CN205477401U - Resistant carbon fiber reinforcement combined material continuous sucker rod that grinds partially and preparation facilities thereof - Google Patents
Resistant carbon fiber reinforcement combined material continuous sucker rod that grinds partially and preparation facilities thereof Download PDFInfo
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- CN205477401U CN205477401U CN201620149783.4U CN201620149783U CN205477401U CN 205477401 U CN205477401 U CN 205477401U CN 201620149783 U CN201620149783 U CN 201620149783U CN 205477401 U CN205477401 U CN 205477401U
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Abstract
The utility model relates to a resistant carbon fiber reinforcement combined material continuous sucker rod that grinds partially and preparation facilities thereof. Mainly by constituteing along the body of rod axial carbon fiber reinforcement layer, high -modulus glass fiber winding layer, along the wear -resisting high -modulus glass fiber enhancement layer three -layer of body of rod axial, the inlayer adopt continuous acrylonitrile base carbon fiber along the body of rod axial carbon fiber reinforcement layer, high -modulus glass fiber winding layer is high -modulus glass fiber winding layer, follows the wear -resisting high -modulus glass fiber enhancement layer of body of rod axial and is wear -resisting high -modulus glass fiber, the resin base member is polyfunctional group epoxy resin system, beneficial effect is: the utility model discloses a sucker rod has increased winding layer, inside ripple struction, and curing molding of three layer construction has increased the area of contact between carbon fiber and the glass fiber, has improved cohesion between the layer, and layering when the body of rod of having avoided concentric circle structure to result in reverses between the different reinforced materials has increased radially and axial compressive strength simultaneously, has reduced crooked diameter.
Description
Technical field
This utility model relates to a kind of petroleum industry oil production equipment and preparation facilities, particularly to a kind of carbon fibre reinforced composite of resistance to eccentric wear coiled rod and preparation facilities thereof.
Background technology
Owing to the Oil Reservoir Types of exploitation becomes increasingly complex, being continuously increased of well depth deteriorates with the continuous of well ore deposit environment simultaneously, and corrosion and eccentric wear problem become oil extraction in oil field technique problem demanding prompt solution.Because possessing the corrosion resistant feature of high-strength light, so composite sucker rod has started to progressively replace traditional metal sucker rod.The composite sucker rod used at present mainly includes glass fiber reinforced plastic oil pumping rod and the big class of carbon fibre reinforced composite coiled rod two.Glass fiber reinforced plastic oil pumping rod uses the pultrude process one-shot forming of glass-fiber reinforced thermo-setting resin to prepare, have been widely used, but along with the reliability requirement of modern times oil recovery improves constantly, glass fiber reinforced plastic oil pumping rod can not meet requirement, be primarily present problems with, 1, the resistance to eccentric wear of sucker rod bad；2, fatigue strength is inadequate；3, the equal fixed length of glass fiber reinforced plastic oil pumping rod, two ends are respectively arranged with a metal joint, use the metal box cupling of metal pumping rod application to be attached between root and root, and owing to structure is complicated, difficulty of processing is big, expensive.Each glass fiber reinforced plastic oil pumping rod two metal joints, the cost of the two metal joint are far above the cost of a fiberglass body of rod；Additionally compared with conventional metals sucker rod, except shank portion has changed material, other parts of whole rod string there is no change, conventional metals rod string joint is many, disconnected de-probability is high, and piston effect is obvious, and the box cupling problem serious with oil pipe eccentric wear does not have been resolved.Chinese patent CN1417449 discloses the preparation method of a kind of Anti-wear oil pumping rod, the method is the anti-abrading block of the material such as secondary injection molding nylon in type sucker rod body, reduce the covering material used, reduce cladding cost and process complexity continuously, but it is less that it is molded anti-abrading block size, relatively independent is distributed in the body of rod, often occurs anti-abrading block to depart from the body of rod, " sugarcoated haws on a stick " phenomenon occurs.It addition, its body of rod fixed length, it is impossible to solving conventional metals rod connector many, break-off accident rate is big, the defects such as piston effect is big；And installing anti-bias abrading block additional on the less body of rod of size is to solve the eccentric wear problem between metal joint and box cupling and oil pipe, and this be