CN104494166A - Air bag forming method of composite material part with T-shaped reinforced web structure - Google Patents
Air bag forming method of composite material part with T-shaped reinforced web structure Download PDFInfo
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- CN104494166A CN104494166A CN201410715374.1A CN201410715374A CN104494166A CN 104494166 A CN104494166 A CN 104494166A CN 201410715374 A CN201410715374 A CN 201410715374A CN 104494166 A CN104494166 A CN 104494166A
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- air bag
- frock
- composite material
- mould
- bogusware
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- 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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides an air bag forming method of a composite material part with a T-shaped reinforced web structure. The method comprises the steps of mounting a metal frame part in an air bag forming mold, laying up an air bag tooling on the surface of a cavity formed by the metal frame part and the air bag forming mold, sealing the outer layer of the air bag forming mold by a vacuum bag in a vacuum manner, forming the air bag tooling in an autoclave, and obtaining the composite material part with the T-shaped reinforced web structure by use of the molded air bag tooling. According to the method, pressure applied to the autoclave can be uniformly and accurately transferred, the thickness tolerance phenomenon during manufacturing of the composite material can be avoided, and the thermal lag effect of the T-shaped rib part can be avoided, therefore, the forming quality of a product can be effectively ensured, the qualified rate and the production efficiency are improved, the molded surface of the product has high quality, and the production cost and the manufacturing cycle can be effectively reduced.
Description
Technical field
The present invention relates to advanced composite material manufacturing technology field, particularly a kind of air bag forming method of T-shaped reinforcement web structure composite material parts.
Background technology
Resin-based carbon fiber composite has specific strength, specific stiffness is high, designability is strong, and fatigue crack-resistant performance is good, corrosion-resistant, the performance that good stability of the dimension etc. are superior applies high performance structures material very widely in the fields such as current Aeronautics and Astronautics, traffic.In multiple molding carbon fiber composite material technique, autoclave technique has forming temperature and pressure uniform, part for different materials, profile, size and structure has good adaptability, thus becomes one of major processes of research and manufacture Aero-Space high-quality composite element.
Along with the raising day by day to composite material parts intensity, rigidity requirement, the structure of part also becomes increasingly complex, and the web wherein with unidirectional T-shaped reinforcement or vertically and transversely cross-linking T-shaped reinforcement is one of typical structure part.For the T-shaped reinforcement web of design of part relative complex, not only comprise T-shaped muscle in length and breadth and strengthen structure, simultaneously on web with thickened area and lightening core, when manufacturing this kind of part, spacing between T-shaped reinforcement, and reinforcement requires usually stricter with the relative position degree of web.
Mostly use the shaping this kind of part of core method in current technique, core material is generally mould steel or aluminium alloy.The effect of core is that the pressure and temperature of autoclave is passed to composite product, makes product shaping at high temperature under high pressure, and the rigidity of core can ensure that the appearance and size of T-shaped muscle meets designing requirement simultaneously.
Use the shortcoming of core to mainly contain following three aspects: (1) has certain rigidity due to core self, be just difficult to accomplish by core conduction ambient pressure all accurately even, easily cause product T-shaped muscle segment thickness overproof; (2) because core has certain thickness, according to heat-conduction effect, the heating rate of product T-shaped muscle part can be more delayed than other parts, thus affect the inside Forming Quality of product; (3) because core is metal material, deadweight is comparatively large, and it is very inconvenient to operate.The simultaneously manufacture of metal core and maintenance cost higher, reprocess or the heavy fresh processed manufacturing cycle longer.
Summary of the invention
The object of the invention is for prior art Problems existing, a kind of air bag forming method of T-shaped reinforcement web structure composite material parts is provided.
