CN109822933A - One kind being used for the molding magnetic field auxiliary pressurized method of composite structure - Google Patents
One kind being used for the molding magnetic field auxiliary pressurized method of composite structure Download PDFInfo
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- CN109822933A CN109822933A CN201910225155.8A CN201910225155A CN109822933A CN 109822933 A CN109822933 A CN 109822933A CN 201910225155 A CN201910225155 A CN 201910225155A CN 109822933 A CN109822933 A CN 109822933A
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Abstract
The invention belongs to composite structure field shaping techniques, provide one kind for the molding magnetic field auxiliary pressurized method of composite structure, are laid in magnetic powder are used in the molding hollow mold of composite structure first；Then magnetic field is set inside total, so that magnetic powder provides support force, reinforced structure to mold；After last material structure solidification to be composite, magnetic force is removed, mold reduces, demoulds to component, obtain more excellent performance of composite element.Magnetic powder is laid in the mold of hollow by this method, makes a kind of adjustable, mold with support force, convenient for controlling magnetic force after composite structure curing molding, simplifies releasing process.It compared with coming by using die hard to the molding conventional method of composite structure, the present invention be directed to labyrinth, does not need that demoulding mechanism specially is arranged, simplifies the design of mold, reduce forming cost.Certain possible ways are provided for the moulding process of labyrinth.
Description
Technical field
The present invention relates to one kind to be used for the molding magnetic field auxiliary pressurized method of composite structure, especially in contact moudling, mould
Has the booster action method in the techniques such as hot-forming and vacuum assisted resin infusion.
Background technique
The tool that composite material is made of on a macroscopic scale two or more material of different nature physics and chemical method
There is the material of excellent properties.Light material and light is combined by the sandwich structures such as ripple, dot matrix of fibre reinforced composites preparation
Structure, with lightweight, Gao Biqiang, Gao Bigang and inner open, perforation space be easily achieved collection carrying with thermal control, energy-absorbing,
The multifunctionality of energy storage is the structure-integrated high-performance component of typical material-.Sandwich be by upper and lower two pieces of panels and in
Between the three-dimensional structure that is formed by connecting of core, by changing the structure of core, sandwich structure has diversified form,
It has wide range of applications.Such as aircraft wing, empennage, fuselage, floor and body of a motor car, chassis
Composite material shaping process needs mold to guarantee construction profile size, while transmitting external pressure and improving composite material
Mechanical property, the technology of preparing of composite structure have mould heat pressure one-shaping technique, mould heat pressure secondary shaping tech, true
Empty assistant formation technology, contact moudling technology etc., these technologies can all cause when forming such as corrugated plating one kind labyrinth
Mould design and manufacture is complicated, not easy mold release, and Forming Quality is difficult to control, and is easy to appear boundary defect, geometric dimension defect etc., no
Easy integrated molding, while different molds is also needed when facing different size series configuration, lead at high cost, the production cycle
The problems such as time is elongated.These moulding techniques are difficult to meet the following growing high-performance complex component demand.
Summary of the invention
It is an object of the invention to the moulds designed when facing labyrinth for the moulding process of current composite structure
The problem of tool is not able to satisfy engine request, magnetic powder is added in proposition in mould cavity, utilizes the method for magnetic field auxiliary pressurized, root
Simplify die size design accuracy according to the controllable method of magnetic force, shortens the design cycle, to reduce the molding of composite structure
Cost.
Technical solution of the present invention:
One kind being used for the molding magnetic field auxiliary pressurized method of composite structure, and steps are as follows:
(1) magnetic powder is laid in inside the hollow mold of forming composite structure, the granular size of magnetic powder is uniformly, to be convenient for
Tiling, the quantity of magnetic powder is according to the size variation of mold；
(2) laying composite material face to be formed；
(3) magnetic field is applied by plate calutron around composite material to be formed, the magnetic line of force passes through composite material, and to multiple
Condensation material provides the support force of auxiliary；
Magnetic field is adjusted by changing the position of calutron；
(4) after forming, magnetic field is removed, completes demoulding.
Reinforcing fiber in the fiber-reinforced resin matrix compound material is glass fibre, carbon fiber, aramid fiber.
The resin is epoxy resin, unsaturated polyester resin, vinyl ester resin or bimaleimide resin.
