WO2023128361A1 - Appareil de fabrication de lingot de titane et procédé de fabrication de lingot de titane l'utilisant - Google Patents

Appareil de fabrication de lingot de titane et procédé de fabrication de lingot de titane l'utilisant Download PDF

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Publication number
WO2023128361A1
WO2023128361A1 PCT/KR2022/019755 KR2022019755W WO2023128361A1 WO 2023128361 A1 WO2023128361 A1 WO 2023128361A1 KR 2022019755 W KR2022019755 W KR 2022019755W WO 2023128361 A1 WO2023128361 A1 WO 2023128361A1
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WIPO (PCT)
Prior art keywords
titanium
melting
ingot
plasma arc
molten metal
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Application number
PCT/KR2022/019755
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English (en)
Korean (ko)
Inventor
노윤경
이초롱
염종택
홍재근
박찬희
장근
유재섭
Original Assignee
(주)동아특수금속
한국재료연구원
한국인닥타썸(주)
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 KR1020220025133A external-priority patent/KR20230103809A/ko
Application filed by (주)동아특수금속, 한국재료연구원, 한국인닥타썸(주) filed Critical (주)동아특수금속
Priority to EP22916507.1A priority Critical patent/EP4450184A1/fr
Publication of WO2023128361A1 publication Critical patent/WO2023128361A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/005—Castings of light metals with high melting point, e.g. Be 1280 degrees C, Ti 1725 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/141—Plants for continuous casting for vertical casting
    • 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
    • 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
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • 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
    • 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 titanium ingot manufacturing apparatus and a method for manufacturing a titanium ingot using the same, and more particularly, to a titanium ingot to which PAM (Plasma Arc Melting) and ISM (Induction Skull Melting) are continuously applied.
  • the invention relates to a method for manufacturing a high-purity titanium ingot, a titanium alloy ingot, for example, a titanium alloy ingot for biomaterials using a manufacturing apparatus.
  • Biomaterials for plastic surgery or dentistry require excellent strength, toughness, wear resistance, and corrosion resistance, as well as biocompatibility that is harmless to the human body and combines with living bone.
  • Representative metal materials for living organisms that exhibit these characteristics include Ni-Cr-based stainless steel (316L), Co-Cr-Mo alloy developed under the trade name of vitalium, and titanium (Ti) alloy, and these metal materials are currently It accounts for more than 70% of implant materials for implantation in the body.
  • Stainless steel and Co-Cr-Mo alloys have been used for biomedical purposes since the 1930s and 1940s, respectively, and Ti alloys have been reported in 1952 by Per-Ingvar Br ⁇ nemark of Sweden for the osseointegration phenomenon in which Ti surfaces combine with bone tissue.
  • Ti alloy is light, non-magnetic, and has excellent biocompatibility as well as mechanical properties such as corrosion resistance, strength, and toughness.
  • Ti metal and Ti alloy are not bioactive, they are evaluated to have better biocompatibility than other biomaterials (stainless steel, vitallium) or polymer materials (PMMA, polymethyl metaacrylate) in bone formation patterns.
  • Ti-6Al4V alloy (composition: wt.%), which is most commonly used for biomedical purposes, is an alloy with a ( ⁇ + ⁇ ) type two-phase structure. come. Therefore, high-quality titanium alloy powder and ingot manufacturing technology is required.
  • titanium scrap is melted using a heating means including induction heating and plasma to form titanium molten metal, and the titanium molten metal is formed by the heating means.
  • a titanium refining and melting furnace that refines titanium scrap by removing various metal impurities and oxygen, including titanium scrap, and cools the refined material to produce titanium ingots and a titanium refining method using the same.
  • a titanium molten metal part for processing a main chamber part including the titanium molten metal part therein, a heating source part having a first function of removing metallic impurities and a second function of removing oxygen, and a scrap supplying titanium scrap to the titanium molten metal part.
  • a technology related to a titanium refining melting furnace characterized in that it comprises, is disclosed, and also, in Korean Patent No. 10-1441654, a step of washing titanium alloy scrap, a tungsten electrode so that an arc occurs in a certain direction
  • a method for manufacturing a titanium bar using a continuous non-consumable vacuum arc melting method comprising the step of processing the tip into a sharp point and installing it in a vacuum arc melting furnace, and the step of charging scrap into the inside of the hearth installed inside the vacuum arc melting furnace.
