The invention discloses a total reflection axis focused carbon fibre graphitization furnace for a laser tunnel. The total reflection axis focused carbon fibre graphitization furnace for the laser tunnel is composed of the six parts including a graphitization cavity, a quenching cavity, a laser heating system, a sealing system, a fibre conveying system and a safety accessory, wherein the laser heating system is located in the graphitization cavity; the graphitization cavity is connected with the quenching cavity through the sealing system; the fibre conveying system drives fibres to penetrate through the graphitization cavity, the sealing system and the quenching cavity respectively. According to the total reflection axis focused carbon fibre graphitization furnace for the laser tunnel, disclosed by the invention, graphitization efficiency is greatly increased by virtue of laser heating, thus avoiding heat loss and reducing production cost and energy consumption; the product is stable in quality, and the operation is safe; graphitized fibre crystallization is more compact due to a liquid argon quenching process, thus greatly improving the strength and the toughness of the fibres; magnetofluid thread sealing is safe and reliable, leakless, easy to maintain, and capable of better isolating the graphitization furnace from the outside atmosphere and providing an oxygen-free environment for a graphitization process, thus ensuring the quality of the carbon fibres.

Total reflection axis focused carbon fibre graphitization furnace for laser tunnel

The invention discloses a laser tunnel furnace light beam micro-integration focusing method and device. The method comprises the followings steps: generating laser light through a high-power laser emitter, wherein the diameters of light spots are adjustable; introducing laser beams into a multi-pass spectrometer for uniformly splitting a single laser beam into a plurality of laser beams which are equal in energy and light spots; introducing the laser beams into a laser beam emitting head through an optical fiber, wherein the laser beam emitting head is fixed on a bracket; the extension line of the axis of an installing hole in the bracket intersects with the shaft core of a carbon fiber; a plurality of laser beams are focused on the carbon fiber passing through the center of the bracket. According to the laser tunnel furnace light beam micro-integration focusing method and device, a plurality of laser beams which are equal in energy and light spots are generated through the integration function of the multi-pass spectrometer, so that the problem of high cost caused by the use of a plurality of laser generators is solved. The laser emitting head bracket has a special structure, so that circumferential focusing of the laser beams is ensured, the aim of uniformly heating the carbon fiber in the circumferential direction is further fulfilled, and the problem of energy loss caused by lens focusing is solved.

Laser tunnel furnace light beam micro-integration focusing method and device

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Laser tunnel furnace light beam micro-integration focusing method and device