EP0092477B1 - Procédé et dispositif de fabrication d'un lingot d'acier creux - Google Patents

Procédé et dispositif de fabrication d'un lingot d'acier creux Download PDF

Info

Publication number
EP0092477B1
EP0092477B1 EP83400746A EP83400746A EP0092477B1 EP 0092477 B1 EP0092477 B1 EP 0092477B1 EP 83400746 A EP83400746 A EP 83400746A EP 83400746 A EP83400746 A EP 83400746A EP 0092477 B1 EP0092477 B1 EP 0092477B1
Authority
EP
European Patent Office
Prior art keywords
ingot
core
mist
hollow
ingot mould
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
Application number
EP83400746A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0092477A1 (fr
Inventor
Philippe Dor
Daniel Martin
Jean-Claude Saint-Ignan
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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
Priority claimed from FR8206475A external-priority patent/FR2525131A1/fr
Priority claimed from FR8304718A external-priority patent/FR2543031B2/fr
Application filed by Creusot Loire SA filed Critical Creusot Loire SA
Priority to AT83400746T priority Critical patent/ATE16362T1/de
Publication of EP0092477A1 publication Critical patent/EP0092477A1/fr
Application granted granted Critical
Publication of EP0092477B1 publication Critical patent/EP0092477B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/04—Casting hollow ingots

