CN104325636A - Vacuum bag forming and manufacturing method of nitrile rubber metal adhesion elements - Google Patents
Vacuum bag forming and manufacturing method of nitrile rubber metal adhesion elements Download PDFInfo
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- CN104325636A CN104325636A CN201410624587.3A CN201410624587A CN104325636A CN 104325636 A CN104325636 A CN 104325636A CN 201410624587 A CN201410624587 A CN 201410624587A CN 104325636 A CN104325636 A CN 104325636A
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Abstract
The invention relates to the field of aero-engine rubber metal adhesion and provides a vacuum bag forming and manufacturing method of nitrile rubber metal adhesion elements. A nitrile rubber adhesive tape is adhered on a lubricating oil tank bracket by vacuum bag pressurization, the vacuum bag pressurization process is as follows: lofting, cutting and feeding, paving a ventilated felt, adhering a sealing adhesive tape, sealing a vacuum bag film, installing and connecting a vacuum device, vacuumizing, checking the vacuum degree and curing in an oven. According to the invention, gluing process and pressurization(fixture, vacuum) forming process are tested, the vacuum bag method low pressure forming technology is applied to nitrile rubber metal adhesion elements, and the gluing process and the vacuum bag forming process are compared to determine corresponding process parameters and finally solve the phenomenon of non-uniform adhesion quality.
Description
Technical field
The present invention relates to aero-engine bonding of rubber to metal field, be specially a kind of acrylonitrile-butadiene rubber metal adhesive part vacuum-bag process manufacture method.
Background technology
Bonding is a know-how in rubber process.Along with the development of novel synthetic adhesive material and adhesive bonding method, adhesion technique is also more and more extensive in the application of each industrial department.
The bonding of rubber mainly contains hard rubber method, copper-plating method, adhesive method (comprising cement-dipping method) and direct Method for bonding four kinds at present.Adhesive method is current a kind of the most frequently used method, the rubber not easily bonded and rubber and rubber and other material can be combined by securely, and the adhesive of function admirable can be obtained, solve hard rubber method, the insurmountable problem of copper-plating method, be widely used in adhesion technique.
Bonding can be divided into heat viscosity method and cold bonding legal.Heat viscosity method be make rubber in heat cure process with corrupt split, cold bonding is legal is utilize adhesive to make vulcanizate and corrupt split.Support belongs to cold cure bonding, and vulcanized butadiene nitrile rubber is relative with metal cold adhesion technique simple, and the suitable adhesive trade mark is more, process is relative maturity also, but there is conventional brace extrusion forming technology, bonding quality hand-manipulated cannot be consistent, and working (machining) efficiency is low.Introducing the low pressure molding technology of composite, to be suitable for sulfurized nitrile rubber metal adhesive part shaping, and be not suitable for vulcanised fluororubbers with metal adhesive part is shaping, the adhesive trade mark be suitable for is less, and process is not yet ripe, awaits test and gropes.
Summary of the invention
The object of the present invention is to provide a kind of acrylonitrile-butadiene rubber metal adhesive part vacuum-bag process manufacture method, fundamentally solve the support in current aero-engine, bonding quality hand-manipulated that clip class sulfurized nitrile rubber metal adhesive part conventional brace pressure method brings is inconsistent, clamping efficiency is low, the defects such as fixture demand is large, finally realize through engineering approaches application.