  • Korean Patent Registration No. 10-1370029 discloses a titanium scrap refining method capable of removing oxygen contained in the molten metal by supplying hydrogen plasma to the surface of the molten metal for refining the titanium scrap.
  • One of the various problems of the present invention is to provide a titanium ingot manufacturing apparatus capable of greatly improving purity while increasing meltability.
  • One of the various problems of the present invention is to provide a method for manufacturing a titanium ingot using the titanium ingot manufacturing apparatus.
  • One of the various tasks of the present invention in order to solve the above problems, is to shorten the distance between the plasma arc and the titanium alloy to completely melt the metal material and completely remove impurities to refine the titanium alloy and to obtain titanium through an induction skull melting process To provide a method for manufacturing a titanium alloy ingot for biomaterials by manufacturing an alloy ingot.
  • Titanium ingot manufacturing apparatus includes a plasma arc melting unit for melting metal scrap with a plasma arc; an induction skull melting unit for melting the molten metal melted by the plasma with an induction current; and an ingot drawing unit for drawing out the metal ingot melted and solidified by the induction current, and the plasma arc melting unit and the induction skull melting unit may be disposed in one chamber in this order.
  • a disposition height of the plasma arc melting unit may be higher than a disposition height of the induction skull melting unit.
  • the plasma arc melting unit may include a cold hearth and a plasma torch
  • the induction skull melting unit may include a cold crucible and an induction coil
  • one end of the cold hearth may be disposed above the cold crucible.
  • a method for manufacturing a titanium ingot according to exemplary embodiments of the present invention includes melting titanium scrap with a plasma arc; melting the molten titanium scrap by an induction skull method; and casting a titanium ingot with molten titanium sequentially through the plasma arc and the induction skull method.
  • the titanium scrap may be in the form of rods, chunks, chips, clips, or sponges.
  • the plasma arc melting step may include inputting the titanium scrap into a plasma arc melting unit; Melting titanium scrap into primary titanium molten metal by driving a plasma torch; and separating inclusions by flowing the primary titanium molten metal on a cold hearth or vaporizing the inclusions into vapor.
  • the cold hearth may be made of a water-cooled copper vessel.
  • the melting by the induction skull method may include introducing the primary titanium molten metal into an induction skull melting unit; melting the primary titanium molten metal into a secondary titanium molten metal by driving an induction coil; and purifying the secondary titanium molten metal in a cold crucible.
  • the plasma arc melting step and the melting step by the induction skull method may be performed independently of each other.
  • the plasma arc melting step and the melting step by the induction skull method may be continuously performed.
  • the method for manufacturing a titanium ingot according to exemplary embodiments of the present invention solves both economic effects and environmental problems at the same time by using scrap, and also reduces production costs and improves productivity due to the use of copper melting instead of ceramic refractories It is characterized by the melting of metal materials and the production of high-purity titanium ingots by independently applying two heating processes.
  • FIG. 1 is a view for explaining a titanium ingot manufacturing apparatus according to exemplary embodiments of the present invention.
  • FIG. 2 is a flowchart illustrating a method for manufacturing a titanium ingot according to exemplary embodiments of the present invention.
  • FIG. 3 is a diagram for explaining a step of melting titanium using a plasma arc melting unit according to exemplary embodiments of the present invention.
  • FIG. 4 is a view for explaining a step of melting titanium using an induction skull melting unit according to exemplary embodiments of the present invention.
  • first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term.
  • titanium may be used as “titanium”, and conversely, the term “titanium” may be used as “titanium”, and both “titanium” and “titanium” correspond to the element symbol Ti (Titanium). It can be interpreted as meaning a metal that
  • both “melting” and “melting” may mean that a material in a solid state absorbs thermal energy and changes into a material in a liquid state.
  • FIG. 1 is a view for explaining a titanium ingot manufacturing apparatus according to exemplary embodiments of the present invention.
  • a titanium ingot manufacturing apparatus 1 may include a plasma arc melting unit 10, an induction skull melting unit 20, and an ingot drawing unit 30. can
  • the plasma arc melting unit 10 may include a plasma arc melting furnace (PAM Furnace), and may include a cold hearth 13 and a plasma torch 15.