Definitions

  • the present invention relates to the manufacture of hollow steel ingots, and is particularly advantageous for casting large hollow ingots then used as blanks for forging large hollow parts.
  • the traditional technique for making hollow forgings such as ferrules, tubes, containers intended to be pressurized, etc., consists in subjecting a conventional ingot, therefore full, the following successive operations: blooming, crushing , drilling, drawing on mandrel, waxing.
  • the object of the present invention is to be able to produce a hollow ingot ensuring an energetic evacuation of the heat by the core during the solidification of the ingot, and avoiding the drawbacks mentioned above in a and b.
  • the present invention firstly relates to a method for manufacturing a hollow steel ingot, traditionally using an ingot mold placed on a source casting base, supplied by at least one source output, and further comprising, in the center of the mold, the installation of a vertical cylindrical core, comprising an outer cylindrical sheet metal jacket and a hollow inner mandrel, separated from each other by a regular interval continuously traversed by a cooling current constituted by a gas, or by a mist, or by the mixture of a gas and a mist, descending along the axis of the hollow mandrel and rising along the jacket in said regular interval, the temperature of l steel measured in a ladle just before it is poured into an ingot mold being at most equal to 1590 ° C., this method being characterized both in that said vertical cylindrical core is entirely metallic, in that the speed of supply of the ingot mold in ac ier liquid, at each source exit, is at most equal to 20 (twenty) cm / s, in that the ascending speed of
  • the optimum temperature for casting the steel is chosen according to the liquid of the grade of steel to be cast.
  • the source exit and rise speeds of the steel in the ingot mold are chosen taking into account the geometry of the assembly formed by the ingot mold and by the core.
  • the invention excludes the use of any liquid, but not that of droplets constituting a mist or a suspension in a gas.
  • the cooling element of the core is preferably chosen, but not necessarily, from the following bodies: ordinary air, carbon dioxide, water vapor, water mist.
  • the invention presents a possibility of modulating the flow rate and the nature of the cooling element, with a view to achieving variable, more or less vigorous cooling, which is optimal at each instant of the solidification of the ingot, for example decreasing during solidification of the ingot according to a very precise variation law for each type of ingot.
  • the invention thus gives complete control of the position, in the thickness of the ingot, of the end of solidification front.
  • the core is placed in the mold before introducing the molten metal, and this is then poured from bottom to top between the core and the mold.
  • the method according to the invention can also be applied under vacuum, if necessary.
  • the invention also relates to a device for manufacturing a hollow steel ingot, applying the process mentioned above with the features of claim 4.
  • the thickness of the cylindrical sheet liner is between 5 and 12 mm.
  • the previous device according to the invention may include exothermic or insulating plates forming weights, arranged at the upper level of the liquid metal, and attached, on the one hand, to the internal wall of the ingot mold and, on the other hand, to the jacket cylindrical of the nucleus.
  • One of the main advantages of the method and of the device according to the invention is constituted by the significant evacuation of heat through the core, during the entire solidification of the ingot, because the cylindrical jacket of the core is only one metal sheet, good conductor of heat, the internal face of which is in direct contact with the cooling current, and that the core has no refractory part, therefore no insulating part opposing the transfer of heat.
  • Another notable advantage of the invention is its flexibility and speed of response. Indeed, thanks to the small thickness of the cylindrical jacket, it is possible to quickly vary the rate of heat dissipation by the core by varying either the flow rate of the cooling current or its nature, for example by adding water mist to a pre-existing compressed air stream.
  • the flow rate of the cooling current or its nature for example by adding water mist to a pre-existing compressed air stream.
  • the modulation of the cooling rate for the core thanks to the invention, makes it possible to carry out a program for cooling the ingot according to its nature and according to its dimensions, ensuring optimal cooling at all times of the solidification of the
  • Another advantage of the process according to the invention is that the casting conditions are such that the cylindrical sheet liner incurs no risk of breakthrough.
  • An advantage of the device according to the invention is that, if the sheet metal jacket is to be renewed at each pouring, the central mandrel, solid and well cooled on its two faces, internal and external, can be reused a certain number of times.
  • Another advantage of the device according to the invention is that, at the end of solidification, while the sheet liner remains adherent to the solidified ingot, the central mandrel can be extracted without any difficulty, since a regular free interval separates it from the liner over its entire height.
  • an advantage of gas or mist cooling is that it does not present any risk of explosion, cn.ntrement water cooling.
  • the single figure represents a vertical section; by the axis of the entire device and the ingot.
  • the ingot mold 1 is placed on the source base 2, through which the liquid metal will arrive, coming from the casting mother 3 not shown, by a channel 4 and two orifices such as 5, 180 mm in diameter.
  • the ingot mold 1 is made of cast iron; it has a taper of about 40 mm / m relative to the vertical axis, and its large section is located at the top.
  • the jacket 6 is placed in mild steel sheet 10 mm thick and 1080 mm inside diameter, provided at its lower part with a metal bottom 7 of the same thickness, through which it rests in the middle of base 2.
  • the hollow mandrel 8 has an outside diameter of 980 mm and an inside diameter of 360 mm. It is significantly higher than the jacket 6. It is 50 mm apart. It is made of mild steel. It rests on shims such as 9, themselves placed on the bottom 7 of the jacket 6, and leaving between them free spaces, not visible in the figure.
  • the mandrel 8 must be well centered with respect to the sleeve 6, so that the interval of 50 mm is respected all around the mandrel.
  • a pipe 11 introduces compressed air, with or without water mist.
  • This compressed cooling air travels throughout the interior 12 of the mandrel 8, passes between the shims such as 9, and rises in the gap 13 existing between the jacket 6 and the mandrel 8, to exit in the open air annularly at 14 .
  • the compressed air flow introduced in 10 is nor 125 Nm 3 / min. This air flow rate is here kept constant throughout the duration of the solidification of the ingot, since this adjustment has been determined so that the end of solidification is located at mid-thickness of the hollow ingot. If you want to change the position of the end of solidification front, you just have to adjust the cooling air flow, or even add a little water vapor or water mist to the air.
  • exothermic plates 17, 18 form a counterweight for the head of the ingot 15.
  • the part immersed in the steel of the exothermic plates 17, 18 has a height of 400 mm.
  • the speed of exit of the liquid steel through the two source exits 5, on entering the ingot mold 1, is approximately 11 cm / s.
  • the rising speed of the ingot mold steel is maintained around 9 cm / min.
  • the duration of the source casting of this 86 t ingot is slightly more than 35 min.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP83400746A 1982-04-15 1983-04-15 Procédé et dispositif de fabrication d'un lingot d'acier creux Expired EP0092477B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400746T ATE16362T1 (de) 1982-04-15 1983-04-15 Verfahren und vorrichtung zur herstellung von hohlbloecken aus stahl.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8206475 1982-04-15
FR8206475A FR2525131A1 (fr) 1982-04-15 1982-04-15 Procede et dispositif de fabrication d'un lingot d'acier creux
FR8304718 1983-03-23
FR8304718A FR2543031B2 (fr) 1983-03-23 1983-03-23 Procede et dispositif de fabrication d'un lingot d'acier creux

