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AssigneeSMS Siemag Aktiengesellschaft
InventorsDieter Rosenthal, Stephan Krämer, Jürgen Seidel, Frank Benfer
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A method and a device for producing a metal strip by continuous casting and rolling, in which a thin slab is initially cast into a casting machine, and is subsequently rolled in at least one rolling train using primary heat from the casting cycle. The cast thin slab is passed between the casting machine and the at least one rolling train and at least one holding oven as well as at least one induction oven. The holding oven and the induction oven are activated or deactivated according to a selected mode of operation, that is, a first mode of operation for the continuous production of the metal strip and a second mode of operation for the discontinuous production of the metal strip.
A method for producing metal strip (1) by direct strand reduction, in which a thin slab (3) is first cast in a casting machine (2) and then rolled in at least one rolling train (4, 5) with utilization of primary heat of a casting process, wherein the cast thin slab (3) passes through at least one holding furnace (6) and directly after the holding furnace through an induction furnace (7, 8, 9), between the casting machine (2) and the at least one rolling train (4, 5) or within the rolling train (5), where the holding furnace (6) and the induction furnace (7, 8, 9) are activated or deactivated and controlled by open-loop or closed-loop control as a function of a selected mode of operation, namely, a first mode of operation of continuous production of the metal strip (1) and a second mode of operation of discontinuous production of the metal strip (1), wherein a first shear (13) is arranged behind the casting machine (2) for cutting thin slabs (3) during the second, discontinuous mode of operation, and a further shear (14) is arranged ahead of a coiler for cutting the strip during the first, continuous mode of operation, wherein the selection of the mode of operation is made as a function of at least one of the following:
An installation for producing a metal strip (1) by direct strand reduction, which comprises a casting machine (2), in which a thin slab (3) is first cast, and at least one rolling train (4, 5), which is located downstream of the casting machine (2) and in which the thin slab (3) is rolled with utilization of primary heat of a casting process, wherein at least one holding furnace (6) and an induction furnace (7, 8, 9) is installed between the casting machine (2) and the at least one rolling train (4, 5) or within the rolling train (5), where control means are present with which the holding furnace (6) and/or the induction furnace (7, 8, 9) is activated or deactivated and controlled by open-loop or closed-loop control as a function of a selected mode of operation, namely, a first mode of operation of continuous production of the metal strip (1) and a second mode of operation of discontinuous production of the metal strip (1), wherein the control means are operative so that the induction furnace (7, 8, 9) is activated or deactivated and controlled by open-loop or closed-loop control as a function of a selected mode of operation, wherein a first shear (13) is arranged behind the casting machine (2) for cutting thin slabs (3) during the second, discontinuous mode of operation, and a further shear (14) is arranged ahead of a coiler for cutting the strip during the first, continuous mode of operation, wherein the selection of the mode of operation is made as a function of at least one of the following:
A method for producing metal strip (1) by direct strand reduction, in which a thin slab (3) is first cast in a casting machine (2) and then rolled in at least one rolling train (4, 5) with utilization of primary heat of a casting process, wherein the cast thin slab (3) passes through at least one holding furnace (6) and directly after the holding furnace through an induction furnace (7), between the casting machine (2) and the at least one roiling train (4, 5) or within the rolling train (5), where the holding furnace (6) and the induction furnace (7, 8, 9) are activated or deactivated and controlled by open-loop or closed-loop control as a function of a selected mode of operation, namely, a first mode of operation of continuous production of the metal strip (1) and a second mode of operation of discontinuous production of the metal strip (1), wherein a first shear (13) is arranged behind the casting machine (2) for cutting thin slabs (3) during the second, discontinuous mode of operation, and a further shear (14) is arranged ahead of a coiler for cutting the strip during the first, continuous mode of operation, the method further including selecting the first, continuous production mode or the second, discontinuous production mode based on at least one boundary characteristic selected from the group consisting of:
A method for producing metal strip (1) by direct strand reduction, in which a thin slab (3) is first cast in a casting machine (2) and then rolled in at least one rolling train (4, 5) with utilization of primary heat of a casting process, wherein the cast thin slab (3) passes through at least one holding furnace (6) and directly after the holding furnace through an induction furnace (7, 8, 9), between the casting machine (2) and the at least one rolling train (4, 5) or within the rolling train (5), where the holding furnace (6) and the induction furnace (7, 8, 9) are activated or deactivated and controlled by open-loop or closed-loop control as a function of a selected mode of operation, namely, a first mode of operation of continuous production of the metal strip (1) and a second mode of operation of discontinuous production of the metal strip (1), wherein a first shear (13) is arranged behind the casting machine (2) for cutting thin slabs (3) during the second, discontinuous mode of operation, and a further shear (14) is arranged ahead of a coiler for cutting the strip during the first, continuous mode of operation, the method further including selecting the first, continuous production mode for high casting speeds and/or thin end thicknesses, and selecting the second, discontinuous mode of production when final rolling temperature cannot be securely maintained due to low casting speeds or to save energy or due to additional temperature loss.
Dependencies are inferred from the claim text.