CN112046036B - Method for manufacturing composite material ejection support arm - Google Patents
Method for manufacturing composite material ejection support arm Download PDFInfo
- Publication number
- CN112046036B CN112046036B CN202010808183.5A CN202010808183A CN112046036B CN 112046036 B CN112046036 B CN 112046036B CN 202010808183 A CN202010808183 A CN 202010808183A CN 112046036 B CN112046036 B CN 112046036B
- Authority
- CN
- China
- Prior art keywords
- support arm
- prefabricated body
- heating
- ejection support
- filling block
- 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 11
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 239000004744 fabric Substances 0.000 claims abstract description 17
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 11
- 239000004917 carbon fiber Substances 0.000 claims abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 10
- 239000006260 foam Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims abstract description 6
- 238000003754 machining Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 238000001721 transfer moulding Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 239000002344 surface layer Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 6
- 238000009966 trimming Methods 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims 2
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229920006934 PMI Polymers 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920007790 polymethacrylimide foam Polymers 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
-
- 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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
- B29C70/683—Pretreatment of the preformed part, e.g. insert
-
- 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
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7502—Supports, machine frames or beds, worktables
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a method for manufacturing a composite material ejection support arm, and belongs to the field of composite material manufacturing. Firstly, respectively laying a filling block and a round pipe on a preforming die by using carbon fiber fabrics, heating, pressurizing, preforming, taking out for later use, then laying the carbon fiber fabrics on a C-shaped beam according to a given molded surface and area of a foam block, vacuumizing, heating and pre-compacting to obtain a prefabricated body a, putting the round pipe, the filling block and the prefabricated body a into the preforming die together for heating and forming, bonding all parts together by using a forming agent on the fabrics to obtain a prefabricated body b, and taking out the prefabricated body b after cooling; and paving a skin layer fabric on the surface layer by layer to prepare a catapult support arm prefabricated body, then placing the catapult support arm prefabricated body into an RTM (resin transfer molding) mold for glue injection and curing molding to obtain a catapult support arm blank, and finally preparing the catapult support arm component through machining.
Description
Technical Field
The invention relates to the field of composite material manufacturing, in particular to a method for manufacturing a composite material ejection support arm.
Background
As is known, the ejection support arm is one of main components in an airborne embedded missile hanging frame, and mainly plays a role in supporting and ejecting during missile launching so as to instantly send a missile out of a missile silo. The traditional ejection support arm is mostly of metal structures such as aluminum alloy and magnesium alloy, is influenced by the properties of the process and the material, and has the problems of heavy weight, low bearing efficiency, corrosion resistance and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the manufacturing method of the composite material ejection support arm, which has the advantages of light weight, high structural efficiency, high strength, corrosion resistance and the like, compared with an aluminum alloy structure, the weight can be reduced by 30-40%, and the mounting efficiency, the corrosion resistance and the comprehensive performance of a warplane are improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a manufacturing method of a composite material ejection support arm is characterized in that a filling block and a round tube are respectively laid on a preforming die by using carbon fiber fabrics, the filling block and the round tube are taken out for standby after heating, pressurizing and presetting, then the carbon fiber fabrics are laid on a C-shaped beam according to a given molding surface and area of a foam block and are vacuumized, heated and precompacted to obtain a prefabricated body a, the round tube, the filling block and the prefabricated body a are together placed in the presetting die for heating and setting, all parts are bonded together by a setting agent on the fabrics to obtain a prefabricated body b, and the prefabricated body b is taken out after cooling; and paving a skin layer fabric on the surface layer by layer to prepare a catapult support arm prefabricated body, then placing the catapult support arm prefabricated body into an RTM (resin transfer molding) mold for glue injection and curing molding to obtain a catapult support arm blank, and finally preparing the catapult support arm component through machining.
The aluminum alloy structure has the advantages of light weight, high structural efficiency, high strength, corrosion resistance and the like, can reduce the weight by 30-40% compared with an aluminum alloy structure, and improves the mounting efficiency, the corrosion resistance and the comprehensive performance of warplanes.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Figure 1 is an exploded view of the ejection arm structure of the present invention.
FIG. 2 is a view of a preform b.
Fig. 3 is a structural outline view of the ejection arm.
In the figure, 1 is a round pipe, 2 is a filling block, 3 is a skin, 4 is a C-shaped beam, and 5 is a foam block.
Detailed Description
As shown in the figure, the carbon fiber fabric skin 3 is used for coating prefabricated parts of the foam block 5, the filling block 2, the C-shaped beam 4 and the circular tube 1 together, glue is injected and cured through an RTM (resin transfer molding) process to obtain a blank of the ejection support arm, and in order to ensure the matching precision of all dimensions, the ejection support arm component is finally prepared through machining.
The production steps of the invention are as follows:
firstly, laying carbon fiber fabrics with a setting agent in a circular tube and a filling block pre-forming die respectively, and performing pre-setting by vacuumizing and heating at 90 ℃ for 10-15 min in the laying process; finally obtaining a prefabricated body of a round pipe and a filling block for later use.
Secondly, paving and pasting the foam block according to the design of the C-shaped beam, wherein 3-5 layers of the foam block are paved and pasted for one time, heating, vacuumizing and pre-compacting are carried out, the heating temperature is 90 ℃, and the vacuumizing time is 10-15 min; finally, a preform a is obtained.
