EP1006205A2 - Procédé pour la fabrication des alliages homogenes par fusion et refusion - Google Patents

Procédé pour la fabrication des alliages homogenes par fusion et refusion Download PDF

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Publication number
EP1006205A2
EP1006205A2 EP99122461A EP99122461A EP1006205A2 EP 1006205 A2 EP1006205 A2 EP 1006205A2 EP 99122461 A EP99122461 A EP 99122461A EP 99122461 A EP99122461 A EP 99122461A EP 1006205 A2 EP1006205 A2 EP 1006205A2
Authority
EP
European Patent Office
Prior art keywords
melt
cold wall
crucible
alloy
arrangement
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.)
Granted
Application number
EP99122461A
Other languages
German (de)
English (en)
Other versions
EP1006205B1 (fr
EP1006205A3 (fr
Inventor
Alok Dr. Choudhury
Matthias Dr. Blum
Stefan Pleier
Georg Jarczyk
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.)
ALD Vacuum Technologies GmbH
Original Assignee
ALD Vacuum Technologies GmbH
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 ALD Vacuum Technologies GmbH filed Critical ALD Vacuum Technologies GmbH
Publication of EP1006205A2 publication Critical patent/EP1006205A2/fr
Publication of EP1006205A3 publication Critical patent/EP1006205A3/fr
Application granted granted Critical
Publication of EP1006205B1 publication Critical patent/EP1006205B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/20—Arc remelting

Definitions

  • the invention relates to a method for manufacturing of alloys according to the preamble of the claim 1.
  • the invention is particularly concerned with the melting and remelting of reactive, refractory metals and alloys in a cold wall crucible furnace under a vacuum atmosphere and / or protective gas atmosphere, preferably at vacuum pressures ⁇ 10 -1 mbar. These melting processes are used to produce homogeneous metal blocks or metal bars from chargeable starting material.
  • a disadvantage of this method is that the material preparation, especially the editing of the Consumable electrode, each time and cost intensive Labor required.
  • the melted alloy is the one to be produced Block several times to melt what is under Taking into account the above required Process times a significant loss of productivity means simply because every electrode inevitable to a block of larger diameter must be remelted.
  • the invention is therefore based on the object a method of the type described above to indicate by the alloys with extraordinary homogeneous distribution of the alloy components can be produced over the total volume.
  • the method according to the invention is a melting technique that ensures will that starting from the individual alloy components with different densities, Conditions (history of origin, lumpiness) and melting points with a desired alloy exact chemical composition becomes. Contrary to previous experience with pure VAR method has been shown that by Adherence to the melting sequence according to the invention exact chemical composition of an alloy reproducible in high quality, d. H. with a over the entire volume of the final melt Homogeneity can be produced. The problem the chemical inhomogeneity in the remelting in a pure VAR process as described above Art is solved in a simple way. The essence of the invention is that in contrast the stirring movement to the previous remelting practice and thus the mixing process in the melt pool the cold wall induction crucible for thorough mixing the melt and even distribution the alloying elements in the melt advantageous is used.
  • the alloy components in the first stage of the process as a chargeable material, which becomes a preselected alloy composition leads over a lock chamber directly into a loading area of a cold wall induction crucible. After the material has melted this in the melt pool through the through the Induction field mixed stirring field mixed. This creates a homogenized melt, which from the cold wall induction crucible via a Block removal device continuously as solidified Block is removable.
  • the method according to the invention is particularly suitable for the production of alloys which consist of refractory and / or reactive metals, such as in particular titanium or titanium compounds showing alloys.
  • the cold wall crucible is the starting material either as general cargo and / or as powder and / or as granules in front.
  • This source material becomes the first Remelt either pressed into solid blocks, which is both an insert for an optional VAR process used for block production can be used or it will via a material lock directly into a cold wall induction crucible introduced as above described.
  • FIG. 1 shows a cold wall crucible arrangement 2 shown out of a slotted crucible wall 3 in the form of a water-cooled hollow body.
  • the cooling water flow is simplicity not shown for the sake of it. However, it is also possible the cooling water through another cooling medium to replace.
  • the crucible wall 3 is of an induction coil arrangement 7 surround the necessary Provides heating, melting and stirring energy.
  • the Power supply unit for the induction coil arrangement 7 is also not shown. There the design principle of a cold wall crucible Induction coil - taken by itself - state of the Technology is a further consideration of this superfluous.
  • the induction coil arrangement 7 with a larger number of turns equipped and in individual sub-coils 20a, 20b, 20c, 20d, 20e can be divided into the independent power supply units can be connected. These can then be separated regulated or controlled by each other, to the heating power and the stirring power over the To be able to adjust the height of the crucible wall 3 in a targeted manner.
  • the entire cold wall crucible arrangement 2 is also stored the lower crucible flange 16 on stationary lower Supports 24a, 24b.
  • On the lower crucible flange 16 is that surrounded by the induction coil arrangement 7 Crucible wall 3 with all-round lower sealing elements 23 supported vacuum-tight.
  • On the Crucible wall 3 supports the upper crucible flange 14.
  • Upper sealing element 15 is provided, which a vacuum tight connection between the Crucible wall 3 and the upper crucible flange 14 forms.
  • the crucible wall 3 and the upper and lower Crucible flange 14 and 16 are coaxial with each other arranged and enclose a vertically aligned Passage zone for the material to be melted.
  • a material lock 4 which with a Lock opening 10 is vacuum-tight with respect to the outside space can be locked.
  • the alloy Material 9 is in via the lock opening 10 in introduced the lock chamber 11, correspondingly the alloy proportions of the desired alloy in terms of quantity in the lock chamber 11 are merged.
  • the to be melted alloy material 9 is in the Batch material space 34 of the passage zone of the crucible wall 3 accumulated and migrates according to that Degree of liquefaction of the entire alloy material 9 in the actual melting zone, which the Melt pool 32 forms.
  • the axial position of the Melt pools 32 is created by the arrangement of the induction coils 20a-20e through which the necessary melting and stirring energy into the melt be fed inductively.
  • the melt is inside of the melt pool 32 is continuously stirred, whereby the individual alloy components in the total accumulated in the melt pool 32 Melt are homogenized.
  • the solidification zone closes in the lower area in which the solidified block of material 30 is supported on a support base 25, which over a block withdrawal device 6 after is continuously lowered below.
  • the directions of movement are indicated by the double arrow Z.
  • the remelting process described so far takes place in a vacuum atmosphere of ⁇ 10 -1 mbar.
  • the residual atmosphere located in the cold-wall crucible arrangement 2 is evacuated in a known manner via suction ports 12 using vacuum pumps, not shown in the drawings.
  • the cold wall crucible shown in Figure 2 60 consists essentially of the crucible bottom 17, on which the crucible wall 21 is placed is.
  • the crucible wall is known Way from a palisade arrangement 21,21 ', ..., whereby between the individual palisades 21, 21 ', ... distances for penetration of the melting and stirring magnetic field are provided. At these intervals are usually sealing elements made of an insulating material.
  • the stirring or melting magnetic field is over an induction coil 19, which individual coil turns 20a-20d, in a known manner Power supply devices, not shown in Figure 2 generated.
  • the first melt through a VAR process are the Alloy components z. B. as a powder, as granules or as a lumpy material, which to a fixed pressed block with a defined Mass composition is pressable.
  • This individual Blocks 40, 41 (see FIG. 3a) become Forming a consumable electrode 42 and at the connecting seams 50, 52 with one another welded.
  • the blocks 40, 41 is in particular an electron beam welding process intended.
  • the to a consumable electrode 42 merged blocks 40,41 are then in a first, not shown in the figures Vacuum arc remelting process first melted, whereby the starting material in the Melt is homogeneously distributed to a certain extent becomes.
  • melt produced in this way is then transferred to suitable molds, in which the melt material to a block 44 (see Figure 3b) solidified.
  • a block 44 (see Figure 3b) solidified.
  • the volume of the block chosen so that this the crucible volume of the cold wall crucible shown in Figure 2 60 fills out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
EP99122461A 1998-11-16 1999-11-11 Procédé pour la fabrication des alliages homogenes par fusion et refusion Expired - Lifetime EP1006205B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19852747 1998-11-16
DE19852747A DE19852747A1 (de) 1998-11-16 1998-11-16 Verfahren zum Einschmelzen und Umschmelzen von Materialien zum Herstellen von homogenen Metallegierungen

