CN110370686B - Manufacturing process of double-composite material reinforced ring - Google Patents
Manufacturing process of double-composite material reinforced ring Download PDFInfo
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- CN110370686B CN110370686B CN201910746102.0A CN201910746102A CN110370686B CN 110370686 B CN110370686 B CN 110370686B CN 201910746102 A CN201910746102 A CN 201910746102A CN 110370686 B CN110370686 B CN 110370686B
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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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
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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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
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- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention relates to a manufacturing process of a double-composite material reinforced ring.A retainer ring is arranged on two sides of a part of a rotating shaft, which needs to be wound with a composite material; winding the glass fiber on the corresponding part of the rotating shaft; winding carbon fibers outside the glass fibers; placing a rotating shaft of a workpiece wound with the glass fiber and carbon fiber double-composite material in a heating device, heating to remove glue seeped from the surface under rotation, and rotating to perform pre-curing and curing treatment; and (4) taking out the workpiece after cooling, removing the check ring, and manufacturing to obtain the double-composite material reinforced ring. Compared with the prior art, the invention adopts the double-layer composite material carbon fiber reinforced ring, which can simplify the process and reduce the manufacturing cost, and the cured and molded double-layer composite material reinforced ring can reach the design requirement.
Description
Technical Field
The invention relates to the technical field of application research of carbon fiber composite materials, in particular to a manufacturing process of a double-composite material reinforced ring.
Background
In the process of developing green energy, energy-saving energy storage is a development direction for reasonably utilizing energy, an energy storage flywheel is a direction which is always explored and developed at home and abroad, carbon fiber composite materials are used as reinforcing materials and are more and more extensive, the carbon fiber composite materials have high strength, high modulus and designability, and the carbon fiber composite materials are not only used for manufacturing the energy storage flywheel, but also comprise reinforcing rings which are formed by reinforcing the parts, which are bonded with magnetic steel, on a flywheel rotating shaft by the carbon fiber composite materials.
The traditional method is that a carbon fiber circular ring (namely a reinforcing ring) with the diameter of 0.1-0.2 mm smaller than the diameter of a rotating shaft is wound on a core mold, the core mold is demoulded after being solidified and formed, then the rotating shaft with the magnetic steel embedded therein is cooled to-60 to-70 ℃ by adopting a cold sleeve method according to the principle of thermal expansion and cold contraction, the carbon fiber reinforcing ring is sleeved on the rotating shaft, and the carbon fiber reinforcing ring has an interference magnitude due to thermal expansion after the rotating shaft is restored to the room temperature, so that the carbon fiber reinforcing ring has a compressive stress on the rotating shaft; the method has higher requirements on the surface smoothness and the roundness of the magnetic steel inlaid in the rotating shaft, and a metal sleeve is generally additionally arranged outside the magnetic steel, so the processing cost is higher.
Disclosure of Invention
In order to realize the purpose of manufacturing the double-layer composite carbon fiber reinforced ring, the invention directly carries out the process method of gradually reducing and winding the glass fiber and the carbon fiber layer by layer according to the design requirement by the large tension of the part which is bonded with the magnetic steel on the rotating shaft through the calculation design of the composite material.
The purpose of the invention can be realized by the following technical scheme:
a manufacturing process of a double-composite material reinforced ring comprises the following steps:
preparing a rotating shaft workpiece needing to be wound and bonded with magnetic steel, fixedly installing aluminum alloy check rings on two sides of a part needing to be wound by using bolts, wherein the diameter of each check ring is 2mm larger than the outer diameter of the wound carbon fiber, and fixing the check rings on two sides of the part needing to be wound with the composite material of the rotating shaft, coating a release agent on the check rings in advance, and cleaning the surface of the wound part bonded with the magnetic steel for the defects of burrs, flanges and the like;
glass fiber is put on a clamped rotating shaft through a glue dipping tank and a tension pulley, the winding position is adjusted, the yarn width is set, and the glass fiber is wound on the outer surface of the magnetic steel bonded on the rotating shaft and is wound to the designed thickness;
after the glass fiber is wound, the carbon fiber is continuously wound, the carbon fiber with different strength and modulus can be selected according to the design, the yarn width is set, and the number of winding layers is designed to wind the carbon fiber outside the glass fiber;
placing a rotating shaft of a workpiece wound with the glass fiber and carbon fiber double-composite material in a heating device, heating to remove glue seeped from the surface under rotation, and rotating to perform pre-curing and curing treatment;
and (4) taking out the workpiece after cooling, dismantling the retainer ring, and removing burrs on two side surfaces to obtain the double-composite material reinforced ring.