To achieve these goals, the present invention is by the following technical solutions: a kind of air bag forming method of T-shaped reinforcement web structure composite material parts, comprises the following steps:
(1) by the method for machine-building, process one and the on all four metal bogusware of composite product appearance and size, metal bogusware is arranged in air bag mould, described air bag mould has upper cover plate, side board and base plate, there is assembly relation between metal bogusware and air bag mould, each baffle plate of mould all can play position-limiting action to metal bogusware simultaneously;
(2) in the cavity surface paving air bag frock that metal bogusware and air bag mould are formed, in the vacuum bag vacuum seal of the skin of air bag mould, enter autoclave molding air bag frock, solidifying pressure is 600 ~ 650kPa, solidification temperature 180 DEG C ± 6 DEG C, hardening time 120min;
(3) air bag frock shaping after, remove vacuum bag, take out metal bogusware, paving web part prepreg on base plate, T-shaped muscle partial prepreg is filled into after pre-compacted the relevant position of air bag frock, then by air bag frock and base plate matched moulds, enter autoclave molding, namely obtain composite product.
Described air bag frock comprises two-layer rubber layer and is coated on the carbon fiber prepreg enhancement layer in rubber layer.
The number of plies of the described carbon fiber prepreg enhancement layer be coated in rubber layer is 1 ~ 5 layer.
The upper cover plate of described air bag mould is evenly provided with pore, after paving air bag frock, the valve communicated with the external world is installed at described pore place.
Described air bag frock is entering autoclave, when pressure reaches 140kPa, is communicated with by vacuum bag with air, and keeps connected state until solidified.
Beneficial effect of the present invention:
(1) compared with conventional core mold forming method, air bag frock evenly, accurately can transmit autoclave applied pressure, avoids composite product to occur the phenomenon that thickness is overproof;
(2) air bag frock wall thickness is thinner, can avoid the thermo-lag effect at T-shaped muscle position, and above 2 Forming Quality that effectively can ensure product, improve the qualification rate and efficiency of producing;
(3) air bag frock is due to the existence of fibre reinforced layer, and integral rigidity is comparatively large, can realize product entirety and carry out the operation such as paving, pre-compacted in air bag frock, ensure that the relative positional accuracy of the shaping rear T-shaped muscle of product and web;
(4) air bag frock is based on rubber, and surface has elasticity, plays the effect of an equal pressure pad simultaneously, and product shaping rear surface quality is better;
(5) air bag frock can be reused, and again manufactures also more for convenience, effectively reduces production cost and manufacturing cycle.
Accompanying drawing explanation
Fig. 1 is the schematic diagram be fixed on by metal bogusware in air bag mould.
Fig. 2 is the schematic diagram after paving air bag frock.
Fig. 3 is after being packed into T-shaped muscle prepreg, by the schematic diagram of air bag frock and die bottom plate matched moulds.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Carried out the rubber pneumatic bag frock of shaping fiber enhancing by metal die, after air bag frock is shaping, make it have certain structural rigidity by reinforcing means, finally use air bag frock to complete the forming process of T-shaped muscle strengthening web structural fabrication in length and breadth.Detailed process is as follows:
(1) by the method for machine-building, process one and the on all four metal bogusware of composite product appearance and size, metal bogusware is arranged in air bag mould, described air bag mould has upper cover plate, side board and base plate, there is assembly relation (see figure 1) between metal bogusware and air bag mould, each baffle plate of mould all can play position-limiting action to metal bogusware simultaneously.
(2) in the cavity surface paving air bag frock that metal bogusware and air bag mould are formed.Air bag frock take rubber as main material, by rubber layer paving in cavity, in the middle of rubber layer, want paving carbon fiber prepreg as enhancement layer, to improve the integral rigidity of air bag frock, the number of plies of paving rubber and prepreg depends primarily on size and the complex structure degree of composite product, and the number of plies of general carbon fiber prepreg enhancement layer is 1 ~ 5 layer.Finally seal vacuum bag processed, and according to the curing process of rubber, in high-temperature and high-pressure conditions compacted under air bag frock, and fibre reinforced layer also solidifies simultaneously, the rigidity of raising air bag frock.The solidifying pressure of autoclave is 600 ~ 650kPa, solidification temperature 180 DEG C ± 6 DEG C, hardening time 120min.And after air bag frock enters autoclave, when pressure reaches 140kPa, vacuum bag is communicated with air, and keeps connected state until solidified.