And thirdly, putting the round pipe, the filling block and the prefabricated body a into a pre-setting mold together for heating and setting, bonding all the parts together through a setting agent on the fabric to obtain a prefabricated body b, and cooling and taking out the prefabricated body b.
Fourthly, trimming the prefabricated body b, removing redundant broken filaments and material edges, then performing skin layering, wherein the skin is mainly layered at 50% of +/-45 degrees, 30% of 0-degree and 20% of 90-degree, and performing heating, vacuumizing and pre-compacting once for 3-5 layers of the skin, the heating temperature is 90 ℃, and the vacuumizing time is 10-15 min; finally, the ejection support arm preform is manufactured.
And fifthly, placing the ejection support arm preform into a mold cavity of an RTM mold for mold closing, and injecting glue, heating and curing after detecting good airtightness.
And sixthly, demolding and finishing the solidified ejection support arm blank, and machining to obtain the ejection support arm.
The reinforced material in the embodiment of the invention takes a carbon fiber composite material as an example, but is not limited to carbon fiber, glass fiber, aramid fiber and other composite materials, and the sandwich material selected in the filling area is PMI foam, but is not limited to PMI, PVC and other sandwich materials. The chosen processes are, but not limited to, molding processes and RTM processes.
Claims (1)
1. A manufacturing method of a composite material ejection support arm is characterized in that a filling block and a round tube are respectively laid on a preforming die by using carbon fiber fabrics, the filling block and the round tube are taken out for standby after heating, pressurizing and presetting, then the carbon fiber fabrics are laid on a C-shaped beam according to a given molding surface and area of a foam block and are vacuumized, heated and precompacted to obtain a prefabricated body a, the round tube, the filling block and the prefabricated body a are together placed in the presetting die for heating and setting, all parts are bonded together by a setting agent on the fabrics to obtain a prefabricated body b, and the prefabricated body b is taken out after cooling; laying a skin layer fabric on the surface layer by layer to prepare an ejection support arm prefabricated body, then placing the ejection support arm prefabricated body into an RTM (resin transfer molding) mold for glue injection and curing molding to obtain an ejection support arm blank, and finally preparing an ejection support arm component through machining; specifically, in the first step, carbon fiber fabrics with sizing agents are laid in a round pipe and a filling block pre-forming die respectively, and pre-sizing is carried out by vacuumizing and heating in the laying process, wherein the heating temperature is 90 ℃, and the vacuumizing time is 10-15 min; finally obtaining a prefabricated body of a round pipe and a filling block for later use; secondly, paving and pasting the foam block according to the design of the C-shaped beam, wherein 3-5 layers of the foam block are paved and pasted for one time, heating, vacuumizing and pre-compacting are carried out, the heating temperature is 90 ℃, and the vacuumizing time is 10-15 min; finally, preparing a prefabricated body a; thirdly, putting the round pipe, the filling block and the prefabricated body a into a pre-setting mold together for heating and setting, bonding all the parts together through a setting agent on the fabric to obtain a prefabricated body b, and cooling and taking out the prefabricated body b; fourthly, trimming the prefabricated body b, removing redundant broken filaments and material edges, then performing skin layering, wherein the skin is mainly layered at 50% of +/-45 degrees, 30% of 0-degree and 20% of 90-degree, and performing heating, vacuumizing and pre-compacting once for 3-5 layers of the skin, the heating temperature is 90 ℃, and the vacuumizing time is 10-15 min; finally, a catapult support arm prefabricated body is manufactured; fifthly, placing the ejection support arm preform into a mold cavity of an RTM mold for mold closing, and injecting glue, heating and curing after detecting good airtightness; and sixthly, demolding and finishing the solidified ejection support arm blank, and machining to obtain the ejection support arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010808183.5A CN112046036B (en) | 2020-08-12 | 2020-08-12 | Method for manufacturing composite material ejection support arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010808183.5A CN112046036B (en) | 2020-08-12 | 2020-08-12 | Method for manufacturing composite material ejection support arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112046036A CN112046036A (en) | 2020-12-08 |
| CN112046036B true CN112046036B (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010808183.5A Active CN112046036B (en) | 2020-08-12 | 2020-08-12 | Method for manufacturing composite material ejection support arm |
Country Status (1)
| Country | Link |
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| CN (1) | CN112046036B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696507A (en) * | 2021-08-31 | 2021-11-26 | 江苏帝威新材料科技发展有限公司 | Fiber preform manufacturing method and liquid forming process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005051624A2 (en) * | 2003-11-27 | 2005-06-09 | Conchur O'bradaigh | A machinery link member |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109367071B (en) * | 2018-12-04 | 2020-09-29 | 山东光威碳纤维产业技术研究院有限公司 | Production method of fiber reinforced composite ejection push arm |
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- 2020-08-12 CN CN202010808183.5A patent/CN112046036B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005051624A2 (en) * | 2003-11-27 | 2005-06-09 | Conchur O'bradaigh | A machinery link member |
Non-Patent Citations (1)
| Title |
|---|
| "推臂用碳纤维复合材料性能分析与工艺研究";张云露 等;《新技术新工艺》;20180531(第5期);第11-15页 * |
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| CN112046036A (en) | 2020-12-08 |
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