The glass fiber and the carbon fiber are directly wound on the part of the rotating shaft inlaid with the magnetic material under the condition of high tension, and the cured and molded double-layer composite carbon fiber reinforced ring keeps a certain prestress on the rotating shaft. Because the rotating shaft works in a high-speed rotating state, the magnetic material is fixed on the rotating shaft by an adhesion method, the magnetic material has an outward force under the action of centrifugal force, and the double-layer composite carbon fiber reinforced ring with prestress can restrain and fix the magnetic material to prevent the magnetic material from flying off and falling off during high-speed rotation.
If the carbon fiber is directly adopted for winding, the composite material can be cured and molded only by heating to a certain temperature, the thermal expansion coefficient difference between the metal material and the carbon fiber material is more than one order of magnitude, and due to thermal expansion and cold contraction, the prestress of the carbon fiber reinforced ring on the rotating shaft is reduced after curing and cooling, even a gap is formed, and the effect of applying the prestress on the magnetic steel of the rotating shaft cannot be achieved; the thermal expansion coefficient of the glass fiber is slightly smaller than that of the metal material, so that the high-strength glass fiber is directly wound with high tension on the part where the magnetic material is embedded in the rotating shaft, then the carbon fiber is wound with high tension, and the cured and molded double-layer composite carbon fiber reinforced ring can meet the design requirements.
Furthermore, the glass fiber is high-strength S4 glass fiber and/or 12-24K glass fiber, the winding starting tension is 90 +/-1N when the glass fiber is wound, and the tension of each winding layer is reduced by 1-2N. The fiber of each layer has a pressure to the fiber of the inner layer in the winding process, so that the fiber of the inner layer has a certain relaxation, the tension of the fiber of each layer is set layer by layer according to calculation, after the winding is finished, the tension of the fiber of each layer is basically consistent, and the integral stress strength of the cured composite material is the highest. If the tension is not uniformly controlled, the fiber layers are stressed greatly when stressed, and the fiber layers are stressed slightly, so that the fiber layers are broken, and the optimal mechanical strength effect of the composite material cannot be achieved. The thickness of the glass fiber layer formed after winding is 1-1.5 mm.
Furthermore, T700 and/or 12k are/is adopted, carbon fibers with the tensile strength of 4500-5000 MPa are wound, the winding starting tension of the carbon fibers is 160 +/-1N when the carbon fibers are wound, and the tension of each wound layer is reduced by 2-3N, so that the stress of the carbon fibers is in an equal stress state, and the optimal stress is achieved.
Further, the thickness of the double composite material layer formed after winding is 5-6.5 mm.
Furthermore, one end of the workpiece is clamped on a rotating chuck of the heating device, and the other end of the workpiece is propped against a central hole of the rotating shaft by the tail of the heating device.
Further, the workpiece is subjected to rotary treatment at 90 ℃ for 20-22 min, the surface glue of the workpiece is removed, then the workpiece is pre-cured at 90 ℃ for 3-4 h, cured at 110-130 ℃ for 4-5 h, cooled to room temperature along with a heating device, and the curing is finished.
Compared with the prior art, the invention adopts the double-layer composite material carbon fiber reinforced ring, which can simplify the process and reduce the manufacturing cost, and the cured and molded double-layer composite material reinforced ring can reach the design requirement.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
A manufacturing process of a double-composite material reinforced ring comprises the following process steps:
(1) preparing a rotating shaft workpiece needing to be wound and bonded with magnetic steel, fixedly mounting aluminum alloy check rings on two sides of a part needing to be wound by using bolts, clamping the aluminum alloy check rings on a chuck of a winding machine, and propping a tail top on a central hole of the rotating shaft. Setting a program for winding glass fibers, using a strand of 24K glass fibers with a yarn width of 2-4 mm, and controlling the number of winding layers, wherein the thickness of the glass fiber composite material is 1-1.5 mm. The winding starting tension is 90N, and the tension of each winding layer is reduced by 1-2N.
(2) The method comprises the steps of adopting a T700/12K strand for carbon fiber, setting a carbon fiber winding program, controlling the number of winding layers, controlling the thickness of a carbon fiber composite material to be 4-5 mm, controlling the initial tension of carbon fiber winding to be 160N, and reducing the tension of each winding layer to be 2-3N. And measuring the total thickness of the composite material after winding to be 5-6.5 mm.
