CN109774199B - Forming method of carbon fiber composite rudder-shaped structure - Google Patents
Forming method of carbon fiber composite rudder-shaped structure Download PDFInfo
- Publication number
- CN109774199B CN109774199B CN201910044258.4A CN201910044258A CN109774199B CN 109774199 B CN109774199 B CN 109774199B CN 201910044258 A CN201910044258 A CN 201910044258A CN 109774199 B CN109774199 B CN 109774199B
- Authority
- CN
- China
- Prior art keywords
- mold
- skin
- forming
- carbon fiber
- stage
- 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.)
- Active
Links
Images
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a method for forming a carbon fiber composite rudder-shaped structure. The composite material consists of a carbon fiber skin, a foam core, end ribs on two sides and edge seals. Laying and shaping a layer on a preforming mold to manufacture a preformed body of the skin and the end rib, assembling the skin, the foam core and the end rib in the forming mold, finishing edge sealing and laying in the mold, and finally completing the manufacturing through the processes of mold closing, resin injection, curing, demolding and the like. The product obtained by the forming method has smooth two surfaces, good size precision, low energy consumption and low cost for forming, and realizes the integral manufacture and integral forming of the parts.
Description
Technical Field
The invention relates to the field of composite materials, in particular to a method for forming a carbon fiber composite material rudder-shaped structure.
Background
With the continual evolution of advanced technologies, new challenges are presented to the materials. In some advanced technical fields, the traditional metal materials cannot meet the requirements, and the appearance of a new generation of carbon fiber composite materials means that a new development direction appears in the technology. After the carbon fiber composite material is used for replacing the traditional material, the excellent specific strength and specific modulus performance are shown, the carbon fiber composite material has a changeable shape due to the strong design property, and the rudder is produced in various industries, and the traditional manufacturing process of the rudder is realized by forming and assembling various parts.
The product obtained by the forming method has smooth two surfaces, good size precision, low energy consumption and low cost for forming, and realizes the integral manufacture and integral forming of the parts. The manufacturing method has strong process independence, can be independently carried out and is beneficial to the mass production of products.
Disclosure of Invention
The invention provides a method for forming a carbon fiber composite rudder-shaped structure.
The solution of the invention is: a method for forming a carbon fiber composite rudder-shaped structure comprises a carbon fiber skin, a foam core, end ribs on two sides and edge seals, wherein the forming method comprises the steps of firstly manufacturing preformed bodies of the skin, the end ribs and the edge seals on a preformed mold, completing shaping, then assembling the foam core, the skin and the end rib preformed bodies in the forming mold, and finally completing the assembly of all the preformed bodies in the mold, and specifically comprises the following steps,
the method comprises the following steps: uniformly spreading a sizing agent on the surface of the carbon fiber fabric by using a machine, and then cutting the fabric into a specific shape by using a cutting machine;
step two: respectively paving and pasting fabrics prepared in sequence on the skin, the end ribs and the edge-sealed preforming molds;
step three: laying release cloth, packaging, making a bag, vacuumizing, preserving heat, and cooling to normal temperature under the condition of keeping vacuum;
step four: assembling the shaped skin, the end ribs, the edge sealing preformed body and the foam core in a forming die;
step five: closing the mold, detecting the air tightness of the mold, and injecting resin at a certain temperature;
step six: setting an oven, completing curing in two stages, keeping the injection pressure of the resin in the curing process of the first stage, removing the injection device after the first stage is finished, cleaning equipment, and performing curing of the second stage;
step seven: and after the solidification is finished, finally cooling to a certain temperature and demoulding.
The invention is further improved in that: in the second step, the skin, the end ribs and the edge sealing are separately manufactured on a specific preforming mold and finally assembled in the mold.
The invention is further improved in that: in the third step, the heat preservation temperature is 110-130 ℃, and the heat preservation time is 30-50 min.
The invention is further improved in that: in the fifth step, when the resin is injected, the resin is defoamed for 15min to 30min, negative pressure is kept in a mold cavity of the mold, the injection is started when the temperature of the mold reaches 40 ℃ to 50 ℃, and the injection pressure is 1bar to 3 bar.
The invention is further improved in that: in the sixth step, the technological conditions of the first stage and the second stage of curing are that the temperature is respectively kept for 180min at 70-90 ℃ and 120-140 ℃.
The invention has the beneficial effects that: 1. the invention provides a method for forming a carbon fiber composite rudder-shaped structure, which adopts a liquid forming process, so that a product can be integrally formed, the forming process is few, the forming period is short, the upper surface and the lower surface of the product are high in smoothness, and the shape and the size are high in precision, 2. the method utilizes the composite liquid forming process, compared with the traditional autoclave forming, the manufacturing cost is greatly reduced, but the product performance is similar, and the method has the advantages of wide market prospect, and 3. the method has independent processes, can be independently carried out, shortens the manufacturing period, and is beneficial to realizing the mass production of the product.