Technical scheme of the present invention is:
A kind of acrylonitrile-butadiene rubber metal adhesive part vacuum-bag process manufacture method, vacuum bag is adopted to pressurize acrylonitrile-butadiene rubber adhesive tape bonding on oil tank support, vacuum bag pressing technology flow process: setting-out → cutting blanking → paving airfelt → subsides sealant tape → envelope vacuum bag film → install also connects vacuum plant → vacuumize → check vacuum → curing oven, and concrete steps are as follows:
(1) setting-out: according to the version at processing bond position to be exerted pressure, carry out setting-out to vacuum bag film, must arrange vacuum tube by headspace, and keep vacuum bag film edge and part to keep the distance of 100mm ~ 200mm;
(2) cutting blanking: according to the result of setting-out and bond version, respectively blanking is carried out to vacuum bag film and airfelt, cut out required size;
(3) spread airfelt: in the bond surface airfelt that cuts of layer overlay, ensure that oil tank support is not damaged vacuum bag film;
(4) sealant tape is pasted: by the vacuum bag film doubling cut, post sealant tape along three faces, and sealing label two limits, reserve a limit, make bag-shape, burst sealant tape grows 3mm ~ 5mm;
(5) vacuum bag film is sealed: in vacuum bag film, stay two osculums, put into vacuum valve respectively, ensure that vacuum tube extend into the middle part on bond surface, seal up the last item limit with sealant tape;
(6) install and connect vacuum plant: first vacuum meter being connected a vacuum valve, then another vacuum valve is connected vacuum tube one end, the vacuum tube other end and vavuum pump connect;
(7) vacuumize: open vavuum pump, vacuumize, vacuum pressing 1 ~ 5min;
(8) check vacuum: after vacuum pressing 1 ~ 5min, check air-tightness, observe the state of sealing part, if the pressure indication of vacuum meter is greater than-90kPa, the chatter of air-flow can be heard simultaneously at sealing part, show that this place leaks gas, close pump immediately, with sealant tape, air-leak section is sealed;
(9) curing oven: when the pressure indication of vacuum meter remain on be less than-90kPa stablize time, unlatching baking oven is heating and curing, curing process parameter: 140 ~ 150 DEG C of heating 50 ~ 100min, vavuum pump one direct-open, until after solidification terminates, close baking oven and vacuum-pump power supply.
Design philosophy of the present invention is:
The adhesion process of rubber and metal mainly contains Treatment of Metal Surface, coating technique, extrusion forming are solidified.According to theory analysis, the main cause causing bonding quality inconsistent is: Treatment of Metal Surface, coating technique and extrusion forming curing are improper.Especially coating technique and cure under pressure method, the most important thing is that rubberization thickness pass and baking temperature, time and pressurization (fixture, vacuum) method directly affect quality of item.Therefore, emphasis of the present invention is tested for coating technique and pressurization (fixture, vacuum) moulding process, innovative point is that vacuum bag molding low pressure molding technology is applied to acrylonitrile-butadiene rubber metal adhesive part, to coating technique and vacuum-bag process process, carry out contrast test determination corresponding process parameters, the phenomenon that final solution bonding quality is inconsistent.Its process is: the rubber surface of bond is spread airfelt and put into rubber clamp or directly load vacuum bag film and seal, then be connected with vavuum pump with conduit by ozzle, after trying to take out and not finding obvious gas leak phenomenon, whole device is put into baking oven and heats.Its construction process is fairly simple, and each surface of irregular workpiece can be made to be subject to uniform thrust, is not easy to produce unsticking, and cure under pressure quality is high.
Advantage of the present invention and beneficial effect are:
1, the present invention and traditional rubber are compared with metallic framework (oil tank support) cold-adhesion technology, do not need special tooling, as long as set up vacuum bag system just can pressurize, not by the restriction of product structure, especially simple structure bond, bonding pressure uniformity, adhesive strength is stablized, and effectively reduces the mass defect such as delamination, bubble.After carrying out similar part application at the scene, effect is fine, performance and in stable condition.
2, technique of the present invention has broad application prospects and promotional value.This technique is scientific research and testing room and middle and small scale production production of units high-quality bonded part, provides reliable guarantee, can be generalized to the adhesion-molded technology of other similar rubber products.
3, vacuum bag condensation technique has been widely used in composite material low pressure forming technique, rubber-metal composite members is applied and still belongs to the first.The product bonding quality of employing vacuum bag pressurization new technology, new technology processing is better than plain clamp bonding quality, and time processing batch is large, and province's de-chucking manufacture, has saved cost.The present invention expands other vulcanized rubber and metal-to-metal adhesive fitting field vacuum-bag process technique, the application on aero-engine rubber-metal composite members bonding field.
