WO2006132016A1 - Procede de fabrication d'un lingot - Google Patents

Procede de fabrication d'un lingot Download PDF

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Publication number
WO2006132016A1
WO2006132016A1 PCT/JP2006/305099 JP2006305099W WO2006132016A1 WO 2006132016 A1 WO2006132016 A1 WO 2006132016A1 JP 2006305099 W JP2006305099 W JP 2006305099W WO 2006132016 A1 WO2006132016 A1 WO 2006132016A1
Authority
WO
WIPO (PCT)
Prior art keywords
ingot
consumable electrode
producing
molten metal
small
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.)
Ceased
Application number
PCT/JP2006/305099
Other languages
English (en)
Japanese (ja)
Inventor
Makoto Chujoya
Kazumi Yamamoto
Teppei Okumura
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to EP06729120A priority Critical patent/EP1889675A4/fr
Publication of WO2006132016A1 publication Critical patent/WO2006132016A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • B22D7/005—Casting ingots, e.g. from ferrous metals from non-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
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/08—Divided ingot moulds
    • 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
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1295—Refining, melting, remelting, working up of titanium
    • 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 present invention relates to a method for manufacturing an ingot, and more particularly to a method for manufacturing an ingot capable of economically obtaining a large and homogeneous ingot. For example, when mass-producing Ti and Ti alloy wrought materials, large and homogeneous ingots of several tons are required.
  • the present invention relates to a method for producing an ingot which can economically obtain a large and homogeneous ingot even when it contains a high melting point active metal such as Ti. Background art
  • an ingot manufacturing method in particular, a manufacturing method of an ingot containing an active metal having a high melting point such as Ti, a metal raw material is melted by a cold crucible induction melting method, and the molten metal is shaped into a bowl.
  • a method of inserting into an ingot see, for example, Patent Document 1.
  • a method is known in which a consumable electrode made from a metal raw material is remelted by a vacuum arc remelting method, and the molten metal is poured into a mold to make an ingot!
  • Patent Document 2 a method is known in which a consumable electrode made from a metal raw material is remelted by a vacuum arc remelting method, and the molten metal is poured into a mold to make an ingot!
  • the conventional method of melting a metal raw material by a cold crucible induction melting method has an advantage that the molten metal is uniformly mixed because the molten metal is mixed together. Therefore, by sampling and analyzing a part of the molten metal, it is possible to grasp the components of the entire molten metal, and if the components are not aimed, the components can be adjusted by additionally charging the necessary raw materials. It is also possible to plan.
  • the conventional method for producing an ingot by remelting a consumable electrode made of a metal raw material by a vacuum arc remelting method can produce a large ingot of about several tons.
  • the consumable electrode used in the vacuum arc remelting method is manufactured by laminating metal raw materials in the axial direction, so that the axial component becomes inhomogeneous, and such a consumable electrode is used.
  • the manufactured ingot also has a problem that the axial component becomes inhomogeneous.
  • Patent Document 1 Japanese Patent Laid-Open No. 2001-131651
  • Patent Document 2 JP-A-9-31558
  • the problem to be solved by the present invention is an ingot capable of economically obtaining a large and homogeneous ingot even when it contains a high melting point active metal such as Ti.
  • the manufacturing method is provided.
  • the present invention for solving the above-mentioned problems is that an ingot is formed from a molten metal melted by a cold crucible induction melting method, a consumable electrode is formed using the ingot, and then the consumable electrode is remelted by a vacuum arc.
  • the present invention relates to a method for producing an ingot characterized by remelting by a method and forging a large ingot from the molten metal. According to this method, the components of the ingot produced by the cold crushed induction melting method can be adjusted within the target range, and the entire ingot can be made a homogeneous component. The ingredients are also homogeneous. Therefore, if the consumable electrode is remelted by the vacuum arc remelting method, a large and uniform ingot can be manufactured.
  • Process A Metal raw material is melted by cold crucible induction melting method, and the molten metal is small. The process of forging a small ingot by inserting into a mold mold.
  • Step B A step of bundling a plurality of forged small ingots after repeating the same operation as step A once or twice or more.
  • Process C Process that uses the material bundled in Process B as a consumable electrode, remelts it by vacuum arc remelting method, and inserts the molten metal into a large mold to produce a large ingot.
  • Step a A process in which a metal raw material is melted by a cold crucible induction melting method, and the molten metal is poured into a part of a large saddle to make a small ingot corresponding to the part.
  • Step b A step in which the same operation as step a is repeated one or more times, and the ingot is added in a large bowl.
  • Process c A process in which the material added in process b is used as a consumable electrode, remelted by a vacuum arc remelting method, and the molten metal is poured into a large mold to produce a large ingot.
  • step A of the former method a metal raw material is melted by a cold crucible induction melting method, and the molten metal is poured into a small bowl to produce a small ingot.
  • the small ingot is a relative meaning of a small ingot compared to the large ingot obtained in the process C, and its mass is not particularly limited. This means an ingot of the order.
