EP0137315B1 - Procédé et installation pour la fabrication d'alliages de haute pureté - Google Patents

Procédé et installation pour la fabrication d'alliages de haute pureté Download PDF

Info

Publication number
EP0137315B1
EP0137315B1 EP84110654A EP84110654A EP0137315B1 EP 0137315 B1 EP0137315 B1 EP 0137315B1 EP 84110654 A EP84110654 A EP 84110654A EP 84110654 A EP84110654 A EP 84110654A EP 0137315 B1 EP0137315 B1 EP 0137315B1
Authority
EP
European Patent Office
Prior art keywords
melt
crucible
melting
casting
container
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
EP84110654A
Other languages
German (de)
English (en)
Other versions
EP0137315A2 (fr
EP0137315A3 (en
Inventor
Jürgen Dr.-Ing. Hartwig
Johannes Jachowski
Paul Dipl.-Ing. Pant
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.)
Fried Krupp AG
Original Assignee
Fried Krupp 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6210057&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0137315(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fried Krupp AG filed Critical Fried Krupp AG
Priority to AT84110654T priority Critical patent/ATE34775T1/de
Publication of EP0137315A2 publication Critical patent/EP0137315A2/fr
Publication of EP0137315A3 publication Critical patent/EP0137315A3/de
Application granted granted Critical
Publication of EP0137315B1 publication Critical patent/EP0137315B1/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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/15—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using vacuum

Definitions

  • the starting material forming the alloy is melted in an induction crucible, subjected to a vacuum treatment and then poured into a resistance-heated casting funnel, from which it is poured to form a certain metallostatic height and z. B. passes through a spray system into a spray chamber.
  • ceramic particles from the lining of the induction crucible and slag particles - the latter also when the pouring funnel flows empty - can get into the atomization chamber - especially in the initial phase of the pouring, in which there is still no metallostatic height in the pouring funnel.
  • the liquid material reacts with the lining of the pouring funnel to form further impurities which also end up in the end product.
  • a method and a device for producing metallurgical products in which or in which an alloy melts in an induction furnace located in a vacuum chamber arrangement and within the vacuum chamber arrangement possibly via a tilting ladle onto a Gutter arrangement is given, from which it is possibly poured through the closable bottom outlet of the ladle of a mobile trolley by a plug.
  • the alloy in the ladles and on the tundish arrangement is heated by electron beams arranged above it in order to keep it flowable and pourable. In the ladles, however, there is only an energy supply from the surface.
  • the invention is based on the object of specifying a method for producing high-purity alloys, the use of which improves the degree of purity of the alloy and can be maintained throughout the entire casting phase. Furthermore, an installation for carrying out the method is to be created.
  • melt located in the second crucible therefore has a higher degree of purity than the conditions in the induction crucible. Since the enrichment of the non-metallic impurities is already on the surface of the melt before it flows out through the pouring opening below, a high-purity alloy material flows from the beginning of the opening. By timely actuation of the closing arrangement, the outflow of the non-metallic impurities can be prevented and the high degree of purity can thus be maintained over the entire casting phase.
  • the system comprises an induction melting crucible 1, which is housed in a vacuum vessel 2.
  • a resistance-heated melting furnace 3 which has an outflow nozzle 4 in its bottom.
  • the melting furnace 3 is assigned a closing arrangement 5, which has a stopper rod 6, which is inserted from above through a vacuum guide 7 into the vacuum vessel 2 and can be operated by a control device 8.
  • the plug rod 6 is provided with a casing and / or coating 9.
  • the part of the sealing rod 6 located above the casing, the vacuum guide 7 and / or the control device 8 can be connected to a cooling system (not shown) in order to keep harmful thermal influences as low as possible.
  • nozzles 10 which point into the interior of the melting furnace 3 and which are connected to an inert gas line (not shown) on the outside.
  • the stopper rod 6 has nozzles 11 directed laterally into the cavity of the melting furnace 3 and a nozzle 12 directed in the direction of the outflow nozzle 4.
  • the nozzles 11 and 12 are connected to an inert gas supply (not shown).
  • a spraying chamber 13 which has at its upper end a spraying arrangement 14 located exactly below the outflow nozzle 4.
  • the starting material is first introduced into the induction crucible 1.
  • the alloy is used to set the required casting temperature and for refining treatment, ie to remove all non-metallic impurities due to density Buoyancy and transferred to the setting of the casting temperature in the resistance-heated melting furnace 3.
  • the density-related buoyancy of the non-metallic impurities can be supported by the inert gas that passes through the nozzles 10 and / or 11 into the melt.
  • the melt is kept at a constant casting temperature for the duration of the refining treatment.
  • the stopper rod 6 is raised by actuating the control device 8 and the outflow nozzle 4 is thereby opened.
  • the inert gas jet emerging through the nozzle 12 can be used to support the atomization of the alloy stream flowing into the atomization chamber 13.
  • the resistance-heated melting furnace 3 can be used for casting the alloy in the form, block and continuous casting process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)