(3) Clamping a rotating shaft workpiece on a rotating chuck of an oven, and propping a tail top on a central hole of a rotating shaft; adjusting the temperature to 90 ℃, rotating for 20 minutes, and removing the surface glue of the workpiece. The oven was restarted and pre-cured at a temperature of 90 ℃ for 3 hours. Setting the curing temperature at 110 ℃, curing for 2 hours at 130 ℃, curing for 2 hours, cooling to room temperature along with an oven, and finishing curing.
(4) And (4) dismantling the retainer ring on the rotating shaft, removing the waste edges and the rough edges, and manufacturing to obtain the double-composite material reinforced ring.
Example 2
A manufacturing process of a double-composite material reinforced ring comprises the following process steps:
(1) preparing a rotating shaft workpiece needing to be wound and bonded with magnetic steel, fixedly mounting aluminum alloy check rings on two sides of a part needing to be wound by using bolts, clamping the aluminum alloy check rings on a chuck of a winding machine, and propping a tail top on a central hole of the rotating shaft. The procedure of winding glass fiber is set, a strand of high-strength S4 glass fiber is used, the yarn width is 2mm, the number of winding layers is controlled, and the thickness of the glass fiber composite material is 1 mm. The winding start tension was 89N, and the tension was reduced by 1N for each winding layer.
(2) The carbon fiber adopts T700 carbon fiber, the carbon fiber winding program is set, the yarn width is 3mm, the number of winding layers is controlled, the thickness of the carbon fiber composite material is 4mm, the carbon fiber winding initial tension is 159N, and the tension of each winding layer is reduced by 2N. The total thickness of the composite was measured to be 5mm after winding.
(3) Clamping a rotating shaft workpiece on a rotating chuck of an oven, and propping a tail top on a central hole of a rotating shaft; adjusting the temperature to 90 ℃, rotating for 21 minutes, and removing the surface glue of the workpiece. The oven was restarted and pre-cured at a temperature of 90 ℃ for 3 hours. Setting the curing temperature at 110 ℃ for curing for 2 hours and setting the curing temperature at 120 ℃ for curing for 2 hours, and cooling the mixture to room temperature along with an oven to finish curing.
(4) And (4) dismantling the retainer ring on the rotating shaft, removing the waste edges and the rough edges, and manufacturing to obtain the double-composite material reinforced ring.
Example 3
A manufacturing process of a double-composite material reinforced ring comprises the following process steps:
(1) preparing a rotating shaft workpiece needing to be wound and bonded with magnetic steel, fixedly mounting aluminum alloy check rings on two sides of a part needing to be wound by using bolts, clamping the aluminum alloy check rings on a chuck of a winding machine, and propping a tail top on a central hole of the rotating shaft. The procedure for winding glass fiber is set, a strand of 12K glass fiber with a yarn width of 3mm is used, the number of winding layers is controlled, and the thickness of the glass fiber composite material is 1.5 mm. The winding start tension was 91N, and the tension was reduced by 1N for each winding layer.
(2) The carbon fiber adopts 12K carbon fiber, sets up the carbon fiber winding procedure, and the yarn width is 4.0mm, and the number of layers of control winding, carbon-fibre composite thickness 5mm, the initial tension of carbon fiber winding 161N, every layer of winding tension subtracts 3N. The total thickness of the composite was measured to be 6.5mm after winding.
(3) Clamping a rotating shaft workpiece on a rotating chuck of an oven, and propping a tail top on a central hole of a rotating shaft; adjusting the temperature to 90 ℃, rotating for 22 minutes, and removing the surface glue of the workpiece. The oven was restarted and pre-cured at a temperature of 90 ℃ for 3 hours. Setting the curing time, curing at 120 ℃ for 5 hours, cooling to room temperature along with the oven, and finishing curing.
(4) And (4) dismantling the retainer ring on the rotating shaft, removing the waste edges and the rough edges, and manufacturing to obtain the double-composite material reinforced ring.
Example 4
A manufacturing process of a double-composite material reinforced ring comprises the following process steps:
(1) preparing a rotating shaft workpiece needing to be wound and bonded with magnetic steel, fixedly mounting aluminum alloy check rings on two sides of a part needing to be wound by using bolts, clamping the aluminum alloy check rings on a chuck of a winding machine, and propping a tail top on a central hole of the rotating shaft. The procedure for winding glass fiber is set, a strand of 24K glass fiber with 4mm yarn width is used, the number of winding layers is controlled, and the thickness of the glass fiber composite material is 1 mm. The winding start tension is 90N, and the tension is reduced by 2N for each winding layer.
