EP0348300B1 - Verfahren und Vorrichtung zur Herstellung eines mehrfachbeschichteten Verbundmetallkörpers - Google Patents

Verfahren und Vorrichtung zur Herstellung eines mehrfachbeschichteten Verbundmetallkörpers Download PDF

Info

Publication number
EP0348300B1
EP0348300B1 EP89401755A EP89401755A EP0348300B1 EP 0348300 B1 EP0348300 B1 EP 0348300B1 EP 89401755 A EP89401755 A EP 89401755A EP 89401755 A EP89401755 A EP 89401755A EP 0348300 B1 EP0348300 B1 EP 0348300B1
Authority
EP
European Patent Office
Prior art keywords
insert
mould
product
ingot
casting
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
EP89401755A
Other languages
English (en)
French (fr)
Other versions
EP0348300A1 (de
Inventor
Pascal Gressin
Roland Bar
Marc Henry
Pierre Pedarre
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.)
Ugine Savoie SA
Original Assignee
Ugine Savoie 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
Application filed by Ugine Savoie SA filed Critical Ugine Savoie SA
Priority to AT89401755T priority Critical patent/ATE79792T1/de
Publication of EP0348300A1 publication Critical patent/EP0348300A1/de
Application granted granted Critical
Publication of EP0348300B1 publication Critical patent/EP0348300B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D7/02—Casting compound ingots of two or more different metals in the molten state, i.e. integrally cast