only sucker rod, pipe eccentric wear needs the emphasis that solves.CN101396874 discloses preparation method and the device of a kind of eccentric abrasion prevention composite sucker rod, its preparation method is on the in type composite sucker rod body of rod, utilize the eccentric abrasion prevention layer impregnating the abrasion resistant fibrous continuous-winding forming spiral bar shapes such as the aramid fiber of resin adhesive liquid, High molecular weight polyethylene, to reach eccentric abrasion prevention effect.The eccentric abrasion prevention layer of its spiral bar shape, owing to being with abrasion resistant fibrous enhancing thermosetting resin, thus while fiber has antiwear characteristic, but after forming composite with thermosetting resin, its wear resistance decrease is a lot, and the life-span can not extend how many.In addition to it eccentric abrasion prevention layer possessing spiral bar shape, its shortcoming is as common glass fiber reinforced plastic oil pumping rod.Chinese patent CN1461870 discloses a kind of carbon fibre reinforced composite coiled rod and preparation method, employing carbon fiber is reinforcing material, and formed integral coating be combined by transversely arranged aramid fiber or superhigh molecular weight polyethylene fibers bundle and longitudinal glass fibre, mainly solve to strengthen the horizontal interlaminar shear strength of sucker rod, thus avoid sucker rod that the problem of longitudinal splitting occurs in oil well, also improve resistance to eccentric wear and the intensity of the body of rod simultaneously.But this sucker rod uses pultrusion, an integral processing method (including putting silk-resin pickup glue-clad cladding-preforming-solidification-coiling operation) of cladding, clad is that fabric strengthens thermosetting resin, not only increase material cost, and the resistance to eccentric wear of fabric clad is not ideal enough.Additionally, owing to this carbon fibre reinforced composite coiled rod cross sectional shape is rectangle or ellipse, and its thickness only has 3～5mm, when application specific equipment removes well operations, the material of retained part almost cannot select, and two-piece type can only be used to clamp, left and right directions cannot be spacing, it is easy to occurs the body of rod to deflect away from the phenomenon of retained part.Therefore its special implement retained part structure and developing material difficulty of going into the well is relatively big, becomes the technical bottleneck in the application of carbon fibre reinforced composite coiled rod, limits this product large-scale promotion application.The problems such as utility model patent CN200910272324.X discloses a kind of coiled rod, uses unidirectional reinforcing fiber pultrusion, the method for coating thermoplastic wearing layer, and it is poor that its structure exists radial compressive property, and take-up diameter is big, operation difficulty.
Summary of the invention
The purpose of this utility model is aiming at the drawbacks described above that prior art exists, it is provided that a kind of carbon fibre reinforced composite of resistance to eccentric wear coiled rod and preparation facilities thereof.
The one carbon fibre reinforced composite of the resistance to eccentric wear coiled rod that this utility model is mentioned, main by the fibre reinforced layer (A) axial along the body of rod, high-modulus glass fiber winding layer (B), along axial wear-resisting high-modulus glass fiber enhancement layer (C) up of three layers of the body of rod, the fibre reinforced layer (A) axial along the body of rod of internal layer uses the continuous acrylonitrile base carbon fiber of more than longitudinal tensile 230GPa, high-modulus glass fiber winding layer (B) is the high-modulus glass fiber winding layer of more than longitudinal tensile 88GPa, it is wear-resisting high-modulus glass fiber along the axial wear-resisting high-modulus glass fiber enhancement layer (C) of the body of rod, resin matrix is polyfunctional epoxy resin system, product Tg value is between 130 DEG C ~ 210 DEG C, the continuous length of the body of rod made is 300m～7500m.
The cross sectional shape of the above-mentioned body of rod is circular, a diameter of 14mm～30mm, accounts for section area ratio more than 40% along the fibre reinforced layer (A) that the body of rod is axial.
The above-mentioned fibre reinforced layer (A) axial along the body of rod is closed loop continuous wave structure, and waveform quantity is between 4～20, and crest radius and trough semidiameter are 0.1mm ~ 2mm；High-modulus glass fiber winding layer (B) is identical with fibre reinforced layer (A) shape axial along the body of rod, and thickness is 0.3mm ~ 1.5mm.
Above-mentioned high-modulus glass fiber winding layer (B) and the closed loop continuous wave structure of the fibre reinforced layer (A) axial along the body of rod, be substitutable for symmetry or irregular bellows-shaped, multi-corner star-shape, polygon and many tooth-shape structures and the combinative structure of above shape.
