Process for the production of a strio, a prestrip or a slab

The installation incorporates a run-through mould (1) with a constant cross-section over its entire length, a first forming section (5-9) for the slab with liquid core, a second forming section (10) for the solidified slab, a third forming section (17) made up of single or multiple hot-rolling units (19), and cutting-off station (13) between the second and third forming stations. The forming sections are activated singly, in pairs or all together, dependent on whether slab (not previously forming operations) preliminary strip, or strip (including the thinnest possible) is produced. Only the second and third forming sections are activated for high-strength tube steels, as well as for austenitic and duplex steels. The second forming stage is preceded by a scale removal process. The first forming section (5-9) consist of rolls (7) which are hydraulically adjustable against one another. A temp. equalisation furnace (15) is foreseen between the cutting-off station (13) and the third forming section (17).