Claims (12)

1. Procédé pour la fabrication d'alliages de haute pureté qui comporte les stades suivants:
a) fusion de l'alliage dans un creuset à induction et traitement sous vide du métal liquide;
b) transvasement du métal liquide sous vide dans un deuxième récipient;
c) coulée du métal liquide par un orifice de coulée situé au-dessous de la surface du bain,
caractérisé en ce qu'il comporte les stades suivants:
d) traitement d'affinage du métal liquide dans le deuxième récipient, la totalité du métal liquide étant portée à la température de coulée nécessaire et étant maintenue sans agitation du bain à cette température de coulée jusqu'à ce que les impuretés soient remontées à la surface;
e) coulée du métal liquide maintenu à la température de coulée;
f) arrêt de la coulée avant que les impuretés remontées à la surface du bain puissent être entraînées à l'extérieur.
2. Procédé pour la fabrication d'alliages de haute pureté qui comporte les stades suivants:
a) fusion de l'alliage dans un creuset à induction et traitement sous vide du métal liquide;
b) transvasement du métal liquide sous vide dans un deuxième récipient;
c) coulée du métal liquide par un orifice de coulée situé au-dessous de la surface du bain, caractérisé en ce qu'il comporte les stades suivants:
d) traitement d'affinage du métal liquide dans le deuxième récipient avec introduction de gaz inerte dans la zone inférieure du récipient, la totalité du métal liquide étant portée à la température du coulée nécessaire;
e) maintien du métal liquide à la température de coulée sans agitation du bain jusqu'à ce que les impuretés soient remontées à la surface;
f) coulée du métal liquide maintenu à la température de coulée;
g) arrêt de la coulée avant que les impuretés remontées à la surface du bain puissent être entraînées à l'extérieur.
3. Installation pour l'application du procédé selon l'une des revendications 1 ou 2 comportant un creuset à induction (1) situé dans une installation de coulée sous vide (2), un deuxième récipient situé dans l'installation de coulée sous vide et comportant un orifice de coulée (4) situé dans sa partie inférieure et comportant un dispositif d'obturation (5) et une cavité sous-jacente (13) pour la solidification de t'ai- liage liquide, caractérisée en ce que le deuxième récipient est un creuset de fusion (3) monté à poste fixe et muni de moyens de chauffage.
4. Installation selon la revendication 3, caractérisée en ce que le deuxième creuset de fusion (3) est un four de fusion chauffé par résistance.
5. Installation selon la revendication 3, caractérisée en ce que le deuxième creuset de fusion (3) peut être chauffé par induction par l'intermédiaire d'un suscepteur.
6. Installation selon la revendication 3, caractérisé en ce que le deuxième creuset de fusion (3) peut fonctionner à haute fréquence.
7. Installation selon l'une des revendications 3 à 6, caractérisée en ce que la partie inférieure du deuxième creuset de fusion (3) comporte des buses (10) pour l'introduction de gaz inerte.
8. Installation selon l'une des revendications 3 à 7, caractérisée en ce que le dispositiv d'obturation (5) comporte une tige d'obturation (6) en métal entourée d'un revêtement (9) résistant à la chaleur.
9. Installation selon la revendication 8, caractérisée en ce que la partie inférieure de la tige d'obturation (6) comporte des orifices (11, 12) pour le passage de gaz inerte.
10. Installation selon la revendication 9, caractérisée en ce que les orifices (11) ménagés à la partie inférieure de la tige d'obturation (6) sont dirigés latéralement vers la cavité du deuxième creuset de fusion (3) destinée à recevoir l'alliage.
11. Installation selon l'une des revendications 9 ou 10, caractérisée en ce que la tige d'obturation (6) comporte un orifice de sortie (12) dirigé vers i'orifice de coulée (4) du deuxième creuset de coulée (3).
12. Installation selon l'une des revendications 8 à 11, caractérisée en ce que le dispositif d'obturation (5) peut être refroidi par un réfrigérant.
EP84110654A 1983-09-26 1984-09-07 Procédé et installation pour la fabrication d'alliages de haute pureté Expired EP0137315B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84110654T ATE34775T1 (de) 1983-09-26 1984-09-07 Verfahren und anlage zum herstellen von hochreinen legierungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3334733 1983-09-26
DE3334733A DE3334733C2 (de) 1983-09-26 1983-09-26 Verfahren und Anlage zum Herstellen von hochreinen Legierungen

