JPH01500526A - Equipment for steel making using induction stirring - Google Patents

Equipment for steel making using induction stirring

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Publication number
JPH01500526A
JPH01500526A JP62502424A JP50242487A JPH01500526A JP H01500526 A JPH01500526 A JP H01500526A JP 62502424 A JP62502424 A JP 62502424A JP 50242487 A JP50242487 A JP 50242487A JP H01500526 A JPH01500526 A JP H01500526A
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JP
Japan
Prior art keywords
stirring
molten steel
induction stirring
steel
stirring device
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Pending
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JP62502424A
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Japanese (ja)
Inventor
ベルケスタッド，カール　‐　エリック
Original Assignee
アセア　アクチーボラグ
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Application filed by アセア　アクチーボラグ filed Critical アセア　アクチーボラグ
Publication of JPH01500526A publication Critical patent/JPH01500526A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D27/00—Stirring devices for molten material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
    • B01F33/451—Magnetic mixers; Mixers with magnetically driven stirrers wherein the mixture is directly exposed to an electromagnetic field without use of a stirrer, e.g. for material comprising ferromagnetic particles or for molten metal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/34—Arrangements for circulation of melts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/45—Mixing in metallurgical processes of ferrous or non-ferrous materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0039—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising magnetic means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/02—Stirring of melted material in melting furnaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Continuous Casting (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。 (57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 誘導撹拌による製鋼用装置 本発明は溶鋼の誘導撹拌によって溶鋼用容器内で製鋼を行う装置に係る。[Detailed description of the invention] Steel manufacturing equipment using induction stirring The present invention relates to an apparatus for manufacturing steel in a container for molten steel by induction stirring of molten steel.

高ｌｌ１１ａ４の製造においては、種々の鋼の品質は、同時に溶鋼の撹拌と混合 とを行ないつつ、種々の冶金学的手段を必要とする。溶鋼容器の外側に配置され るいわゆる誘導撹拌装置は、溶鋼を回転させながら該誘導撹拌装置によって生じ る磁界の作用をそれに及ぼし得ることは久しく知られている。既知の実用機構は １個又は複数個の誘導撹拌装置を含むが、該装置は溶鋼を混合させるよりはむし ろ主として一体的に溶鋼を回転させる。冶金学的透過はほとんどの場合溶鋼の表 面において生じるから、混合の改善を達成することに加えて、溶鋼の種々の部分 が、同時に混合される間に、表面まで押上げられて可能な限り大きい区域までそ こで露出されることが望ましい。溶鋼のそのような運動パターンはより短い処理 時間でより均一の鋼品質を提供し、ついでその結果として生産コストが直接的に 削減される。溶鋼表面において取られる手段の例として、加熱、真空下の脱水素 、石灰による脱硫、酸素による炭素燃焼、及び合金化物質の供給が挙げられる。In the production of high-grade steel 11a4, the quality of various steels is determined by the stirring and mixing of molten steel at the same time. However, various metallurgical means are required. placed outside the molten steel container The so-called induction stirring device uses the induction stirring device to rotate the molten steel. It has been known for a long time that magnetic fields can be exerted on it. The known practical mechanism is including one or more induction stirring devices, which devices do not mix the molten steel; Rotates the molten steel integrally as a filter. Metallurgical permeation is mostly at the surface of molten steel. In addition to achieving improved mixing since it occurs on the surface, various parts of the molten steel is pushed up to the surface and over the largest possible area while simultaneously being mixed. It is desirable to be exposed here. Such a movement pattern of molten steel allows for shorter processing providing more uniform steel quality in time, which in turn directly reduces production costs. reduced. Examples of measures taken on the surface of molten steel include heating, dehydrogenation under vacuum , desulfurization with lime, carbon combustion with oxygen, and supply of alloying substances.

本発明は上に挙げた諸問題並びにそれらと関連するその他諸問題に解決を提供す ることを目的とし、そして誘導撹拌が溶鋼のそれぞれ異レベルに位置される少な くとも２個の実質的に水平方向に作用する誘導撹拌装置により生じるようにされ 、かようにして一方の撹拌装置の撹拌方向が他方の撹拌装置のそれと実質的に反 対であることを特徴とする。The present invention provides a solution to the problems listed above, as well as other problems related to them. The purpose of the induction stirring is to produced by at least two substantially horizontally acting induction stirring devices. , so that the stirring direction of one stirring device is substantially opposite to that of the other stirring device. It is characterized by being a pair.

