CN104294407A - Shaft core focused carbon fiber graphitization furnace through laser tunnel reflection method - Google Patents
Shaft core focused carbon fiber graphitization furnace through laser tunnel reflection method Download PDFInfo
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- CN104294407A CN104294407A CN201410543384.1A CN201410543384A CN104294407A CN 104294407 A CN104294407 A CN 104294407A CN 201410543384 A CN201410543384 A CN 201410543384A CN 104294407 A CN104294407 A CN 104294407A
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Abstract
The invention discloses a shaft core focused carbon fiber graphitization furnace through a laser tunnel reflection method. The shaft core focused carbon fiber graphitization furnace mainly comprises an adjustable power laser generator, an infrared temperature measurement linkage control device, a non-contact labyrinth seal device, a quartz glass tube, a light scattering device and a traction device, wherein carbon fibers are positioned at a shaft core of the quartz glass tube, enter the quartz glass tube from the yarn inlet of the quartz glass tube via the non-contact labyrinth seal device and are moved at a certain speed by applying a certain traction force by virtue of the traction device; and the furnace is filled with high-purity inert gases. According to the graphitization furnace disclosed by the invention, the adjustable power laser generator positioned at one end of the yarn inlet of the quartz glass tube generates multiple paths of laser by a laser distributor, and laser transmitting heads are uniformly arranged in axial symmetry relative to the shaft core of the quartz glass tube of the graphitization furnace, so that the multiple paths of laser irradiate the inner wall of a heating areas of the quartz glass tube with a mirror surface to generate multiple reflections in the same angle relative to the shaft core and are focused at the shaft core. Therefore, the carbon fibers are rapidly heated, and the energy utilization rate is high.
Description
Technical field
The present invention relates to a kind of laser tunnel reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, belong to carbon fiber and graphite processing and manufacturing field.
Background technology
Graphite fibre under the protection of inert gas, carries out graphitization and obtained by carbon fiber in 2000-3000 DEG C.In graphitizing process, carbon fiber can remove the non-carbon of about 5% further, and carbon atom carries out the arrangement of graphite-like structure simultaneously, microcosmic is changed to ordered 3 D structure by two-dimensional layer graphite-structure, crystalline size increases, and the degree of orientation increases, thus the modulus of carbon fiber is improved.The key factor affecting carbon fiber and graphite is graphitization equipment and high-temperature heat treatment technology.
At present, at home and abroad the industrial Graphitization Apparatus of Carbon Fiber that generally adopts mostly is high-temperature tubular electric resistance furnace for graphitization, its shortcoming is that power consumption is large, and the heater life-span is short, thus cause cost high, in addition, industrial also have employing induction graphitizing furnace, principle of induction is utilized to carry out high temperature graphitization process to carbon fiber, this method is generally by indirect graphite heater (boiler tube or crucible), carbon fiber passes and is heated indirectly in crucible or in graphite-pipe, and its shortcoming is device structure and material requirements is high, heat-energy losses is large.Chinese patent CN1399017 discloses a kind of Carbin fibre graphitization process and device, which solves the shortcoming of parts of traditional graphitizing furnace, but deposit at high temperature gas ionization to cause and cannot keep high temperature, and the coupling cavity at high temperature oxidation damage technology barrier such as soon.
Summary of the invention
The object of the invention is to propose a kind of low energy consumption, low cost, require low to the structure and material of equipment, realize Fast Heating graphitization simultaneously and be convenient to the apparatus and method of consecutive production.
Realizing above-mentioned purpose technical scheme is: the graphitizing furnace in conventional high-temperature graphitization technique is improved to a kind of laser tunnel reflectometry axle core Focusing on Carbon Fiber graphitizing furnace in the present invention.Carbon fiber is being applied first to put silk by the silk device of putting of band damping under certain tractive force by draw-gear; then in the air furnace of 300-500 DEG C, through preliminary treatment of coming unstuck; again under the protection of nitrogen through the Passivation Treatment of 800-1200 DEG C; then enter laser tunnel reflectometry axle core Focusing on Carbon Fiber graphitizing furnace and carry out graphitization processing, the carbon fiber after graphitization processing carries out the techniques such as starching again and has just made graphite fibre.
Laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, mainly comprise power-adjustable laser generator, laser head, infrared temperature measurement apparatus, infrared measurement of temperature linkage control device, contactless labyrinth gland, quartz glass tube and draw-gear, quartz glass tube is the main body of graphitizing furnace, the two ends of quartz glass tube are provided with contactless labyrinth gland, the inner side of the contactless labyrinth gland of one end of quartz glass tube is provided with air inlet and laser head, laser head is connected with power-adjustable laser generator, carbon fiber is positioned at the axle core of quartz glass tube, carbon fiber enters in quartz glass tube from the silk mouth that enters of quartz glass tube via contactless labyrinth gland, carbon fiber is moved with certain speed under the certain tractive force of applying by draw-gear, the inner side of the contactless labyrinth gland of the other end of quartz glass tube is provided with gas outlet, infrared temperature measurement apparatus and carbon fiber cooling device, high-purity inert gas is full of in quartz glass tube, be positioned at quartz glass tube and enter the power-adjustable laser generator of silk mouth one end via laser distributor generation multi-path laser, laser beam emitting head is arranged symmetrically and evenly relative to the quartz glass tubular axis mandrel of graphitizing furnace, the relative axle core of multi-path laser is radiated at equal angular the quartz glass tube thermal treatment zone inwall with minute surface produces multiple reflections and focuses at axle core place, thus Fast Heating is carried out to carbon fiber, draw-gear is positioned over the outside of the outlet of quartz glass tube.
Laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, it is temperature required that the carbon fiber being positioned at axle core makes it reach more than 2500 DEG C graphitization techniques at short notice under multi-path laser focusing illumination, the infrared temperature measurement apparatus being positioned at filament mouth side gathers carbon fiber heating temperature and signal is passed to infrared measurement of temperature interlocking device controller, regulates the power of laser generator and carbon fiber hauling speed to make its temperature maintain more than 2500 DEG C graphitization techniques in real time temperature required after infrared measurement of temperature interlocking device controller judges by controller.After graphited carbon fiber is by cooling device part, enters the starching of impregnation stove, then in drying oven, carries out drying and processing, finally collect finished silk by receipts silk machine.
Laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, consider that the technical scheme of security performance is equipped with light scattering device having minute surface quartz glass tube heating region end, this device is tapered, there is the fold texture of many different directions, energy can be absorbed by the laser dump energy dispersion absorbed in a large number by these textures, avoids in certain some place concentration of energy.When infrared temperature measurement apparatus records carbon fiber heating temperature below or above setting value and by regulating laser power and hauling speed still cannot recover, automatic transmission signal closed laser generator and draw-gear by infrared measurement of temperature interlocking device controller and send alarm signal, thus avoiding accident to occur.
Laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, owing to adopting laser tunnel reflectometry by concentration of energy to axle core, capacity usage ratio is high, owing to not needing the temperature that will be heated in quartz glass tube needed for graphitization everywhere, laser beam emitting head is arranged symmetrically and evenly relative to the axle mandrel of graphitizing furnace, the relative axle core of multi-path laser is radiated at equal angular the quartz glass tube thermal treatment zone inwall with minute surface produces multiple reflections and focuses at axle core place, thus Fast Heating is carried out to carbon fiber.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace.
Fig. 2 is the graphitization technique production procedure and the equipment composition schematic diagram that adopt a kind of laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace.
In figure: 1-power-adjustable laser generator, 2-laser head, 3-has the quartz glass tube of minute surface, 4-carbon fiber, 5-virtual optical path, 6-light scattering device, 7-infrared temperature measurement apparatus, 8-carbon fiber cooling device, the contactless labyrinth gland of 9-, 10-draw-gear, 11-infrared measurement of temperature linkage control device controller, 12-is with the thread supplying machine of damping, 13-degumming stove, 14-passivation stove, 15-laser tunnel reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, 16-impregnation stove, 17-drying oven, 18-receives silk machine, 19-microcomputerized controller, 20-infrared measurement of temperature interlocking device controller, 21-gas flowmeter.
Detailed description of the invention
Figure 2 shows that the graphitization technique flow sheet adopting a kind of laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, carbon fiber 4 is being applied first to put silk by the thread supplying machine 12 of band damping under certain tractive force by draw-gear 10, then enter into in-furnace temperature to control at the degumming stove 13 of 300-500 DEG C through to come unstuck preliminary treatment, under the protection being full of nitrogen, in-furnace temperature controls to do Passivation Treatment in the passivation stove 14 of 800-1200 DEG C again, then enter in a kind of laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace 15 and carry out graphitization processing, carbon fiber 4 after graphitization processing enters in impregnation stove 16 again and carries out starching process, dried by drying oven 17 pairs of carbon fibers 4 again, the graphite fibre of finished product is finally collected by receipts silk machine 18.Controlled gas flowmeter 21 by microcomputerized controller 19, be with the thread supplying machine 12 of damping, received silk machine 18 and infrared measurement of temperature interlocking device controller 20 in whole process, whole process can be carried out on request.