Definitions

  • the subject of the present invention is a method and a device for manufacturing a multilayer polymetallic composite product such as a wire, a bar or a sheet, in particular based on steel.
  • the core of a steel part such as a stamped wire or thin sheet, must give the part mechanical strength, the ability to stamp or thermal conductivity while the surface layers are contact with the external environment must resist the aggressiveness of this environment or its abrasive nature, not alter its properties (in the case of food) and have an aesthetic appearance, among others.
  • the core metal and the skin metal consist of products such as a laminated polymetallic sheet, that is to say a composite sheet formed of at least two layers whose nature and composition of the constituent metals of each layer is different.
  • Hot laminating consists of superimposing two or more layers by bringing their large faces into contact, welding their edges and hot laminating the laminate thus obtained in order to achieve a metallurgical bond. of the various layers.
  • Cold co-lamination relates to thin products and the bond is not as intimate as that obtained by the process which is the subject of the present invention.
  • the explosion plating process consists in making the metallurgical connection between two superimposed sheets thanks to the high speed impact of the latter under the effect of the pressure generated by an explosive material placed above the free surface of a sheets.
  • the reloading process consists in welding a layer of skin metal onto a sheet or structure that has already undergone the transformation steps.
  • the methods consisting in forming a sandwich material by casting an ingot mold into a filler metal around a plate have all the disadvantages inherent in the diffusion of the constituent elements of one of the metals into the other. On the other hand, the thickness final of the surface layer is not constant.
  • the casting temperature of the filler metal corresponds to an overheating of 30 ° C to 200 ° C.
  • the rate of rise of the filler metal is between 0.5 m / min and 5 m / min and in particular between 1.5 m / min and 2.5 m / min .
  • the invention also relates to a device for manufacturing a polymetallic composite product by source casting formed from at least two different metallic layers, from an ingot mold and an insert constituting the base metal, characterized in that the mold is homothetic with respect to the insert and in that it comprises means for centering the insert.
  • the device constituted by an ingot mold 1 for example in the form of a pyramid trunk open at its lower part and at its upper part.
  • the mold 1 is fixed on a plate 2 so that its small base is oriented downwards.
  • the plate 2 includes centering means 3 of the mold.
  • the plate 2 constituting the bottom of the mold, comprises on the one hand in the axis of the mold a blind hole 4 for centering an insert 5 constituting the base metal and on the other hand two channels 6 for casting in source of a filler metal as will be seen later.
  • the insert 5 for example made of ordinary steel and in the shape of a pyramid trunk, has at its lower part, that is to say on the side of its smallest base, a centering stud 7 constituted by the rest of the pouring channel , and at its upper part, a rod 8 for handling and centering.
  • the ingot mold 1 is homothetic with respect to the insert 5.
  • edges of the pyramid trunk formed by the surface of the insert in position in the ingot mold and the internal surface of the ingot mold must have the same point of convergence.
  • an ingot mold with an internal slope of 3.13%, conical height of 1585 mm, foot width of 388 mm, head length of 492 mm which makes it possible to produce an ingot of 2.7 tonnes, of which the counterweight is cut to obtain an insert of 2.6 tonnes.
  • the mold in which the insert is then placed on which the centering and suspension means 7 and 8 are fixed has a slope of 3.76%, a conical height of 1585 mm, a foot width of 441 mm, a width 560 mm head.
  • a proportion of metal from the insert is thus obtained from 77% of the head part to the foot part of the composite ingot.
  • the ends of the composite ingot over a length not exceeding 100 mm (i.e. less than 1% of the product) are entirely made up of the filler metal so as to completely cover the insert and thus prevent oxidation of the interface between the two materials during hot rolling.
  • the general process for manufacturing a polymetallic composite ingot is carried out as follows.
  • the insert 5 is introduced into the ingot mold 1 so that the centering stud 7 enters the blind hole 4.
  • This stud 7 has a height determined so as to also provide a gap between the bottom of the the ingot mold and the lower part of the insert.
  • the mold 1 is closed by a cover 10 which also provides a gap with the upper part of the insert and a frame 11 is put in place which ensures the upper centering of said insert by means of the rod 8.
  • the filler metal consisting of, for example, stainless steel is poured in, which penetrates in the interval 9 through the channels 6 and completely covers the insert, both the lateral faces and the head and the foot of said ordinary steel insert.
  • the paraffin layer coating the insert serves to protect it from oxidation until the last moment when the liquid metal covers it.
  • the casting temperature of the filler metal corresponds to an overheating with respect to the liquidus of at least 30 ° C, and generally between 50 ° and 150 ° C.
  • the stainless steel casting overheating is around 80 ° C
  • the casting speed is between 1.5 and 2.5 m / min
  • the diameter of the feed channels is between 40 and 80 mm.
  • the polymetallic ingot thus obtained is extracted from the ingot mold 1, then is hot rolled.
  • the rolling process is continued until the desired product is obtained, such as a sheet, bar or wire having the desired thickness, possibly supplemented by cold rolling. Since stainless steel covers the core at the top and bottom, the internal material does not come out of its sheath during rolling.
  • an annealing suitable for the two materials present is carried out to homogenize the characteristics mechanics of the core and the surface of the product.
  • the surface stainless steel gives the product resistance to corrosion and oxidation.
  • the final product has a uniform thickness of stainless steel.
  • the manufacture of a composite ingot will be described below, the core of which is a mild steel and the filler metal is a stainless steel.
  • the source-cast stainless steel is of type Z 2CN 18.09, the chemical composition of which is as follows:
  • the insert with a diameter equal to 300 mm is of the XC200 type and corresponds to approximately 50% of the total product.
  • the chemical composition of the insert is as follows:
  • the casting temperature of the stainless steel was 1539 ° C and the rise was steady in 1 ′ 10 ⁇ .
  • the diameter of the source channels was 56 mm.
  • the polymetallic ingot was roughened to a diameter of 148 mm and then rolled to a diameter of 10.5 mm, at a temperature of 1120 ° C.
  • the surface appearance of the products obtained is excellent and the good adhesion of the filler metal to the base metal makes it possible to avoid any decohesion.
  • the uses of the product thus obtained according to the invention are numerous and varied thanks to the particular qualities provided by the method of obtaining the composite material.
  • the applications in long products, such as wires are for example, vine wire and concrete rods.
  • the material obtained with a judicious combination between the core and the outer layer provides the characteristics and resistance to corrosion, and its price is lower than "solid" stainless steel, if the shades are chosen correctly.
  • Sheets can also be produced which find application in heat exchangers for the chemical and petrochemical industries, diffusers and cookware and exhaust mufflers can be cited as examples.
  • a polymetallic composite sheet obtained according to the process of the present invention is particularly suitable for the manufacture of cooking vessels of which only the surface layers are made of stainless steel and over a very small thickness of the order of one tenth of a mm.
  • An article is thus obtained which has good resistance to corrosion and excellent thermal conductivity which makes it possible to dispense with the heat diffusing inserts.
  • the core of the composite sheet allows easy shaping by stamping in flow forming.
  • the invention is particularly advantageous for exterior stainless steel - interior ordinary steel materials.
  • the invention can be used with other materials.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Non-Insulated Conductors (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Claims (8)

