ensure the shape type face precision of mold, after the completion of mold printing
Inner surface applies release wax to facilitate part removal.
2, it lays vacuum bag 5 successively on the aluminium alloy paving core bar of a diameter of 47.8mm, airfelt 4, have hole isolation film
3, pipe-type woven covers OOA prepregs 2, extracts above-mentioned lay lamination entirety from paving core bar after the completion of lay；It is clean with one
Thin wire, one end entangles the pipe-type woven set prepreg 2 for laying stack surface, and the other end passes through and drag from molding die
It draws, so that the lamination after lay is entered inside plastic mould, then remove thin wire.
3, the vacuum bagging skin of mould inside is cleaned out with acetone, seals vacuum bag in mold outer surface, connects vacuum
Pump, and mould inside vacuum bag both ends is made to be communicated with air.The intact molds and products of envelope are put into togerther in baking oven, will be dried
Case is heated to 80 DEG C and keeps the temperature 2h, baking oven removed after being cooled to 60 ° inside and out vacuum bag, internal airfelt, have hole isolation
ABS or PLA engineering plastics die failures are taken out composite material helix tube product by film.
Embodiment 4
Manufacture internal diameter be 100mm, the composite material helix tube that wall thickness is 5mm
1, ABS or PLA engineering plastics molding die 1, mold outer diameter 114mm, wall thickness are quickly manufactured using 3D printing technique
Internal dendriform support is arranged, including ensureing after the completion of the shape type face precision of mold, mold print in 2mm in print software
Surface applies release wax to facilitate part removal.
2, it lays vacuum bag 5 successively on the aluminium alloy paving core bar of a diameter of 97.8mm, airfelt 4, have hole isolation film
3, pipe-type woven covers OOA prepregs 2, extracts above-mentioned lay lamination entirety from paving core bar after the completion of lay；It is clean with one
Thin wire, one end entangles the pipe-type woven set prepreg 2 for laying stack surface, and the other end passes through and drag from molding die
It draws, so that the lamination after lay is entered inside plastic mould, then remove thin wire.
3, the vacuum bagging skin of mould inside is cleaned out with acetone, seals vacuum bag in mold outer surface, connects vacuum
Pump, and mould inside vacuum bag both ends is made to be communicated with air.The intact molds and products of envelope are put into togerther in baking oven, will be dried
Case is heated to 80 DEG C and keeps the temperature 2h, baking oven removed after being cooled to 60 ° inside and out vacuum bag, internal airfelt, have hole isolation
ABS or PLA engineering plastics die failures are taken out composite material helix tube product by film.
Unspecified part of the present invention is known to the skilled person technology.
Claims (7)
1. a kind of composite material spiral pipe shaping mould, it is characterised in that：Including helix tube shaping female mold and assistant formation mold,
The assistant formation mold includes paving core bar and spiral core bar；
The helix tube shaping female mold is helix, is formed using 3D printing, helix tube shaping female mold inner surface type face knot
Structure is consistent with the outer surface structure of composite material helix tube to be formed；
The paving core bar is cylindrical structure, the laying of the green body for composite material helix tube to be formed；
The spiral core bar is helical form, screws in the composite material helix tube green body to be formed being placed in helix tube shaping female mold
It is interior, so that green body is bonded with helix tube shaping female mold, helix core rod outer surface moulding surface structure and composite material helix tube to be formed
Green body moulding surface structure is consistent.
2. a kind of composite material spiral pipe shaping mould according to claim 1, it is characterised in that：The helix tube at
Type former is formed using engineering plastics 3D printing.