Accompanying drawing explanation
Figure l is acrylonitrile-butadiene rubber adhesive tape of the present invention schematic diagram bonding with oil tank support.In figure, 1 rubber adhesive tape; 2 oil tank supports.
Detailed description of the invention
Below by embodiment and accompanying drawing, the present invention is described in more detail.
As shown in Figure 1, the present embodiment adopts vacuum bag pressurization to be adhered on oil tank support 2 by acrylonitrile-butadiene rubber adhesive tape 1, the trade mark of acrylonitrile-butadiene rubber adhesive tape 1 is acrylonitrile-butadiene rubber 5860, and the trade mark of oil tank support is ZGCr17Ni2, and acrylonitrile-butadiene rubber metal adhesive part vacuum-bag process manufacture method is specific as follows:
1, equipment, instrument and auxiliary material
Vavuum pump (model: XD-40); Vacuum valve (model: Vac Valve 401C, 1/4 " hickey), quantity: 2; Vacuum meter (model: AQD500TF, 1/4 " hickey); Reinforced hose (model: Airflow 65R, 10 '/root); Snap joint (model: Vac Gauge 30,1/4 " hickey), quantity: 2; Vacuum bag film (model: L500Y 0.003 " × 80 " × 500CF); Airfelt (model: Airweave N1080 " × 50 YDS); Sealant tape (specification: 1/8 " × 1/2 " × 50 '); Scissors; Electric drying oven with forced convection.
2, vacuum bag pressing technology flow process: setting-out → cutting blanking → paving airfelt → subsides sealant tape → envelope vacuum bag film → install also connects vacuum plant → vacuumize → check vacuum → curing oven.
3, vacuum bag pressurized operation step:
(1) setting-out: according to the version at processing bond position to be exerted pressure, carry out setting-out to vacuum bag film, must reserve certain space and arrange vacuum tube, and keep vacuum bag film edge and part to keep the distance of 100mm ~ 200mm.
(2) cutting blanking: according to the result of setting-out and bond version, respectively blanking is carried out to vacuum bag film and airfelt, cut out required size.
(3) spread airfelt: in the bond surface airfelt that cuts of layer overlay, ensure that oil tank support is not damaged vacuum bag film.
(4) sealant tape is pasted: by the vacuum bag film doubling cut, post sealant tape along three faces, and sealing label two limits, reserve a limit, make bag-shape, burst sealant tape grows 3mm ~ 5mm.
(5) vacuum bag film is sealed: in vacuum bag film, stay two osculums, put into vacuum valve respectively, ensure that vacuum tube extend into the middle part on bond surface, seal up the last item limit with sealant tape.
(6) install and connect vacuum plant: first vacuum meter being connected a vacuum valve, then another vacuum valve is connected vacuum tube (reinforced hose) one end, the vacuum tube other end and vavuum pump connect.
(7) vacuumize: open vavuum pump, vacuumize, vacuum pressing 1min.
(8) check vacuum: after vacuum pressing 1min, check air-tightness, observe the state of sealing part, if the pressure indication of vacuum meter is greater than-90kPa, the chatter of air-flow can be heard simultaneously at sealing part, show that this place leaks gas, pump should be closed immediately, with sealant tape, air-leak section be sealed.
(9) curing oven: when the pressure indication of vacuum meter remain on be less than-90kPa (relative vacuum degree-0.06 ~-0.08MPa) stablize time, unlatching baking oven is heating and curing, curing process parameter: 143 DEG C of heating 60min, vavuum pump one direct-open, until after solidification terminates, close baking oven and vacuum-pump power supply.
Embodiment result shows, the present invention adopts vacuum bag molding low pressure molding technology, vacuum bag molding utilizes the atmosphere negative pressure vacuumizing generation to pressurize to goods, is suitable for sulfurized nitrile rubber and metal composite part that clamping force is less than 0.09MPa (0.06 ~ 0.08MPa).For vacuum bag molding and conventional brace contrast test, achieve the application of (support, clip etc.) in simple structure rubber-metal composite members of vacuum-bag process technology, and include conclusion (of pressure testing) in technical papers, and extend in other similar-type products.Through practice, this process program is feasible, application success in acrylonitrile-butadiene rubber and metal-to-metal adhesive fitting are produced, and during trial-production, adhesive strength and bond area meet standard-required, and it is considerable for being generalized to other rubber-metal cold bonding fitting projected economic benefits.