The upper cover plate of air bag mould is evenly provided with pore, after paving air bag frock, the valve communicated is installed at pore place, sees Fig. 2 with the external world.
(3) air bag frock shaping after, the part as mould is participated in the manufacture process of composite product.First T-shaped muscle partial prepreg is filled into after pre-compacted completes the relevant position of air bag frock; And web part prepreg, can first paving on die bottom plate, then by air bag frock and die bottom plate matched moulds, enter autoclave molding composite product, see Fig. 3.After product is shaping, surrounding baffle plate is removed successively, then air bag frock is separated with composite product and namely completes the demoulding.According to the difference using materials and process, air bag frock can be reused for several times to tens of times, if air bag frock is damaged or distortion, metal bogusware and mould can be used again to manufacture air bag frock.
The above is only preferred embodiment of the present invention, not does any type of restriction to the present invention.Every above embodiment is done according to techniques and methods essence of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of techniques and methods scheme of the present invention.
Claims (5)
1. an air bag forming method for T-shaped reinforcement web structure composite material parts, is characterized in that comprising the following steps:
(1) by the method for machine-building, process one and the on all four metal bogusware of composite product appearance and size, metal bogusware is arranged in air bag mould, described air bag mould has upper cover plate, side board and base plate, there is assembly relation between metal bogusware and air bag mould, each baffle plate of mould all can play position-limiting action to metal bogusware simultaneously;
(2) in the cavity surface paving air bag frock that metal bogusware and air bag mould are formed, in the vacuum bag vacuum seal of the skin of air bag mould, enter autoclave molding air bag frock, solidifying pressure is 600 ~ 650kPa, solidification temperature 180 DEG C ± 6 DEG C, hardening time 120min;
(3) air bag frock shaping after, remove vacuum bag, take out metal bogusware, paving web part prepreg on base plate, T-shaped muscle partial prepreg is filled into after pre-compacted the relevant position of air bag frock, then by air bag frock and base plate matched moulds, enter autoclave molding, namely obtain composite product.
2. the air bag forming method of T-shaped reinforcement web structure composite material parts according to claim 1, is characterized in that: described air bag frock comprises two-layer rubber layer and is coated on the carbon fiber prepreg enhancement layer in rubber layer.
3. the air bag forming method of T-shaped reinforcement web structure composite material parts according to claim 2, is characterized in that: described in the number of plies of carbon fiber prepreg enhancement layer that is coated in rubber layer be 1 ~ 5 layer.
4. the air bag forming method of T-shaped reinforcement web structure composite material parts according to claim 1, it is characterized in that: the upper cover plate of described air bag mould is evenly provided with pore, after paving air bag frock, the valve communicated with the external world is installed at described pore place.
5. the air bag forming method of T-shaped reinforcement web structure composite material parts according to claim 1, it is characterized in that: described air bag frock is entering autoclave, when pressure reaches 140kPa, vacuum bag is communicated with air, and keeps connected state until solidified.