3. a kind of composite material helix tube moulding process, which is characterized in that realized by following steps：
The first step prepares helix tube shaping female mold,
Using 3D printing technique manufacture helix tube shaping female mold, helix tube shaping female mold inner surface moulding surface structure with it is to be formed compound
The outer surface structure of material helix tube is consistent；
Second step, the laying of composite material helix tube green body to be formed,
Lay vacuum bag material and pipe-type woven set prepreg successively on paving core bar, it is lamination is whole from paving after the completion of lay
It is extracted on patch core bar, obtains composite material helix tube green body to be formed；
Third walks, and second step, which is obtained composite material helix tube green body to be formed, is packed into the helix tube shaping female mold that the first step obtains
In；
4th step is screwed in inside composite material helix tube green body to be formed using spiral core bar, treats forming composite spiral
Pipe body pressurized so that composite material helix tube green body to be formed is bonded with helix tube shaping female mold, then by spiral core bar
It screws out；
5th step removes helix tube shaping female mold and molding auxiliary material after vacuum-bag process, obtains composite material helix tube.
4. a kind of composite material helix tube moulding process according to claim 3, it is characterised in that：The second step middle berth
Paste core bar outer diameter by composite material spiral pipe outside diameter to be formed, composite material spiral tube thickness, have hole be isolated film thickness, thoroughly
Gas felt thickness and vacuum bag thickness obtain.
5. a kind of composite material helix tube moulding process according to claim 3, it is characterised in that：Third step is with leading
Messenger is sleeved on green body one end of composite material helix tube to be formed, by the green body of composite material helix tube to be formed from helix tube at
Type former one end penetrates, and is pierced by from the other end, and the green body of composite material helix tube to be formed is made to enter in helix tube shaping female mold
Portion.
6. a kind of composite material helix tube moulding process according to claim 5, it is characterised in that：It is led in the third step
Thin wire or rope can be used in messenger.
7. composite material helix tube prepared by a kind of moulding process using described in claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810414015.0A CN108705785A (en) | 2018-05-03 | 2018-05-03 | Composite material spiral pipe, forming die and forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810414015.0A CN108705785A (en) | 2018-05-03 | 2018-05-03 | Composite material spiral pipe, forming die and forming process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108705785A true CN108705785A (en) | 2018-10-26 |
Family
ID=63867723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810414015.0A Pending CN108705785A (en) | 2018-05-03 | 2018-05-03 | Composite material spiral pipe, forming die and forming process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108705785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311730A (en) * | 2021-12-22 | 2022-04-12 | 长春长光宇航复合材料有限公司 | Composite material light shield, forming die and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563773A (en) * | 2004-03-16 | 2005-01-12 | 西北工业大学 | Shaped helix tube made of carbon-carbon composite material |
| CN103273665A (en) * | 2013-06-14 | 2013-09-04 | 沈阳飞机工业（集团）有限公司 | Forming technology of square pipe part made of composite material |
| CN103273604A (en) * | 2013-06-13 | 2013-09-04 | 沈阳飞机工业（集团）有限公司 | Curing and forming method of hollow structural member made of composite material |
| CN107160710A (en) * | 2017-07-25 | 2017-09-15 | 哈尔滨工业大学 | A kind of composite material rectangular section floating die assembly and the method that spring is prepared using the mould |
-
2018
- 2018-05-03 CN CN201810414015.0A patent/CN108705785A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563773A (en) * | 2004-03-16 | 2005-01-12 | 西北工业大学 | Shaped helix tube made of carbon-carbon composite material |
| CN103273604A (en) * | 2013-06-13 | 2013-09-04 | 沈阳飞机工业（集团）有限公司 | Curing and forming method of hollow structural member made of composite material |
| CN103273665A (en) * | 2013-06-14 | 2013-09-04 | 沈阳飞机工业（集团）有限公司 | Forming technology of square pipe part made of composite material |
| CN107160710A (en) * | 2017-07-25 | 2017-09-15 | 哈尔滨工业大学 | A kind of composite material rectangular section floating die assembly and the method that spring is prepared using the mould |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311730A (en) * | 2021-12-22 | 2022-04-12 | 长春长光宇航复合材料有限公司 | Composite material light shield, forming die and preparation method thereof |
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