Abstract: The invention relates to an inspection system 10 for rolled products 20 of a milling station, comprising at least one plate turning device 11 with an arrangement of transferring turning arms 12 located on a turning shaft 14 and of receiving turning arms 13 located on a turning shaft 15. According to the invention it is thereby provided that the turning shaft 15 of the receiving turning arms 13 is arranged offset with respect to the turning shaft 14 of the transferring turning arms 12. The invention relates in addition to a method for examination of the surface of rolled products 20 of a milling station.

Abstract: A casting system (1) having a reservoir (2) for a fluid (3), such as, in particular, liquid metal, a dispensing chamber (5) connectable by a connection (4) with the reservoir, and an application device (7) with which the fluid is spreadable to a predetermined width and with which it is spread on a movable strip (9), with the connection between the dispensing chamber and the application device being formed as a closed tubular connection including a plurality of tubes (6) arranged in a pattern corresponding to a pattern of a spread hand-held fan.

Abstract: The invention relates to a device (1) for cooling a metal strip (2) between two rolling stands (3), wherein the strip (2) is led over a leading-over element (4) of a flat form and arranged under the leading-over element (4) is a spraying element (5), which directs cooling medium (7) onto the underside (8) of the strip (2) through at least one opening (6) in the leading-over element (4). To achieve an improved spray pattern, the invention provides that at least two openings (6) are introduced into the leading-over element (4), said openings being arranged next to each other in a direction transverse (Q) to the conveying direction (F) of the strip (2) and having an elongated form, wherein the longitudinal axis (9) of the opening (6) is aligned at an angle (?) with respect to the conveying direction (F) of the strip.

Abstract: The invention relates to a device for injecting gas into a metallurgical vessel, comprising a blowing head (5) having a feed line (5b) for delivering gas, in particular oxygen, to the blowing head (5), and at least one Laval nozzle (1) disposed on the blowing head (5), said nozzle having an inlet section (2) which conveys the gas and an outlet section (3), wherein the gas is delivered to the inlet section (2) via the feed line (5b) and leaves the outlet section (3) at supersonic speed, wherein the Laval nozzle (1) comprises at least one first nozzle part (2, 3) and a second nozzle part (7), wherein the nozzle parts (2, 3, 7) are adjustable relative to one another by changing the geometry of the Laval nozzle (1).

Abstract: The aim of the invention is to produce stainless steel for all stainless steel products both in the austenitic and the ferritic range, based on liquid pig-iron and FeCr solids, without using a supply of electrical energy. According to the invention, the liquid pig-iron, after being pre-treated in a blast furnace (1), is subjected to a DDD treatment (dephosphorization, desiliconization and desulfuration), is heated, finished or alloyed and deoxidated. The quantity of slag-free liquid pig-iron that has been pre-treated in the blast furnace (1) is separated and introduced into two classic “twin” AOD-L converters (2, 3), where the required chemical process steps (of the DDD treatment and of the heating, decarburization and alloying stages) take place in parallel contrary processes using autogenous chemical energy, the DDD treatment being carried out first in the first twin AOD-L converter (2) and the decarburization being carried out first in the second twin AOD-L converter (3).

Abstract: When rolling hot-rolled strips, different draughts per pass might occur during the rolling operation over the length of the roll gap, due to changes in the hardness of the rolling stock, to the roll gap itself or to the geometry of the incoming rolling stock. These different draughts per pass lead to lateral deviations and shifts of the rolling stock in the roll stand and to a lateral bending of the outgoing hot-rolled strip. In order to avoid these defects by intentionally influencing the geometry of the rough-rolled strip, it is proposed to interconnect in at least one roughing-down stand a dynamic positioning in the roughing-down stock (1) with fast and powerful lateral guides (8,9) arranged before and after the roughing-down stand (1), by corresponding regulation operations, in such a way that a grainy or tapering bloom (4) is shaped into a straight and taper-free roughed-down strip (5) in one or more passes, in continuous or reciprocating operation.

Abstract: The invention describes a polishing device (100) for polishing a component (200), comprising an elongated polishing element (110), which is directed against the surface (205) of the component (200) parallel to the longitudinal axis (z) of the component (200). In this case, the polishing element (110) is formed in adjustment subsegments (110-1, 110-2, . . . 110-n) in its longitudinal extent. A housing (120) serves for receiving the polishing element (110). Arranged between a bearing surface (123 of the housing (120) and the polishing element (110) is a pressure-exerting element (130), for placing and pressing the polishing element (110) against the component (200). In this case, the pressure-exerting element (130) is formed as at least one flexible tube to which pressure can be applied.

Abstract: A transport device for slabs, which device is arranged between at least two casting machines and at least one rolling mill. The transport device has at least two linear and stationary conveyor sections on which a slab can be conveyed in a conveying direction. The transport device further has at least two linear conveyor sections which are arranged to be pivotable in order to convey a slab at an angle to the conveying direction. In order to improve guidance of the slabs and provide a flexible transport of the slabs from the casting machines to the rolling mill, the at least two linear, pivotable conveyor sections are arranged to be pivotable independently of one another.

Abstract: An installation for producing stainless steel for all stainless steel products both in the austenitic and the ferritic range, based on liquid pig-iron and FeCr solids, without using a supply of electrical energy. The liquid pig-iron, after being pre-treated in a blast furnace, is subjected to a DDD treatment (dephosphorization, desiliconization and desulphurization), is heated, finished or alloyed and deoxidated. The quantity of slag-free liquid pig-iron that has been pre-treated in the blast furnace and a DDD device is separated and introduced into two classic “twin” AOD-L converters, where the required chemical process steps (of the heating, decarburization and alloying stages) take place in parallel contrary processes using autogenous chemical energy. The heating stage is carried out first in the first twin AOD-L converter and the decarburization is carried out first in the second twin AOD-L converter.