Drawings
FIG. 1 is a schematic view of a rudder-type structure of carbon fiber composite material
Wherein: 1-foam core, 2-end rib I, 3-skin, 4-edge sealing and 5-end rib II.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
A forming method of a carbon fiber composite rudder type structure is characterized in that: the structure comprises a carbon fiber skin 3, a foam core 1, a first end rib 2, a second end rib 5 and a sealing edge 4, wherein the first end rib, the second end rib and the sealing edge are arranged on two sides of the carbon fiber skin, the forming method comprises the steps of firstly manufacturing a preformed body of the skin and the end ribs on a preformed mold, finishing shaping, then assembling the foam core, the skin, the end ribs and the sealing edge preformed body in the forming mold, and finally finishing assembling a prefabricated body in the mold. The specific operation steps are as follows:
the method comprises the following steps: uniformly spreading a sizing agent on the surface of the carbon fiber fabric by using a machine, matching the sizing agent with a resin matrix component, and then cutting the fabric into a specific shape by using a cutting machine;
step two: respectively paving and pasting fabrics prepared in sequence on the skin, the end ribs and the edge-sealed preforming molds;
step three: laying release cloth, packaging and making bags, keeping the temperature at 120 ℃ for 40min in a vacuum-pumping state, cooling to normal temperature, and then cooling to normal temperature under vacuum;
step four: assembling the shaped skin, the end ribs, the edge sealing preformed body and the foam core in a forming die, wherein the skin and the end rib preformed die are matched with the actual size of the part, and the shaped preformed body is trimmed according to the actual size of the part;
step five: the upper mold and the lower mold are combined together, a sealing ring is placed on the molds to be matched, the airtightness of the molds is detected, the molds are placed in an oven, an injection machine and the molds are connected through a pipeline, the molds are heated to 45 ℃, meanwhile, prepared resin is poured into the injection machine and defoamed in vacuum for 20min, then a vacuum system is opened to keep the negative pressure in a mold cavity, and the injection machine is opened to inject the resin into the molds under the pressure of 2bar and a certain flow rate.
Step six: setting an oven, completing curing in two stages, keeping the injection state of the resin in the first-stage curing process, keeping the temperature for 180min at 80 ℃, removing the injection device and cleaning equipment after the first stage is finished, performing second-stage curing, and keeping the temperature for 180min at 130 ℃;
step seven: and after the solidification is finished, finally cooling to a certain temperature, demoulding and taking out the finished piece.
The beneficial effect of this embodiment is: 1. the embodiment provides a method for forming a carbon fiber composite rudder-shaped structure, which adopts a liquid forming process, so that a product can be integrally formed, the forming process is few, the forming period is short, the upper surface and the lower surface of the product are high in smoothness and high in shape and size precision, 2. the embodiment utilizes the liquid forming process of the composite material, compared with the traditional autoclave forming, the manufacturing cost is greatly reduced, but the product performance is similar, and the method has the advantage of wide market prospect, 3. the embodiment has independent processes, can be independently carried out, shortens the manufacturing period, and is beneficial to realizing the batch production of the product.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A forming method of a carbon fiber composite rudder type structure is characterized in that: the structure comprises a carbon fiber skin, a foam core, end ribs on two sides and edge seals, the forming method comprises the steps of firstly manufacturing preformed bodies of the skin, the end ribs and the edge seals on a specific preformed mold, finishing shaping, then assembling the preformed bodies of the foam core, the skin and the end ribs in the forming mold, and finally assembling all the preformed bodies in the mold,
the method comprises the following steps: uniformly spreading a sizing agent on the surface of the carbon fiber fabric by using a machine, and then cutting the fabric into a specific shape by using a cutting machine;
step two: respectively paving fabrics prepared in sequence on the skin and the pre-forming die of the end rib, manufacturing the skin, the end rib and the edge sealing on the prefabricated die, and finally assembling on the die;
step three: laying release cloth, packaging, making a bag, vacuumizing, preserving heat at 110-130 ℃ for 30-50 min, and cooling to normal temperature under vacuum;
step four: assembling the shaped skin, the end ribs, the edge sealing preformed body and the foam core in a forming die;
step five: closing the mold and detecting the air tightness of the mold, injecting resin at a certain temperature, defoaming the resin for 15-30 min when injecting the resin, keeping negative pressure in a mold cavity of the mold, starting injection when the temperature of the mold reaches 40-50 ℃, and enabling the injection pressure to be 1-3 bar;