  1. Verfahren zur Herstellung eines polymetallischen Verbundgegenstandes durch steigendes Gießen, welcher mindestens zwei verschiedene metallische Schichten umfaßt, dadurch gekennzeichnet, daß
    - ein von einer Paraffinschicht überdeckter Einsatz (5) in einer dem Einsatz homothetischen Gußform (1) aufgehängt wird, wobei der Einsatz aus einem Grundmetall besteht,
    - nachdem bei bestimmter Temperatur und Steiggeschwindigkeit ein den ganzen Einsatz (5) bedeckendes Auftragsmetall zur Gewinnung eines polymetallischen Blocks steigend gegossen wurde, der von dem Auftragsmetall umgebene Block einem Warmwalzvorgang, dann gegebenenfalls einem Kaltwalzvorgang, unter üblichen Walzbedingungen bis zur Gewinnung des Gegenstands unterworfen wird,
    - dann zur Homogenisierung der mechanischen Eigenschaften von Kern und Oberfläche des Gegenstands ein den beiden Metallschichten angepaßtes Glühen durchgeführt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Gießtemperatur des Auftragsmetalls einer Überhitzung von 30°C bis 200°C entspricht.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Gießgeschwindigkeit des Auftragsmetalls zwischen 0,5 und 5 m/min liegt.
  4. Vorrichtung zur Herstellung eines polymetallischen Verbundgegenstands, welcher aus wenigstens zwei verschiedenen metallischen Schichten gebildet ist, durch steigendes Gießen, auch der Grundlage einer Gußform (1) und eines Einsatzes (5), welcher das Grundmetall bildet, dadurch gekennzeichnet, daß die Gußform (1) homothetisch in Bezug auf den Einsatz (5) ist und daß die Vorrichtung Mittel (4, 7, 8) zur Zentrierung des Einsatzes (5) aufweist.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Mittel zur Zentrierung des Einsatzes (5) einerseits durch ein Sackloch (4), welches an der Basis der Gußform (1) vorgesehen ist und mit einem durch den übrigen Teil des Gießkanals des Einsatzes gebildeten Klotz (7) zusammenwirkt, und andererseits durch eine Handhabungsstange (8), welche dem Klotz (7) gegenüberliegend mit dem Einsatz verbunden ist, gebildet sind.
  6. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Kanten des von der Oberfläche des Einsatzes (5) gebildeten Pyramidenstumpfs in Stellung in des Gußform und der inneren Oberfläche der Gußform (1) einen gleichen Konvergenzpunkt aufweisen.
  7. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Gußform (1) eine innere Schräge von 3,13 % hat.
  8. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Einsatz (5) eine Schräge von 3,76 % hat.
EP89401755A 1988-06-21 1989-06-21 Verfahren und Vorrichtung zur Herstellung eines mehrfachbeschichteten Verbundmetallkörpers Expired - Lifetime EP0348300B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89401755T ATE79792T1 (de) 1988-06-21 1989-06-21 Verfahren und vorrichtung zur herstellung eines mehrfachbeschichteten verbundmetallkoerpers.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8808311 1988-06-21
FR8808311A FR2632977A1 (fr) 1988-06-21 1988-06-21 Procede et dispositif de fabrication d'un produit composite polymetallique multicouches par coulee autour d'une insert, suspendu dans une lingotiere