Abstract: The invention relates to a device for handling and/or transporting back-up rolls and/or work rolls (4a, 4b) of a roll stand, preferably at least in pairs, especially in sets, between the roll stand arranged in a roll ball and a roll workshop, and in the roll workshop. Said device comprise a roll-changing pit that extends transversely to the roll direction of the roll stand, form the roll stand towards the roll workshop, and has displacement devices for at least one pair or set of dismantled back-up or work rolls (4a, 4b), and a roll-changing stand (8) that is arranged transversely to the roll-changing pit in the roll workshop and can be moved across said pit in or away from the roll direction of the roll stand. The aim of the invention is to enable the time required for a back-up roll change to be reduced and the back-up roll change to be simplified.

Abstract: The invention relates to a method of flying changing of working rolls in continuous casting and rolling installations and hot strip rolling mills, in particular in continuous hot strip rolling mills, wherein for exchange of working rolls by opening a rolling stand, those are disengaged from a to be rolled hot strip. According to the invention a regulated strip tension that can substitute the tension of the open rolling stand, is applied to the to-be-rolled hot strip with at least one hold-down roller that is introduced in a rolling line.

Abstract: A device for coiling thin metal strip, especially hot-rolled or cold-rolled thin steel strip, includes a drivable coiler mandrel which can be adjusted in diameter by expandable segments and can be adjusted to a coil inside diameter and to a diameter for detaching the finished coil. The device further includes an expansion adapter which can be inserted into the open eye of the coil and is mounted on a holder with a guide.

Abstract: There is described a method for applying a coolant to a rolled product and/or to at least one cylinder of a roll stand provided with a rolling gap. During the method the following steps can occur: determining a total cooling rate applicable according to the effective power in the rolling gap, determining the cooling rate for several areas according to a flatness distribution determined b a flatness measuring system, wherein the difference in the cooling rate is determined by comparing the totality of the thus determined cooling rates with a predetermined total cooling rate and is used for determining the components of an additional cooling rate for the areas taking into account the top and lower limits of the cooling rate thereof. Said procedure is repeated in such a way that the coolant differences remain above a predefinable value.

Abstract: The invention relates to double trimming shears having a stationary bottom knife and a driven top knife which can be raised and lowered, wherein the top knife is arranged on a top knife carriage (12) guided by means of a carriage guide (10), wherein a first eccentric shaft (14) and a second eccentric shaft (16) on the carriage guide (10) is provided in order to guide the carriage guide (10) if an inclined position of the top knife carriage is to be prevented. This is achieved in that the first eccentric shaft (14) and the second eccentric shaft (16) are interconnected via a synchronization means (18).

Abstract: A method of equalizing a solidification process of molten metal produced, in particular, during strip casting, includes subjecting the molten metal to an electromagnetic stirring process, with a magnetic field is applied to the molten metal located upstream of the area of the electromagnetic stirring process. The electromagnetic stirring includes applying, during the solidification process, at least one electromagnetic field to an already solidified, external region (11) of the molten metal (10).

Abstract: A method for hot rolling a metal strip or metal sheet, wherein 1.a) the slab or the strip or sheet is subjected in a first step to one or more reshaping actions in a hot rolling mill for producing a uniform, fine, recrystallised austenite structure and 2) the slab or the strip or sheet is then subjected in a second step to cooling for producing a fine-grain structure. The slab or the strip or sheet is subjected to heating between at least two roll stands of the hot rolling mill during performance of the step 1.a). The roll stands are arranged to follow one another in a rolling direction and in each of which the slab or the strip or sheet is subjected to reshaping. A heater for heating the rolling stock is arranged between at least two of the roll stands.

Abstract: The invention relates to a roller hearth furnace (1) for heating and/or temperature equilibration of continuous cast products (2), comprising a first series of rollers (13) running in the longitudinal direction (12) and a second parallel series of rollers (15) on the outlet side (14), wherein a buffer zone (16) with lifting elements (17) for the perpendicular transport of the continuous cast product (2) is arranged between the series of rollers (13, 15). Furthermore, alternative arrangements for a further process route (28) are provided.

Abstract: In an installation part (1) in a rolling stand for receiving a roll journal (24) having a journal bush (24) of a roll which is used in the processing of steel and non-ferrous metals, wherein the installation part (1) has a cambered side (3) which faces the roll and a run-out side (4) which lies opposite the cambered side (3), having lubricant receiving spaces (7, 15, 16) on the cambered side (3), at least one housing tongue (23) is provided on the cambered side (3) for the at least partial delimitation of the lubricant receiving spaces (7, 15, 16) with respect to one another and for the formation of a gap (25) with the journal bush (24), the width of which gap (25) is below a predefined gap width threshold value.

Abstract: 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.

Abstract: In order to carry out foaming of a slag having a high ratio of chromium oxide having values of often above 20% of a non-corrosive melt in an AOD (Argon Oxygen Decarburization) or MRP (Metallurgical Refining Process) converter or CONARC SSt for stainless steel by adding a foam material, according to the invention a previously defined mixture (5) of a metal oxide, iron carrier, carbon and binding material in the form of pellets or briquettes (4) is introduced into the converter, which reacts in a chemically reducing manner under the slag layer (2) due to the high ambient temperature, wherein gaseous carbon monoxide formed in particular by means of the reduction process of the metal oxide with the carbon within the pellets or briquettes (4) induces the slag foaming with the gas bubbles (7) thereof and wherein the specific density of the pellets or briquettes (4) and the resolve time of the reduction process are selected so that optimal bubble formation in respect of size and duration is achieved.