  • PAM Furnace plasma arc melting furnace
  • the metal introduced into the plasma arc melting unit 10 may be titanium scrap 100, and the titanium scrap 100 may be made of various types of raw materials such as rods, lumps, chips, clips, and sponges.
  • the cold hearth 13 may be made of, for example, a water-cooled copper container, and may precipitate High Density Inclusions (HDIs) and Low Density Inclusions (LDIs) from molten metal or vaporize them into vapor. By removing it, it can play a role of increasing the purity of the cast metal.
  • the water-cooled copper container may be a reusable copper crucible, and in this case, the copper crucible that may be destroyed or lost due to a high melting temperature may be controlled by a metal skull formed on the inner wall of the crucible. Therefore, a reaction with molten metal due to the use of a conventional ceramic crucible can be prevented.
  • High-density inclusions may be, for example, metal compounds such as WC and TaC, low-density inclusions may be metal compounds such as TiN and TiC, and high-density inclusions may be deposited on the bottom surface of the cold hearth 13 and low-density inclusions can be vaporized.
  • FIG. 1 shows that the bottom surface of the cold hearth 13 has a flat shape
  • the concept of the present invention is not necessarily limited thereto, and the cold hearth 13 may have a non-flat bottom surface. Or, it may have a bottom surface having a step difference of different heights. That is, the bottom surface of the cold hearth 13 may be configured to have a different shape for more efficiently removing high-density inclusions and/or low-density inclusions.
  • the plasma torch 15 is configured to generate a plasma arc to melt metal scrap and may be referred to as a plasma arc generator. Meanwhile, the plasma arc may be replaced with an electron beam. Although not shown, the movement of the plasma torch 15 up and down and/or left and right on the cold hearth 13 may be controlled, and the rotation of the plasma torch 15 may be controlled so that the spraying direction of the plasma arc may be adjusted. there is.
  • the titanium scrap 100 injected into the plasma arc melting unit 10 may be melted into the primary titanium molten metal 110 by a plasma arc generated from the plasma torch 15 and sprayed, Inclusions 105 included in the primary titanium molten metal 110 may be precipitated and removed as the primary titanium molten metal 110 flows on the cold hearth 13 .
  • the induction skull melting unit 20 may include an induction skull melting furnace (ISM Furnace) and may include a cold crucible 23 and an induction coil 25 .
  • ISM Furnace induction skull melting furnace
  • the cold crucible 23 may provide a space for accommodating the metal primarily melted through the plasma arc melting unit 10, and may be formed of, for example, a water-cooled copper crucible.
  • the induction coil 25 may be configured to induction-heat molten metal by generating a magnetic field by generating a current, and may be formed in a wound form of, for example, a high-frequency coil made of copper.
  • the induction coil 25 may also be referred to as a high frequency coil.
  • the magnetic field generated by the induction coil 25 can be adjusted by controlling the frequency of a power supply (not shown), and the molten metal can be secondarily melted by the magnetic field.
  • the primary titanium molten metal 110 injected into the induction skull melting unit 20 may be remelted into the secondary titanium molten metal 120 by a magnetic field formed by the induction coil 25, Thereafter, the secondary titanium molten metal 120 may be solidified on the cold crucible 23 and cast into a titanium ingot 150 . At this time, the secondary titanium molten metal 120 may be formed by additionally removing impurities or gases included in the primary titanium molten metal 110, and thus the purity and quality of the finally cast titanium ingot 150 are greatly improved. It can be.
  • the arrangement height of the plasma arc melting unit 10 may be higher than the arrangement height of the induction skull melting unit 20, and one end of the cold hearth 13 may be disposed above the cold crucible 23. there is.
  • the molten metal that is, the primary titanium molten metal 110 charged into the induction skull melting unit 20 is completely transformed into a uniform phase by convection in the cold crucible 23 through induction heating.
  • secondary titanium molten metal 120 may be formed.
  • the secondary titanium molten metal 120 in contact with the cold crucible 23 may be solidified by a water-cooled segment (not shown), and then the cold crucible 23 and the secondary titanium melt due to the generated skull.
  • a boundary layer of thin metal is formed between the molten metal 120, and the boundary layer acts as thermal resistance to reduce the heat transferred from the secondary titanium molten metal 120 to the cold crucible 23, extending the life of the cold crucible 23. can fulfill its role.