Publications (3)

Publication Number Publication Date
EP0137315A2 EP0137315A2 (fr) 1985-04-17
EP0137315A3 EP0137315A3 (en) 1985-08-21
EP0137315B1 true EP0137315B1 (fr) 1988-06-01

Family

ID=6210057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110654A Expired EP0137315B1 (fr) 1983-09-26 1984-09-07 Procédé et installation pour la fabrication d'alliages de haute pureté

Country Status (5)

Country Link
US (1) US4584015A (fr)
EP (1) EP0137315B1 (fr)
JP (1) JPS6096738A (fr)
AT (1) ATE34775T1 (fr)
DE (1) DE3334733C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4664703A (en) * 1986-06-09 1987-05-12 Inland Steel Company Method for suppressing fuming in molten steel
US4948423A (en) * 1989-07-21 1990-08-14 Energy Conversion Devices, Inc. Alloy preparation of hydrogen storage materials
WO1995032312A1 (fr) * 1994-05-25 1995-11-30 Hitachi Metals, Ltd. Procede et appareil d'affinage de metal fondu
DE69430541T2 (de) * 1994-11-25 2002-10-31 Hitachi Metals Ltd Verfahren zum raffinieren von metall
US6340376B1 (en) * 1998-02-17 2002-01-22 Energy Conversion Devices, Inc. Method for combining metals with different melting points
US8061444B2 (en) * 2008-05-22 2011-11-22 Schlumberger Technology Corporation Methods and apparatus to form a well
CN106621429B (zh) * 2015-07-20 2019-04-19 中国科学院上海应用物理研究所 密闭式蒸馏熔盐的方法及蒸馏装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2854228A (en) * 1954-10-14 1958-09-30 Nat Res Corp Vacuum furnace useful in the production of metals
NL102132C (fr) * 1956-03-31
US3230074A (en) * 1962-07-16 1966-01-18 Chrysler Corp Process of making iron-aluminum alloys and components thereof
US3185565A (en) * 1962-11-16 1965-05-25 Pennsalt Chemicals Corp Method and apparatus for safe operation of vacuum chambers
DE1214359B (de) * 1963-04-05 1966-04-14 Balzers Vakuum G M B H Anlage zum Schmelzen und Giessen unter Vakuum
DE1291760B (de) * 1963-11-08 1969-04-03 Suedwestfalen Ag Stahlwerke Verfahren und Vorrichtung zum diskontinuierlichen und kontinuierlichen Vakuum-Schmelzen und -Giessen von Staehlen und stahlaehnlichen Legierungen (Superiegierungen)
DE1228291B (de) * 1963-11-20 1966-11-10 Standard Messo Duisburg Verfahren und Vorrichtung zum nachtraeglichen Entgasen geschmolzener Staehle
US3467167A (en) * 1966-09-19 1969-09-16 Kaiser Ind Corp Process for continuously casting oxidizable metals
GB1260051A (en) * 1968-04-03 1972-01-12 Air Reduction Improvements in or relating to the manufacture of metal products
US3536125A (en) * 1968-09-17 1970-10-27 Pennwalt Corp Multiple tundish system for metal refining plant
US3764297A (en) * 1971-08-18 1973-10-09 Airco Inc Method and apparatus for purifying metal
US3798025A (en) * 1971-12-29 1974-03-19 Allegheny Ludlum Ind Inc Vacuum decarburization in rh and dh type degassing systems
DE2501603B2 (de) * 1975-01-16 1977-08-25 Institut problem htja Akademn Nauk Ukrainskoj SSR, Kiew (Sowjetunion) Einrichtung zur vakuumbehandlung fluessiger metalle

Also Published As

Publication number Publication date
DE3334733A1 (de) 1985-04-25
JPS6096738A (ja) 1985-05-30
US4584015A (en) 1986-04-22
EP0137315A2 (fr) 1985-04-17
EP0137315A3 (en) 1985-08-21
DE3334733C2 (de) 1985-08-14
ATE34775T1 (de) 1988-06-15