Claims (1)
1. an acrylonitrile-butadiene rubber metal adhesive part vacuum-bag process manufacture method, it is characterized in that, vacuum bag is adopted to pressurize acrylonitrile-butadiene rubber adhesive tape bonding on oil tank support, vacuum bag pressing technology flow process: setting-out → cutting blanking → paving airfelt → subsides sealant tape → envelope vacuum bag film → install also connects vacuum plant → vacuumize → check vacuum → curing oven, and concrete steps are as follows:
(1) setting-out: according to the version at processing bond position to be exerted pressure, carry out setting-out to vacuum bag film, must arrange vacuum tube by headspace, and keep vacuum bag film edge and part to keep the distance of 100mm ~ 200mm;
(2) cutting blanking: according to the result of setting-out and bond version, respectively blanking is carried out to vacuum bag film and airfelt, cut out required size;
(3) spread airfelt: in the bond surface airfelt that cuts of layer overlay, ensure that oil tank support is not damaged vacuum bag film;
(4) sealant tape is pasted: by the vacuum bag film doubling cut, post sealant tape along three faces, and sealing label two limits, reserve a limit, make bag-shape, burst sealant tape grows 3mm ~ 5mm;
(5) vacuum bag film is sealed: in vacuum bag film, stay two osculums, put into vacuum valve respectively, ensure that vacuum tube extend into the middle part on bond surface, seal up the last item limit with sealant tape;
(6) install and connect vacuum plant: first vacuum meter being connected a vacuum valve, then another vacuum valve is connected vacuum tube one end, the vacuum tube other end and vavuum pump connect;
(7) vacuumize: open vavuum pump, vacuumize, vacuum pressing 1 ~ 5min;
(8) check vacuum: after vacuum pressing 1 ~ 5min, check air-tightness, observe the state of sealing part, if the pressure indication of vacuum meter is greater than-90kPa, the chatter of air-flow can be heard simultaneously at sealing part, show that this place leaks gas, close pump immediately, with sealant tape, air-leak section is sealed;
(9) curing oven: when the pressure indication of vacuum meter remain on be less than-90kPa stablize time, unlatching baking oven is heating and curing, curing process parameter: 140 ~ 150 DEG C of heating 50 ~ 100min, vavuum pump one direct-open, until after solidification terminates, close baking oven and vacuum-pump power supply.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540405A (en) * | 2018-11-07 | 2019-03-29 | 昌河飞机工业（集团）有限责任公司 | A kind of composite material shaping mould gas leakage test method |
| CN111037927A (en) * | 2019-11-11 | 2020-04-21 | 湖北三江航天江河化工科技有限公司 | Polishing-free sealing method for heat insulation layer of composite shell of solid rocket engine |
| CN111551449A (en) * | 2020-05-15 | 2020-08-18 | 沈阳飞机工业（集团）有限公司 | Fixing device for shear strength test sample and using method |
| CN115584213A (en) * | 2022-09-30 | 2023-01-10 | 成都飞机工业（集团）有限责任公司 | Bonding method of nonmetal cabin door and rubber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111037927A (en) * | 2019-11-11 | 2020-04-21 | 湖北三江航天江河化工科技有限公司 | Polishing-free sealing method for heat insulation layer of composite shell of solid rocket engine |
| CN111551449A (en) * | 2020-05-15 | 2020-08-18 | 沈阳飞机工业（集团）有限公司 | Fixing device for shear strength test sample and using method |
| CN115584213A (en) * | 2022-09-30 | 2023-01-10 | 成都飞机工业（集团）有限责任公司 | Bonding method of nonmetal cabin door and rubber |
| CN115584213B (en) * | 2022-09-30 | 2024-03-15 | 成都飞机工业（集团）有限责任公司 | Method for bonding nonmetallic cabin door and rubber |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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