Publications (3)

Publication Number Publication Date
EP1006205A2 true EP1006205A2 (fr) 2000-06-07
EP1006205A3 EP1006205A3 (fr) 2000-06-14
EP1006205B1 EP1006205B1 (fr) 2002-09-04

Family

ID=7887930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99122461A Expired - Lifetime EP1006205B1 (fr) 1998-11-16 1999-11-11 Procédé pour la fabrication des alliages homogenes par fusion et refusion

Country Status (6)

Country Link
US (1) US20030010472A1 (fr)
EP (1) EP1006205B1 (fr)
JP (1) JP2000144279A (fr)
AT (1) ATE223509T1 (fr)
DE (2) DE19852747A1 (fr)
ES (1) ES2182447T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3026133A1 (fr) * 2014-11-27 2016-06-01 Ald Vacuum Technologies GmbH Procede de fusion pour alliages

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1247872A1 (fr) * 2001-03-13 2002-10-09 Solar Applied Material Technology Corp. Procédé de préparation d'une cible de pulverisation
DE10156336A1 (de) * 2001-11-16 2003-06-05 Ald Vacuum Techn Gmbh Verfahren zur Herstellung von Legierungs-Ingots
DE102009056504B4 (de) * 2009-12-02 2015-05-28 Heraeus Precious Metals Gmbh & Co. Kg Verfahren zur Herstellung einer einschlussfreien Nb-Legierung aus pulvermetallurgischem Vormaterial für eine implantierbare medizinische Vorrichtung
DE102010049033A1 (de) 2010-10-21 2012-04-26 Rst Gmbh Verfahren zur Herstellung von Titanrohlingen
CN102032783B (zh) * 2011-01-14 2012-10-10 李碚 熔炼钛或钛合金的冷坩埚感应熔炼拉锭方法
CN105108339B (zh) * 2015-08-31 2017-04-19 沈阳海纳鑫科技有限公司 一种基于钛及钛合金金属丝材的增材制造方法
KR101932729B1 (ko) * 2017-08-22 2019-03-20 주식회사 세일메탈 유도가열장치 및 이를 이용한 잉곳 균질화 방법

