SE457990B - DEVICE FOR MANUFACTURING AND MOVING OF MOLD STEEL - Google Patents

DEVICE FOR MANUFACTURING AND MOVING OF MOLD STEEL

Info

Publication number
SE457990B
SE457990B SE8601763A SE8601763A SE457990B SE 457990 B SE457990 B SE 457990B SE 8601763 A SE8601763 A SE 8601763A SE 8601763 A SE8601763 A SE 8601763A SE 457990 B SE457990 B SE 457990B
Authority
SE
Sweden
Prior art keywords
container
stirrer
melt
steel
stirrers
Prior art date
Application number
SE8601763A
Other languages
Swedish (sv)
Other versions
SE8601763L (en
SE8601763D0 (en
Inventor
K-E Berkestad
Original Assignee
Asea Ab
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 Asea Ab filed Critical Asea Ab
Priority to SE8601763A priority Critical patent/SE457990B/en
Publication of SE8601763D0 publication Critical patent/SE8601763D0/en
Priority to EP87902820A priority patent/EP0310604A1/en
Priority to JP62502424A priority patent/JPH01500526A/en
Priority to PCT/SE1987/000182 priority patent/WO1987006332A1/en
Priority to BR8707667A priority patent/BR8707667A/en
Publication of SE8601763L publication Critical patent/SE8601763L/en
Publication of SE457990B publication Critical patent/SE457990B/en

Links

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)

Description

457 990 _. 0 Vid en föredragen utföringsform gives omrörningen större kraft och/eller hastighet i stàlsmältebehållarens nedre delar än i de övre, varvid det ideala tillståndet vore högsta rotationshastighet vid stàlsmältebehålla- rens botten och lägst vid stålsmältans yta. 457 990 _. 0 In a preferred embodiment, the agitation is given greater force and / or speed in the lower parts of the steel melting tank than in the upper ones, whereby the ideal condition would be the highest rotational speed of steel smelting tanks. the bottom and lowest at the surface of the steel melt.

Stålsmältan kommer på olika höjdnivåer och under samtidig skiktförvridning att pressas från rotationscentrum och ut mot stalsmältebehàllarens väggar för att där, under samtidig rotation. pressas vidare upp mot stålsmältans yta för att därefter, från alla riktningar, flyta in mot rotationscentrum och där sugas ner för att på nytt på olika höjdnivàer pressas ut mot stål- smältebehâllarens väggar. Vid behov kan även t ex ett slagglager brytas sönder och översköljas av stålsmältan genom att minska den övre induktiva omrörarens mothàllande effekt och/eller öka den undre induktiva omrörarens drivande effekt, viket leder till en större grop på stålsmältans yta och därmed möjlighet till översköljning och sönderbrytning.The steel melt comes at different height levels and during simultaneous layer distortion to be pressed from the center of rotation and out against the walls of the steel melting tank to there, during simultaneous rotation. pressed further up against the steel melt surface to then, from all directions, flow in towards the center of rotation and where it is sucked down to be pressed out again at different height levels against steel the walls of the melting container. If necessary, a slag layer, for example, can also be broken broken and flooded by the steel melt by reducing the upper inductive the restraining effect of the stirrer and / or increase the lower inductive stirrer driving effect, the fold leads to a larger pit on the steel melt surface and thus the possibility of flooding and breaking.

Man kan mata omrörarna med olika frekvens, exempelvis en lägre för den övre omröraren, som därvid får längre inträngningsdjup i denna del av smältan. Frekvensen kan vara alltifrån mycket låga värden upp till nät- frekvens (0,1-60 Hz).You can feed the stirrers with different frequencies, for example a lower one for it the upper stirrer, which thereby has a longer penetration depth in this part of the melt. The frequency can range from very low values up to network frequency (0.1-60 Hz).

Uppfinningen är närmare exemplifierad i bifogade figur, som visar en skänk med tvà flerfasiga, elektromagnetiska, horisontella omrörare.The invention is further exemplified in the accompanying figure, which shows a sideboard with two multiphase, electromagnetic, horizontal stirrers.

I figuren visas en stàlsmälteskänk 1 med en övre 2 och en nedre 3 om- rörare. Dessa ger inbördes huvudsakligen motsatt vandringsfält. Eventuellt ges även den nedre omröraren 3 större effekt så att magnetfältet från denna blir kraftigare än fältet fran den övre omröraren. Man kan även omröra med större hastighet i de nedre delarna än i de övre.The figure shows a steel melting bar 1 with an upper 2 and a lower 3 stirrer. These provide with each other mainly opposite hiking fields. Possibly the lower stirrer 3 is also given greater power so that the magnetic field from this becomes stronger than the field from the upper stirrer. You can too stir at a higher speed in the lower parts than in the upper ones.

Man kan därvid ha lägre frekvens i den övre för att åstadkomma detta, men man får härvid större inträngningsdjup för fältet från den med lägre frekvens matade omröraren.You can thereby having a lower frequency in the upper to accomplish this, but one gets in this case greater penetration depth for the field from the one with a lower frequency fed the stirrer.