  • the melting method by the induction skull melting unit 20 may be performed by melting the metal in a metal-to-metal manner in a cold crucible 23, that is, a water-cooled copper crucible, without a refractory material in a vacuum state, and melting with the absence of a refractory material.
  • a reaction between the metal, that is, the secondary titanium molten metal 120 and oxygen may be suppressed.
  • the side surface of the secondary titanium molten metal 120 may be pushed inward from the inner side wall of the cold crucible 23, which means that the side surface of the secondary titanium molten metal 120 does not form a contact with the inner side wall of the cold crucible 23. Since there is no physical contact, it is possible to prevent the water-cooled segment from being short-circuited and reduce heat loss to the cold crucible 23 .
  • the ingot drawing unit 30 may be configured to draw a metal ingot formed by ingoing primary and secondary melted molten metal, that is, the titanium ingot 150 .
  • the ingot drawing unit 30 may be controlled so that the metal ingot is drawn through an up-and-down motion.
  • the plasma arc melting unit 10 and the induction skull melting unit 20 may be disposed in one chamber in this order, and thus the plasma arc melting (PAM) process and the induction skull melting ( ISM) process may be performed sequentially and continuously.
  • PAM plasma arc melting
  • ISM induction skull melting
  • the titanium ingot manufacturing apparatus 1 may be configured by sequentially disposing the plasma arc melting unit 10 and the induction skull melting unit 20, and metal scrap A plasma arc melting (PAM) process and an induction skull melting (ISM) process are sequentially and continuously performed through the silver titanium ingot manufacturing apparatus 1 to be cast into a metal ingot, thereby improving the meltability of metal scrap and The purity of the finally cast metal ingot can be increased.
  • PAM plasma arc melting
  • ISM induction skull melting
  • FIG. 2 is a flowchart illustrating a method for manufacturing a titanium ingot according to exemplary embodiments of the present invention.
  • a method for manufacturing a titanium ingot includes melting titanium scrap 100 with a plasma arc (S-1), melting the molten titanium scrap by an induction skull method It may include a step (S-2), and a step (S-3) of casting a titanium ingot with molten titanium sequentially through the plasma arc and the induction skull method.
  • the titanium scrap 100 may be melted into primary titanium molten metal 110 through a plasma arc melting step (S-1), and the primary titanium molten metal 110 is an induction skull. It may be re-melted into the secondary titanium molten metal 120 through the melting step (S-2). Thereafter, the secondary titanium molten metal 120 may be solidified and cast into a titanium ingot 150 .
  • FIG 3 is a view for explaining a step of melting titanium using the plasma arc melting unit 10 according to exemplary embodiments of the present invention.
  • the titanium scrap 100 is put into the plasma arc melting unit 10 (S11), and the titanium scrap 100 is driven by driving the plasma torch 15. ) into primary titanium molten metal 110 (S12), and flowing the primary titanium molten metal 110 on the cold hearth 13 to separate the inclusions 105 by precipitating them or vaporizing them into steam. (S13) may be included.
  • FIG 4 is a view for explaining a step of melting titanium using the induction skull melting unit 20 according to exemplary embodiments of the present invention.
  • the induction skull melting step (S-2) includes the step of inputting the primary titanium molten metal 110 into the induction skull melting unit 20 (S21) and driving the induction coil 25 to It may include melting the titanium molten metal 110 into the secondary titanium molten metal 120 (S22), and purifying the secondary titanium molten metal 120 on the cold crucible 23 (S23).
  • the plasma arc melting step (S-1) and the induction skull melting step (S-2) may be performed independently of each other, and the plasma arc melting step (S-1) and the induction skull melting step (S-2) may be performed continuously.
  • the method for manufacturing a titanium ingot according to the present invention is performed by independently and continuously applying two different melting processes to improve the meltability of titanium scrap 100 and minimize inclusions 105.
  • a process of removing impurities in the raw material using PAM can be applied first, and then, only pure molten metal molten metal from which low-density and high-density inclusions are removed can be used for ISM (Induction Skull Melting) Induction skull melting) may be charged into a cold crucible, and the purity of the finally manufactured metal ingot may be further improved by additionally remelting the pure molten metal.