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0276544A1 (fr) * 1986-12-04 1988-08-03 The Duriron Company, Inc. Procédé de fusion par induction de métaux et d'alliages réactifs
GB2200979A (en) * 1987-02-14 1988-08-17 Inductotherm Europ Induction melting
EP0538024A1 (fr) * 1991-10-16 1993-04-21 Shinko Denki Kabushiki Kaisha Creuset de fusion par induction à paroi segmentée et refroidie
GB2265805A (en) * 1992-03-11 1993-10-06 Leybold Durferrit Gmbh A combined electro-slag remelting/cold induction crucible system
GB2270145A (en) * 1992-08-26 1994-03-02 Leybold Durferrit Gmbh Induction melting and casting furnace
GB2297764A (en) * 1995-02-10 1996-08-14 Ald Vacuum Techn Gmbh A process for the production of alloys
US5677926A (en) * 1996-06-07 1997-10-14 Ald Vacuum Technologies Gmbh Crucible for the inductive melting of metals

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US4418741A (en) * 1979-11-26 1983-12-06 Bondarenko Oleg P Method of controlling relative movement between an ingot and a mold
SE8000756L (sv) * 1980-01-31 1981-08-01 Asea Ab Anordning vid kontinuerlig gjutning (likstromsomrorning)
FI844183L (fi) * 1983-10-28 1985-04-29 Werner Schatz Foerfarande foer framstaellning av haordaemnespartiklar innehaollande metallblock, -halvfabrikat eller profilmaterial.
JPS60251235A (ja) * 1984-05-29 1985-12-11 Toho Titanium Co Ltd Ｎｂ−Ｔｉ合金溶製用の消毛電極
CH680086A5 (fr) * 1990-05-09 1992-06-15 Asea Brown Boveri
IL100136A (en) * 1991-11-24 1994-12-29 Ontec Ltd Method and device for producing homogeneous alloys
FR2720971B1 (fr) * 1994-06-08 1996-08-30 Centre Nat Rech Scient Dispositif de traitement de matériaux par micro-ondes.
JP3316108B2 (ja) * 1994-07-14 2002-08-19 川崎製鉄株式会社 鋼の連続鋳造方法
US5972282A (en) * 1997-08-04 1999-10-26 Oregon Metallurgical Corporation Straight hearth furnace for titanium refining

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0276544A1 (fr) * 1986-12-04 1988-08-03 The Duriron Company, Inc. Procédé de fusion par induction de métaux et d'alliages réactifs
GB2200979A (en) * 1987-02-14 1988-08-17 Inductotherm Europ Induction melting
EP0538024A1 (fr) * 1991-10-16 1993-04-21 Shinko Denki Kabushiki Kaisha Creuset de fusion par induction à paroi segmentée et refroidie
GB2265805A (en) * 1992-03-11 1993-10-06 Leybold Durferrit Gmbh A combined electro-slag remelting/cold induction crucible system
GB2270145A (en) * 1992-08-26 1994-03-02 Leybold Durferrit Gmbh Induction melting and casting furnace
GB2297764A (en) * 1995-02-10 1996-08-14 Ald Vacuum Techn Gmbh A process for the production of alloys
US5677926A (en) * 1996-06-07 1997-10-14 Ald Vacuum Technologies Gmbh Crucible for the inductive melting of metals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MULLER, F.G. (ALD VACUUM TECHNOLOGIES) ET AL: "Electroslag refining as a liquid metal source for ceramic free powder atomization." PLANSEE AG. REUTTE, TYROL, AUSTRIA. MAY 1997. 641-652, PHOTOMICROGRAPHS, GRAPHS, 12 REF. CONFERENCE: 14TH INTERNATIONAL PLANSEE SEMINAR '97. VOL. 1: METALLIC HIGH TEMPERATURE MATERIALS, TIROL, AUSTRIA, 12-16 MAY 1997, XP002134902 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3026133A1 (fr) * 2014-11-27 2016-06-01 Ald Vacuum Technologies GmbH Procede de fusion pour alliages
US10196711B2 (en) 2014-11-27 2019-02-05 Ald Vacuum Technologies Gmbh Melting method for alloys

Also Published As

Publication number Publication date
US20030010472A1 (en) 2003-01-16
EP1006205B1 (fr) 2002-09-04
ES2182447T3 (es) 2003-03-01
JP2000144279A (ja) 2000-05-26
ATE223509T1 (de) 2002-09-15
EP1006205A3 (fr) 2000-06-14
DE19852747A1 (de) 2000-05-18
DE59902539D1 (de) 2002-10-10

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