PLANT AND METHOD FOR VACUUM DEGASSING LIQUID STEEL

    公开(公告)号:US20190002996A1

    公开(公告)日:2019-01-03

    申请号:US15748669

    申请日:2016-08-03

    Abstract: The invention relates to a plant for vacuum degassing liquid steel, comprising: at least one vacuum chamber 2, suitable to temporarily receive liquid steel inside it; a vacuum generation system 10, connected to said at least one vacuum chamber 2 via an intake duct 20. The vacuum generation system 10 comprises at least two compression stages connected together in series, of which: a first compression stage 11 works closer to the aforesaid at least one vacuum chamber and is composed of one or more screw pumps 110; and a second compression stage 12 works farther with respect to said at least one vacuum chamber 2 to bring the gases at least to atmospheric pressure and is composed of one or more liquid ring pumps 120.

    METHOD FOR SETTING A CONICITY OF A DIE OF A STRAND CASTING INSTALLATION, AND DEVICE FOR A STRAND CASTING INSTALLATION

    公开(公告)号:US20180318917A1

    公开(公告)日:2018-11-08

    申请号:US15970136

    申请日:2018-05-03

    Applicant: SMS GROUP GMBH

    CPC classification number: B22D11/202 B22D11/05 B22D11/225

    Abstract: A method for setting a conicity of a die of a strand casting installation during a casting procedure, including the steps of: measuring temperature values along a centric measuring path running in a casting direction along an adjustably disposed die wall; measuring temperature values along a peripheral measuring path running in a casting direction along the adjustably disposed die wall, wherein the peripheral measuring path runs between the centric measuring path and a lateral periphery of the die wall, and a spacing of the peripheral measuring path from the lateral periphery of the die wall is smaller than a spacing of the centric measuring path from the other lateral periphery of the die wall; determining a centric temperature distribution curve along the centric measuring path from the temperature values measured along the centric measuring path; determining a peripheral temperature distribution curve along the peripheral measuring path from the temperature values measured along the peripheral measuring path; determining a first area under the centric temperature distribution curve, and a second area under the peripheral temperature distribution curve; determining a difference between the second area and the first area; and setting the conicity of the die taking into account the difference.

    DEVICE FOR TRANSMITTING A TORQUE FROM A DRIVE DEVICE ONTO A ROLLER IN A ROLL STAND

    公开(公告)号:US20180161838A1

    公开(公告)日:2018-06-14

    申请号:US15735009

    申请日:2016-06-07

    Applicant: SMS group GmbH

    Abstract: A device for transmitting a torque from a drive device (200) onto a roller in a roll stand. In order to make the device independent from the continuous external supply of lubricant, the lubricant spaces in the two pivot bearings are connected to one another in a fluidically conductive manner by way of a feed channel and a return channel for the lubricant in the region of the spindle such that a closed circuit for the lubricant is formed, and that the least one pump device is integrated in the circuit in order to maintain the circulation of the lubricant in the circuit.

    CONVERTER
    85.
    发明申请
    CONVERTER 审中-公开

    公开(公告)号:US20180100207A1

    公开(公告)日:2018-04-12

    申请号:US15565077

    申请日:2016-04-01

    Applicant: SMS Group GmbH

    Inventor: RALF NÖRTHEMANN

    Abstract: A converter for the production of steel by a blowing process from a substantially liquid raw material, in particular pig iron, includes several injectors which are dispersed in the sidewall of the converter about the converter inner circumference and directed towards the bath level for refining the pig iron. The injectors are designed as supersonic nozzle, which are surrounded by a ring nozzle forming an enveloping gas jet. The injectors are oriented at an angle of max. 43° in relation to the bath surface, with oxygen being introduced through the supersonic nozzle and a mixture of compressed air and natural gas being introduced through the ring nozzle. The jet pulse for the oxygen jet fed through the supersonic nozzle is dimensioned such that an infiltration of the oxygen jet into the melt bath is ensured.

    Method and device for producing a metal strip in a continuous casting and rolling process

    公开(公告)号:US09937539B2

    公开(公告)日:2018-04-10

    申请号:US15109176

    申请日:2014-12-23

    Applicant: SMS Group GmbH

    Abstract: The invention relates to a method for producing a metal strip (1) in a continuous casting and rolling process, in which a slab is first cast in a casting machine and is then fed to a finishing rolling mill situated downstream in the direction of feed (F) of the strip (1), where it is rolled. According to the invention, in order to enable the recycling of scrap while achieving a compact design, the following steps are performed in the event of a planned or unplanned production interruption in the finishing rolling mill: a) cutting through the strip (1) at a point (4) between the casting machine (2) and the finishing rolling mill by means of a cutting device (5); b) feeding the part of the strip (1) that follows the cut into a strip store (6) by means of a driver (7), the driver (7) being situated downstream of the cutting device (5) in the direction of feed (F); c) cutting through the strip (1) a second time by means of the cutting device (5) and cutting the following part of the strip (1) into pieces by means of the cutting device (5); d) cutting the stored strip section into pieces, preferably of a defined length. The invention further relates to an apparatus for carrying out the method.

    METHOD FOR PRODUCING METAL STRIPS
    88.
    发明申请

    公开(公告)号:US20180056349A1

    公开(公告)日:2018-03-01

    申请号:US15558020

    申请日:2016-03-15

    Applicant: SMS group GmbH

    CPC classification number: B21B37/28 B21B2263/02

    Abstract: A method for producing metal strip in a rolling mill, so that as a result of a more accurate manufacturing of metal strips in the future, a more precise forecasting of the profile contour of the metal strip can be obtained over the width of the metal strip, as well as a more precise setting of the profile actuator of the rolling mill. A forecast value is calculated for the profile contour within the context of the simulation of the rolling process before the rolling of the metal strip. In contrast to that, the calculation in the simulation is not conducted prior to the rolling, but instead it is obtained by a post-calculation after the rolling of the metal strip has been carried out.

    Method for producing a metal strip
    89.
    发明授权

    公开(公告)号:US09833823B2

    公开(公告)日:2017-12-05

    申请号:US14888787

    申请日:2014-04-30

    Applicant: SMS group GMBH

    Inventor: August Sprock

    CPC classification number: B21B45/0218 B21B2201/06

    Abstract: A method for producing a metal strip, in which the strip is rolled in a multi-stand rolling mill, is removed behind the final rolling stand of the rolling mill in the direction of conveyance, and is cooled in a cooling device. The strip or metal sheet is subjected to additional rapid cooling immediately after passing the working rollers of the final rolling stand, wherein the strip or the metal sheet is cooled at least partially within the extent of the final rolling stand in the direction of conveyance, wherein rapid cooling is performed by applying a coolant to the strip or metal sheet from above and from below, wherein the volume flow of coolant that is applied to the strip or metal sheet from below measures at least 120% of the volume flow of coolant that is applied to the strip or metal sheet from above.

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