| 摘要 |
1,067,114. Continuous casting. SWISS ALUMINIUM Ltd. April 20, 1965 [April 20, 1964], No. 16571/65. Heading B3F. In a wheel type continuous casting machine, Figs. 1 and 2 (not shown) the wheel rim (2), which is cooled, is of channel section having a base and two side flanges (18), Fig. 3 (not shown). The rim co-operates with a cover band (3) to form a mould cavity. The rate of movement of the wheel and the feed of the molten metal into the mould cavity are so correlated that there is always molten metal above the bottom of the wheel rim forming the base of the mould. Molten metal is supplied to the mould cavity from a tundish (5) to the highest point reached by the base of the mould. The tundish has a spout (15) at one end which co-operates with the mould cavity, the level of metal in the tundish being controlled by a float (20) so as to ensure that the molten metal is always above the bottom of the wheel rim. The tundish is pivotable about a rod (14) at the end opposite to the spout and which may be held in contact with the wheel rim by gravity or by fluid means (16). Means are provided for removing impurities from the surface of the metal pool in the tundish before the metal enters the mould cavity. An alternative form of spout is indicated in Fig. 8 (not shown). To ensure that the spout has a good seal with the mould it is formed as an element separate from the tundish and is made of a compressible heat resistant material, e.g. asbestos paper or materials sold under the Trade Marks " MARINITE " or " FIBERFAX ".
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