A kind of laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, as shown in Figure 1, power-adjustable laser generator 1, laser head 2, the quartz glass tube 3 with minute surface, light scattering device 6, infrared temperature measurement apparatus 7, carbon fiber cooling device 8, contactless labyrinth gland 9, draw-gear 10 and infrared measurement of temperature linkage control device controller 11 is mainly comprised.By contactless labyrinth gland 9 entering the sealing of filament mouth two, in device, be connected with high-purity inert gas argon gas.Carbon fiber 4 is positioned at stove axle core position, multiple power-adjustable laser generator 1 produces multi-path laser simultaneously, the path of laser is as shown in the virtual optical path 5 of Fig. 1, the multi-path laser generated is injected in heating region by the laser head 2 one-tenth respective angles of arranging symmetrically and evenly relative to axle mandrel, then do not reflexed on carbon fiber 4 via the quartz glass tube 3 with minute surface again through carbon fiber by the laser that carbon fiber 4 absorbs, multi-path laser focuses at axle core place, the carbon fiber 4 being in axle core position is rapidly heated under the irradiation of laser, arrive graphitization technique condition, the last portion of residual laser be not completely absorbed can be absorbed by light scattering device 7 scattering.
A kind of laser tunnel of the present invention reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, carbon fiber 4 is pulled device 10 tethered sliding in graphitizing process always, carbon fiber after graphitization is passed to infrared measurement of temperature interlocking device controller 11 through temperature measuring area by infrared temperature measurement apparatus 7 thermometric and by signal thus is controlled the power of power-adjustable laser generator 1 and the hauling speed of draw-gear 10, to maintain graphitization technique condition.The graphite fibre being in the condition of high temperature cools through apparatus for supercooling 8 again goes out through filament mouth, and whole graphitizing process completes, and finally just obtains the graphite fibre of finished product again through the process of starching and stoving process.
Claims (3)
1. a laser tunnel reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, it is characterized in that: mainly comprise power-adjustable laser generator, laser head, infrared temperature measurement apparatus, infrared measurement of temperature linkage control device, contactless labyrinth gland, quartz glass tube and draw-gear, quartz glass tube is the main body of graphitizing furnace, the two ends of quartz glass tube are provided with contactless labyrinth gland, the inner side of the contactless labyrinth gland of one end of quartz glass tube is provided with air inlet and laser head, laser head is connected with power-adjustable laser generator, carbon fiber is positioned at the axle core of quartz glass tube, carbon fiber enters in quartz glass tube from the silk mouth that enters of quartz glass tube via contactless labyrinth gland, carbon fiber is moved with certain speed under the certain tractive force of applying by draw-gear, the inner side of the contactless labyrinth gland of the other end of quartz glass tube is provided with gas outlet, infrared temperature measurement apparatus and carbon fiber cooling device, high-purity inert gas is full of in quartz glass tube, be positioned at quartz glass tube and enter the power-adjustable laser generator of silk mouth one end via laser distributor generation multi-path laser, laser beam emitting head is arranged symmetrically and evenly relative to the quartz glass tubular axis mandrel of graphitizing furnace, the relative axle core of multi-path laser is radiated at equal angular the quartz glass tube thermal treatment zone inwall with minute surface produces multiple reflections and focuses at axle core place, thus Fast Heating is carried out to carbon fiber, the infrared temperature measurement apparatus being positioned at filament mouth side gathers carbon fiber heating temperature and signal is passed to infrared measurement of temperature interlocking device controller, the power of laser generator and carbon fiber hauling speed is regulated to make carbon fiber temperature maintain graphitization technique in real time by controller after infrared measurement of temperature interlocking device controller judges temperature required, draw-gear is positioned over the outside of the outlet of quartz glass tube.
2. a kind of laser tunnel according to claim 1 reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, is characterized in that: inert gas is argon gas.