  • Step B of the former method the same operation as Step A is further repeated once or twice or more, and then a plurality of forged small ingots are bundled.
  • the shape of each small ingot is not particularly limited as long as it can be used as a consumable electrode for vacuum arc remelting by bundling them in B process and bundling in C process!
  • the means of bundling is not particularly limited, but usually multiple small ingots are welded at their joints, and vacuum arc remelting in the C process.
  • the shape of the consumable electrode used in the method is not particularly limited as long as it can be used as a consumable electrode for vacuum arc remelting by bundling them in B process and bundling in C process!
  • the means of bundling is not particularly limited, but usually multiple small ingots are welded at their joints, and vacuum arc remelting in the C process.
  • the shape of the consumable electrode used in the method is not particularly limited as long as it can be used as a consumable electrode for vacuum
  • the large ingot is a large ingot compared to the small ingot obtained in the process A, and its mass is not particularly limited. It means a degree of ingot.
  • step a of the latter method a metal raw material is melted by a cold crucible induction melting method, and the molten metal is poured into a part of a large bowl to produce a small ingot corresponding to the part.
  • a metal raw material is melted by a cold crucible induction melting method, and the molten metal is poured into a part of a large bowl to produce a small ingot corresponding to the part.
  • “large” or “small” is a relative meaning as described above.
  • step b of the latter method the same operation as step a is further repeated once or twice or more, and the ingot is added in a large bowl.
  • the shape of each ingot to be added in a large saddle is not particularly limited as long as it can be used as a consumable electrode in the vacuum arc remelting method by adding them in step c.
  • the means for adding is not particularly limited, and can be sequentially laminated, or these can be removed sequentially using a dummy formwork, partition plate, etc. A small ingot that solidifies first is integrated with a small ingot that solidifies first.
  • step c of the latter method the material added in step b is used as a consumable electrode, remelted by the vacuum arc remelting method, and the molten metal is poured into a large vertical mold to produce a large ingot.
  • “large” is a relative meaning as described above.
  • the former method of bundling a plurality of small ingots so as to be joined along the surface along the axial direction of the consumable electrode used in the C process, or in the b process the ingot
  • the consumable electrodes used in step c are successively added on the surface along the axial direction. According to these methods, since the components in the axial direction of the ingot produced in step A or step a are uniform, they are bundled so as to be joined on the surface along the axial direction of the consumable electrode, or sequentially added.
  • a consumable electrode having a uniform component in the axial direction can be manufactured, so that a large ingot having a uniform component as a whole can be easily manufactured.
  • Ma Furthermore, according to these methods, even if the components of each ingot produced in the process A or the process a are slightly different, they are bundled in the process B, or the consumable electrodes manufactured by sequentially adding them in the process b are redissolved. As long as the molten metal of each ingot is mixed, the component may be within the range of the target component of the large ingot. Therefore, for example, if an element of the first ingot produced exceeds the target range, the adjustment of the element will be adjusted if the element of the next ingot to be produced is less than the target range. It is possible.
  • the former method of bundling a plurality of small ingots so as to be joined on the surface along the radial direction of the consumable electrode used in the C process, and in the b process, the ingot is also advantageous. According to these methods, a large ingot having a uniform axial component can be produced without using a specially shaped saddle.
  • a large ingot having a uniform axial component can be produced without using a specially shaped saddle.
  • the type and composition of the metal raw material used in step A or step a is not particularly limited, but it can be high as Ti, Nb, W, Zr or Ta.
  • the active metal having a melting point or an alloy thereof is highly effective, the effect is higher when it is Ti or Ti alloy.
  • a part of the molten metal is sampled and analyzed, and the molten metal composition being melted is readjusted based on the result. Is preferred.
  • FIG. 1 is a perspective view illustrating a joining form of consumable electrodes used in the present invention.
  • FIG. 2 is a perspective view illustrating another joining form of consumable electrodes used in the present invention.
  • FIG. 3 is a perspective view illustrating still another joining form of the consumable electrode used in the present invention.
  • FIG. 4 is a perspective view illustrating the state of the first swaging operation in the present invention.
  • FIG. 5 is a cross-sectional view illustrating the same state as FIG.
  • FIG. 6 is a cross-sectional view illustrating the state of the next swaging operation of FIG. 5 in the present invention.
  • FIG. 7 is a cross-sectional view illustrating the state of the next swaging operation of FIG. 6 in the present invention.
  • FIG. 8 is a cross-sectional view illustrating the state of the next swaging operation of FIG. 7 in the present invention.
  • FIG. 9 is a cross-sectional view illustrating the state of the next swaging operation of FIG. 8 in the present invention.
  • FIG. 10 is a cross-sectional view illustrating the state of the next swaging operation of FIG. 9 in the present invention.