The top layer sectional of the above-mentioned body of rod or continuous cladding thickness are that 1.5mm ~ 3.5mm thermoplastic wear resistant layer (D) forms four layers of enhancing abrasion-proof structure.
The preparation facilities of a kind of fibre reinforced composites eccentric abrasion prevention coiled rod that this utility model is mentioned, it is arranged on side including creel (1), pre-heating system (2), carbon fibre resin immersion equipment (3-1), glass outer fibre resin immersion equipment (3-2), wrapping machine (4), preforming (5), die orifice register (6), pultrusion die (7), mold heating device (8), rear solidifying heating furnice (10), traction apparatus (11), extrusion apparatus (12), winding device (13), and control system (9)；Fiber on described creel (1) takes out mode outside using, and tension force can regulate；The side of creel (1) is provided with pre-heating system (2), the right side of pre-heating system (2) installs carbon fibre resin immersion equipment (3-1), wrapping machine (4), glass outer fibre resin immersion equipment (3-2) and preforming (5) successively, internal layer carbon fiber infiltrates resin at carbon fibre resin immersion equipment (3-1), through wrapping machine (4) forward and reverse winding two layers of high modulus glass fibre, afterwards together with the outer abrasion resistant high-modulus glass fiber through glass fiber resin immersion equipment (3-2), enter mould (7) through preforming (5) and solidify；The right side of described preforming (5) installs die orifice register (6), pultrusion die (7), mold heating device (8) and rear solidifying heating furnice (10) successively, and the body of rod after solidification, through solidifying heating furnice later (10), is fully cured molding；The coiled rod of curing molding is under the traction of the traction apparatus (11) in outside, and through extrusion apparatus (12), coating thermoplastic wearing layer (D), afterwards in the upper rolling of winding device (13).
The beneficial effects of the utility model are: sucker rod of the present utility model, winding layer is added on the basis of carbon-fiber continuous rod pultrude process, internal ripple struction, three-decker one-step solidification moulding, add the contact area between carbon fiber and glass fibre, improve inter-layer bonding force, it is to avoid layering between difference reinforcing material when the body of rod that concentric structure causes reverses, add radial and axial comprcssive strength simultaneously, reduce bending diameter；Product minimum bend diameter is less than 100 times of product cross section diameter；Long-term preservation bending diameter is 150 times of product cross section diameter；Outer layer uses wear-resisting high-modulus glass fiber, improves the anti-wear performance of the body of rod.Top layer segmentation or continuously coating thermoplastic wearing layer form four layers and strengthen abrasion-proof structure, use in eccentric wear critical regions and can increase the service life further；
Utilize the preparation method that this utility model provides, use winding, pultrusion, extrusion molding assembling process, continuous-stable that resistance to eccentric wear carbon fibre reinforced composite coiled rod body produce can be greatly improved, ensure that one-shot forming, production efficiency is high, interfacial bonding strength is big, it is to avoid layering, the generation of peeling phenomenon.The use of die orifice register, can be effectively increased the mobility of glue, improve effect of impregnation, avoids resin premature gelation simultaneously.Rear solidifying heating furnice and mould outlet airtight connection, it is to avoid the body of rod stress slight crack that temperature shock causes, be effectively improved speed of production and curing degree；
Device of the present utility model achieves method of the present utility model, and production efficiency is high, easy and simple to handle.
Accompanying drawing explanation
Accompanying drawing 1 is the three-decker schematic diagram of the carbon fibre reinforced composite of resistance to eccentric wear coiled rod of the present utility model；
Accompanying drawing 2 is the four-layer structure schematic diagram of the carbon fibre reinforced composite of resistance to eccentric wear coiled rod of the present utility model；
Accompanying drawing 3 is the schematic flow sheet of preparation facilities of the present utility model；
Accompanying drawing 4 is the structural representation of preforming of the present utility model；
Accompanying drawing 5 is the axial sectional view of preforming of the present utility model；
In upper figure: A is that B is high-modulus glass fiber winding layer along the body of rod axial fibre reinforced layer；C is that D is thermoplastic wear resistant layer along the body of rod axial wear-resisting high-modulus glass fiber enhancement layer；
Creel 1, pre-heating system 2, carbon fibre resin immersion equipment 3-1, glass outer fibre resin immersion equipment 3-2, wrapping machine 4, preforming 5, die orifice register 6, pultrusion die 7, mold heating device 8, control part 9, rear solidifying heating furnice 10, traction apparatus 11, extrusion apparatus 12, coiler device 13, torque motor 13a, tier pole device 13b.
