| 摘要 |
<p>Glass fiber forming apparatus adapted to receive and emit molten glass, which apparatus has a high density coating of a material not of the platinum group removably bonded to the sidewalls, the bottom wall and to tubular projections extending outwardly from the bottom wall, which coating is of sufficient thickness to retain oxides of the platinum group metals which form and migrate thereto from the apparatus during service at a temperature of molten glass, and which coating is capable of being removed after service for reclamation of the platinum group metals. The use of the apparatus is an improvement in the manufacture of glass fibers, in that very uniform fiber diameters are produced for extended periods of time by the maintenance of the apparatus in critical alignment with heat shielding members and further in that the life of the apparatus is extended.</p> |