  • FIG. 11 is a cross-sectional view illustrating the state of the next swaging operation of FIG. 10 in the present invention.
  • FIG. 12 is a cross-sectional view illustrating the state of the next swaging operation of FIG. 11 in the present invention.
  • FIG. 13 is a cross-sectional view illustrating the state of the next swaging operation of FIG. 12 in the present invention.
  • FIG. 1 is a perspective view illustrating a joining state of consumable electrodes used in the former method among the production methods of the present invention.
  • a single consumable electrode 1 is formed.
  • FIG. 2 is a perspective view illustrating another joining form of the consumable electrode used in the former method of the manufacturing method of the present invention.
  • a total of four small ingots 2a to 2d, which are shaped like a cylinder cut by three planes parallel to the axial direction, are bundled together by welding in a state of being joined by planes along the axial direction.
  • a single consumable electrode 2 is formed.
  • FIG. 1 is a perspective view illustrating a joining state of consumable electrodes used in the former method among the production methods of the present invention.
  • FIG. 3 is a perspective view illustrating still another bonding form of the consumable electrode used in the former method of the manufacturing method of the present invention. It is shaped like a cylinder cut by three planes parallel to the radial direction.A total of four small ingots 3a to 3d are melted in a state where they are joined on the plane along the radial direction. They are bundled by contact to form one consumable electrode 3.
  • FIGS. 4 to 13 are diagrams illustrating the steps of the a process and the b process in the latter method of the manufacturing method of the present invention
  • FIG. 4 is a perspective view
  • FIGS. 5 to 13 are cross-sectional views).
  • 4 and 5 dummy molds 4a to 4d having the same shape are slidably fitted to each other in a large saddle 4 having a cylindrical space.
  • the mold 4a is removed, and the molten metal melted by the cold crucible induction melting method is poured into the space corresponding to the mold 4a formed there to produce a small ingot 5a.
  • FIGS. 6 and 7 the mold 4a is removed, and the molten metal melted by the cold crucible induction melting method is poured into the space corresponding to the mold 4a formed there to produce a small ingot 5a.
  • FIGS. 6 and 7 the mold 4a is removed, and the molten metal melted by the cold crucible induction melting method is poured into the space corresponding to the mold
  • the mold 4b is removed, and a small ingot 5b is manufactured by pouring molten metal melted by the cold-cable induction melting method into the space corresponding to the mold 4b formed there. Add to ingot 5a and unite. Further, in FIGS. 10 and 11, the mold 4c is removed, and a small ingot 5c is manufactured simultaneously with the molten metal melted by the cold crucible induction melting method into the space corresponding to the mold 4c formed there. , Add to 5b and integrate.
  • the mold 4d is removed, and the molten metal melted by the cold crucible induction melting method is poured into the space corresponding to the mold 4d formed there, and at the same time, a small ingot 5d is manufactured and the ingot 5a, Add to 5b and 5c and integrate.
  • the one that has been made into a single piece is used as a consumable electrode in the vacuum arc remelting method in step c.
  • the latter method can be performed by sequentially laminating the molten metal in the vertical mold in addition to the method using the dummy mold.
  • the molten metal can be sequentially laminated in the vertical direction of the bowl shape, or the molten metal can be sequentially laminated with the upper force in a state where the bowl shape is laid down.
  • Metal raw material Ti alloy (6 A1— 4 V— Ti)
  • Coldcrucible Induction Melting Input power 3000kW, frequency 2500Hz, crucible inner diameter 700mm, single melting 450kg, mass of each ingot 5a-5d 400kg
  • Vacuum arc remelting current 15kA, voltage 35V, vacuum lPa, crucible inner diameter Z consumable electrode outer diameter ratio 1ZO. 85, mass of large forged ingot 1.6t
  • Example 1 Press-formed metal raw material for Ti alloy was used as a consumable electrode, and the primary vacuum arc melting was performed under the same conditions as in Example 1, and the same size as in Example 1 was obtained from the molten metal. A consumable electrode for redissolution was prepared. Example using this consumable electrode for remelting
  • Example 1 Secondary vacuum arc melting (vacuum arc remelting) was performed under the same conditions as in 1. An ingot having the same size as that of Example 1 was produced from the molten metal. This ingot was analyzed in the same manner as in Example 1, and the average value is shown in Table 1.
  • Example 1 Comparative Example 1 and Table 1 showing these results, according to the present invention, this is the case where a high melting point active metal such as Ti is contained. However, a large and homogeneous ingot can be obtained economically.
  • Table 1 shows the results of the manufacturing method according to the present invention when the latter method is used. However, almost the same results are obtained when the former method is omitted. ing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un lingot, selon lequel un lingot de grande taille homogène peut être obtenu de manière peu coûteuse, même lorsqu'il contient un métal actif à point de fusion élevé, tel que Ti. Un lingot de grande taille est obtenu par moulage à partir d'un mélange fondu obtenu par un procédé de fusion par induction en creuset froid, formation d'une électrode fusible à partir du lingot, refusion de l'électrode fusible selon un procédé de refusion à l'arc sous vide et moulage du lingot de grande taille à partir du mélange fondu obtenu.
PCT/JP2006/305099 2005-06-09 2006-03-15 Procede de fabrication d'un lingot Ceased WO2006132016A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06729120A EP1889675A4 (fr) 2005-06-09 2006-03-15 Procede de fabrication d'un lingot

