US3834445A - Continuous casting mold having a breakout sensing and control device - Google Patents

Continuous casting mold having a breakout sensing and control device Download PDF

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Publication number
US3834445A
US3834445A US00283849A US28384972A US3834445A US 3834445 A US3834445 A US 3834445A US 00283849 A US00283849 A US 00283849A US 28384972 A US28384972 A US 28384972A US 3834445 A US3834445 A US 3834445A
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US
United States
Prior art keywords
protective body
bar
metal
mould
cavity
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US00283849A
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English (en)
Inventor
H Raschke
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Voestalpine AG
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Voestalpine AG
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Filing date
Publication date
Application filed by Voestalpine AG filed Critical Voestalpine AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/148—Safety arrangements

Definitions

  • ABSTRACT The invention relates to an apparatus to be used at a continuous casting plant for preventing the results of a break through of the solidifying bar.
  • Such apparatus comprises a protective body which is resistant against liquid metal and immediately below the mould surrounds the bar shell over at least part of its circumference and is provided with a cavity open towards the bar shell for receiving liquid metal, and in said body a sensor connected with an alarm system for indicating a metal break through so that casting may be interrupted.
  • the invention relates to an apparatus at a continuous casting plant, in particular at a plant for continuous casting of steel, in which a bar having a liquid core and a solidified bar shell is drawn out of a water-cooled mould.
  • the invention is aimed at avoiding the described disadvantages. It is aimed at providing at a continuous casting plant a safety device for preventing damages when a metal break through occurs.
  • this task is solved by a protective body which immediately below the mould surrounds at least part of the circumference of the cast bar shell, said body being resistant against the liquid metal and provided with a cavity open towards the bar shell for receiving liquid metal and in which a sensor is housed which indicates a metal break through.
  • the protective body is releasably attached to the mould.
  • the protective body may comprise several parts which are, if desired, cooled by circulation of a coolant agent, of which always two parts lying opposite to each other with regard to the bar, are displaceable against each other so that they may be adapted to different bar cross sections.
  • the protective body comprises two parts arranged to lie opposite to each other and adapted to be adjusted only to the broad sides of the slabs, the cavities at their sides being bordered by walls adjacent to the margin of the bar shell.
  • the protective body is provided at least at its lower edge with a supporting plane for the bar shell, which is preferably formed by a hollow section cooled by circulation of cooling water.
  • a further embodiment of the invention resides in that the cavity of the protective body is provided with a lateral opening through which liquid steel may issue into a collecting vessel.
  • the sensor for indicating the break through of metal may be made of a metal wire electrically insulated against the protective body and against the bar, which wire is connected with one pole of a power supply; further, an alarm signal is provided which is electrically connected with the other pole of the power supply and with the mould or with the protective body, so that in case of a metal break through the insulation of the metal wire is destroyed and an electrically conductive connection is established between the metal wire and the protective body or via the bar with the mould, and
  • the alarm signal is actuated.
  • FIG. 1 is a vertical sectional view of a continuous casting mould provided with a device according to the invention showing the supporting and guiding structure for the bar to be drawn out.
  • FIG. 2 is a schematical illustration of the device indicating the breakthrough of steel.
  • FIGS. 3a and 3b show different embodiments of the metallic protective body in sectional views
  • FIG. 4 is a horizontal sectional view of a metallic protective body according to the invention used for broad slabs and FIG. 5 shows a detail regarding the formation and mountingof the device according to the invention for indicating the break through of steel.
  • numeral 1 denotes'a water-cooled mould of copper, from which a steel bar 2 with a liquid core 3 and an already solidified cast bar shell 4 is drawn out over supporting and guiding rollers 5, 6 by means of a not illustrated drawing out device.
  • the supporting and guiding rollers 6 may be mounted in a (not illustrated) stand, while the supporting and guiding rollers 5 are mounted by a holding means 8 at the lower edge 9 of the mould l oscillating in direction of the bar axis; the rollers 5 oscillate with the mould.
  • a metallic protective body 10 surrounds the bar circumference between the rollers 5 and the mould l.
  • the body is releasably mounted at the mould l by means of a holding ring 11.
  • the protective body 10 is formed as a hollow body, whose hollow space 12 is in connection with a not illustrated water supply and water drain.
  • the protective body 10 has an about C-shaped cross section, whereby an upper and a lower cooled supporting plane 13, 14 for the bar shell 4 is formed, between which a cavity 15 extends which is open towards the bar shell 4.
  • a wire 16 insulated against the metallic protective body 10 and the bar 2 is inserted; that part thereof which is guided out of the protective body 10 through a bore is denoted with 16.