本発明によれば、溶鋼の種々の部分が、同時に混合されつつ、その表面において 可能な限り大ぎい区域まで露出されるように表面へ押上げられるような撹拌が達 成される。これは、溶鋼の下部分において作用しそしてそこでは実質的に水平面 において溶鋼を成る方向に回転させる少なくとも一つの磁界を生じさせるＭｎ撹 拌と、前記溶鋼の上部分において作用しそしてそこでは実質的に反対の方向に前 記溶鋼を駆動する少なくとも一つの別の磁界を生じさせる１１３撹拌とによって 解決された。According to the present invention, various parts of molten steel are mixed simultaneously and at the surface thereof. Agitation is achieved so that it is pushed up to the surface to expose the largest possible area. will be accomplished. This acts in the lower part of the molten steel and there it is a substantially horizontal plane. a Mn stirrer that produces at least one magnetic field that rotates the molten steel in a direction; stirring and acting in the upper part of said molten steel and there forwarding in substantially opposite directions; 113 stirring and producing at least one further magnetic field driving the molten steel. Resolved.

本発明の一好適実施例において、前記撹拌は溶鋼容器の下部分においては上部分 におけるそれよりも大きい力及び／または速度を付与される。従って理想的状態 は、溶鋼容器の底において最大回転速度を有しそして溶鋼の表面において最低回 転速度を有することであろう。In a preferred embodiment of the invention, the stirring is performed in the lower part of the molten steel vessel and in the upper part. is applied with a force and/or velocity greater than that at . Therefore the ideal state has a maximum rotational speed at the bottom of the molten steel vessel and a minimum rotational speed at the surface of the molten steel. It will have a rolling speed.

溶鋼の種々のレベルにおいて、そして同時に溶鋼の複数の層が互いに捩られる間 に、該溶鋼は回転の中心から溶鋼容器の壁へ向かって外方へ押圧されそしてそこ で、同時に回転される間に、ざらに溶鋼の表面へ向かって押上げられ、そして次 に、全方向から、回転の中心へ向かつて内方へ浮動し、そしてそこでＦ方へ吸い 込まれ、そして再び、種々のレベルにおいて、溶鋼容器の壁へ向かって外方へ押 圧される。また、必要とされる場合は、スラッグ層は上下撹拌装置の反対運動効 果を減じること及び／または下誘導撹拌装置の駆動効果を増すことによって破砕 されて溶鋼と一緒に飛散させられる。上下撹拌装置のそのような操作は溶鋼の表 面の低■を生じさせ、かくして飛散及び破砕を可能にする。At different levels of molten steel and while multiple layers of molten steel are twisted together at the same time First, the molten steel is forced outward from the center of rotation towards the wall of the molten steel vessel and there While being rotated at the same time, it is roughly pushed up towards the surface of the molten steel, and then Then, from all directions, it floats inward toward the center of rotation, and there it sucks in the F direction. and again, at various levels, are pushed outward towards the walls of the molten steel vessel. be pressured. In addition, if required, the slug layer can be crushing by reducing the amount of fruit and/or increasing the driving effect of the lower induction stirring device. It is scattered along with the molten steel. Such operation of the vertical stirring device This creates a low surface area, thus allowing splashing and fragmentation.

複数の撹拌装置は種々の周波数を以て作動され得る。Multiple stirring devices can be operated with different frequencies.

例えば、上撹拌装置には比較的低い周波数が供給され得、従って該装置は溶融物 の当該部分において比較的長い透過を達成する。周波数節回は極めて低い値から 本線周波数（０１−６０Ｈｚ）まで可能である。For example, a top stirring device may be supplied with a relatively low frequency so that it A relatively long transmission is achieved in that part of the . Frequency tuning starts from extremely low values. It is possible to operate up to the main line frequency (01-60Hz).

本発明は添付図面を参照してさらに一層詳細に実施例によって説明されるであろ う。添付図面において、第１図は２多段電磁水平撹拌装置を有する取鍋を示し、 そして 第２図は前記取鍋内の流れの形状を示す。The invention will be explained in further detail by way of example with reference to the accompanying drawings. cormorant. In the accompanying drawings, Figure 1 shows a ladle with a two-stage electromagnetic horizontal stirring device; and FIG. 2 shows the shape of the flow within the ladle.

