CN112793050A - Integrated forming die and integrated forming method for pipeline containing membrane lining composite material - Google Patents
Integrated forming die and integrated forming method for pipeline containing membrane lining composite material Download PDFInfo
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- CN112793050A CN112793050A CN202110149565.6A CN202110149565A CN112793050A CN 112793050 A CN112793050 A CN 112793050A CN 202110149565 A CN202110149565 A CN 202110149565A CN 112793050 A CN112793050 A CN 112793050A
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- 239000002131 composite material Substances 0.000 title claims abstract description 60
- 239000012528 membrane Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 239000003292 glue Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
-
- 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
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- 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
- B29C33/20—Opening, closing or clamping
- B29C33/202—Clamping means operating on closed or nearly closed mould parts, the clamping means being independently movable of the opening or closing means
-
- 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
- B29C33/30—Mounting, exchanging or centering
- B29C33/303—Mounting, exchanging or centering centering mould parts or halves, e.g. during mounting
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- 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
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses an integrated forming die for a pipeline containing a film lining composite material and an integrated forming method, wherein the die comprises an upper die, a core die, a lower die, a barrel film and a fiber composite pipe body, the lower die is provided with a positioning pin and a first bolt hole, the upper die is provided with a positioning hole and a second bolt hole, the upper die and the lower die are aligned through the positioning pin and the positioning hole, the upper die and the lower die are connected and fixed through the first bolt hole and the second bolt hole through bolts, so that the die is locked, the core die is arranged in a cavity between the upper die and the lower die, and the barrel film and the fiber composite pipe body are sequentially sleeved on the surface of the core. The die provided by the invention can be used for molding the composite material pipeline, effectively solves the problem of high porosity of the composite material pipeline, and can also be used for molding the composite material pipeline containing the membrane lining, and the membrane lining and the pipeline are integrally molded without secondary processing.
Description
Technical Field
The invention belongs to the field of composite material pipeline forming, and particularly relates to an integrated forming die and an integrated forming method for a composite material pipeline containing a membrane lining.
Background
The traditional pipelines such as steel pipes, soil-concrete pipes, cast iron pipes and the like cannot meet the requirements of modern industrialization due to the defects of large weight, low strength, easy corrosion and the like, and fiber composite material pipelines such as oil pipelines, power pipelines, water supply and drainage pipelines and the like are widely applied due to the advantages of good durability, corrosion resistance, easy installation and the like. At present, two methods of pultrusion and winding are mainly used for producing fiber composite material pipelines, but the fiber composite material pipelines produced by the two methods have the problem of high porosity, are easy to leak liquid and gas when being used in certain special fields, cause safety accidents, need to carry out secondary treatment on the pipelines, and are time-consuming and labor-consuming.
In addition, when the pipeline needs to meet the requirements of wear resistance, acid and alkali resistance, corrosion resistance and the like, the lining is generally added inside the pipeline, and at present, two methods are mainly adopted for adding the lining: resin coating and adhesive cartridge film. The resin coating lining is formed by spraying resin on the inner part of the pipeline, and solidifying the resin on the inner wall of the pipeline in a rotating mode, a heating rotating mode and the like to form a resin protective layer. The lining of the cylinder film is formed by adhering a layer of cylinder film to the inside of the pipeline, and the thermoplastic or thermosetting cylinder film is adhered to the inner wall of the pipeline through self-curing or adhesive to form a protective layer.
No matter the coating or the bonding cylinder film, the pipeline needs to be processed for the second time, the construction cost is high, and the uniformity and the bonding integrity of the lining cannot be ensured under common construction conditions.
Disclosure of Invention
The invention aims to provide an integrated forming die for a composite material pipeline containing a membrane lining, which can be used for forming the composite material pipeline and effectively solving the problem of high porosity of the composite material pipeline, and can also be used for forming the composite material pipeline containing the membrane lining, and the membrane lining and the pipeline are integrally formed without secondary processing.
The second purpose of the invention is to provide a method for integrally forming a pipeline containing a film lining composite material, compared with the traditional winding and pultrusion pipeline manufacturing methods, the pipeline manufactured by the method has low porosity and better anti-seepage performance, and the pipeline is integrally formed without subsequent treatment.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a contain membrane lining combined material pipeline forming die, includes mould, mandrel, lower mould, section of thick bamboo membrane and the compound body of fibre, the lower mould is provided with locating pin and first bolt hole, it is provided with locating hole and second bolt hole to go up the mould, it passes through to go up mould and lower mould locating pin and locating hole position are aligned, and the bolt will go up mould and lower mould through first bolt hole and second bolt hole and connect fixedly, realizes the mould locking, the mandrel is arranged in go up the cavity between mould and the lower mould, the mandrel surface overlaps in proper order and is equipped with section of thick bamboo membrane and the compound body of fibre.