Publications (2)

Publication Number Publication Date
EP0092477A1 EP0092477A1 (fr) 1983-10-26
EP0092477B1 true EP0092477B1 (fr) 1985-11-06

Family

ID=26222864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400746A Expired EP0092477B1 (fr) 1982-04-15 1983-04-15 Procédé et dispositif de fabrication d'un lingot d'acier creux

Country Status (4)

Country Link
EP (1) EP0092477B1 (es)
KR (1) KR840004375A (es)
DE (1) DE3361154D1 (es)
ES (2) ES8402188A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10043748B4 (de) * 2000-09-05 2004-01-15 W. C. Heraeus Gmbh & Co. Kg Zylinderförmiges Sputtertarget, Verfahren zu seiner Herstellung und Verwendung

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557820B1 (fr) * 1984-01-10 1987-05-07 Pont A Mousson Dispositif d'alimentation en metal liquide pour installation de coulee continue verticale d'un tube metallique, notamment en fonte
JPS6163342A (ja) * 1984-09-03 1986-04-01 Kawasaki Steel Corp 中空鋼塊の製造方法およびその装置
US4759399A (en) * 1986-05-15 1988-07-26 Kawasaki Steel Corporation Method and apparatus for producing hollow metal ingots
GB2193914B (en) * 1986-08-19 1990-08-15 Metal Castings Casting
FR2676670B1 (fr) * 1991-05-23 1996-01-05 Creusot Loire Procede et dispositif de coulee d'un lingot creux metallique.
US5702628A (en) * 1992-07-30 1997-12-30 Nemoto; Masaru Method of fabricating article by using non-sand core and article produced thereby, and core structure
GB2269773B (en) * 1992-07-30 1996-05-22 Masaru Nemoto Core for mould
DE10063383C1 (de) * 2000-12-19 2002-03-14 Heraeus Gmbh W C Verfahren zur Herstellung eines Rohrtargets und Verwendung
DE10253319B3 (de) * 2002-11-14 2004-05-27 W. C. Heraeus Gmbh & Co. Kg Verfahren zum Herstellen eines Sputtertargets aus einer Si-Basislegierung, sowie die Verwendung des Sputtertargets
EP1444993B2 (en) 2003-02-10 2013-06-26 W.C. Heraeus GmbH Improved metal alloy for medical devices and implants
WO2010111384A2 (en) * 2009-03-27 2010-09-30 Titanium Metals Corporation Method and apparatus for semi-continuous casting of hollow ingots and products resulting therefrom
EP2723915A1 (en) 2011-06-27 2014-04-30 Soleras Ltd. Sputtering target
US11001529B2 (en) 2018-05-24 2021-05-11 Silfex, Inc. Crucible for casting near-net shape (NNS) silicon

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE571778C (de) * 1930-07-30 1933-03-04 Osnabruecker Kupfer Und Drahtw Verfahren zum Giessen von Hohlbloecken
GB1301922A (es) * 1969-02-18 1973-01-04
DE1944149A1 (de) * 1969-08-30 1971-03-04 Kocks Gmbh Friedrich Verfahren und Vorrichtung zum Giessen von Hohlbloecken
US4278124A (en) * 1978-04-11 1981-07-14 Kawasaki Steel Corporation Method of producing hollow steel ingot and apparatus therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10043748B4 (de) * 2000-09-05 2004-01-15 W. C. Heraeus Gmbh & Co. Kg Zylinderförmiges Sputtertarget, Verfahren zu seiner Herstellung und Verwendung