第１図は溶鋼のための取鍋１であって上撹拌装置２ど下撹拌装＠３とを有するも のを示す。これら撹拌装置は互いに実質的に反対の移動磁界を提供する（２１及 び２２参照）。おそらく、前記下撹拌装置３は、また、より大きい電力を与えら れ、従ってこの撹拌装置からの磁界は前記上撹拌装置２からの磁界よりも強力で ある。また、上部分におけるよりも大きい速度を以てド部分において撹拌するこ とも可能である。これを達成するために、前記上撹拌装置２は恐らくより低い周 波数を有するであろう。しかし、この結果として、より低い周波数を供給される 撹拌装置からの磁界の透過深度はより大きくなるであろう。Figure 1 shows a ladle 1 for molten steel, which has an upper stirring device 2 and a lower stirring device @3. It shows. These stirring devices provide moving magnetic fields that are substantially opposite to each other (21 and and 22). Presumably, the lower stirring device 3 is also given more power. Therefore, the magnetic field from this stirring device is stronger than the magnetic field from the upper stirring device 2. be. It is also possible to stir in the lower part with a higher speed than in the upper part. Both are possible. To achieve this, the upper stirrer 2 is likely to have a lower periphery. will have a wave number. However, as a result of this, a lower frequency is supplied The penetration depth of the magnetic field from the stirring device will be greater.

言うまでもなく、また、前記両撹拌装置に同一の周波数を供給し、しかし片方に はより強い電力を与えることも可能である。Needless to say, it is also possible to supply the same frequency to both stirring devices, but to one It is also possible to provide stronger power.

第２図は二つの太い矢印２及び３を示し、それらは互いに反対の撹拌方向を象徴 的に示している。即ち、矢印２は溶鋼に作用する上限界を示し、そして矢印３は 溶鋼に作用する上限界を示す。Figure 2 shows two thick arrows 2 and 3, which symbolize mutually opposite stirring directions. It shows. That is, arrow 2 indicates the upper limit acting on molten steel, and arrow 3 indicates Indicates the upper limit that acts on molten steel.

第２図の中央の矢印４は上方向に次第に小さくなる回転速度を示し、そして小矢 印５は溶融物の重畳運動を示す。Arrow 4 in the center of Fig. 2 indicates a rotation speed that gradually decreases in the upward direction, and a small arrow Mark 5 shows the superimposed movement of the melt.

かくして溶融物のさまざまの部分が表面まで押上げられると同時に混合されるこ とは明らかである。Thus, different parts of the melt are forced up to the surface and mixed at the same time. It is clear.

本発明に基づく機構は別添請求の範囲内で多くの方式を以て修正され得る。The arrangement according to the invention can be modified in many ways within the scope of the appended claims.

ＦＩ６．７ 手続補正書 １．事件の表示 ＰＣＴ　／　ＳＥ　８７　／　００１８２２、発明の名称 誘導攪拌による製鋼用装置 ３、補正をする者 事件との関係　特許出願人 名称　アセア　アクチーポラグ ４、代理人 居　所　〒１００東京都千代田区大手町二丁目２番１号新大手町ビルヂング３３ １ ５、補正の対象 ７、添付書類の目録　＾へ 同時に出願審査請求書を提出してあります。FI6.7 Procedural amendment 1. Display of incidents PCT / SE 87 / 001822, title of the invention Equipment for steel making using induction stirring 3. Person who makes corrections Relationship to the incident: Patent applicant Name Asea Actipo Rag 4. Agent Address: Shin-Otemachi Building 33, 2-2-1 Otemachi, Chiyoda-ku, Tokyo 100 1 5. Subject of correction 7. Go to list of attached documents ^ At the same time, a request for examination of the application has been submitted.

「請求の範囲 溶鋼の誘導攪拌によって溶鋼用容器内で製鋼を行う装置において、前記溶鋼に作 用し移動させる磁界を備え、前記誘導攪拌が、前記溶鋼の下部分に作用し実質的 に水平な面のある方向に前記溶鋼を移動する少なくとも一つの磁界３　と、前記 溶鋼の上部分に作用し実質的に反対方向に前記溶鋼を移動する少なくとももう一 つ磁界２　とを生り、にとを特徴とする装置。ｊ 閑静調査報告 １１１１・・１１ｍｌｌｌｍ１−１Ａｅ１−１−＝ａ１．ＰＣＴ／５Ｅ８７１０ ０！８２"The scope of the claims In a device that produces steel in a molten steel container by induction stirring of molten steel, the molten steel is The induction stirring acts on the lower part of the molten steel and substantially moves the molten steel. at least one magnetic field 3 that moves the molten steel in a direction parallel to the surface; at least another portion acting on the upper portion of the molten steel and moving said molten steel in a substantially opposite direction; A device that generates a magnetic field 2 and is characterized by a crab. j Quiet investigation report 1111...11mlllm1-1Ae1-1-=a1. PCT/5E8710 0!82

