US3331680A - Method and apparatus for the addition of treating agents in metal casting - Google Patents

Method and apparatus for the addition of treating agents in metal casting Download PDF

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Publication number
US3331680A
US3331680A US349256A US34925664A US3331680A US 3331680 A US3331680 A US 3331680A US 349256 A US349256 A US 349256A US 34925664 A US34925664 A US 34925664A US 3331680 A US3331680 A US 3331680A
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US
United States
Prior art keywords
wire
molten metal
stream
continuous casting
gas
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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.)
Expired - Lifetime
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US349256A
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English (en)
Inventor
Leupold Richard
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SMS Concast AG
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Concast AG
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Publication date
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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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/108—Feeding additives, powders, or the like
    • 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
    • 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
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • C21C7/0043—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material into the falling stream of 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
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
    • 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

Definitions

  • addition agents for example, inoculants, alloying elements and deoxidizers
  • two problems predominate; one, control of the exact dosaging of the addition agents; two, ensuring the uniform distribution of the addition agents or their reaction products in the casting.
  • a precisely dosaged quantity of aluminum must be added to the melt.
  • the aluminum is, in many cases, added to the molten steel in the casting vessel, for example, the ladle or pouring basin.
  • the quantity added is, in general, limited to a maximum of 300 grams per ton when casting smaller billets. Larger quantities of aluminum additions caused both blockage of the ladle nozzles and impairment of the surface quality of the casting. Material having a poor cast surface must be subjected to a costly surface treatment before further use.
  • the object of the present invention is to avoid these disadvantages and to provide an improved method and apparatus to attain a dependable uniform addition or reaction agent in a desired quantity and the uniform distribution of these reaction agents or their reaction products in the casting.
  • the method of this invention contemplates surrounding the wire, whose cross section may have different geometrical shapes by a gas jacket of flowing gas at least in the vicinity of the molten metal.
  • Thisflowing gas forms around the wire a gas jacket which effects a cooling of the Wire and a partial screening off of the heat.
  • Softening of the wire is avoided and the wire can be introduced into the liquid metal at the desired position and at a predetermined rate of feed to give precise dosages and desired distribution of the reaction products in the casting.
  • the surface of the melt between a casting vessel and the surface of the bath is protected from oxidation by the flowing gas.
  • At least one feed device for the gas should be associated with the feed device for the Wire.
  • the nozzles forming the feed device for the gas should be arranged around a nozzle from which the wire emerges.
  • a protective gas nozzle has in its inside an opening for the feeding of the wire. This arrangement makes possible in a simple manner a dependable jacketing of the Wire with gas. The gas emerging from the nozzle in this case simultaneously cools the feed nozzles.
  • the feed devices are cooled preferably by the flowing gas. These devices make it possible to arrange the wire very close to the molten metal without being damaged by the action of the heat or the reaction agent in them being caused to melt. The accuracy of the local introduction of the wire into the casting jet is thereby further improved.
  • FIG. 1 is a partially sectioned, elevation view of a continuous casting arrangement using the present invention
  • FIG. 2 is a partially sectioned, elevation view of a continuous casting plant using the present invention and showing a modified mounting arrangement
  • FIG. 3 is a section through a gas-cooled nozzle
  • FIG. 4 is a section through a water-cooled nozzle of a supply head.
  • FIG. 1 there is shown a continuous casting plant using the present invention in which wire 1 is Withdrawn from storage means such as a wire roll by feeding means such as feed rollers 2 clamped on the Wire and is fed through a guide such as a tube 3 to a casting jet 4.
  • the rollers 2 are driven via a gearing 5 from a motor 6, the speed of which can be adjusted with infinite variation. By this infinitely variable control, there is possible an infinitely variable dosaging of the quantity added.
  • the rollers 2, the gearing 5 and motor 6 form a single unit which is arranged on a pouring platform 7.
  • the steel flows from a ladle 8 via a pouring vessel 9 into a mold As gas for the production of the protective jacket 15,
  • nonoxidizing gas for example, inert or reducing gas.
  • This gas emerges together with the wire 1 through a nozzle 13 and cools the said wire as well as the pipe. This makes it possible to establish a small distance between the end 13 of the pipe and the casting jet 4, and thereby a guiding of the wire close to the casting jet.
