Abstract:
Es wird eine Produktionsanlage zur Erzeugung von warmgewalzten Flachprodukten, bestehend aus einer mehrgerüstigen Walzstraße (15), einem Auslaufrollgang (22) mit Einrichtungen zur Kühlung (7,17) des Walzbandes und nachgeordneten Wickelmaschinen (16,18) zum Aufwickeln des Bandes vorgeschlagen, mittels derer unter erwünschter Begrenzung der Auslaufgeschwindigkeit Bandmaterial mit sehr kleinen Dicken gewalzt werden kann.
Abstract:
A plain carbon steel strip (12) is continuously cast in a twin roll caster (11) and passes to a run out table 17 on which it is subjected to accelerated cooling by means of cooling headers (18) whereby it is cooled to transform the strip from austenite to ferrite at a temperature range between 850 °C and 400 °C at a cooling rate of not less than 90 °C/sec, such that the strip has a yield strength of greater than 450MPa. The strip after casting and before cooling is passed through a hot rolling mill to reduce the thickness of strip by at least 15% and up to 50%.
Abstract:
A plain carbon steel strip (12) is continuously cast in a twin roll caster (11) and passes to a run out table 17 on which it is subjected to accelerated cooling by means of cooling headers (18) whereby it is cooled to transform the strip from austenite to ferrite at a temperature range between 850 °C and 400 °C at a cooling rate of not less than 90 °C/sec, such that the strip has a yield strength of greater than 450MPa. The strip after casting and before cooling is passed through a hot rolling mill to reduce the thickness of strip by at least 15% and up to 50%.
Abstract:
Um in einem in einer Warmbandwalzanlage, bestehend aus einer Fertigstraße (1), einer Kühlstrecke (2), einem Treiber (3) und einer Haspelanlage (4), gewalzten Metall (5) gewünschte Planheits- und Spannungsverhältnisse sowie ein gewünschtes Gefüge bzw. mechanische Eigenschaften einzustellen, wird vorgeschlagen, nach der Fertigstraße (1) das Band (5) einer weiteren Dickenreduzierung zu unterziehen.
Abstract:
Process for producing a high-strength steel strip, in which liquid steel is cast in at least one continuous-casting machine (1) with one or more strands to form a slab and, utilizing the casting heat, is conveyed through a furnace device (7), undergoes preliminary rolling in a preliminary rolling device (10) and, in a final rolling device (14), is finishing-rolled to form a steel strip with the desired final thickness, and, in a continuous, endless or semi-endless process, the slab undergoes preliminary rolling in, essentially, the austenitic range in the preliminary device (10) and, in the final rolling device (14), is rolled in the austenitic range or, in at least one stand of the final rolling device (14), is rolled in the two-phase austenitic-ferritic range, the austenitic or austenitic, ferritic rolled strip, after leaving the final rolling device (14), is cooled rapidly in order to obtain the desired structure.
Abstract:
The invention relates to a combined regulating system for producing defined product characteristics in the rolling of austentic, mixed austentic and ferritic and ferritic steel qualities, using a measuring method to determine the roll gap of a roll pair by detecting the absolute position of the work and back-up rolls on the side facing away from the roll gap by optical position measurement. The upper edge of the top roll or the lower edge of the bottom roll is detected relative to the absolute position of the rolls, in segments over the barrel length, by means of adjacent sensors situated along the roll. The measuring results are incorporated in a suitable regulating operation that influences the geometry of the roll gap and rolled stock using a model that takes into account the influences of the deflecting and roll adjusting systems, the deflection of the rolls, flattening between the rolls, flattening between the work roll and the rolled stock and the wear and thermal crowning of the rolls. In addition to the necessary absolute thickness, the regulating operation ensures that the necessary thickness profile and the flatness criteria are produced.
Abstract:
The invention relates to a method and installation for the continuous production of hot-rolled flat products made of a thin casting strip, comprising a casting machine (12) for producing a casting strip, a device for cooling the casting strip in the presence of a protective gas (2), a single-stand roughing train (3), a multiple-stand finishing train (5), a device (4) permitting a choice of cooling, heating or maintaining the temperature of the hot-rolled strip between the roughing train and finishing train (3, 5), shears (6) for separating the hot-rolled strip from coil to coil, a delivery roller table having devices for cooling (8, 9) the rolled hot strip and coiling machines (7, 10) mounted downstream from the production line for rolling up the finished strip.
Abstract:
Process for producing a high-strength steel strip, in which liquid steel is cast in at least one continuous-casting machine (1) with one or more strands to form a slab and, utilizing the casting heat, is conveyed through a furnace device (7), undergoes preliminary rolling in a preliminary rolling device (10) and, in a final rolling device (14), is finishing-rolled to form a steel strip with the desired final thickness, and, in a continuous, endless or semi-endless process, the slab undergoes preliminary rolling in, essentially, the austenitic range in the preliminary device (10) and, in the final rolling device (14), is rolled in the austenitic range or, in at least one stand of the final rolling device (14), is rolled in the two-phase austenitic-ferritic range, the austenitic or austenitic, ferritic rolled strip, after leaving the final rolling device (14), is cooled rapidly in order to obtain the desired structure.