Interior yarn passing hole 5a, outer yarn passing hole 5b, hole fillet 5c.
Detailed description of the invention
In conjunction with accompanying drawing, the utility model will be further described:
The one carbon fibre reinforced composite of the resistance to eccentric wear coiled rod that this utility model is mentioned, main by the fibre reinforced layer A axial along the body of rod, high-modulus glass fiber winding layer B, along the axial wear-resisting high-modulus glass fiber enhancement layer C up of three layers of the body of rod, the fibre reinforced layer A axial along the body of rod of internal layer uses the continuous acrylonitrile base carbon fiber of more than longitudinal tensile 230GPa, high-modulus glass fiber winding layer B is the high-modulus glass fiber winding layer of more than longitudinal tensile 88GPa, it is wear-resisting high-modulus glass fiber along the axial wear-resisting high-modulus glass fiber enhancement layer C of the body of rod, resin matrix is polyfunctional epoxy resin system, product Tg value is between 130 DEG C ~ 210 DEG C, the continuous length of the body of rod made is 300m～7500m.
Wherein, the cross sectional shape of the body of rod is circular, a diameter of 14mm～30mm, accounts for section area ratio more than 40% along the fibre reinforced layer A that the body of rod is axial.
It addition, be closed loop continuous wave structure along the fibre reinforced layer A that the body of rod is axial, waveform quantity is between 4～20, and crest radius and trough semidiameter are 0.1mm ~ 2mm；High-modulus glass fiber winding layer B is identical with the fibre reinforced layer A shape axial along the body of rod, and thickness is 0.3mm ~ 1.5mm.
High-modulus glass fiber winding layer B and the fibre reinforced layer A axial along the body of rod can use symmetry or irregular bellows-shaped, multi-corner star-shape, polygon and many tooth-shape structures and the combinative structure of above shape.
The top layer sectional of the above-mentioned body of rod or continuous cladding thickness are that 1.5mm ~ 3.5mm thermoplastic wear resistant layer D-shaped becomes four layers to strengthen abrasion-proof structures.
The preparation facilities of a kind of fibre reinforced composites eccentric abrasion prevention coiled rod that this utility model is mentioned, it is arranged on side including creel 1, pre-heating system 2, carbon fibre resin immersion equipment 3-1, glass outer fibre resin immersion equipment 3-2, wrapping machine 4, preforming 5, die orifice register 6, pultrusion die 7, mold heating device 8, rear solidifying heating furnice 10, traction apparatus 11, extrusion apparatus 12, winding device 13, and control system 9；Fiber on described creel 1 takes out mode outside using, and tension force can regulate；The side of creel 1 is provided with pre-heating system 2, the right side of pre-heating system 2 installs carbon fibre resin immersion equipment 3-1, wrapping machine 4, glass outer fibre resin immersion equipment 3-2 and preforming 5 successively, internal layer carbon fiber infiltrates resin at carbon fibre resin immersion equipment 3-1, through wrapping machine 4 forward and reverse winding two layers of high modulus glass fibre, afterwards together with the outer abrasion resistant high-modulus glass fiber through glass fiber resin immersion equipment 3-2, enter mould 7 through preforming 5 and solidify；The right side of described preforming 5 installs die orifice register 6, pultrusion die 7, mold heating device 8 and rear solidifying heating furnice 10 successively, and the body of rod after solidification, through solidifying heating furnice 10 later, is fully cured molding；The coiled rod of curing molding is under the traction of the traction apparatus 11 in outside, and through extrusion apparatus 12, coating thermoplastic wearing layer D, rolling on winding device 13, and winding device afterwards 13 is provided with torque motor 13a, tier pole device 13b.