  • PAM Pullasma Arc Melting
  • the concept of the present invention is not necessarily limited thereto, and the titanium ingot manufacturing apparatus and the titanium ingot manufacturing method according to exemplary embodiments of the present invention can be used in various technical fields other than the above-described technical fields, for example, titanium alloy ingots. It can be applied to the manufacturing method of.
  • titanium scrap 100 may be used as a titanium alloy scrap, and accordingly, the primary titanium molten metal 110 and the secondary titanium molten metal 120 are also 1 It may be referred to as a primary titanium alloy molten metal and a secondary titanium alloy molten metal.
  • the titanium scrap 100 is melted into a primary titanium molten metal 110 and a secondary titanium molten metal 120 through a plasma arc melting unit 10 and an induction skull melting unit 20. Melting may be performed through substantially the same or similar steps as the above-described titanium ingot manufacturing method, and additionally, the step of injecting alloy components into the primary titanium molten metal 110 or the secondary titanium molten metal 120 is further performed.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
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Abstract

Un appareil de fabrication d'un lingot de titane selon des modes de réalisation donnés à titre d'exemple de la présente invention peut comprendre : une unité de fusion à arc de plasma pour faire fondre des déchets métalliques avec un arc de plasma ; une unité de fusion à fond de poche refroidi par induction pour faire fondre le métal en fusion fondu par le plasma avec un courant induit ; et une unité de retrait de lingot pour retirer le lingot métallique qui est solidifié après avoir été fondu par le courant induit, l'unité de fusion à arc de plasma et l'unité de fusion à fond de poche refroidi par induction pouvant être disposées dans une chambre dans l'ordre indiqué.
PCT/KR2022/019755 2021-12-30 2022-12-06 Appareil de fabrication de lingot de titane et procédé de fabrication de lingot de titane l'utilisant WO2023128361A1 (fr)

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Application Number Priority Date Filing Date Title
EP22916507.1A EP4450184A1 (fr) 2021-12-30 2022-12-06 Appareil de fabrication de lingot de titane et procédé de fabrication de lingot de titane l'utilisant

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KR20210192425 2021-12-30
KR10-2021-0192425 2021-12-30
KR1020220025133A KR20230103809A (ko) 2021-12-30 2022-02-25 타이타늄 잉곳 제조 장치 및 이를 이용한 타이타늄 잉곳의 제조 방법
KR10-2022-0025133 2022-02-25

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JP2014217890A (ja) * 2013-05-02 2014-11-20 アールティーアイ・インターナショナル・メタルズ，インコーポレイテッド 連続鋳造鋳型を用いる金属インゴットにおいて気泡又はガスポケットを減らす方法及び装置
KR20170068057A (ko) * 2015-12-09 2017-06-19 한국생산기술연구원 타이타늄정련용해로 및 타이타늄정련방법
JP2018134675A (ja) * 2017-02-23 2018-08-30 株式会社神戸製鋼所 Ｔｉ−Ａｌ系合金の製造方法

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Publication number Priority date Publication date Assignee Title
JP2005508758A (ja) * 2001-11-16 2005-04-07 アーエルデー ヴァキューム テクノロジース アーゲー 合金インゴットを製造する方法
JP2013043999A (ja) * 2011-08-22 2013-03-04 Kobe Steel Ltd チタン鋳塊の製造方法
KR101370029B1 (ko) 2013-03-18 2014-03-05 한국생산기술연구원 플라즈마 수소이온에 의한 티타늄 스크랩의 정련 장치 및 그 방법
JP2014217890A (ja) * 2013-05-02 2014-11-20 アールティーアイ・インターナショナル・メタルズ，インコーポレイテッド 連続鋳造鋳型を用いる金属インゴットにおいて気泡又はガスポケットを減らす方法及び装置
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KR20170068057A (ko) * 2015-12-09 2017-06-19 한국생산기술연구원 타이타늄정련용해로 및 타이타늄정련방법
KR101751794B1 (ko) 2015-12-09 2017-06-29 한국생산기술연구원 타이타늄정련용해로 및 타이타늄정련방법
JP2018134675A (ja) * 2017-02-23 2018-08-30 株式会社神戸製鋼所 Ｔｉ−Ａｌ系合金の製造方法

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