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| CN201410715374.1A CN104494166A (en) | 2014-12-02 | 2014-12-02 | Air bag forming method of composite material part with T-shaped reinforced web structure |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105082565A (en) * | 2015-09-15 | 2015-11-25 | 沈阳飞机工业（集团）有限公司 | Automatic lay-up forming method of I-shaped beam made from composite materials |
| CN106426984A (en) * | 2016-10-11 | 2017-02-22 | 中国航空工业集团公司基础技术研究院 | Packaging method for rubber air bag and vacuum bag sealing |
| CN107089019A (en) * | 2017-06-19 | 2017-08-25 | 沈阳飞机工业（集团）有限公司 | A kind of air bag being molded available for composite Ω stringers co-curing |
| CN107139514A (en) * | 2017-04-27 | 2017-09-08 | 沈阳飞机工业（集团）有限公司 | A kind of manufacture method of air bag aided composite Material Stiffened Panel |
| CN107839254A (en) * | 2017-11-21 | 2018-03-27 | 江苏美龙航空部件有限公司 | A kind of preparation method and mould of glass fibre bend pipe |
| CN109016559A (en) * | 2018-07-06 | 2018-12-18 | 江西洪都航空工业集团有限责任公司 | One kind being used for the molding method of the U-shaped beam of composite material |
| CN109367054A (en) * | 2018-11-07 | 2019-02-22 | 昌河飞机工业（集团）有限责任公司 | A kind of forming method of the narrow chamber shape tube beam class composite element of heavy wall |
| CN109765098A (en) * | 2019-01-15 | 2019-05-17 | 哈尔滨经纬复合新材料工程有限公司 | A kind of flexible high pressure utricule system application of uniform stress |
| CN109795136A (en) * | 2017-11-16 | 2019-05-24 | 航天海鹰(镇江)特种材料有限公司 | A kind of method that open type air bag realizes the elongated thin-walled structural I-beam composite product of large scale |
| CN110815853A (en) * | 2019-11-26 | 2020-02-21 | 航天海鹰(镇江)特种材料有限公司 | Forming method and application of air bag die for forming composite J-shaped beam |
| CN111040163A (en) * | 2019-11-29 | 2020-04-21 | 航天特种材料及工艺技术研究所 | Bismaleimide resin, air bag for autoclave molding and preparation method thereof |
| CN111688238A (en) * | 2020-05-27 | 2020-09-22 | 长春三友智造科技发展有限公司 | Method for forming thermosetting polymer fiber composite material part |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105082565A (en) * | 2015-09-15 | 2015-11-25 | 沈阳飞机工业（集团）有限公司 | Automatic lay-up forming method of I-shaped beam made from composite materials |
| CN106426984A (en) * | 2016-10-11 | 2017-02-22 | 中国航空工业集团公司基础技术研究院 | Packaging method for rubber air bag and vacuum bag sealing |
| CN107139514B (en) * | 2017-04-27 | 2019-11-15 | 沈阳飞机工业（集团）有限公司 | A kind of manufacturing method of air bag aided composite Material Stiffened Panel |
| CN107139514A (en) * | 2017-04-27 | 2017-09-08 | 沈阳飞机工业（集团）有限公司 | A kind of manufacture method of air bag aided composite Material Stiffened Panel |
| CN107089019A (en) * | 2017-06-19 | 2017-08-25 | 沈阳飞机工业（集团）有限公司 | A kind of air bag being molded available for composite Ω stringers co-curing |
| CN109795136A (en) * | 2017-11-16 | 2019-05-24 | 航天海鹰(镇江)特种材料有限公司 | A kind of method that open type air bag realizes the elongated thin-walled structural I-beam composite product of large scale |
| CN107839254A (en) * | 2017-11-21 | 2018-03-27 | 江苏美龙航空部件有限公司 | A kind of preparation method and mould of glass fibre bend pipe |
| CN109016559A (en) * | 2018-07-06 | 2018-12-18 | 江西洪都航空工业集团有限责任公司 | One kind being used for the molding method of the U-shaped beam of composite material |
| CN109367054A (en) * | 2018-11-07 | 2019-02-22 | 昌河飞机工业（集团）有限责任公司 | A kind of forming method of the narrow chamber shape tube beam class composite element of heavy wall |
| CN109765098A (en) * | 2019-01-15 | 2019-05-17 | 哈尔滨经纬复合新材料工程有限公司 | A kind of flexible high pressure utricule system application of uniform stress |
| CN110815853A (en) * | 2019-11-26 | 2020-02-21 | 航天海鹰(镇江)特种材料有限公司 | Forming method and application of air bag die for forming composite J-shaped beam |
| CN111040163A (en) * | 2019-11-29 | 2020-04-21 | 航天特种材料及工艺技术研究所 | Bismaleimide resin, air bag for autoclave molding and preparation method thereof |
| CN111688238A (en) * | 2020-05-27 | 2020-09-22 | 长春三友智造科技发展有限公司 | Method for forming thermosetting polymer fiber composite material part |
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