GB1354758A - Secondary cooling of a continuous casting - Google Patents

Abstract

1354758 Continuous casting CONCAST AG 2 Sept 1971 [4 Sept 1970] 41101/71 Heading B3F In a secondary cooling zone, a continuous casting 5, Fig. 3, descends in the direction 18, Fig. 2, between opposed guiding and supporting elements 3(3<SP>1</SP>) with a grid of surfaces 10 which contact the casting surface and surround openings 11 through which nozzles 8 direct sprays of water on to the exposed surfaces of the casting 5. The guide surfaces 10 wipe the water from the casting surfaces as they pass. Where less support is required, e.g. near the edges of a slab casting and a guide surface may be omitted so that the resulting enlarged opening has at least two sprays through it. The elements comprise cast iron plates 30, 30<SP>1</SP> secured to a frame 31 on a framework 24 and the spacing between opposed plates is adjustable by means of hydraulic rams or bolts, Fig. 4 (not shown). The surfaces 10 may be in a lattice-like form, Fig. 5 (not shown). The openings 11 may be circular or elliptical or those nearest the reciprocated mould (to which the plates may be attached) may be transverse slots. Hinged deflector plates (in place of the guiding elements) are used at the narrow sides of a cast slab, to shed the water. As indicated in Fig. 3, the spray nozzles 8 are mounted in the openings 11 which have inclined lower boundaries 21 which lead the used water away to the rear and to drain ducts 23. Instead of each sprayed area corresponding generally to the size of the opening, a narrow region 20 at the bottom may be clear of the spray. The casting 5 is withdrawn by a straightening machine, from an arcuate guideway with rollers succeeding the guiding elements (3, 3<SP>1</SP>).