| 摘要 |
<p>1,221,909. Continuous casting; casting processes. STANDARD TELEPHONES & CABLES Ltd. 1 Oct., 1969, No. 48283/69. Heading B3F. [Also in Division F4] A crucible 52, Fig. 5, is formed by a ring of water-circulating tubes which are so spaced at a mould part l that molten material 54A cannot escape between them. A charge 54 of material is melted by an induction coil 50 to form the melt 54A on a starter plug 55 which is lowered for continuous casting. The tubes 1, Fig. 4, depend from an inlet portion of an annular coolant water header 5, and, to communicate with an outlet portion, either contain an inner water return tube, Fig. 1 (not shown), or are of the hairpin type, Fig. 3 (not shown). Further tapered-end tubes 41 containing return tubes 43, may be interposed between the tubes 1 at the upper part of the crucible. The tubes, which may be flattened, are made of gold, silver or copper, alloys of these metals or one of these coated with another of these. The starter plug 2 may likewise be made of these metals, in which case it is independently water-cooled, or of refractory material or of the metal being melted. The melt 54A is kept away from the tubes 1 by the magnetic fields induced by the induction heater. A quartz enclosure may surround the apparatus to allow casting of chromitun to proceed in an inert or a hydrogen atmosphere.</p> |
