GB1068804A - Continuous casting - Google Patents

Abstract

1,068,804. Continuous casting; straightening. DAVY AND UNITED ENGINEERING CO. Ltd. April 29, 1965 [April 29, 1964], No. 17724/64. Headings B3E and B3F. In a continuous casting plant, Figs. 1 and 2 (not shown), in which molten metal cast in a vertical mould is withdrawn from the mould along an arcuate path leading to a horizontal path, means in the form of driven rolls are located at the lower end of the arcuate path to effect the casting withdrawal. The withdrawal rolls (77), Fig. 11 (not shown), are incorporated in a levelling unit (32) which effects straightening of the cast bar into the horizontal path. Rollers (14) support the casting as it leaves the mould and a plurability of guide rollers (15) are located around the arcuate path and are carried in three groups in frames (19), (20) and (21), Fig. 3 (not shown). The guide roll sections are adjustable to accommodate castings of different sections and each guide roll frame has means associated therewith for cooling the casting. Further cooling is applied to the casting at the end of the guide roll sections, in which steam or compressed air is directed on to the casting, in opposition to its movement, by nozzles (26) and baffles (27). A starter bar is used at the commencement of the casting operation, the bar being composed of flexible links and means are provided for removing sections of the starter bar when it has passed through the guiding and withdrawal units. Two alternative starter bar removal means are desembled, the first Figs. 4 and 5 (not shown), including arms which pivot about an axis parallel to that of the bar and are adapted to raise the bar out of the path of the casting and in the second a framework, Fig. 10 (not shown), which supports vertical movable platforms which are adapted to raise given sections of the bar clear of the casting. Also, in an alternative embodiment the support rolls (14) beneath the mould may be replaced by a removable frame which carries the rolls, Fig. 9 (not shown), to facilitate ease of access for maintenance.