Publications (2)

Publication Number Publication Date
EP0348300A1 EP0348300A1 (de) 1989-12-27
EP0348300B1 true EP0348300B1 (de) 1992-08-26

Family

ID=9367534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401755A Expired - Lifetime EP0348300B1 (de) 1988-06-21 1989-06-21 Verfahren und Vorrichtung zur Herstellung eines mehrfachbeschichteten Verbundmetallkörpers

Country Status (5)

Country Link
EP (1) EP0348300B1 (de)
AT (1) ATE79792T1 (de)
DE (1) DE68902599T2 (de)
ES (1) ES2034690T3 (de)
FR (1) FR2632977A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ302712B6 (cs) 2010-02-04 2011-09-14 Afe Cronite Cz S.R.O. Technologie výroby bimetalických a vícevrstvých odlitku odlévaných gravitacním nebo odstredivým litím
CN104353793B (zh) * 2014-11-26 2016-06-29 广东省工业技术研究院(广州有色金属研究院) 一种层状复合铝锭的液固相铸造方法
CN108655351B (zh) * 2018-05-30 2020-09-11 舞阳钢铁有限责任公司 加氢反应器用钢12Cr2Mo1R(H)钢锭浇注方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR429942A (fr) * 1911-05-19 1911-10-04 Societe Des Fonderies Forges Et Acieries De Saint- Procédé et dispositif pour la fabrication d'un métal composé de plusieurs métaux superposés
DE329502C (de) * 1917-09-04 1920-11-26 Felten & Guilleaume Carlswerk Verfahren zur Herstellung von Verbundmetallkoerpern
DE650752C (de) * 1933-11-08 1937-09-30 Union Steel Corp Of S A Ltd Kanalstein zur Verwendung beim steigenden Giessen von Hohlbloecken
US2464163A (en) * 1945-02-01 1949-03-08 Sharon Steel Corp Manufacture of stainless clad steel
US3621561A (en) * 1969-02-04 1971-11-23 Armco Steel Corp Method for fabricating a metallic composite ingot
BE756730A (fr) * 1969-10-10 1971-03-01 Forges De La Loire St Chamond Procede de fabrication de produits plaques, en aciers, en alliages et en metaux purs
US4102033A (en) * 1977-03-21 1978-07-25 Kawasaki Steel Corporation Method of producing layer-like clad metal materials
JPS6349343A (ja) * 1986-08-14 1988-03-02 Nobuyoshi Sasaki 中子、その製造方法およびインベストメント鋳造用鋳型の製造方法

Also Published As

Publication number Publication date
DE68902599T2 (de) 1993-04-15
FR2632977A1 (fr) 1989-12-22
ATE79792T1 (de) 1992-09-15
DE68902599D1 (de) 1992-10-01
ES2034690T3 (es) 1993-04-01
EP0348300A1 (de) 1989-12-27

