| 摘要 |
PURPOSE:To stabilize the fiber-formation of glass in the low cost and to attain the decrease of the yarn cutting or the like by providing the fins for the cooling wherein the treatment increasing the heat absorption capacity is performed on the surface nearly to the tips of a nozzle part. CONSTITUTION:In a producing apparatus of a glass fiber wherein a refractory 16 is fitted to the inside of a vessel 14 made of stainless steel in a base of a vessel body 10 holding the melted glass and a nozzle part 12 provided with the many orifice-shaped tips 18 in the base part thereof is provided, it is constituted so that the fins 22 fitted to a bottom of the nozzle part 12 via a bracket 20 are provided and the heat dissipation of the melted glass cones 24 flowed out of the tips 18 is absorbed. The above-mentioned fins 22 is made of Pt-Rh alloy as a base material and performed with the treatment increasing the heat absorption capacity such as the treatment increasing the surface roughness due to the coating of the platinum black plating on the surface or the formation of the fine unevennesses by the mechanical work. Thereby the above-mentioned heat absorption is sufficiently performed and the glass long fibers 24a are stably spun. |
