METHOD OF ROLLING FOR MANUFACTURE OF FLAT ARTICLES AND ROLL TRAIN Russian patent published in 2014 - IPC B21B1/46 

FIELD: metallurgy.

SUBSTANCE: method includes stages, during which a thin slab with the thickness 30-90 mm is fabricated (35-70 mm is preferable), a slab is held at the specified temperature and/or the slab can be heated for rolling, where it is rolled repeatedly at the reversal rolling mill (14), containing, at least, one stand (15) for reversal rolling, in front of which, at least, a furnace (16a), equipped with a baller, is located, and behind which the furnace (16b), equipped with a baller, is located, the strip after rolling is reeled on at least in reeler (19a, 19b), to obtain the relevant strip coil with the weight 20-30 tons, and the obtained strip is cooled between the reversal rolling mill (14) and, at least, one named reeler (19a, 19b). Before the slab holding stage at the given temperature and/or of its possible heating a thin slab is separated, for example, by its cutting to the size by shears to get a piece of slab, the weight of which exceeds the coil weight. Already after the first rolling operation in the reversal rolling mill (14) the thickness of the piece of slab is decreased down to 20-25 mm, so that it could be at once reeled in the furnace (16b), equipped with baller located downstream the stand (15). During the most part of the latter rolling operation in the reversal rolling mill (14), pre-determining the final width of the strip, the strip is located simultaneously in the furnace (16a), in the stand (15) of the reversal rolling mill (14) and in the respective among the named reelers (19a, 19b), and the rolling process is performed without violation of continuity of the whole piece of slab, from which at least 2 coils of ready strip are formed. The roll train comprises the relevant equipment.

EFFECT: improvement of uniformity of metal temperature along the coil length, optimisation of the mode of passing the rolling stands.

11 cl, 5 dwg