Similar Documents

Publication Publication Date Title
CA1121954A (fr) Procede de fabrication de bandes composites par coulee continue
EP0983129B1 (de) Verfahren zur herstellung von aluminiumbändern durch rollen-bandgiessen
EP0823489A1 (de) Produkt aus AlMgMn-Legierung für Schweissstrukturen mit verbesserter Korossionsbeständigkeit
FR2855083A1 (fr) Procede de fabrication de pieces en alliage d'aluminium soudees par friction
EP0348300B1 (de) Verfahren und Vorrichtung zur Herstellung eines mehrfachbeschichteten Verbundmetallkörpers
EP0037143B1 (de) Schmelztauchverfahren
FR2539550A1 (fr) Procede de fabrication de supraconducteurs stabilises par de l'aluminium, et supraconducteur ainsi produit
FR2883785A1 (fr) Procede de production d'un metal d'apport consommable servant a une operation de soudage
EP0939141B1 (de) Stahlplatte mit spannungsrissbeständiger Aluminiumbeschichtung
FR2823767A1 (fr) Blocs metalliques de forte epaisseur destines a l'usinage
CA2532585A1 (fr) Feuilles ou bandes minces en alliage aifesi
FR2919168A1 (fr) Article culinaire en fonte d'aluminium compatible avec un chauffage par induction et procede de fabrication.
EP1483422B1 (de) Verwendung von dünnen band aus aluminium-eisen-legierung
CA2298312C (fr) Procede d'aluminiage d'acier permettant d'obtenir une couche d'alliage interfaciale de faible epaisseur
EP0988901B1 (de) Herstellungsverfahren eines dünnen Bandes aus rostfreiem Stahl
FR2632976A1 (fr) Procede et dispositif de fabrication d'un produit composite polymetallique par coulee dans une enveloppe placee dans une lingotiere
FR2563637A1 (fr) Materiau composite pour usage ornemental, tel que monture de lunettes
EP0249565B1 (de) Vorrichtung zur Steuerung des Pegels der Kontaktlinie der freien Metalloberfläche mit der Stranggiesskokille in einen vertikalen Strangguss
EP0354857A1 (de) Verfahren zur Herstellung von Überzugskapseln aus Blei und auf diese Weise erhaltene Überzugskapseln
FR2690099A1 (fr) Procédé de coulée en charge permettant d'éviter la fissuration de la réhausse.
FR2846340A1 (fr) Procede de fabrication de bandes en alliage d'aluminium pour ustensiles culinaires
FR2786791A1 (fr) Alliage non precieux pour la realisation de l'ame de support d'articles en metal precieux interieurement creux
FR2512369A1 (fr) Procede de placage des pieces metalliques par explosion et pieces metalliques plaquees obtenues par le procede
BE450875A (de)
CH340960A (fr) Procédé de fabrication d'un produit métallique mixte

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

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900115

17Q First examination report despatched

Effective date: 19910308

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

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

Ref country code: NL

Effective date: 19920826

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19920826

REF Corresponds to:

Ref document number: 79792

Country of ref document: AT

Date of ref document: 19920915

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 68902599

Country of ref document: DE

Date of ref document: 19921001

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2034690

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: CH

Payment date: 19930524

Year of fee payment: 5

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

Ref country code: DE

Payment date: 19930527

Year of fee payment: 5

Ref country code: AT

Payment date: 19930527

Year of fee payment: 5

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

Ref country code: LU

Payment date: 19930601

Year of fee payment: 5

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

Ref country code: GB

Payment date: 19930615

Year of fee payment: 5

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

Ref country code: ES

Payment date: 19930618

Year of fee payment: 5

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

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

Ref country code: SE

Payment date: 19930629

Year of fee payment: 5

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

Ref country code: BE

Payment date: 19930709

Year of fee payment: 5

26N No opposition filed
EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940621

Ref country code: GB

Effective date: 19940621

Ref country code: AT

Effective date: 19940621

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

Ref country code: SE

Effective date: 19940622

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19940622

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

Ref country code: LI

Effective date: 19940630

Ref country code: CH

Effective date: 19940630

Ref country code: BE

Effective date: 19940630

BERE Be: lapsed

Owner name: UGINE SAVOIE

Effective date: 19940630

EUG Se: european patent has lapsed

Ref document number: 89401755.7

Effective date: 19950110

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940621

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19950301

EUG Se: european patent has lapsed

Ref document number: 89401755.7

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

Ref country code: FR

Payment date: 19980518

Year of fee payment: 10

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

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990630

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991102

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050621