Claims (4)

【特許請求の範囲】[Claims] １．溶鋼の誘導撹拌によつて溶鋼用容器内で製鋼を行う装置において、誘導撹拌 が溶鋼のそれぞれ異なるレベルに位置される少なくとも２個の実質的に水平方向 に作用する誘導撹拌装置によつて達成されるようにされ、前記撹拌装置の一つの ための撹拌方向が他方の撹拌装置のためのそれと実質的に反対であることを特徴 とする装置。1. In a device that produces steel in a container for molten steel by induction stirring of molten steel, at least two substantially horizontal planes, each of which is located at a different level of the molten steel. of one of said stirring devices. characterized in that the stirring direction for the stirring device is substantially opposite to that for the other stirring device. A device that does this. ２．請求の範囲第１項に従う装置にむいて、下撹拌装置のための撹拌力及び／ま たは撹拌速度が上撹拌装置のためのそれより大きいことを特徴とする装置。2. For the device according to claim 1, the stirring power and/or or a device characterized in that the stirring speed is greater than that for the upper stirring device. ３．請求の範囲第１項及び恐らく第２項に従う装置において、それぞれの撹拌装 置からの磁界の力が様々に変更され得ること及び／または撹拌方向が逆転され得 ることを特徴とする装置。3. Apparatus according to claim 1 and possibly claim 2, in which each stirring device The magnetic field force from the station can be varied and/or the stirring direction can be reversed. A device characterized by: ４．請求の範囲第１項から第３項の何れか一つの項に従う装置において、前記撹 拌装置の一つのための周波数が他方の撹拌装置のためのそれらより低いことを特 徴とする装置。4. An apparatus according to any one of claims 1 to 3, wherein the stirring Specializing in that the frequencies for one of the stirring devices are lower than those for the other stirring device. A device used as a sign.
JP62502424A 1986-04-16 1987-04-10 Equipment for steel making using induction stirring Pending JPH01500526A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8601763-9 1986-04-16
SE8601763A SE457990B (en) 1986-04-16 1986-04-16 DEVICE FOR MANUFACTURING AND MOVING OF MOLD STEEL

Publications (1)

Publication Number Publication Date
JPH01500526A true JPH01500526A (en) 1989-02-23

Family

ID=20364237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62502424A Pending JPH01500526A (en) 1986-04-16 1987-04-10 Equipment for steel making using induction stirring

Country Status (5)

Country Link
EP (1) EP0310604A1 (en)
JP (1) JPH01500526A (en)
BR (1) BR8707667A (en)
SE (1) SE457990B (en)
WO (1) WO1987006332A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2840821B1 (en) * 2002-06-13 2005-03-04 Commissariat Energie Atomique ELECTROMAGNETIC DEVICE FOR FUSION AND INTERFACIAL AGITATION OF DIPHASIC SYSTEMS, IN PARTICULAR FOR THE ACCELERATION OF METALLURGIC OR PYROCHEMICAL PROCESSES

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314670A (en) * 1963-11-15 1967-04-18 Inductotherm Corp Molten metal stirring apparatus
US3478156A (en) * 1966-12-21 1969-11-11 Ajax Magnethermic Corp Polyphase stirring of molten metal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1822539A (en) * 1929-03-09 1931-09-08 Ajax Electrothermic Corp Induction electric furnace
US1943802A (en) * 1930-03-18 1934-01-16 Ajax Electrothermic Corp Electric induction furnace
DE1533081B1 (en) * 1966-02-15 1971-01-21 Leybold Heraeus Gmbh & Co Kg Coreless induction furnace for melting and stirring metals and procedures for operating this furnace
DE2350090A1 (en) * 1973-10-05 1975-04-10 Bbc Brown Boveri & Cie Crucible electrical induction furnace - has a wound through coil with tappings, whose sections can be connected to a three-phase or single-phase supply
JPS52103729A (en) * 1976-02-26 1977-08-31 Daido Steel Co Ltd Plasma induction heating method and furnace

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314670A (en) * 1963-11-15 1967-04-18 Inductotherm Corp Molten metal stirring apparatus
US3478156A (en) * 1966-12-21 1969-11-11 Ajax Magnethermic Corp Polyphase stirring of molten metal

Also Published As

Publication number Publication date
SE457990B (en) 1989-02-13
WO1987006332A1 (en) 1987-10-22
BR8707667A (en) 1989-08-15
SE8601763L (en) 1987-10-17
SE8601763D0 (en) 1986-04-16
EP0310604A1 (en) 1989-04-12

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