Preferably, the upper die is provided with a glue injection hole and an exhaust hole.
Preferably, the number of the glue injection holes and the number of the exhaust holes arranged on the upper die are respectively at least one.
Preferably, the contact portion of the upper and lower molds is mounted with a gasket.
Preferably, the surface of the core mold is coated with polytetrafluoroethylene.
Preferably, the two ends of the cavity of the upper die and the cavity of the lower die are respectively provided with a gasket.
Preferably, the gasket is semicircular, the outer diameter of the gasket is the same as the inner diameters of the upper die cavity and the lower die cavity, and the inner diameter of the gasket is the same as the outer diameter of the mandrel sleeve after the sleeve film is sleeved on the mandrel sleeve.
Preferably, the length of the cylinder film is greater than the length of the cavity of the upper die minus the width of the gaskets at the two ends.
Preferably, the length of the fiber composite pipe body is smaller than the length of the cavity of the upper die minus the width of the gaskets at the two ends.
The invention also provides a method for integrally forming the composite material pipeline containing the membrane liner, which is characterized in that the composite material pipeline containing the membrane liner is prepared by adopting the forming mould for the composite material pipeline containing the membrane liner;
firstly, sequentially sleeving a cylindrical film and a fiber composite pipe body on a core mold, and placing the core mold sleeved with the cylindrical film and the fiber composite pipe body in cavities of an upper mold and a lower mold; positioning the upper die and the lower die through positioning pins and positioning holes, and connecting and locking the upper die and the lower die through bolt holes by using bolts; and then injecting composite material resin from the glue injection hole, discharging air in the cavity from the exhaust hole, selecting heating or cooling treatment according to the type of the composite material resin, opening the mold after the resin is solidified and shaped, taking out the core mold, and simply treating the composite material pipeline to obtain the composite material pipeline containing the lining.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
compared with the traditional winding and pultrusion pipeline manufacturing methods, the pipeline manufactured by the mold has low porosity and better anti-seepage performance, and the pipeline is integrally molded without subsequent treatment.
In addition, in the invention, the pipe with the lining can be manufactured by one-step molding by directly adding the cylinder film on the core die for pipe molding and then injecting resin into the pipe, and the length of the lining is longer than the length of the fiber composite pipe body and longer than the length of the cavity of the upper film and the lower film after the widths of the linings at two ends are removed, so that the resin can be effectively prevented from entering the inside of the lining. The forming process is simple and convenient to operate, the problems that the thickness of the pipeline lining is not uniform, the adhesion is incomplete and the like are effectively solved, and the construction quality of the pipeline lining is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of an integrated molding mold for a pipe made of a composite material with a film lining according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a core mold according to an embodiment of the present invention;
FIG. 3 is a schematic view of a lower mold of an embodiment of the present invention;
FIG. 4 is a schematic top mold view of an embodiment of the present invention;
fig. 5 is a schematic view showing a state where the core mold is placed in the lower mold in the embodiment of the present invention.
Description of reference numerals: 1-core mould; 2-lower mould; 3, molding the die; 4-a cylindrical film; 5-a fiber composite pipe body; 21-a liner; 22-a first bolt hole; 23-a locating pin; 24-a gasket; 31-glue injection holes; 32-vent holes; 33-positioning holes; 34-second bolt hole.
Detailed Description
The present invention provides an integrated molding mold for a composite material pipe with a film lining and a method for integrally molding the composite material pipe with the film lining. Advantages and features of the present invention will become apparent from the following description and from the claims.
Referring to fig. 1-5, a pipe forming mold containing a film lining composite material comprises an upper mold 3, a core mold 1, a lower mold 2, a cylindrical film 4 and a fiber composite pipe body 5, wherein the upper mold 3 is provided with a glue injection hole 31 and an exhaust hole 32, the number of the glue injection hole 31 and the number of the exhaust hole 32 are respectively at least one, the lower mold 2 is provided with a positioning pin 23 and a first bolt hole 22, the upper mold 3 is provided with a positioning hole 33 and a second bolt hole 34, the upper mold 3 and the lower mold 2 are aligned through the positioning pin 23 and the positioning hole 33, the upper mold 3 and the lower mold 2 are connected and fixed through the first bolt hole 22 and the second bolt hole 34 by bolts, so that the mold is locked, the core mold 1 is arranged in a cavity between the upper mold 3 and the lower mold 2.
