PRIMETALS TECHNOLOGIES AUSTRIA GMBH

A method for cooling a rolled product in a cooling section which is located upstream of a finishing train of a hot rolling mill. The cooling section includes a cooling device which can deliver a coolant flow of a coolant onto a rolled product surface of the rolled product. In the method, a coolant flow is delivered, by means of each cooling device and in each cooling section pass, onto the rolled product surface, which flow is set to a set value that is assigned to the relevant cooling device for the cooling section pass. The set values for a cooling section pass are determined in a simulation of the cooling section pass so that surface temperatures, determined in the simulation, of the rolled product surface upon leaving active regions of the cooling device do not exceed a minimum value for a surface temperature of the rolled product surface.

A method for cooling a rolled product in a cooling section which is located upstream of a finishing train of a hot rolling mill. The cooling section includes a cooling device which can deliver a coolant flow of a coolant onto a rolled product surface of the rolled product. In the method, a coolant flow is delivered, by means of each cooling device and in each cooling section pass, onto the rolled product surface, which flow is set to a set value that is assigned to the relevant cooling device for the cooling section pass. The set values for a cooling section pass are determined in a simulation of the cooling section pass so that surface temperatures, determined in the simulation, of the rolled product surface upon leaving active regions of the cooling device do not exceed a minimum value for a surface temperature of the rolled product surface.

A method for operating a combined casting/rolling installation: A casting machine ( 4 ) of the combined installation ( 2 ) produces a cast product ( 40 ) and a rolling mill ( 6, 8 ) of the installation ( 2 ) produces a rolled product ( 42 a, 42 b ) from the cast product ( 40 ). The installation ( 2 ) has a control device ( 12 ) with a measuring unit ( 14 ) and a controller ( 16 ). The measuring unit ( 14 ) detects a rolled-product property, generates a measurement signal dependent on that property and transmits the measurement signal to the controller ( 16 ), and the controller ( 16 ) uses the measurement signal to generate a control signal for the casting machine ( 4 ) based on a control algorithm and transmits the control signal to the casting machine ( 4 ) which uses the control signal to set a casting parameter. The detected rolled-product property is a temperature profile of the rolled product ( 42 a, 42 b ) in the width direction thereof and the casting parameter that is set by the casting machine ( 4 ) using the control signal is a cooling parameter of the casting machine ( 4 ).

Energy-efficient production of a ferritic hot-rolled strip ( 6 ) in an integrated casting-rolling plant ( 1 ), which modifies the known processes for producing a ferritic hot-rolled strip ( 6 ) in an integrated casting-rolling plant ( 1 ) so that the ferritic hot-rolled strip ( 6 ) can be produced significantly more energy-efficiently but nevertheless has good metallurgical properties and a good surface quality.

A lining machine that includes a base frame, a rail group, a feed apparatus, a lift apparatus and a working platform, the rail group being mechanically fastened to the base frame and the rail group having at least one rail arrangement. The lift apparatus has a roller carriage and a lift unit located on the roller carriage, the roller carriage being provided on the rail arrangement so as to be movable between an installation position and an operating position. The lift unit is connected to the working platform and is designed to lower the working platform into the converter via the converter opening, and the feed apparatus has a roller conveyor, one end of which ends at the lift apparatus.

A device and a method for depositing undissolved materials, in particular undissolved silicon compounds, from a pickling fluid in a pickling plant. A pickling circuit of the pickling plant has a pickling tank for pickling metal strips, a return line between the pickling tank and a circuit tank, a circulation pump for circulating a main volume flow of pickling fluid from the pickling tank, and a heating device arranged in a pressure line between the circuit tank and the pickling tank. The device includes a flocculation device for introducing at least one flocculant into the main volume flow, and a deposition device in the circuit tank and preferably designed as an inclined clarifying device, for the sedimentation of undissolved materials directly from the main volume flow. When pickling silicon-containing steel strips (electrical steel strips), an at least two-stage flocculation can be carried out using two or more mixing zone containers.

The invention relates to a coil-transporting carriage with adjustable retaining arms and to a method for the reliable handling of metal coils of small external diameter, or of sleeves, on a coiler mandrel. The coil-transporting carriage has a vertically displaceable coil saddle for accommodating a coil or a sleeve, also has two retaining arms for stabilizing the coil or the sleeve, the retaining arms being arranged opposite one another on the coil saddle and being pivotable by means of rotary drives, and additionally has a second drive unit for moving the coil-transporting carriage. For pulling off from a coiler mandrel, the coil saddle is positioned against a coil located on the coiler mandrel and the retaining arms are pivoted onto the coil. For pushing onto a coiler mandrel, first a sleeve is placed on the coil saddle of the coil-transporting carriage and is thereby guided by the retaining arms.

The invention relates to a roll stand, comprising: a working roll, which is mounted in the roll stand floatingly and for rotation about an axis of rotation extending axially and which has two axially opposite end faces; and at least one bearing assembly, which is arranged on one of the two end faces of the working roll and by means of which the working roll is floatingly supported in the roll stand and which has a housing, in which the working roll is mounted using a fixed bearing. According to the invention, the bearing assembly has a supporting device, by means of which the bearing assembly can be axially supported in the roll stand.

An optimization method in which a computer ascertains expected values (E 1 ) for actual variables (I 1 ) of a technical process based on values (R) for target variables (Z 1 ) of the technical process that attain the values (R) as far as possible. From data records (D), the computer provisionally selects a number (n 1 ) of records (D) in which the variables (I 1 ) display a minimum distance from the values (E 1 ). The computer then ascertains expected values (E 2 ) for the actual variables (I 2 ) based on the values (R) and the values (E 1 ). From the provisionally selected data records (D), the computer selects a predetermined second number (n 2 ) of data records (D) in which the variables (I 1 , I 2 ) display a minimum distance from the values (E 1 , E 2 ). The computer ascertains set values (S) for the variables (Z 2 ) for a yet-to-be-executed cycle to attain variables (Z 1 ) as close to possible to the values (R).

The invention relates to a conveying system for conveying a material to be conveyed along a conveying path. The conveying system includes a conveying chamber in which the conveying path is arranged. At least one component of a conveying mechanism for conveying the material to be conveyed is arranged outside the conveying chamber. The conveying mechanism includes a traction drive having at least one traction element by means of which carrying elements can be moved in order to convey the material to be conveyed. The carrying elements are arranged in the conveying chamber and protrude through a through-opening out of the conveying chamber. Inside the conveying chamber and/or in the region of the through-opening, the surfaces of the carrying elements are at least partially provided with a thermal insulation material.