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-169319 2005-06-09
JP2005169319A JP2006341280A (ja) 2005-06-09 2005-06-09 インゴットの製造方法

Publications (1)

Publication Number Publication Date
WO2006132016A1 true WO2006132016A1 (fr) 2006-12-14

Family

ID=37498225

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/305099 Ceased WO2006132016A1 (fr) 2005-06-09 2006-03-15 Procede de fabrication d'un lingot

Country Status (6)

Country Link
US (1) US20070193710A1 (fr)
EP (1) EP1889675A4 (fr)
JP (1) JP2006341280A (fr)
CN (1) CN101043959A (fr)
RU (1) RU2007119266A (fr)
WO (1) WO2006132016A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012144561A1 (fr) * 2011-04-22 2012-10-26 新日本製鐵株式会社 Brame de titane destinée au laminage à chaud et procédé de fabrication de celle-ci
CN106513599A (zh) * 2016-11-10 2017-03-22 攀钢集团攀枝花钢铁研究院有限公司 高温耐蚀合金电极锭的浇注方法
CN112746176B (zh) * 2020-12-29 2024-03-22 常州中钢精密锻材有限公司 控制esr铸锭中微量元素分布的方法及其应用

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0931558A (ja) * 1995-07-19 1997-02-04 Daido Steel Co Ltd 真空アーク再溶解法
JP2001131651A (ja) * 1999-10-28 2001-05-15 Kobe Steel Ltd コールドクルーシブル誘導溶解法
JP2001293550A (ja) * 2000-04-13 2001-10-23 Ishikawajima Harima Heavy Ind Co Ltd 微結晶インゴットの製造方法と装置
JP2003307390A (ja) * 2002-04-16 2003-10-31 Fuji Electric Co Ltd コールドクルーシブル溶解鋳造装置とその溶解鋳造方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775091A (en) * 1969-02-27 1973-11-27 Interior Induction melting of metals in cold, self-lined crucibles
US3727300A (en) * 1969-11-20 1973-04-17 Riken Piston Ring Ind Co Ltd Method of joining consumable electrode in electroslag melting
DE2822657B2 (de) * 1978-05-24 1980-06-12 Vereinigte Edelstahlwerke Ag (Vew), Wien Verfahren zur Herstellung von Abschmelzelektroden großen Durchmessers
US5524019A (en) * 1992-06-11 1996-06-04 The Japan Steel Works, Ltd. Electrode for electroslag remelting and process of producing alloy using the same
US5411611A (en) * 1993-08-05 1995-05-02 Cabot Corporation Consumable electrode method for forming micro-alloyed products
US6385230B1 (en) * 2001-03-14 2002-05-07 Floswerve Manage Company Homogeneous electrode of a reactive metal alloy for vacuum arc remelting and a method for making the same from a plurality of induction melted charges

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0931558A (ja) * 1995-07-19 1997-02-04 Daido Steel Co Ltd 真空アーク再溶解法
JP2001131651A (ja) * 1999-10-28 2001-05-15 Kobe Steel Ltd コールドクルーシブル誘導溶解法
JP2001293550A (ja) * 2000-04-13 2001-10-23 Ishikawajima Harima Heavy Ind Co Ltd 微結晶インゴットの製造方法と装置
JP2003307390A (ja) * 2002-04-16 2003-10-31 Fuji Electric Co Ltd コールドクルーシブル溶解鋳造装置とその溶解鋳造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1889675A4 *

Also Published As

Publication number Publication date
EP1889675A1 (fr) 2008-02-20
EP1889675A4 (fr) 2009-01-07
JP2006341280A (ja) 2006-12-21
US20070193710A1 (en) 2007-08-23
RU2007119266A (ru) 2008-11-27
CN101043959A (zh) 2007-09-26

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