Also Published As

Publication number Publication date
ES521441A0 (es) 1984-01-16
ES523506A0 (es) 1984-04-01
ES8403762A1 (es) 1984-04-01
ES8402188A1 (es) 1984-01-16
EP0092477A1 (fr) 1983-10-26
DE3361154D1 (en) 1985-12-12
KR840004375A (ko) 1984-10-15

Similar Documents

Publication Publication Date Title
EP0092477B1 (fr) Procédé et dispositif de fabrication d'un lingot d'acier creux
FR2519275A1 (fr) Procede et equipement pour fabriquer des pieces telles que des douilles de cartouches en cupro-alliage forge sous conditions thixotropes et piece ainsi obtenue
FR2537897A1 (fr) Procede de coulee continue de metal
FR2568153A1 (fr) Procede et dispositif ameliores pour le coulage horizontal et continu du metal
EP0426581B1 (fr) Perfectionnement au procédé de moulage à mousse perdue et sous pression contrôlée de pièces métalliques
EP0743114B2 (fr) Procédé de lubrification des parois d'une lingotière de coulée continue des métaux et lingotière pour sa mise en oeuvre
FR2525131A1 (fr) Procede et dispositif de fabrication d'un lingot d'acier creux
LU82874A1 (fr) Procede et installation pour la fabrication continue d'ebauches creuses en metal
US3616842A (en) Continuous centrifugal casting of tube using liquid mold
EP0393005A2 (fr) Procédé et dispositif de refroidissement d'un produit métallique coulé en continu
US6179042B1 (en) Non-hot crack bottom block for casting aluminum ingot
EP0452294B1 (fr) Procédé et installation pour la coulée continue d'un métal
EP1877211A1 (fr) Procede pour la coulee continue d'ebauches de profiles en metal
EP0038275B1 (fr) Dispositif de coulée continue d'ébauches de tubes métalliques
EP3310527B1 (fr) Electrode de soudage et procede de fabrication d'une electrode de soudage
FR2759309A1 (fr) Tubes metalliques et procede et installation pour les fabriquer
FR2543031A2 (fr) Procede et dispositif de fabrication d'un lingot d'acier creux
EP0958073B1 (fr) Procede et installation de coulee continue des metaux
FR2674154A1 (fr) Procede de fabrication par moulage de pieces de fonderie telles que cylindre de laminoir et lingot de forge, dispositif de mise en óoeuvre du procede et cylindre ou lingot de forge obtenus.
FR2534167A1 (fr) Procede de fabrication en fonderie de pieces moulees en alliages metalliques oxydables
FR2584321A1 (fr) Procede de fabrication d'ebauches creuses par refusion sous laitier electroconducteur, dispositif pour sa mise en oeuvre et ebauches creuses obtenues par ledit procede
EP1097753A1 (fr) Nouveau procédé de coulée centrifuge verticale pour cylindres de laminoirs permettant d'obtenir une liaison saine et sans porosités entre la couche externe en acier rapide et la fonte nodulaire du coeur.
BE486778A (es)
FR2765819A1 (fr) Procede de coulee centrifuge verticale a hydrodynamique amelioree et cylindres de laminage composites, a structure equiaxes, en comportant application
FR2462221A1 (fr) Procede de fabrication de pieces revetues et composites, notamment bimetalliques

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT

17P Request for examination filed

Effective date: 19831025

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT

REF Corresponds to:

Ref document number: 16362

Country of ref document: AT

Date of ref document: 19851115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3361154

Country of ref document: DE

Date of ref document: 19851212

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20020318

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020409

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020410

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020416

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20020514

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20030414

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20030415

BE20 Be: patent expired

Owner name: *CREUSOT-LOIRE

Effective date: 20030415

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20