The composite material process planning is low pressure contact moulding process, mould heat pressure moulding process, vacuum assisted resin infusion work
Skill.
Simplify mould using magnetic powder auxiliary pressurized the beneficial effects of the present invention are: proposing in a kind of composite structure forming process
Have the process of design, relative to traditional composite structure moulding technique, this method by composite material at
Magnetic powder is added in pattern tool, using magnetic field force, support mode simplifies die size design accuracy, simplifies knockout course, does not need
Especially special method demoulds, it is only necessary to remove magnetic field, simplifies process flow.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention；What N, S and arrow indicated is magnetic field and magnetic field line direction, under 1 molding
The mold of panel, 2 composite material corrugated plate lower panels, 3 composite material corrugated cores, 4 composite material corrugated plate top panels, 5 one-tenth
The mold of type top panel；The mold of 6-12 molding ripple core.
Fig. 2 is the single mold schematic diagram of the molding ripple core of one embodiment of the invention, and inner hollow core can fill magnetic powder, black
Point signal is exactly magnetic powder.By adding magnetic field, the position of magnetic powder in a mold changes, and provides contoured support to mold
Power.
Fig. 3 is one embodiment of the invention die assembly process schematic figure.
Fig. 4 one embodiment of the invention isometric view, is clear that the rear mold of molding and the group of composite structure
Conjunction form.
Specific embodiment
It is clearly and completely described below according to the technical solution of invention, it is clear that described embodiment is only portion of the present invention
Divide embodiment, instead of all the embodiments.Based on the embodiment in the invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, the range of the invention protection is belonged to.
It as shown in Figures 1 to 4, is structural schematic diagram of the invention.
A kind of composite material corrugated plate is selected to illustrate that specific technical process, specific embodiment are as follows:
Step 1: blanking: according to composite material fabric required for wanting molding composite material corrugated hardened structure to prepare.
Step 2: die treatment: smearing release agent to mold, and magnetic powder is packed into hollow corrugated core mould bottom.For not
The requirement that same release agent needs is different, it is proposed that places for a period of time after smearing, then coats release agent to mold again.
Step 3: the mold 1 of laying forming lower panel, the composite material corrugated plate lower panel 2 of laying, is then being answered on this basis
The mold 6-9 of molding ripple core, the last composite material corrugated core 3 of laying are sequentially placed on condensation material corrugated plating lower panel 2.
Detailed process is as shown in Figure 3.
The panel is non-metallic plates, composite panel, the plastic plate, rubber prepared such as fiber reinforcement high-molecular organic material
Offset plate etc..The mold can be multiple forming mold, and inner hollow core, interior support can be provided by placing magnetic powder in conjunction with magnetic force
The mold of power, in conjunction with the demand of design, targetedly provides supporting force to weak link, specifically in practical forming process
It is to be adjusted by the direction in magnetic field.
Step 4: being put into the mold 10-12 of molding ripple core after composite material corrugated core 3 is completed.Then laying composite wood
Expect corrugated plating top panel 4, places the mold 5 of molding top panel, pressurize to unitary mould, while magnetic field is set.Mold it
Schematic diagram afterwards is as shown in Figure 4.
Have magnetic magnetic powder, under the magnetic force, movement can be generated in mould inside, and due to the limitation of mold, can give
One support force of sandwich layer and panel plays in addition power suffered by integrally provided pressure, sandwich layer and panel can be concentrated more to wave
The effect that the place of stress weakness is supplemented in card.
Step 5: magnetic field is removed after to corrugated plating integrally curing, convenient for demoulding.
Magnetic field can use plate calutron, and for big configuration, large-sized composite material and complex configuration molding are difficult, easily cause
The problem of fault of construction, the method adjust holding power in the way of the auxiliary pressurized of magnetic field, and the demoulding for reducing labyrinth is difficult
Degree and manufacturing cost.
When demolished, magnetic field is first removed, then takes the mold 5 of molding top panel away, successively takes out molding ripple core
Mold 6-12.The mold 1 for finally taking molding lower panel away obtains complete composite material corrugated hardened structure.