Go up mould 3 and lower mould 2 contact part and install sealed pad 24, guarantee the whole leakproofness of whole cavity after the locking except that injecting glue hole 31 and exhaust hole 32, prevent that resin from revealing after the injecting glue, the unable thorough discharge of cavity internal gas.
In order to make the composite material pipeline be separated from the core mould 1 more easily in the following process, the surface of the core mould 1 is provided with a polytetrafluoroethylene coating, and the surfaces of the cavities of the lower mould 2 and the upper mould 3 can also be coated with a release agent.
The two ends of the cavity of the upper die 3 and the cavity of the lower die 2 are respectively provided with a gasket 21, and the two ends of the core die 1 are arranged on the gaskets 21. The gasket 21 is semicircular, the outer diameter of the gasket 21 is the same as the inner diameters of the cavity of the upper die 3 and the cavity of the lower die 2, the inner diameter of the gasket 21 is the same as the outer diameter of the core die 1 after the sleeve film 4 is sleeved on the sleeve film, and the gasket 21 is of a replaceable structure and can replace the gasket 21 with different inner diameters according to the change of the outer diameter of the core die 1. The length of the cylinder film 4 is larger than the length of the cavity of the upper die 3 after the width of the gaskets 21 at the two ends is removed. The length of the fiber composite pipe body 5 is less than the length of the cavity of the upper die 3 minus the width of the gaskets 21 at the two ends.
A method for integrally forming a composite material pipeline containing a film lining comprises the steps of preparing the composite material pipeline containing the film lining by adopting the forming die for the composite material pipeline containing the film lining;
firstly, a cylindrical film 4 and a fiber composite pipe body 5 are sequentially sleeved on a core mold 1, the core mold 1 sleeved with the cylindrical film 4 and the fiber composite pipe body 5 is placed in cavities of an upper mold 3 and a lower mold 2, and two ends of the core mold 1 are correspondingly placed on liners 21 at two ends of the lower mold 2; positioning the upper die 3 with the lower die 2 through the positioning pin 23 and the positioning hole 33, and connecting and locking the upper die 3 with the lower die 2 through a bolt hole by using a bolt; and then injecting composite material resin from the injection holes 31, discharging air in the cavity from the exhaust holes 32, stopping injecting the resin after the cavity is filled with the resin, finally, heating or cooling the mold according to the curing characteristic of the composite material resin, opening the mold after the resin is cured and molded, taking out the core mold 1, and simply treating the composite material pipeline to obtain the composite material pipeline containing the lining.
In this example, a pipe having a length of 200cm, an outer diameter of 20cm and an inner diameter of 19cm was prepared. The length of the corresponding die cavity of the lower die 2 and the upper die 3 is 220cm, the inner diameter of the die cavity is 20cm, the width of the liner 21 in the die cavity is 9cm, the length of the cylinder film 4 is 210cm, and the length of the fiber composite pipe body 5 is 200 cm.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. The utility model provides a contain membrane lining combined material pipeline integrated into one piece mould, its characterized in that, includes mould, mandrel, lower mould, section of thick bamboo membrane and the compound body of fibre, the lower mould is provided with locating pin and first bolt hole, it is provided with locating hole and second bolt hole to go up the mould, it passes through to go up mould and lower mould locating pin and locating hole position are aligned, and the bolt will go up mould and lower mould through first bolt hole and second bolt hole and connect fixedly, realizes the mould locking, the mandrel is arranged in go up the cavity between mould and the lower mould, the mandrel surface overlaps in proper order and is equipped with section of thick bamboo membrane and the compound body of fibre.
2. The mold for integrally molding the composite material pipe with the film lining as claimed in claim 1, wherein the upper mold is provided with a glue injection hole and an exhaust hole.
3. The mold for integrally molding the pipe made of the film-lined composite material according to claim 2, wherein the upper mold is provided with at least one injection hole and at least one exhaust hole.
4. The mold for integrally molding a pipe made of a composite material containing a film lining according to claim 1, wherein a gasket is attached to a contact portion of the upper mold and the lower mold.
5. The integrated forming die for the composite material pipe with the film lining as claimed in claim 1, wherein the surface of the core die is coated with polytetrafluoroethylene.
6. The mold for integrally molding the pipeline made of the composite material with the film lining as claimed in claim 1, wherein two ends of the cavity of the upper mold and the cavity of the lower mold are respectively provided with a gasket.
7. The mold for integrally molding the composite pipe with the film lining as claimed in claim 6, wherein the liner has a semicircular shape, the outer diameter of the liner is the same as the inner diameter of the upper and lower mold cavities, and the inner diameter of the liner is the same as the outer diameter of the mandrel after the tubular film is sleeved on the mandrel.
8. The mold of claim 6, wherein the length of the tubular film is greater than the length of the cavity of the upper mold minus the width of the liners at the two ends.
9. The mold of claim 6, wherein the length of the fiber composite pipe is less than the cavity length of the upper mold minus the width of the gaskets at the two ends.
10. A method for integrally forming a composite material pipeline containing a membrane liner, which is characterized in that the composite material pipeline containing the membrane liner is prepared by adopting the composite material pipeline forming die containing the membrane liner according to any one of claims 1 to 9;
firstly, sequentially sleeving a cylindrical film and a fiber composite pipe body on a core mold, and placing the core mold sleeved with the cylindrical film and the fiber composite pipe body in cavities of an upper mold and a lower mold; positioning the upper die and the lower die through positioning pins and positioning holes, and connecting and locking the upper die and the lower die through bolt holes by using bolts; and then injecting composite material resin from the glue injection hole, discharging air in the cavity from the exhaust hole, and finally heating or cooling to cure and shape the resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110149565.6A CN112793050A (en) | 2021-02-03 | 2021-02-03 | Integrated forming die and integrated forming method for pipeline containing membrane lining composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110149565.6A CN112793050A (en) | 2021-02-03 | 2021-02-03 | Integrated forming die and integrated forming method for pipeline containing membrane lining composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112793050A true CN112793050A (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110149565.6A Pending CN112793050A (en) | 2021-02-03 | 2021-02-03 | Integrated forming die and integrated forming method for pipeline containing membrane lining composite material |
Country Status (1)
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| CN (1) | CN112793050A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113442465A (en) * | 2021-06-28 | 2021-09-28 | 哈尔滨工业大学 | Forming device and method for preparing composite material rod by utilizing thermoplastic prepreg tape |
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| CN105150559A (en) * | 2015-10-15 | 2015-12-16 | 东莞泰合复合材料有限公司 | RTM forming process for hollow composite material products and forming mold used in RTM forming process |
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| CN107443772A (en) * | 2017-07-26 | 2017-12-08 | 南京航空航天大学 | A kind of mould and its process suitable for composite tube RTM shapings |
| CN111688235A (en) * | 2018-01-22 | 2020-09-22 | 林欢 | Preparation method of glass fiber reinforced plastic pipeline |
| CN214645137U (en) * | 2021-02-03 | 2021-11-09 | 上海自图新材料科技有限公司 | Integrated forming die for pipeline containing film lining composite material |
-
2021
- 2021-02-03 CN CN202110149565.6A patent/CN112793050A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08323870A (en) * | 1995-05-31 | 1996-12-10 | Toyota Autom Loom Works Ltd | Molding die for fiber-reinforced composite material |
| JP2005289067A (en) * | 2004-03-12 | 2005-10-20 | Maruei Kako Kk | Fiber reinforced plastic cylindrical molding and its manufacturing process |
| CN102756484A (en) * | 2011-04-29 | 2012-10-31 | 江南大学 | Design and preparation of mold for pipy composite materials suitable for RTM (resin transfer molding) process |
| CN102490372A (en) * | 2011-12-12 | 2012-06-13 | 中国科学院宁波材料技术与工程研究所 | Method for forming carbon fiber pipe and die thereof |
| CN105150559A (en) * | 2015-10-15 | 2015-12-16 | 东莞泰合复合材料有限公司 | RTM forming process for hollow composite material products and forming mold used in RTM forming process |
| CN105398064A (en) * | 2015-11-30 | 2016-03-16 | 南京航空航天大学 | Integral molding method and molding die for fiber-reinforced resin-based composite round pipe |
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| CN107443772A (en) * | 2017-07-26 | 2017-12-08 | 南京航空航天大学 | A kind of mould and its process suitable for composite tube RTM shapings |
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| CN214645137U (en) * | 2021-02-03 | 2021-11-09 | 上海自图新材料科技有限公司 | Integrated forming die for pipeline containing film lining composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113442465A (en) * | 2021-06-28 | 2021-09-28 | 哈尔滨工业大学 | Forming device and method for preparing composite material rod by utilizing thermoplastic prepreg tape |
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