Man kan givetvis även mata omrörarna med samma frekvens, men med större effekt i den andra.You can of course also feed the stirrers with the same frequency, but with larger ones effect in the other.

I figuren visas två grova pilar 2 och 3, vilka symboliskt visar de inbördes motsatta omrörningsriktningarna eller med 2 det övre på stål-The figure shows two rough arrows 2 and 3, which symbolically show them mutually opposite agitation directions or with 2 the top of the steel

Claims (4)

3 457 990 smältan verkande magnetfältet och med 3 det undre på stålsmältan verkande magnetfältet. Pilarna 4 i mittplanet illustrerar de uppåt avtagande rotationshastig- heterna och de streckade pilarna 5 visar de sammansatta smälterörelserna. Man finner att smältans olika delar tvingas upp till ytan under samtidig blandning. Anordningen enligt uppfinningen kan varieras på många andra sätt inom ramen för nedanstående patentkrav. PATENTKRAV3 457 990 melt acting on the magnetic field and with 3 the lower magnetic field acting on the steel melt. The arrows 4 in the center plane illustrate the upwardly decreasing rotational speeds and the dashed arrows 5 show the composite melting movements. It is found that the different parts of the melt are forced up to the surface during simultaneous mixing. The device according to the invention can be varied in many other ways within the scope of the following claims. PATENT REQUIREMENTS 1. Anordning för tillverkning och omröring av smält stål i en behållare, k ä n n e t e c k n a d därav, att utanför, längs behàllarens sidovägg (-väggar) är anordnade en första (2) och en andra (3) elektromagnetisk, induktiv omrörare för horisontell (runt behållarens (l) längdaxel) om- röring, belägna på inbördes olika nivåer över behållarens botten, den första (2) belägen omedelbart över den andra (3), varvid den första om- röraren (2) är anordnad för en omröringsriktning motsatt den andras (3).Device for the manufacture and agitation of molten steel in a container, characterized in that a first (2) and a second (3) electromagnetic, inductive stirrer for horizontal (round) are arranged outside, along the side wall (s) of the container longitudinal axis of the container (1), agitated, located at mutually different levels above the bottom of the container, the first (2) located immediately above the second (3), the first agitator (2) being arranged for a direction of agitation opposite to the other (3). 2. Anordning enligt patentkrav 1, k ä n n e t e c k n a d därav, att omrörningskraften och/eller -hastigheten för den andra, nedre omröraren (3) är anordnad att vara större än för den första (2).Device according to claim 1, characterized in that the stirring force and / or the speed of the second, lower stirrer (3) is arranged to be greater than that of the first (2). 3. Anordning enligt patentkrav 1 och eventuellt 2, k ä n n e t e c k - n a d därav, att fältstyrkan från omrörarna (2, 3) är anordnad variabel och/eller att omröringsriktningarna är reversibla.Device according to claim 1 and possibly 2, characterized in that the field strength from the stirrers (2, 3) is arranged variable and / or that the stirring directions are reversible. 4. Anordning enligt något av föregående patentkrav, k ä n n e t e c k - n a d därav, att matningsfrekvensen till en av omrörarna (2) är olika matningsfrekvensen till den andra omröraren (3).Device according to one of the preceding claims, characterized in that the feed frequency of one of the stirrers (2) is different from the feed frequency of the other stirrer (3).
SE8601763A 1986-04-16 1986-04-16 DEVICE FOR MANUFACTURING AND MOVING OF MOLD STEEL SE457990B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8601763A SE457990B (en) 1986-04-16 1986-04-16 DEVICE FOR MANUFACTURING AND MOVING OF MOLD STEEL
EP87902820A EP0310604A1 (en) 1986-04-16 1987-04-10 Arrangement in steel manufacturing by means of inductive stirring
JP62502424A JPH01500526A (en) 1986-04-16 1987-04-10 Equipment for steel making using induction stirring
PCT/SE1987/000182 WO1987006332A1 (en) 1986-04-16 1987-04-10 Arrangement in steel manufacturing by means of inductive stirring
BR8707667A BR8707667A (en) 1986-04-16 1987-04-10 ARRANGEMENT IN STEEL MANUFACTURING THROUGH INDUCTIVE AGITATION

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
SE8601763D0 SE8601763D0 (en) 1986-04-16
SE8601763L SE8601763L (en) 1987-10-17
SE457990B true SE457990B (en) 1989-02-13

Family

ID=20364237

Family Applications (1)

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

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

Family Cites Families (7)

* 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
US3314670A (en) * 1963-11-15 1967-04-18 Inductotherm Corp Molten metal stirring apparatus
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
DE1549673A1 (en) * 1966-12-21 1971-04-08 Almex Ab Character reading and transmission device
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

Also Published As

Publication number Publication date
JPH01500526A (en) 1989-02-23
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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