The preparation method of a kind of fibre reinforced composites eccentric abrasion prevention coiled rod that this utility model is mentioned, comprises the following steps and makes:
A () draws multi-beam carbon-fiber from creel 1, through carbon fibre resin immersion equipment 3-1 under the traction of traction apparatus 11, infiltrate resin matrix glue, and resin matrix is polyfunctional epoxy resin system；
B (), outside internal layer carbon fiber, uses wrapping machine 4 forward and reverse winding two-layer 0.3～1.5mm thickness, intersecting angle is the high-modulus glass fiber winding layer of 50 °～80 °；Endoporus 5a in preforming 5；From the wear-resisting high-modulus glass fiber of creel 1 extraction through glass fiber resin immersion equipment 3-2, enter the uniform outer yarn passing hole 5b of outer layer in preforming 5, interior two-layer is uniformly coated with, enter pultrusion die 7；
C the fiber of () three layers of infiltration resin is at pultrusion die 7 curing molding；Having mold heating device 8 pultrusion die 7 is distributed about, point 3 sections of heating, solidification temperature is between 150～230 DEG C, and heating mode in gradient, pultrusion speed is between 0.15m/min～0.50 m/min, and pultrusion goes out the composite body of rod；The composite body of rod that pultrusion goes out enter after solidifying heating furnice 10 carry out thermal stress process and after solidify；
(d) solidified afterwards after the composite body of rod, by traction apparatus 11, enter extrusion apparatus 12, segmentation or continuously coating thermoplastic wearing layer D, winding device 13 is wound on the disk of a diameter of 2.5m～3.5m afterwards.
The front portion of above-mentioned pultrusion die 7 is provided with die orifice register 6, and described die orifice register 6 uses conduction oil to circulate, adjustable mould inlet temperature, and temperature adjusting range is 50 DEG C ~ 150 DEG C.
The interior yarn passing hole 5a of preforming 5 is continuous wave shape, and around interior yarn passing hole 5a, all there is the round-corner transition of 2mm ~ 5mm uniform two circles or the outer yarn passing hole 5b of a diameter of 3mm ~ 6mm of multi-turn, the interior yarn passing hole of preformed board and the gateway of outer yarn passing hole.
Above-mentioned rear solidifying heating furnice 10 and mould outlet airtight connection, heating furnace first paragraph temperature is identical with die exit temperature.
The above, be only part preferred embodiment of the present utility model, and any those of ordinary skill in the art all technical schemes possibly also with above-mentioned elaboration are revised or are revised as the technical scheme of equivalent.Therefore, any simple modification carried out according to the technical solution of the utility model or substitute equivalents, belong to the greatest extent the scope that this utility model is claimed.
Claims (6)
1. the carbon fibre reinforced composite of a resistance to eccentric wear coiled rod, it is characterized in that: main by the fibre reinforced layer (A) axial along the body of rod, high-modulus glass fiber winding layer (B), along axial wear-resisting high-modulus glass fiber enhancement layer (C) up of three layers of the body of rod, the fibre reinforced layer (A) axial along the body of rod of internal layer uses the continuous acrylonitrile base carbon fiber of more than longitudinal tensile 230GPa, high-modulus glass fiber winding layer (B) is the high-modulus glass fiber winding layer of more than longitudinal tensile 88GPa, it is wear-resisting high-modulus glass fiber along the axial wear-resisting high-modulus glass fiber enhancement layer (C) of the body of rod, resin matrix is polyfunctional epoxy resin system, product Tg value is between 130 DEG C ~ 210 DEG C, the continuous length of the body of rod made is 300m～7500m.
The carbon fibre reinforced composite of resistance to eccentric wear coiled rod the most according to claim 1, is characterized in that: the cross sectional shape of the described body of rod is circle, and a diameter of 14mm～30mm accounts for section area ratio more than 40% along the fibre reinforced layer (A) that the body of rod is axial.
The carbon fibre reinforced composite of resistance to eccentric wear coiled rod the most according to claim 1, it is characterized in that: the described fibre reinforced layer (A) axial along the body of rod is closed loop continuous wave structure, waveform quantity is between 4～20, and crest radius and trough semidiameter are 0.1mm ~ 2mm；High-modulus glass fiber winding layer (B) is identical with fibre reinforced layer (A) shape axial along the body of rod, and thickness is 0.3mm ~ 1.5mm.
The carbon fibre reinforced composite of resistance to eccentric wear coiled rod the most according to claim 1, it is characterized in that: the closed loop continuous wave structure of described high-modulus glass fiber winding layer (B) and the fibre reinforced layer (A) axial along the body of rod, or be substitutable for symmetry or multi-corner star-shape, polygon and many tooth-shape structures and the combinative structure of above shape.
