• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. A method for starting up a continuous casting system comprising a plurality of castings, especially for pouring molten steel from an intermediate vessel (3) into a plurality of continuous casting moulds (A, B, C) by means of adjustable gate valves (4), with a nominal filling level (8) of the melt being within a measuring zone (9) of a filling level gauge means (9, 10, 11) associated to each mould (A, B, C) and with the resultant castings being withdrawn from a castings withdrawing aggregate (12 through 15) at the same speed, characterized in that switching on of the castings withdrawing aggregate (12 through 15) after reaching a lower signal plane (21) within the measuring zone (9) is effected through the actual filling levels (20) of all moulds (A, B, C) or through the actual filling level (20) first reaching an upper signal level (22) disposed within the measuring zone (9), with the gate valves (4) of the moulds (A, B, C) whose actual filling level is still below the lower signal level (21), in the latter instance, being closed, and that each actual filling level (20), from the lower signal level (21) along a predetermined ascending curve (40) is adjusted into the nominal filling level (8).
    公开号:SU1447270A3
    申请号:SU864027772
    申请日:1986-07-10
    公开日:1988-12-23
    发明作者:Тиннес Бернхард
    申请人:Метакон Аг (Фирма)；
    IPC主号:
    专利说明:



    cm
    The invention relates to metallurgy, in particular, to a method for launching a multi-stream continuous casting installation, in particular for casting a steel melt, from a tundish into several crystallizers for continuous casting using adjustable drain gates.
    The purpose of the invention is to reduce the casting time,
    Fig. 1 shows a circuit for controlling a three-strand plant for continuous casting of a metal; in Fig. 2, p. 3 — possible changes in the level of meta-ing in the molds in the process.
    From the casting ladle 1 through the adjustable drain valve 2, the steel melt is fed to the intermediate ladle 3, having Three drain valves in the form of gate valves 4 regulating the supply of melt through the pipes 5 for pouring into the A, B, C molds for continuous casting. For this, each gate valve is mechanically connected to the actuating element 6, the corresponding position of which is in operation recorded by the position sensor 7. Tubes 5 for pouring with their free ends enter crystallizers A, B, C. The set level 8 adjusted for normal operation is filled in the measuring section 9 of the device for measuring the filling level of the transmitter 10 and receiver 11 for each crystallizer A , B, C,
    A cooling device (not shown) is installed behind crystallizers A, B, C, as well as for ingots an exhaust device having a wheel e rollers 12, a drive 13, a drive regulator 14 and a meter 15 for pulling speed. The latter transmits its measured values to the drive controller 14 and to the processor 16, which receives and processes, in addition to these also the measured values of the position sensors 7, which control the opening degree of the slide gates 4, and the receivers 11 of the level measurement devices. The received data goes to the control computer 17 integrated in the processor 16, which transmits the corresponding control commands to the actuators 6 of the gate valves 4 and to the exhaust actuator controller 14
    for ingots, the drawing rate is set as a constant, i.e. the ingots 18 formed in the crystallizers A, B, and C are drawn out with the help of a common extraction device at the same rate. This means that the predetermined filling level 8 provided for the crystallizers is regulated only from the inflow side by means of slide gates. For this purpose, during normal casting in the plane of a predetermined filling level, the slide gates 4 are held in the throttled position, so as to be able to control either reduce or increase the melt supply.
    At the beginning of the process, the seed 19 is introduced into the crystallizers A, B, C, and the exhaust drive 13 is turned off. During casting, the actual filling levels 20 of all the crystallizers A, B, C must be brought to the same level between the signal planes 21 and 22.
    In particular, during casting, first, the slide gates 4 open predominantly only by 35%, but by no means completely. Due to this, for the gates 4, adjusting reserves are obtained both in the closing direction and in the opening direction, allowing each of the actual filling levels 20 to be raised (Fig. 2), rising in the crystallizers A, B, C from the lower signal plane 21 to a predetermined level 8 along a predetermined lift curve 23, which is consistent with the operating conditions of the respective installation using appropriate programming of the processor 16.
    The criterion for curve 23, which determines the filling rate of the A, B, C molds during casting, is that it should never be such that the melt solidification limit in the slide gates or the melt will be overflowed over the minimum of the mold. The regulation of each slide valve 4 along curve 23 begins on the lower signaling plane 21 and is activated by the level 20 of filling rising in the corresponding crystallizers A, B, C. If at.
    raising the last of all the actual filling levels A2U or B20 or C20 exceeds the lower signal plane 21, then the control computer 17 of the processor 16 turns on the exhaust drive 13 of the common extractor for the ingots 18. After that the raising of the actual filling levels A20, B20 , C20 occurs independently of each other on the basis of the same criteria and, consequently, graphically parallel curves 23- lifting before reaching the specified filling level 8 set for the normal casting process. In this case, if at a given level were reached, excessive pulses would be produced due to a too fast raising level of filling 20, this would create an overflow over the edge of the crystallizer. If during casting, the actual fill level 20 of the crystallizer A or B or C has already come to the upper signal plane 22, while others are still below the lower signal plane 21, then for slide gates 4 lagging behind in this manner the actual fill levels 20, Commands to close.
    The actual level 20 (Fig. 2) of the filling of the crystallizer C after the simultaneous throttled opening of all the slide gates 4 at the beginning of the casting first reached the lower signal plane 21 during the time Ct, and the slide gate 4 relating to the crystallizer C takes on the melt supply adjustment according to the calculated curve 23 lifting. Following this, the actual fill levels 20 of the crystallizers B and A intersect each other for the times Bt and At of the signal plane 21 and activate the rise control along the curve 23 at this moment. None of the actual fill levels 20 are significantly lower. Level A20 reaches the lower signal plane 21 even before level C 20 to 0
    five
    0
    five
    0
    five
    0
    five
    0
    approach to the upper signal plane 22, so that the command to start the drive 13 of the exhaust device comes from the actual fill level A20.
    The actual fill level A20 of FIG. 3 has already come to the upper signal plane 22, the actual fill level B20 has exceeded the lower signal plane 21, and the actual fill level C20 is still below this plane. At this position of the actual filling levels, the exhaust drive 13 for the ingots is triggered on the upper signal plane 22 with the actual filling level A20 and at the same time the expansion valve 4 of the mold C is closed, the actual filling level C20 in which by this time did not rise above the lower signal plane 21.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    The method of launching a continuous metal casting plant, mainly from an intermediate tank with adjustable drain valves and a common drive for ingot extraction, including supplying metal from the intermediate tank to the molds and changing the metal feed when the metal level in any of the molds reaches the first technological value specified when the level of the metal in any of the molds is the second technology-specified value, and the first technology-specified value the second layer is less than about m- lichayuschiys in that in order to reduce the time the casting include drive when the metal level in E in all molds at a first predetermined value of the technology, the metal layer is varied in each of the molds after they achieve a first zadanno-. by the level of technology to the second specified level of technology with a given speed.
    % "ABOUT
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    Editor M.Blanar
    Compiled by A.Abrosimov
    Tehred M. Khodanich Proofreader E. Lonchakova
    Order 6755/58
    Circulation 741
    VNIIPI State Committee for Inventions and Discoveries under the USSR Committee on Scientific and Technical Information 113035, Moscow, Zh-35, Raushsk nab. D. 4/5
    Subscription
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    CA1265912A|1990-02-20|
    CN1008985B|1990-08-01|
    DE3538222A1|1987-05-27|
    EP0223078A1|1987-05-27|
    IN163970B|1988-12-17|
    JP2540032B2|1996-10-02|
    AT41340T|1989-04-15|
    GR3000078T3|1990-10-31|
    JPS62101359A|1987-05-11|
    EP0223078B1|1989-03-15|
    CZ772186A3|1996-09-11|
    MX172000B|1993-11-29|
    CN86104290A|1987-05-06|
    PL154653B3|1991-09-30|
    DE3662339D1|1989-04-20|
    DE3538222C2|1989-05-11|
    ZA865223B|1987-03-25|
    CZ281650B6|1996-12-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH639575A5|1979-04-27|1983-11-30|Concast Ag|METHOD AND DEVICE FOR CONTINUOUSLY MOLDING SEVERAL STRINGS.|
    EP0149447A3|1983-12-29|1986-10-22|VOEST-ALPINE Aktiengesellschaft|Method of controlling the level in continuous casting moulds of a multiple-strand continuous casting plant, and arrangement for carrying out the method|
    DE3432611C2|1984-09-05|1986-09-04|Metacon AG, Zürich|Procedure for starting up a continuous caster with several strands|JPS62183952A|1986-02-07|1987-08-12|Sumitomo Metal Ind Ltd|Control method for surface level of molten steel in mold|
    JPH0411293B2|1986-02-07|1992-02-28|
    MX170682B|1988-11-22|1993-09-07|Hitachi Zosen Corpuration|METHOD FOR THE AUTOMATIC STARTING OF A CONTINUOUS CASTING DEVICE|
    GB2249978B|1990-11-26|1994-08-24|Ishikawajima Harima Heavy Ind|Tundish flow control|
    FR2677284B1|1991-06-07|1993-08-27|Pechiney Aluminium|PROCESS AND APPARATUS FOR AUTOMATIC CASTING OF SEMI-PRODUCTS.|
    EP0564674A1|1992-04-06|1993-10-13|Zimmermann & Jansen GmbH|Method of starting a continuous-casting installation|
    EP0855238A1|1997-01-24|1998-07-29|Alusuisse Technology & Management AG|Process for vertical continuous casting of metals|
    DE10033656A1|2000-07-11|2002-01-24|Sms Demag Ag|Method and continuous casting device with a device for measuring the mold level for liquid metal, in particular for liquid steel|
    EP1714718B1|2001-04-19|2008-07-09|Alcoa Inc.|Continuous pressure molten metal supply system and method|
    US7934627B2|2005-10-13|2011-05-03|Alcoa Inc.|Apparatus and method for high pressure extrusion with molten aluminum|
    CN102430728B|2011-12-07|2013-07-10|中宁县锦宁铝镁新材料有限公司|Multi-crystallizer horizontal continuous casting tundish and continuous casting process implemented by using same|
    CN103112709B|2013-03-11|2015-11-04|嘉诺资源再生技术（苏州）有限公司|A kind of online removal device|
    CN105215305B|2015-10-14|2017-09-01|中冶连铸技术工程有限责任公司|A kind of three machines three stream sheet billet continuous casting machine production line|
    AT518476B1|2016-04-12|2020-02-15|Primetals Technologies Austria GmbH|Process for starting and stopping a multi-strand continuous casting machine, common plug drive and multi-strand continuous casting machine|
    JP6634542B2|2016-09-27|2020-01-22|ハイドロ アルミニウム ロールド プロダクツ ゲゼルシャフト ミット ベシュレンクテル ハフツングＨｙｄｒｏ Ａｌｕｍｉｎｉｕｍ Ｒｏｌｌｅｄ Ｐｒｏｄｕｃｔｓ ＧｍｂＨ|Method for multiple casting of metal strands|
    US10913108B2|2017-09-12|2021-02-09|Wagstaff, Inc.|Dynamically positioned diffuser for metal distribution during a casting operation|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3538222A|DE3538222C2|1985-10-26|1985-10-26|
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