  • This part 16' is connected with an electrical alarm signal whose system is illustrated in FIG. 2.
  • the wire 16 present in the cavity 15 comprises, as shown in detail in FIG. 2, a metal wire 17 and an electrical insulation 18.
  • the electrical insulation 18 may surround the wire 17 only where it is in contact with the protective body 10, as illustrated in FIG. 5. It may, however, also surround the wire 17 over its entire cross section. The insulation is to be resistant against the radiation heat of the bar 2 and if it surrounds the wire entirely has to be destroyed upon contact with liquid steel, which may take place either by breaking as a result of heat tensions or by melting.
  • the metal wire 17 is connected via a line 17 and a safety fuse 19 with one pole of a power supply 20, e.g.,
  • the other pole of the power supply 20 is connected via a line 21 and a safety fuse 22 with an alarm signal 23, e.g., an audible alarm, a blinker or the like.
  • the alarm signal 23 is conductively connected with the mass, i.e., with the mould I or with the metallic protective body 10.
  • the casting process may then be interrupted by hand or by stopping the drive for'drawing out the bar. It is also possible to connect a line 24 with a relay switched in parallel or contractor 25 so that a switch is actuated which closes or interrupts a current conduit 26 which is connected, e.g., with the drive motor of the bar drawing out means in a manner that at the moment when the alarm signal 23 is actuated the continuous casting plant is simultaneously brought to a standstill.
  • a thermal element or a radiation pyrometer may be used, which registers the temperature or light difference occurring when the bar breaks through, and thus causes in the same manner an electrical switching so as to stop the continuous casting plant.
  • the inner face of the protective body may be provided with a graphite layer or with another refractory layer so that the steel is prevented from welding with the protective body.
  • the protective body may be used several times; only the insulated wire 16 has to be renewed.
  • the protective body is designed in several parts.
  • a body is provided so that an annular closed cavity 15 is formed.
  • the individual'parts of the body may easilybe removed after a bar rupture, so that the bar may be drawn out before its complete cooling, if desired after the broken steel was burntoff by means of a flame cutter.
  • the body should be composed of several parts, so that also an adjustment and adaptation to various bar cross sections is possible.
  • the metallic protective body may be composed of an upper part 27 made of full hematite cast iron and a lower part 28made of copper; the lower part forms the lower supporting plane 14, which is a water-cooled hollow section; in this embodiment no upper supporting plane 13 is used.
  • FIG. 3b shows a body made of a hematite cast body 27 and a copper hollow section 28 with a lateral opening 29 for draining liquid steel via a groove 30 into a container not illustrated, so that there is the possibility to receive the total amount of steel present above the ruptured place and to guide it away from the rollers 5, 6 or from the supporting construction.
  • numerals 31, 32 denote metallic protective bodies arranged at the broad sides of a rectangular slab bar 2, which bodies are provided with lateral walls 33 apposed to the edge of the bar shell 4, whereby closed cavities 34,35 are provided which contain electrically insulated wires 36,37; these wires are connected with a power supply 20 in the manner already described; when broad slabs are produced it is not necessary to provide protective bodies at the narrow sides. because there steel does not break through.
  • the cavities 15,34,35 may be connected with a conduit, not illustrated, through which a gas is supplied which may be used for cooling the bar shell area 4; the supplied gas may flow off downwardly through the supporting plane 14 or through the opening 29.
  • a non-oxidizing gas is used for this purpose, so that the formation of scale in the bar shell area 4 or deposits of scale in the cavities 15, 34,35 are prevented.
  • the protective body comprises at least two parts, said parts being displaceable relative to each other for adaptation to different bar cross sections.
  • the protective body comprises two parts, the two parts being positioned on the two opposite broad sides of the cast slab and each of the parts having a cavity therein open toward the slab.
  • a protective body resistant against liquid metal and positioned immediately below the mould said protective body surrounding the cast bar over at least a part of its circumference and being provided with a cavity therein open toward the cast bar;
  • an alarm signal means with a first terminal connected to the mould
  • a sensor for indicating the presence of liquid metal said sensor being positioned in the cavity of said protective body and being made of a metal wire which is electrically insulated against the protective body and against the cast bar;
  • a protective body resistant against liquid metal and positioned immediately below the mould said protective body surrounding the cast bar over at least a part of its circumference and being provided with a cavity therein open toward the cast bar;
  • an alarm signal means with a first terminal connected to said protective body
  • a sensor for indicating the presence of liquid metal said sensor being positioned in the cavity of said protective body and being made of a metal wire which is electrically insulated against the protective body and against the cast bar;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US00283849A 1971-09-20 1972-08-25 Continuous casting mold having a breakout sensing and control device Expired - Lifetime US3834445A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT812971A AT317458B (de) 1971-09-20 1971-09-20 Vorrichtung zur Überwachung einer Anlage zum kontinuierlichen Stahlstranggießen

Publications (1)

Publication Number Publication Date
US3834445A true US3834445A (en) 1974-09-10

Family

ID=3602822

Family Applications (1)

Application Number Title Priority Date Filing Date
US00283849A Expired - Lifetime US3834445A (en) 1971-09-20 1972-08-25 Continuous casting mold having a breakout sensing and control device

Country Status (12)

Country Link
US (1) US3834445A (ja)
JP (2) JPS5038616B2 (ja)
AT (1) AT317458B (ja)
BE (1) BE788995A (ja)
BR (1) BR7206492D0 (ja)
CA (1) CA959233A (ja)
CH (1) CH543324A (ja)
DE (1) DE2239283A1 (ja)
ES (1) ES406411A1 (ja)
FR (1) FR2153262B1 (ja)
GB (1) GB1402463A (ja)
IT (1) IT963900B (ja)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930534A (en) * 1973-02-14 1976-01-06 Mannesmann Aktiengesellschaft Mold for continuous casting of slab ingots
US4311186A (en) * 1980-09-18 1982-01-19 Antonio Spaccarotella Method for quickly repairing break-outs in continuous casting plants
FR2539063A1 (fr) * 1983-01-07 1984-07-13 Kloeckner Werke Ag Procede avertisseur de rupture dans une installation de coulee continue et dispositif pour la mise en oeuvre du procede
US4786259A (en) * 1984-02-27 1988-11-22 Hayes Microcomputer Products, Inc. Low profile modular receptacle and method of making same
US4809766A (en) * 1988-05-26 1989-03-07 Usx Corporation Continuous caster breakout damage avoidance system
US4982779A (en) * 1989-03-17 1991-01-08 Yoshida Kogyo K.K. Shut-off device for use in a guide conduit of a horizontal continuous casting apparatus
US5332024A (en) * 1991-03-05 1994-07-26 Danieli & C. Officine Meccaniche Spa Multipurpose mold
WO1997016273A1 (en) * 1995-11-02 1997-05-09 Comalco Aluminium Limited Bleed out detector for direct chill casting
EP1155762A1 (en) * 2000-05-15 2001-11-21 Wagstaff Inc. Control device and method to stop a molten metal flow, in the event a bleedout is detected during continuous casting
FR2830780A1 (fr) * 2001-10-12 2003-04-18 Central Mint Of China Systeme d'alarme pour moule de coulee
US20040250982A1 (en) * 2003-06-13 2004-12-16 Anderson Michael K. Mold table sensing & automation system
US20150078959A1 (en) * 2012-05-17 2015-03-19 Almex USA, Inc. Process and apparatus for minimizing the potential for explosions in the direct chill casting of aluminum lithium alloys
US9764380B2 (en) 2013-02-04 2017-09-19 Almex USA, Inc. Process and apparatus for direct chill casting
US9936541B2 (en) 2013-11-23 2018-04-03 Almex USA, Inc. Alloy melting and holding furnace
CN110860662A (zh) * 2019-11-28 2020-03-06 马鞍山钢铁股份有限公司 一种抑制连铸板坯角部奥氏体晶粒尺寸的方法和装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT322757B (de) * 1972-08-17 1975-06-10 Voest Ag Schutzvorrichtung zum verhüten von schäden an einer stranggiessanlage
AT359668B (de) * 1978-05-03 1980-11-25 Voest Alpine Ag Schutzvorrichtung zum verhueten von schaeden an einer brammenstranggiessanlage
FR2484878A1 (fr) * 1980-06-20 1981-12-24 Fives Cail Babcock Dispositif de protection contre les percees du metal dans une installation de coulee continue pour brames
JPS5966814U (ja) * 1982-10-28 1984-05-04 昭和電線電纜株式会社 フラツトケ−ブル
JPS60117522U (ja) * 1984-01-17 1985-08-08 昭和電線電纜株式会社 リボンケ−ブル
JPS6116812U (ja) * 1984-07-02 1986-01-31 日立電線株式会社 ジヤケツト付ツイストフラツトケ−ブル
JP6000137B2 (ja) * 2013-01-22 2016-09-28 株式会社神戸製鋼所 溶鋼飛散防止装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145438A (en) * 1937-08-25 1939-01-31 Chase Brass & Copper Co Safety mechanism for continuous casting apparatus
US2709284A (en) * 1950-03-28 1955-05-31 Babcock & Wilcox Co Control apparatus for and method of continuous casting
GB888927A (en) * 1958-06-11 1962-02-07 United Steel Companies Ltd Improvements relating to apparatus for controlling the continuous casting of metals
US3099053A (en) * 1959-03-25 1963-07-30 Olin Mathieson Apparatus and process for continuous casting
US3270376A (en) * 1961-11-04 1966-09-06 Concast Ag Method and apparatus for continuous casting utilizing solidified skin thickness determinations
US3358743A (en) * 1964-10-08 1967-12-19 Bunker Ramo Continuous casting system
US3375862A (en) * 1962-01-12 1968-04-02 Tsnii Tchornoy Metallourgiy I Machine for the continuous pouring of steel
US3633010A (en) * 1970-05-04 1972-01-04 Geosystems Inc Computer-aided laser-based measurement system
US3724529A (en) * 1968-10-18 1973-04-03 Combustible Nucleaire Plant for continuous vacuum casting of metals or other materials
US3731536A (en) * 1968-12-07 1973-05-08 Demag Ag Apparatus for continually measuring the temperature of a continuously cast metal rod

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1130592A (en) * 1966-04-13 1968-10-16 Glacier Co Ltd Improvements in or relating to continuous casting

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145438A (en) * 1937-08-25 1939-01-31 Chase Brass & Copper Co Safety mechanism for continuous casting apparatus
US2709284A (en) * 1950-03-28 1955-05-31 Babcock & Wilcox Co Control apparatus for and method of continuous casting
GB888927A (en) * 1958-06-11 1962-02-07 United Steel Companies Ltd Improvements relating to apparatus for controlling the continuous casting of metals
US3099053A (en) * 1959-03-25 1963-07-30 Olin Mathieson Apparatus and process for continuous casting
US3270376A (en) * 1961-11-04 1966-09-06 Concast Ag Method and apparatus for continuous casting utilizing solidified skin thickness determinations
US3375862A (en) * 1962-01-12 1968-04-02 Tsnii Tchornoy Metallourgiy I Machine for the continuous pouring of steel
US3358743A (en) * 1964-10-08 1967-12-19 Bunker Ramo Continuous casting system
US3724529A (en) * 1968-10-18 1973-04-03 Combustible Nucleaire Plant for continuous vacuum casting of metals or other materials
US3731536A (en) * 1968-12-07 1973-05-08 Demag Ag Apparatus for continually measuring the temperature of a continuously cast metal rod
US3633010A (en) * 1970-05-04 1972-01-04 Geosystems Inc Computer-aided laser-based measurement system

