GB1338389A - Feed device for continuous casting machines for the production of a continuous metallic rod - Google Patents

Abstract

1338389 Continuous casting I PROPERZI 4 Dec 1970 [19 Dec 1969 20 Jan 1970 22 April 1970] 57797/70 Heading B3F [Also in Division F4] A tundish 1, having a lateral nozzle 18 through which molten metal, e.g. copper, is fed to a grooved casting wheel 2 which co-operates with a metal belt 3, has an internal metal-holding cavity eccentric to the longitudinal axis of the nozzle, so that the tundish 1, and its mounting ribs 17 may be tilted by motor-driven means (not shown) about the axis of nozzle 18, to vary the head of molten metal, and thus its flow velocity through nozzle 18. The nozzle 18 may be shaped to fit into the groove of the casting wheel. In a modification, Fig. 15, one or more adjustable oxy-acetylene or oxy-methane burners 51 and/or 49 may, by reduction of oxygen feed to the flame, provide a protective reducing gas atmosphere both within the tundish 42 and in the space between the nozzle 41 and a surrounding refractory-lined protective sheath 45 which space communicates with the interior of the tundish via passage 50. The heated nozzle 41 is thus kept free from solid metal obstructions, and thermal stresses and corrosive oxidation are reduced. Moreover the protective gases form a jacket around the molten metal jet leaving the outlet bush 44 of the nozzle. The bush 44 may be replaced by another bush of the same or a different outlet cross-section and/or length. Motorized slide means are provided to adjust the position of the tundish and its casting nozzle relative to the groove of the casting wheel 2. In a variation (Fig. 10, not shown) the cooling position may be at the summit of the casting wheel.