step six: setting an oven, completing curing in two stages, keeping the injection pressure of the resin in the curing process of the first stage, removing the injection device after the first stage is finished, cleaning equipment, and performing curing of the second stage, wherein the process conditions of the curing of the first stage and the second stage are that the temperature is respectively kept for 180min at 70-90 ℃ and 120-140 ℃;
step seven: and after the solidification is finished, finally cooling to a certain temperature and demoulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044258.4A CN109774199B (en) | 2019-01-17 | 2019-01-17 | Forming method of carbon fiber composite rudder-shaped structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044258.4A CN109774199B (en) | 2019-01-17 | 2019-01-17 | Forming method of carbon fiber composite rudder-shaped structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109774199A CN109774199A (en) | 2019-05-21 |
| CN109774199B true CN109774199B (en) | 2021-07-13 |
Family
ID=66501585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910044258.4A Active CN109774199B (en) | 2019-01-17 | 2019-01-17 | Forming method of carbon fiber composite rudder-shaped structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109774199B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112238551B (en) * | 2020-09-27 | 2022-04-12 | 航天特种材料及工艺技术研究所 | Multi-part integrated forming assembly die and forming assembly method for composite wing |
| CN114103182B (en) * | 2021-11-03 | 2023-05-23 | 哈尔滨飞机工业集团有限责任公司 | Directional fiber reinforced cementing connection method |
| CN116141696A (en) * | 2022-12-14 | 2023-05-23 | 常州启赋安泰复合材料科技有限公司 | Method for manufacturing plane tail |
| CN116001322A (en) * | 2022-12-26 | 2023-04-25 | 江西洪都航空工业集团有限责任公司 | RTM forming tool and forming method for guide vane composite material part |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3873654A (en) * | 1973-03-05 | 1975-03-25 | Robert G Smith | Process of forming a rigid foam airfoil section |
| JP4095430B2 (en) * | 2002-12-25 | 2008-06-04 | 富士重工業株式会社 | Aircraft wing manufacturing method |
| US20120114897A1 (en) * | 2010-11-05 | 2012-05-10 | Ramesh Thiagarajan | Foam Stiffened Structure and Method of Making the Same |
| BR112014018031B1 (en) * | 2012-01-25 | 2020-12-01 | Safran | process and tool for making a propeller blade |
| CN106182801A (en) * | 2016-07-15 | 2016-12-07 | 西北工业大学 | A kind of aircraft foam core filled composite material rudder face forming method |
| CN106739004A (en) * | 2017-01-16 | 2017-05-31 | 江苏恒神股份有限公司 | The preparation method and gained Special-shaped I beam of carbon fibre composite Special-shaped I beam |
-
2019
- 2019-01-17 CN CN201910044258.4A patent/CN109774199B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109774199A (en) | 2019-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109774199B (en) | Forming method of carbon fiber composite rudder-shaped structure | |
| CN104589670B (en) | A kind of gas path design method of composite cavity structure air bag shaping | |
| CN112848389B (en) | Method for rapidly forming hybrid fiber reinforced thermoplastic composite structure | |
| CN107187020A (en) | A kind of fibre reinforced composites 3D printing assistant formation method | |
| CN106553357A (en) | Hollow multi-cavity abnormal shape surface composite material complex structural member integral forming technique | |
| CN102765198A (en) | Vacuum assisted molding system of composite and molding method of composite | |
| CN104494166A (en) | Air bag forming method of composite material part with T-shaped reinforced web structure | |
| CN101804684A (en) | In-mould decorating injection moulding method and mould | |
| CN104290337A (en) | Method for realization of co-cementing of reinforcing rib web composite produced part by accurate positioning soft tooling | |
| CN104369392A (en) | Method for manufacturing composite material component | |
| CN105690791A (en) | Barrel-shaped composite structural member overall molding method capable of achieving easy demolding | |
| CN104476782A (en) | Manufacturing process of propeller and large efficient blade propeller of fan | |
| CN109624355A (en) | High-performance VARI technological forming composite material goes out plastic structure and method | |
| CN113977984B (en) | Preparation method of tubular hyperboloid composite structural member | |
| CN109719971A (en) | A kind of mold and its upper male mould manufacturing method for vacuum infusion molding | |
| CN206106422U (en) | Novel vacuum bag shaping device | |
| CN110001085A (en) | A kind of multiple one mould of material radome fairing RTM technique, two chamber preparation method | |
| CN107696522A (en) | A kind of carbon fibre fabric method for forming parts at band R angles | |
| CN110877463A (en) | Low-cost forming method of V-shaped composite material part | |
| CN207224633U (en) | A kind of mould suitable for RTM shaping casing composite materials | |
| CN206484819U (en) | A kind of novel injection moulding machine mould | |
| CN102303410A (en) | Method for molding core and cavity of corner sealing element | |
| CN210309119U (en) | RTM (resin transfer molding) forming die for manufacturing three-dimensional textile composite material | |
| CN109719866A (en) | The molding die and forming method of negative draft part | |
| CN207465924U (en) | A kind of mold for vacuum infusion molding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |