EP0566865B1 - Gas- und Trennmittelzuführungs- und Verteilungssystem für eine Vorrichtung zum Stranggiessen - Google Patents

Gas- und Trennmittelzuführungs- und Verteilungssystem für eine Vorrichtung zum Stranggiessen Download PDF

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Publication number
EP0566865B1
EP0566865B1 EP93104224A EP93104224A EP0566865B1 EP 0566865 B1 EP0566865 B1 EP 0566865B1 EP 93104224 A EP93104224 A EP 93104224A EP 93104224 A EP93104224 A EP 93104224A EP 0566865 B1 EP0566865 B1 EP 0566865B1
Authority
EP
European Patent Office
Prior art keywords
intermediate element
channels
mould
feeding channels
separating
Prior art date
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
Application number
EP93104224A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0566865A1 (de
Inventor
Wolfgang Dr. Schneider
Manfred Langen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAERZ-GAUTSCHI INDUSTRIEOFENANLAGEN GmbH
Hydro Aluminium Deutschland GmbH
Original Assignee
Vereinigte Aluminium Werke AG
Vaw Aluminium AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vereinigte Aluminium Werke AG, Vaw Aluminium AG filed Critical Vereinigte Aluminium Werke AG
Publication of EP0566865A1 publication Critical patent/EP0566865A1/de
Application granted granted Critical
Publication of EP0566865B1 publication Critical patent/EP0566865B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B22D11/07—Lubricating the moulds
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0401—Moulds provided with a feed head

Definitions

  • the invention relates to a device for the continuous casting of metal with the supply of a release agent or a release agent mixture to the surface of the cast strand with feed channels for at least one release agent or a release agent mixture, the outlet openings of which in an intermediate area between a hot head, through the open cross-section of which molten metal is fed, and a mold , in the open cross section of which the molten metal solidifies, where an intermediate element with a central open cross-sectional opening is provided between the hot head and the mold, the surfaces of which, together with the adjacent surfaces of the hot head and / or the mold, at least the end sections leading directly to the outlet openings of the feed channels.
  • release agent supply is inadequate or not regulated uniformly, surface and edge structure defects of the cast strand can occur, depending on the boundary conditions. This particularly includes surface segregation, i.e. an inhomogeneity in the microstructure near the surface.
  • Separating oils in particular when adding gases - namely air or inert gas - have been found to be a suitable release agent, which are each supplied under pressure, a gas-oil mixture being formed due to the pressure and temperature conditions prevailing in the mold.
  • the system of bores and ring channels provided in the mold is complicated.
  • the corresponding ring body which has radial bores on the back and possibly circumferential grooves, is expensive, complicated and not reliable in operation, since clogging of its porous structure due to thickened separating oil cannot be ruled out.
  • ring channels are formed by ring grooves in one Intermediate element and / or are provided in a surface of the mold, which are supplied with bores in the hot head or in the mold with separating oil or gaseous separation medium, and from which annular gaps lead to the transition area between the hot head and the mold, which behind the mentioned recess in the casting direction and which are formed by annular surfaces of the hot head of the intermediate element and the mold.
  • the device specified herewith requires a very high manufacturing outlay, since fitting surfaces have to be manufactured very precisely on all three parts in order to exactly maintain the exit width of the annular gaps.
  • the surface parts that directly form the gaps must be manufactured very precisely, with slight inaccuracies, for example in the centering of the hot head, the intermediate element and the mold, causing uneven gap widths with respect to one another, so that completely unusable results are produced due to uneven release agent supply on the cast strand.
  • the present invention has for its object to improve a device of the type mentioned in such a way that increased accuracy in the generation of the channel cross sections of the feed channels can be achieved with simple, inexpensive means.
  • the solution to this is that the intermediate element is a sheet metal part and that at least up to the opening edge end sections of the feed channels are worked into the surface of the intermediate element at a constant depth.
  • the end sections of the feed channels into the upper side of the mold.
  • a photochemical etching method and, alternatively, a laser cutting method are proposed for this.
  • channels of constant depth and thus the channel cross-section that must be precisely observed can be produced with simple means with greater accuracy.
  • the etching or laser cutting of the channels on the surfaces of the intermediate element Respectively.
  • the subject of the invention also includes in the same way, however, the etching and laser cutting of corresponding channels in the top of the mold, which is also made of metal.
  • the intermediate element Due to the relatively resilient design of the intermediate element as a thin-walled sheet metal part, inaccuracies in the respective counter surfaces of the hot head and the mold can be compensated for without the channel depths being significantly changed.
  • the channel width will usually be constant, so that the flow resistance is optimized with a constant channel cross section.
  • the end sections it is also possible for the end sections to be tapered in the manner of a nozzle, so that an increased exit speed is achieved.
  • the preferred material suitable for the etching and laser cutting of the feed channels is stainless steel or copper alloys for the intermediate element.
  • the preferred thickness of the intermediate element is between 0.1 and 5 mm, in particular between 0.5 and 2 mm. This is good workability.
  • the feed channels for the separation media are expanded in a nozzle shape towards the opening edge.
  • the expansion angle can be between 13 and 17 °, preferably it is 15 °. It is particularly advantageous if the channels are designed so that the dividers do not run to the opening edge, but end at a distance of 0.5 to 2 mm before the opening edge. This causes the supplied media to meet in front of the opening edge, thereby making the release of the separation medium more uniform.
  • the intermediate element is formed in one piece and in a ring or rectangular shape.
  • the intermediate element is also possible to use multi-part intermediate elements which each consist of individual strips delimiting the free opening cross section.
  • the opening edge of the intermediate element can be flush with the wall of the mold and exposed to the cross-sectional opening of the mold.
  • the end sections of the feed channels for the release agent open substantially radially to the casting direction of the strand.
  • the opening edge of the intermediate element can be covered by an overhang of the hot head and the end sections of the feed channels open into grooves in the opening edge of the intermediate element. If the cross-sectional opening of the mold is somewhat less than the opening edge, essentially a rectified inflow of the separating agent is possible with respect to the direction of manufacture of the cast strand.
  • the feed channels i.e. the opening end sections consist of individual depressions which run essentially perpendicular to the opening edge of the intermediate element and which are preferably at a uniform distance from one another for uniform distribution of the separating means.
  • parallel connecting sections are provided at a distance from the opening edge, also in the form of recessed channels or in the form of complete slots in the intermediate element, which are connected to connecting channels in the mold or in the hot head for supplying release agent.
  • outlet opening for the gaseous separation medium lie in the direction of the casting strand in front of or above the outlet openings for the separation oil.
  • Seals can be provided between the individual feed channels and / or between the connecting channels running at a distance from the opening edge, which seals are embedded in particular in grooves in the surface of the hot head and / or the mold.
  • a trough 1 which has a common open liquid level with a hot head 21, below which a water-cooled mold 22 can be seen.
  • the liquid melt solidifies in the area of the mold, a miniscus being formed downwards and solidifying to form the ingot 3, which is seated at the bottom on a sprue 4 which is pulled downwards by a table 5.
  • Draining oil is designated 13.
  • a gaseous separation medium and a separation oil are supplied in the intermediate region between the hot head 21 and the mold 22, a gaseous separation medium and a separation oil are supplied.
  • Corresponding feed devices are shown for this. 6 shows an interface to a gas supply system, in particular the compressed air system of an operating system.
  • a reducing valve 7 In the further line there is a reducing valve 7, a volume flow device 8 and a pressure measuring device 9.
  • a reservoir 14, a pump 11 and a flow measuring instrument 10 are shown for the separating oil. It can be seen that the mold has a recess in the casting direction with respect to the hot head.
  • a hot head 21, a mold 22 and an intermediate sheet-metal intermediate element 23 can be seen in FIG.
  • a clamping element 24 lies outside the hot head.
  • the mold 22 has a cooling water chamber 25 in the usual way. Internal bores 29 are connected to the cooling water chamber 25 and lead into the vicinity of the surface 27 of the mold.
  • individual feed channels 30 lying perpendicular to the opening edge 28 are etched at the same distance from one another and / or laser-cut, which are connected to one another on the back by at least one connecting channel 31, which is designed as a slot.
  • the slot-shaped connecting channel 31 lies above a supply channel 32 designed as an open groove in the mold, which can be connected via at least one bore 33 to a first gas or release agent supply source.
  • seals 34, 35 inserted in grooves are provided running in parallel.
  • second feed channels 36 are etched into the surface or laser cut, which are connected to one another by means of a connecting channel 37 designed as an open groove in the mold. It is also possible to partially or exclusively form a transverse connecting channel in the surface of the intermediate element.
  • a feed channel to the connecting channel 37 lies in a different sectional plane and is not shown here. This feed channel connects the channel 37 to the supply channel 38 and is connected at least with a bore to a gas or release agent reservoir.
  • FIG. 1 An example of an intermediate element 23 is shown in plan view in FIG.
  • the central cross-sectional opening 40 not previously designated, can be seen, which in this case has an essentially rectangular cross-section.
  • Perpendicular to the opening edge 28, circumferentially distributed and etched and laser-cut feed channels 30 end at substantially the same intervals and are connected to one another via individual rear slot-shaped connecting channels 31.
  • Each of the connecting channels 31 requires a separate feed hole in the mold or in the hot head.
  • An intermediate element 23 ' is shown in FIG. 5, which is round overall and thus forms a central cross-sectional opening 40'. Perpendicular to the opening edge 28 ', circumferentially distributed etched or laser-cut feed channels 30' end at substantially the same intervals. These are connected to one another via individual slot-shaped part-circular connecting channels 31 '. Each of the connecting channels 31 'requires a separate feed hole in the mold or in the hot head. In terms of function, the details shown here correspond to those in FIG. 3.
  • FIG. 6 details of an intermediate element 23 ′′ with a straight opening edge 28 ′′ can again be seen, towards which feed channels 30 ′′ and 36 ′′ run, of which the former communicate with one another via a connecting channel 31 ′′.
  • the feed channels 30 ′′ and 36 ′′ are tapered in a nozzle shape toward the opening edge 28 ′′, so that the media supplied emerge at an increased speed or pressure.
  • FIG. 7 shows the preferred variant of an intermediate element 23 '' 'with a straight opening edge 28' '' into which feed channels 30 '' 'and 36' '' open.
  • the widening angle y of the nozzle-shaped feed channels 30 '' ' is 15 ° in the example, but can in principle also be 13 or 17 °.
  • the widening angle y comprises only half of the nozzle-shaped feed channels 30 '' '.
  • the angle enclosed by both sides of the nozzle is 2 x y, in the example 30 °, and can be between 26 and 35 °.
  • the feed channels 30 '' ' are designed in such a way that the separating webs 15 arranged between them do not run up to the opening edge 28' '', but end at a distance b before the opening edge.
  • the distance b can be between 0.5 and 2 mm, as a result of which an equalization is achieved before the supplied media exit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Adornments (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Telephone Function (AREA)
EP93104224A 1992-04-15 1993-03-16 Gas- und Trennmittelzuführungs- und Verteilungssystem für eine Vorrichtung zum Stranggiessen Expired - Lifetime EP0566865B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4212531A DE4212531C1 (de) 1992-04-15 1992-04-15 Gas- und Trennmittelzuführungs- und Verteilungssystem für eine Vorrichtung zum Stranggießen
DE4212531 1992-04-15

Publications (2)

Publication Number Publication Date
EP0566865A1 EP0566865A1 (de) 1993-10-27
EP0566865B1 true EP0566865B1 (de) 1996-11-13

Family

ID=6456830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104224A Expired - Lifetime EP0566865B1 (de) 1992-04-15 1993-03-16 Gas- und Trennmittelzuführungs- und Verteilungssystem für eine Vorrichtung zum Stranggiessen

Country Status (9)

Country Link
US (1) US5320159A (no)
EP (1) EP0566865B1 (no)
JP (1) JPH0734975B2 (no)
AT (1) ATE145162T1 (no)
AU (1) AU658496B2 (no)
CA (1) CA2094002C (no)
DE (2) DE4212531C1 (no)
ES (1) ES2096789T3 (no)
NO (1) NO179933C (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204295B2 (en) 2001-03-30 2007-04-17 Maerz-Gautschi Industrieofenanlagen Gmbh Mold with a function ring

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2704786B3 (fr) * 1993-03-30 1995-03-10 Lorraine Laminage Procédé de coulée continue en charge des métaux, notamment de l'acier, et lingotière pour sa mise en Óoeuvre.
US5647427A (en) * 1995-08-15 1997-07-15 Wagstaff, Inc. Non-ferrous metal casting mold table system
FR2747063B1 (fr) * 1996-04-05 1998-05-22 Ugine Savoie Sa Lingotiere de coulee continue en charge verticale des metaux
JP3555641B2 (ja) * 1996-10-25 2004-08-18 日立プリンティングソリューションズ株式会社 離型剤供給部材、離型剤供給装置およびそれを用いた定着装置
DE10115999C2 (de) * 2001-03-30 2003-08-14 Vaw Ver Aluminium Werke Ag Kokille mit Funktionsring
DE10349132A1 (de) * 2003-10-17 2005-05-12 Loi Thermprocess Gmbh Verfahren und Vorrichtung zum Stranggießen von Metall
WO2007062476A1 (en) * 2005-11-30 2007-06-07 Cast Centre Pty Ltd A gas and lubricant delivery apparatus
US9561539B2 (en) 2008-06-30 2017-02-07 Nippon Light Metal Company, Ltd. Gas pressure controlled casting mold
US20100198532A1 (en) * 2008-12-30 2010-08-05 Weston Gerwin Apparatus and method for measurement of tube internal diameter
JP5060517B2 (ja) * 2009-06-24 2012-10-31 東京エレクトロン株式会社 インプリントシステム
JP5727388B2 (ja) * 2009-12-21 2015-06-03 昭和電工株式会社 鍛造加工方法および鍛造加工装置

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US3286309A (en) * 1963-06-06 1966-11-22 Aluminum Co Of America Method and apparatus for horizontal casting of ingots
NO115409B (no) * 1963-06-07 1968-09-30 Aluminum Co Of America
US3446267A (en) * 1966-09-07 1969-05-27 Concast Inc Continuous casting mold
DE2609075C3 (de) * 1976-03-05 1979-01-18 Acieries Reunies De Burbach- Eich-Dudelange S.A. Arbed, Luxemburg Vorrichtung zum Zuführen und gleichmäßigen Verteilen von Schmiermitteln auf die Innenwand einer Stranggießkokille
SU569376A1 (ru) * 1976-03-09 1977-08-25 Предприятие П/Я Г-4986 Устройство дл смазки кристаллизатора машины непрерывного лить заготовок
CA1082875A (en) * 1976-07-29 1980-08-05 Ryota Mitamura Process and apparatus for direct chill casting of metals
JPS6039457B2 (ja) * 1980-08-22 1985-09-06 昭和軽金属株式会社 冷却鋳型
JPS5938863B2 (ja) * 1980-09-08 1984-09-19 三菱軽金属工業株式会社 垂直連続鋳造方法
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GB2129344B (en) * 1982-10-20 1986-11-19 Wagstaff Engineering Inc Direct chill casting
DE3424457A1 (de) * 1984-07-03 1986-01-16 Kaiser Aluminium Europe Inc., 4000 Düsseldorf Vorrichtung zum stranggiessen von metallen
CH665576A5 (en) * 1985-06-10 1988-05-31 Jean Lathion Two=piece sidewalls for casting moulds - with a grooved spacer plate providing compressed air and oil systems
DE3533517A1 (de) * 1985-09-20 1987-04-02 Vaw Ver Aluminium Werke Ag Verfahren und vorrichtung zum stranggiessen
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204295B2 (en) 2001-03-30 2007-04-17 Maerz-Gautschi Industrieofenanlagen Gmbh Mold with a function ring

Also Published As

Publication number Publication date
CA2094002C (en) 1998-04-28
NO931318L (no) 1993-10-18
NO179933B (no) 1996-10-07
NO179933C (no) 1997-01-15
DE59304452D1 (de) 1996-12-19
JPH0647504A (ja) 1994-02-22
DE4212531C1 (de) 1993-10-21
AU3683593A (en) 1993-10-21
CA2094002A1 (en) 1993-10-16
US5320159A (en) 1994-06-14
JPH0734975B2 (ja) 1995-04-19
AU658496B2 (en) 1995-04-13
ES2096789T3 (es) 1997-03-16
EP0566865A1 (de) 1993-10-27
ATE145162T1 (de) 1996-11-15
NO931318D0 (no) 1993-04-06

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