3. a kind of laser tunnel according to claim 1 reflectometry axle core Focusing on Carbon Fiber graphitizing furnace, is characterized in that: quartz glass tube heating region end is equipped with light scattering device, and this device is tapered, has the fold texture of many different directions.
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| CN201410543384.1A CN104294407A (en) | 2014-10-15 | 2014-10-15 | Shaft core focused carbon fiber graphitization furnace through laser tunnel reflection method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760953A (en) * | 2015-04-13 | 2015-07-08 | 北京化工大学 | Total reflection axis focused carbon fibre graphitization furnace for laser tunnel |
| CN105910874A (en) * | 2016-04-08 | 2016-08-31 | 东华大学 | Method and apparatus for preparing multifilament from carbon fiber strand through automatic impregnation |
| CN106521712A (en) * | 2016-12-09 | 2017-03-22 | 北京化工大学 | Controllable laser type ultrahigh-temperature graphitization device for carbon fiber |
| WO2018011524A1 (en) * | 2016-07-13 | 2018-01-18 | Centre National De La Recherche Scientifique | Method for the preparation of a solid carbonaceous material locally containing graphite |
| CN107761193A (en) * | 2017-09-21 | 2018-03-06 | 北京化工大学 | One kind can the efficient preparation facilities of gradual change integrating laser carbonization stove and method |
| CN110257959A (en) * | 2019-06-28 | 2019-09-20 | 中国科学院合肥物质科学研究院 | It is a kind of to be graphitized equipment with the carbon fiber microwave of Continuous maching |
| CN114031079A (en) * | 2021-11-03 | 2022-02-11 | 北京化工大学 | Molybdenum carbide carbon nanofiber composite material and preparation method and application thereof |
| CN114351291A (en) * | 2022-01-19 | 2022-04-15 | 苏州光兴智能科技有限公司 | Special fiber laser tunnel preparation method and device |
| CN114892388A (en) * | 2022-06-08 | 2022-08-12 | 途格科技(广东)有限公司 | Carbon fiber laser graphitization tunnel preparation method and device |
| CN114990735A (en) * | 2022-06-16 | 2022-09-02 | 途格科技(广东)有限公司 | Carbon fiber laser carbonization tunnel preparation method and device |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760953A (en) * | 2015-04-13 | 2015-07-08 | 北京化工大学 | Total reflection axis focused carbon fibre graphitization furnace for laser tunnel |
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| CN105910874A (en) * | 2016-04-08 | 2016-08-31 | 东华大学 | Method and apparatus for preparing multifilament from carbon fiber strand through automatic impregnation |
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| CN106521712A (en) * | 2016-12-09 | 2017-03-22 | 北京化工大学 | Controllable laser type ultrahigh-temperature graphitization device for carbon fiber |
| CN107761193A (en) * | 2017-09-21 | 2018-03-06 | 北京化工大学 | One kind can the efficient preparation facilities of gradual change integrating laser carbonization stove and method |
| CN107761193B (en) * | 2017-09-21 | 2023-06-27 | 北京化工大学 | Efficient preparation device and method for gradual-change laser carbonization furnace |
| CN110257959A (en) * | 2019-06-28 | 2019-09-20 | 中国科学院合肥物质科学研究院 | It is a kind of to be graphitized equipment with the carbon fiber microwave of Continuous maching |
| CN110257959B (en) * | 2019-06-28 | 2024-03-26 | 中国科学院合肥物质科学研究院 | Carbon fiber microwave graphitization equipment capable of continuously processing |
| CN114031079A (en) * | 2021-11-03 | 2022-02-11 | 北京化工大学 | Molybdenum carbide carbon nanofiber composite material and preparation method and application thereof |
| CN114031079B (en) * | 2021-11-03 | 2023-10-27 | 北京化工大学 | Molybdenum carbide carbon nanofiber composite material and preparation method and application thereof |
| CN114351291A (en) * | 2022-01-19 | 2022-04-15 | 苏州光兴智能科技有限公司 | Special fiber laser tunnel preparation method and device |
| CN114892388A (en) * | 2022-06-08 | 2022-08-12 | 途格科技(广东)有限公司 | Carbon fiber laser graphitization tunnel preparation method and device |
| CN114990735A (en) * | 2022-06-16 | 2022-09-02 | 途格科技(广东)有限公司 | Carbon fiber laser carbonization tunnel preparation method and device |
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Application publication date: 20150121 |