The carbon fibre reinforced composite of resistance to eccentric wear coiled rod the most according to claim 1, is characterized in that: the top layer sectional of the described body of rod or continuous cladding thickness are that 1.5mm ~ 3.5mm thermoplastic wear resistant layer (D) forms four layers of enhancing abrasion-proof structure.
6. the preparation facilities of the fibre reinforced composites eccentric abrasion prevention coiled rod as according to any one of claim 1-5, it is characterized in that: include that creel (1), pre-heating system (2), carbon fibre resin immersion equipment (3-1), glass outer fibre resin immersion equipment (3-2), wrapping machine (4), preforming (5), die orifice register (6), pultrusion die (7), mold heating device (8), rear solidifying heating furnice (10), traction apparatus (11), extrusion apparatus (12), winding device (13), and control system (9) are arranged on side；Fiber on described creel (1) takes out mode outside using, and tension force can regulate；The side of creel (1) is provided with pre-heating system (2), the right side of pre-heating system (2) installs carbon fibre resin immersion equipment (3-1), wrapping machine (4), glass outer fibre resin immersion equipment (3-2) and preforming (5) successively, internal layer carbon fiber infiltrates resin at carbon fibre resin immersion equipment (3-1), through wrapping machine (4) forward and reverse winding two layers of high modulus glass fibre, afterwards together with the outer abrasion resistant high-modulus glass fiber through glass fiber resin immersion equipment (3-2), enter mould (7) through preforming (5) and solidify；The right side of described preforming (5) installs die orifice register (6), pultrusion die (7), mold heating device (8) and rear solidifying heating furnice (10) successively, and the body of rod after solidification, through solidifying heating furnice later (10), is fully cured molding；The coiled rod of curing molding is under the traction of the traction apparatus (11) in outside, and through extrusion apparatus (12), coating thermoplastic wearing layer (D), afterwards in the upper rolling of winding device (13).
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| CN201620149783.4U CN205477401U (en) | 2016-02-29 | 2016-02-29 | Resistant carbon fiber reinforcement combined material continuous sucker rod that grinds partially and preparation facilities thereof |
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| CN201620149783.4U CN205477401U (en) | 2016-02-29 | 2016-02-29 | Resistant carbon fiber reinforcement combined material continuous sucker rod that grinds partially and preparation facilities thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105625951A (en) * | 2016-02-29 | 2016-06-01 | 胜利油田新大管业科技发展有限责任公司 | Eccentric-wear-resistant carbon fiber reinforced composite material continuous sucker rod and manufacturing device and method thereof |
| CN106239940A (en) * | 2016-09-30 | 2016-12-21 | 大庆市华禹石油机械制造有限公司 | A kind of multi-layer wear-resistant wipes the preparation facilities of carbon-fiber continuous rod |
| CN109808201A (en) * | 2019-01-22 | 2019-05-28 | 西安交通大学 | Preparation and molding method of wear-resistant composite material with nano-gradient fiber reinforcement |
| CN112564351A (en) * | 2020-12-11 | 2021-03-26 | 陕西航空电气有限责任公司 | Composite material sleeve for high-speed motor and preparation method thereof |
| CN117141003A (en) * | 2023-10-30 | 2023-12-01 | 天津工业大学 | A kind of thermoplastic composite material molding method |
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2016
- 2016-02-29 CN CN201620149783.4U patent/CN205477401U/en active Active
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| CN105625951A (en) * | 2016-02-29 | 2016-06-01 | 胜利油田新大管业科技发展有限责任公司 | Eccentric-wear-resistant carbon fiber reinforced composite material continuous sucker rod and manufacturing device and method thereof |
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| CN109808201A (en) * | 2019-01-22 | 2019-05-28 | 西安交通大学 | Preparation and molding method of wear-resistant composite material with nano-gradient fiber reinforcement |
| CN112564351A (en) * | 2020-12-11 | 2021-03-26 | 陕西航空电气有限责任公司 | Composite material sleeve for high-speed motor and preparation method thereof |
| CN112564351B (en) * | 2020-12-11 | 2023-12-05 | 陕西航空电气有限责任公司 | Composite sleeve for high-speed motor and preparation method thereof |
| CN117141003A (en) * | 2023-10-30 | 2023-12-01 | 天津工业大学 | A kind of thermoplastic composite material molding method |
| CN117141003B (en) * | 2023-10-30 | 2023-12-26 | 天津工业大学 | A kind of thermoplastic composite material molding method |
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