Similar Documents

Publication Publication Date Title
DE4320766C2 (de) Vorrichtung zum Einschmelzen einer festen Schicht aus elektrisch leitfähigem Material
DE2710072C3 (de) Vorrichtung zur Behandlung von geschmolzenem Metall mit einem hochreaktiven Behandlungsmittel
EP0137315B1 (fr) Procédé et installation pour la fabrication d'alliages de haute pureté
EP0814928A1 (fr) Procede et dispositif d'alimentation d'une coquille en fonte metallique
EP0461306A1 (fr) Four de fusion à induction
DE2411507A1 (de) Verfahren und vorrichtung zur behandlung von metallschmelzen
EP0180741A1 (fr) Procédé et dispositif pour maintenir ou élever la température d'un bain métallique
DE1483560A1 (de) Vorrichtung zur UEberfuehrung von fliessfaehigem Material,insbesondere zur UEberfuehrung von geschmolzenem Metall zu einer Stranggiessvorrichtung
DE3211861A1 (de) Verfahren und vorrichtung zur herstellung von hochreinen keramikfreien metallpulvern
DE3231316A1 (de) Verfahren und vorrichtung zur steuerung des abgiessens einer schmelze aus einem schmelzenbehaelter mit einer bodenoeffnung
EP1076603B1 (fr) Procede de traitement d'une masse metallique en fusion, en particulier d'une masse de metal leger, et four de dosage blinde et alimente en gaz protecteur
DE1041652B (de) Verfahren zum Betrieb einer Vakuum-Induktionsschmelzanlage
DE2655865A1 (de) Verfahren zum kontinuierlichen giessen von stahl
EP0433419B1 (fr) Dispositif de jonction par la fonte exempte de scories pour installations de coulee continue
DE3734406A1 (de) Verfahren und vorrichtung zur herstellung von gusskoerpern aus druckbehandelten schmelzen aus stahllegierungen
EP0047431A1 (fr) Procédé et installation de production de poudre métallique très pure
DE2062114A1 (en) Pure, killed steel mfr - for deep-drawn quality sheet steel
EP1196258B1 (fr) Dispositif de purification d'acier fondu
EP4192636B1 (fr) Système pour charger, faire fondre et couler des métaux et des alliages métalliques dans une atmosphère de gaz sous vide et/ou de protection et procédé de fusion et de coulée quasi continues de métal dans une atmosphère de gaz sous vide et/ou de protection
DE2452611A1 (de) Verfahren und vorrichtung zum raffinieren und/oder zum frischen einer metallschmelze
DE2811546A1 (de) Verfahren und vorrichtung zum kontinuierlichen giessen von stahl
DE3640269C1 (en) Method employed in the continuous casting of steel melted in a manner which gives a low hydrogen content
DE2839870A1 (de) Verfahren und vorrichtung zum metallguss
DE2135289A1 (fr)
DE2029687A1 (de) Verfahren zum Abgießen von Metall oder Metallegierungen in Stranggußkokillen

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 FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: C21C 5/52

RTI1 Title (correction)
RTI1 Title (correction)
AK Designated contracting states

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

17P Request for examination filed

Effective date: 19850807

17Q First examination report despatched

Effective date: 19860429

D17Q First examination report despatched (deleted)
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 34775

Country of ref document: AT

Date of ref document: 19880615

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: LEYBOLD AKTIENGESELLSCHAFT

Effective date: 19890225

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

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

Ref country code: FR

Payment date: 19890807

Year of fee payment: 6

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

Ref country code: SE

Payment date: 19890808

Year of fee payment: 6

R26 Opposition filed (corrected)

Opponent name: LEYBOLD AKTIENGESELLSCHAFT

Effective date: 19890225

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

Ref country code: GB

Payment date: 19890831

Year of fee payment: 6

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

Ref country code: BE

Payment date: 19890913

Year of fee payment: 6

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

Ref country code: AT

Payment date: 19890928

Year of fee payment: 6

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900908

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

Ref country code: BE

Effective date: 19900930

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

BERE Be: lapsed

Owner name: FRIED. KRUPP G.M.B.H.

Effective date: 19900930

27W Patent revoked

Effective date: 19901113

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state
EUG Se: european patent has lapsed

Ref document number: 84110654.5

Effective date: 19910527