| 摘要 |
To ensure an adequate mixing of fresh melted glass with the molten glass already in the vessel of a glass spinning device, there is provided a vessel having at least one glass inlet (8) laterally offset from the position of the draw bar and located above a first reception trough (11) separated by a first weir (12) from a second reception trough (13) itself separated from the main body of the glass in the vessel by a second weir (14).
<??>It has hitherto been customary, in order to get the necessary mechanical strength and wear resistance at the temperatures involved, to use draw bars and nipples (25) of platinum. By embedding in the plate (21) a substantial portion of the length of the nipples (25), the onset of cooling can be delayed so that the temperature of the glass entering the nipple (25) can be at a lower level. This enables the use of temperature resistant alloys such as nickel chromium alloys in place of platinum to be acceptable. |