As space is limited, the present invention is illustrated by ripple struction, has only write the mold 6-12 of molding ripple core.But ripple
Size can change, and be not limited to the mold of these molding ripple cores.It, can be by the magnetic in mold when demoulding
Powder is poured out, and realization recycles.
Claims (5)
1. one kind is used for the molding magnetic field auxiliary pressurized method of composite structure, which is characterized in that steps are as follows:
(1) magnetic powder is laid in inside the hollow mold of forming composite structure, the granular size of magnetic powder is uniformly, to be convenient for
Tiling, the quantity of magnetic powder is according to the size variation of mold；
(2) laying composite material face to be formed；
(3) magnetic field is applied by plate calutron around composite material to be formed, the magnetic line of force passes through composite material, and to multiple
Condensation material provides the support force of auxiliary；
(4) after forming, magnetic field is removed, completes demoulding.
2. auxiliary pressurized method in magnetic field according to claim 1, which is characterized in that by change calutron position come
Adjust magnetic field.
3. auxiliary pressurized method in magnetic field according to claim 1 or 2, which is characterized in that the composite material includes increasing
Strong fiber and resin；
The reinforcing fiber is glass fibre, carbon fiber and/or aramid fiber；
The resin is epoxy resin, unsaturated polyester resin, vinyl ester resin or bimaleimide resin.
4. auxiliary pressurized method in magnetic field according to claim 1 or 2, which is characterized in that the composite molding work
Skill is low pressure contact moulding process, mould heat pressure moulding process or vacuum assistant resin infused.
5. auxiliary pressurized method in magnetic field according to claim 3, which is characterized in that the composite material process planning is
Low pressure contact moulding process, mould heat pressure moulding process or vacuum assistant resin infused.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225155.8A CN109822933B (en) | 2019-03-25 | 2019-03-25 | Magnetic field auxiliary pressurizing method for composite material structure forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225155.8A CN109822933B (en) | 2019-03-25 | 2019-03-25 | Magnetic field auxiliary pressurizing method for composite material structure forming |
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| Publication Number | Publication Date |
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| CN109822933A true CN109822933A (en) | 2019-05-31 |
| CN109822933B CN109822933B (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910225155.8A Active CN109822933B (en) | 2019-03-25 | 2019-03-25 | Magnetic field auxiliary pressurizing method for composite material structure forming |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248464A (en) * | 2021-11-24 | 2022-03-29 | 威海光威复合材料股份有限公司 | Carbon fiber composite material forming device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0121919A2 (en) * | 1983-04-08 | 1984-10-17 | Siefried Henschke | Method of furnishing a construction element with a layer |
| US4675061A (en) * | 1985-09-24 | 1987-06-23 | Grumman Aerospace Corporation | Method for forming corrugated materials using memory metal cores |
| CN206780802U (en) * | 2017-05-31 | 2017-12-22 | 兰州城市学院 | A kind of carbon fiber forming magnetic case |
| CN206781058U (en) * | 2017-05-31 | 2017-12-22 | 兰州城市学院 | A kind of hand-operated magnetic fibrous composite shaped device |
| CN206780796U (en) * | 2017-05-31 | 2017-12-22 | 兰州城市学院 | A kind of adjustable electromagnetism carbon fibre composite shaped device |
-
2019
- 2019-03-25 CN CN201910225155.8A patent/CN109822933B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0121919A2 (en) * | 1983-04-08 | 1984-10-17 | Siefried Henschke | Method of furnishing a construction element with a layer |
| US4675061A (en) * | 1985-09-24 | 1987-06-23 | Grumman Aerospace Corporation | Method for forming corrugated materials using memory metal cores |
| CN206780802U (en) * | 2017-05-31 | 2017-12-22 | 兰州城市学院 | A kind of carbon fiber forming magnetic case |
| CN206781058U (en) * | 2017-05-31 | 2017-12-22 | 兰州城市学院 | A kind of hand-operated magnetic fibrous composite shaped device |
| CN206780796U (en) * | 2017-05-31 | 2017-12-22 | 兰州城市学院 | A kind of adjustable electromagnetism carbon fibre composite shaped device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248464A (en) * | 2021-11-24 | 2022-03-29 | 威海光威复合材料股份有限公司 | Carbon fiber composite material forming device and method |
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| CN109822933B (en) | 2020-09-11 |
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