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930534A (en) * 1973-02-14 1976-01-06 Mannesmann Aktiengesellschaft Mold for continuous casting of slab ingots
US4311186A (en) * 1980-09-18 1982-01-19 Antonio Spaccarotella Method for quickly repairing break-outs in continuous casting plants
FR2539063A1 (fr) * 1983-01-07 1984-07-13 Kloeckner Werke Ag Procede avertisseur de rupture dans une installation de coulee continue et dispositif pour la mise en oeuvre du procede
US4786259A (en) * 1984-02-27 1988-11-22 Hayes Microcomputer Products, Inc. Low profile modular receptacle and method of making same
US4809766A (en) * 1988-05-26 1989-03-07 Usx Corporation Continuous caster breakout damage avoidance system
US4982779A (en) * 1989-03-17 1991-01-08 Yoshida Kogyo K.K. Shut-off device for use in a guide conduit of a horizontal continuous casting apparatus
US5332024A (en) * 1991-03-05 1994-07-26 Danieli & C. Officine Meccaniche Spa Multipurpose mold
WO1997016273A1 (en) * 1995-11-02 1997-05-09 Comalco Aluminium Limited Bleed out detector for direct chill casting
US6279645B1 (en) * 1995-11-02 2001-08-28 Comalco Aluminum Limited Bleed out detector for direct chill casting
EP1155762A1 (en) * 2000-05-15 2001-11-21 Wagstaff Inc. Control device and method to stop a molten metal flow, in the event a bleedout is detected during continuous casting
FR2830780A1 (fr) * 2001-10-12 2003-04-18 Central Mint Of China Systeme d'alarme pour moule de coulee
US7296613B2 (en) * 2003-06-13 2007-11-20 Wagstaff, Inc. Mold table sensing and automation system
US20040250982A1 (en) * 2003-06-13 2004-12-16 Anderson Michael K. Mold table sensing & automation system
US20180093323A1 (en) * 2012-05-17 2018-04-05 Almex USA, Inc. Process and apparatus for minimizing the potential for explosions in the direct chill casting aluminum alloys
US9849507B2 (en) * 2012-05-17 2017-12-26 Almex USA, Inc. Process and apparatus for minimizing the potential for explosions in the direct chill casting of aluminum lithium alloys
US9895744B2 (en) 2012-05-17 2018-02-20 Almex USA, Inc. Process and apparatus for direct chill casting
US20150078959A1 (en) * 2012-05-17 2015-03-19 Almex USA, Inc. Process and apparatus for minimizing the potential for explosions in the direct chill casting of aluminum lithium alloys
US10646919B2 (en) 2012-05-17 2020-05-12 Almex USA, Inc. Process and apparatus for direct chill casting
US10946440B2 (en) * 2012-05-17 2021-03-16 Almex USA, Inc. Process and apparatus for minimizing the potential for explosions in the direct chill casting aluminum alloys
US9764380B2 (en) 2013-02-04 2017-09-19 Almex USA, Inc. Process and apparatus for direct chill casting
US9950360B2 (en) 2013-02-04 2018-04-24 Almex USA, Inc. Process and apparatus for minimizing the potential for explosions in the direct chill casting of lithium alloys
US10864576B2 (en) 2013-02-04 2020-12-15 Almex USA, Inc. Process and apparatus for minimizing the potential for explosions in the direct chill casting of lithium alloys
US9936541B2 (en) 2013-11-23 2018-04-03 Almex USA, Inc. Alloy melting and holding furnace
US10932333B2 (en) 2013-11-23 2021-02-23 Almex USA, Inc. Alloy melting and holding furnace
CN110860662A (zh) * 2019-11-28 2020-03-06 马鞍山钢铁股份有限公司 一种抑制连铸板坯角部奥氏体晶粒尺寸的方法和装置

Also Published As

Publication number Publication date
CH543324A (de) 1973-10-31
JPS554889U (ja) 1980-01-12
FR2153262B1 (ja) 1978-06-02
JPS4838832A (ja) 1973-06-07
BE788995A (fr) 1973-01-15
ES406411A1 (es) 1975-07-01
CA959233A (en) 1974-12-17
IT963900B (it) 1974-01-21
AT317458B (de) 1974-08-26
DE2239283A1 (de) 1973-03-29
JPS5038616B2 (ja) 1975-12-11
FR2153262A1 (ja) 1973-05-04
BR7206492D0 (pt) 1973-08-23
GB1402463A (en) 1975-08-06

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