(2) The method is characterized in that one strand of carbon fiber is T700/12K, a carbon fiber winding program is set, the yarn width is 3mm, the number of winding layers is controlled, the thickness of the carbon fiber composite material is 5mm, the initial tension of the carbon fiber winding is 160N, and the tension of each winding layer is reduced by 3N. The total thickness of the composite was measured to be 6mm after winding.
(3) Clamping a rotating shaft workpiece on a rotating chuck of an oven, and propping a tail top on a central hole of a rotating shaft; adjusting the temperature to 90 ℃, rotating for 20 minutes, and removing the surface glue of the workpiece. The oven was restarted and pre-cured at a temperature of 90 ℃ for 3 hours. Setting the curing temperature at 110 ℃ for curing for 2 hours and the curing temperature at 130 ℃ for curing for 3 hours, and cooling to room temperature along with an oven to finish curing.
(4) And (4) dismantling the retainer ring on the rotating shaft, removing the waste edges and the rough edges, and manufacturing to obtain the double-composite material reinforced ring.
The prestress obtained by winding the glass fiber on the core mold according to a tension system is 300-320 MPa after testing, and the prestress of 40-50 MPa can be obtained only by winding the single carbon fiber according to the same tension system, so the design requirement can be met through the double-composite material.
In the description of the present invention, it is to be understood that the terms "sides," "rear," "outer," and the like, indicate orientations or positional relationships and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (3)
1. A manufacturing process of a double-composite material reinforced ring is characterized by comprising the following steps:
arranging check rings on two sides of the part of the rotating shaft, which needs to be wound with the composite material;
winding the glass fiber on the corresponding part of the rotating shaft;
winding carbon fibers outside the glass fibers;
placing a rotating shaft of a workpiece wound with the glass fiber and carbon fiber double-composite material in a heating device, heating to remove glue seeped from the surface under rotation, and rotating to perform pre-curing and curing treatment;
cooling, taking out the workpiece, removing the check ring, and manufacturing to obtain the double-composite material reinforced ring;
the glass fiber is high-strength S4 glass fiber and/or 12-24K glass fiber;
when the glass fiber is wound, the winding starting tension is 90 +/-1N, and the tension of each layer of wound glass fiber is reduced by 1-2N;
the thickness of the glass fiber layer formed after winding is 1-1.5 mm;
the carbon fiber is T700 and/or 12k carbon fiber with the tensile strength of 4500-5000 MPa;
when the carbon fibers are wound, the winding starting tension is 160 +/-1N, and the tension of each layer of wound carbon fibers is reduced by 2-3N;
the thickness of the double composite material layer formed after winding is 5-6.5 mm;
the rotating shaft is bonded with magnetic steel, and the glass fiber is wound outside the magnetic steel.
2. The process of claim 1, wherein the workpiece is clamped at one end by a rotating chuck of the heating device and rotated at the other end by a tail top against a central hole of the rotating shaft.
3. The manufacturing process of the double-composite material reinforced ring according to claim 1, wherein the workpiece is subjected to rotary treatment at 90 ℃ for 20-22 min, the surface glue of the workpiece is removed, and then the workpiece is pre-cured at 90 ℃ for 3-4 h, cured at 110-130 ℃ for 4-5 h, and cooled to room temperature along with a heating device to complete curing.
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| CN111199125B (en) * | 2020-01-23 | 2023-03-17 | 核工业第八研究所 | Design method of wet fiber winding tension |
| CN114193749B (en) * | 2021-12-09 | 2023-11-28 | 长春长光宇航复合材料有限公司 | Vertical composite winding process for prepreg cloth tape of oversized spray pipe expansion section |
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| CN105034402A (en) * | 2015-05-22 | 2015-11-11 | 上海复合材料科技有限公司 | Moulding method of missile launcher cylinder body |
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| CN107588277A (en) * | 2017-07-17 | 2018-01-16 | 齐齐哈尔华安特种容器有限公司 | Electric tracing tube that glass fibre mixes with carbon fiber electrothermal line and preparation method thereof |
| CN107672194A (en) * | 2017-09-08 | 2018-02-09 | 哈尔滨工程大学 | A kind of FRP stirrups with ribbing and preparation method |
| CN108790208A (en) * | 2018-07-02 | 2018-11-13 | 厦门鸿基伟业复材科技有限公司 | Prepreg tape wind suitable for annular products |
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