  • the wire enters the pipe 3.
  • a seal is provided which prevents the emergence from the pipe 3 of the gas which enters through the connection 12.
  • the wire may be aluminum wire as, for example, in the production of rimmed steel.
  • the wire addition may comprise other materials, such as titanium, boron, aluminum, magnesium, depending on the application intended.
  • the inert or reducing gas may, for example, be propane, butane, acetylene or argon.
  • the gas prevents atmospheric oxygen from arriving at the place of introduction of the wire 1 into the casting jet-4 whereby oxidation of the melting aluminum is prevented.
  • emerging gas distributes itself in addition over the surface of the bath and between the latter and the pouring vessel and prevents the admission of atmospheric oxygen to the melt.
  • an additional feeding of protective gas by known devices may be necessary in order to maintain a suflicient gas protection over the surface of the bath.
  • the wire 1 is fed via a tube 20 to a supply head 21 arranged displaceably on the mold 10.
  • This supply head can, for example, be formedin accordance with the system in the same manner as a cutting torch in which the wire is fed in the gas-oxygen channel and the gas is fed in the fuel-oxygen line.
  • the supply head 21 has a nozzle 22. This nozzle is described in further detail in FIG. 3.
  • a flexible line 23 provides the supply head 21 with the gasnecessary for the cooling.
  • plurality'of feed devices might also be provided.
  • FIG. 3 shows the supply head 22 in which a wire 41 emerges from an opening 42 which is surrounded by a plurality of bore holes 43. These bore holes 43 arearranged concentric to the opening 42 and communicate with an annular channel 44. Through these bore holes 43,
  • the gas flows for the cooling of the wire 41.
  • the wire 41 is surrounded by a feed line 45 which is connected with the hose 2!).
  • the annular channel 44 is connected with the gas line 23.
  • FIG. 4 shows a section through the nozzle of another supply head.
  • 30 is a tube for feeding a wire 31 while a feed tube 32 for the gas is provided.
  • This gas flows through a correspondingly developed opening 33 the form of a wire, feeding said wire into said molten metal stream at a location between said pouring vessel and said continuous casting mold, and blowing a jacket of protective gas around said wire to protect saidwire against heatinduced distortion of the wire as said wire is fed towards said molten metal stream, thereby to control the entry of said wire into said stream and the rate of entry of said wire into said stream, wherein said wire is melted .and 'comingled with the molten metal being poured.
  • Apparatus for introducing additional metallic agents in the form of a wire to'the metal being cast in a'continuous casting process in which molten metal is poured from a pouring vessel into an open-ended continuous casting mold which solidifies the periphery of the metal to define the continuously cast strand which comprises storage means for said wire, a guide extending from said storage means toward said molten metal stream at a position between said pouring vessel and said continuous casting mold, a nozzle assembly positioned at the end of said .guide nearest said molten metal stream, means for feeding said Wire through said guide and nozzle to advance said wire into said molten metal said nozzle assembly to blow inert gas around said wire from the tube 32 and forms a protective jacket 34 in which the wire 31 is fed to the casting jet.
  • the Wire is cooled and partially screened from the heat of the liquid metal.
  • the lines 30, 32 are surrounded by to cool said wire and, to prevent said wire from heatinduced deformations asit is advanced towards said molten met-a1 stream, thereby to permit accurate control of the rate and amount of material added to said molten metal stream.
  • said nozzle assembly comprises a Wire tube, a gas tube, and a surrounding pipe, said wire tube and said gas tube being positioned in side-by-side relationship and being mounted Within said surrounding tube to enable flow of cooling water between said surrounding tube and said wire and gas tubes.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
US349256A 1963-07-25 1964-03-04 Method and apparatus for the addition of treating agents in metal casting Expired - Lifetime US3331680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH926663A CH403170A (de) 1963-07-25 1963-07-25 Verfahren zum Einbringen von Reaktionsmitteln

Publications (1)

Publication Number Publication Date
US3331680A true US3331680A (en) 1967-07-18

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ID=4350121

Family Applications (1)

Application Number Title Priority Date Filing Date
US349256A Expired - Lifetime US3331680A (en) 1963-07-25 1964-03-04 Method and apparatus for the addition of treating agents in metal casting

Country Status (8)

Country Link
US (1) US3331680A (de)
BE (1) BE650985A (de)
CH (1) CH403170A (de)
DE (1) DE1252854B (de)
FI (1) FI44684C (de)
FR (1) FR1403347A (de)
GB (1) GB1068912A (de)
SE (1) SE312409B (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634075A (en) * 1969-01-15 1972-01-11 Kawecki Berylco Ind Introducing a grain refining or alloying agent into molten metals and alloys
US3726331A (en) * 1971-04-28 1973-04-10 R Bunting Continuous casting process
US3766961A (en) * 1969-09-04 1973-10-23 Roblin Industries Apparatus for continuously casting steel
US3771584A (en) * 1971-01-08 1973-11-13 Roblin Industries Method for continuously casting steel billet strands to minimize the porosity and chemical segregation along the center line of the strand
US3871875A (en) * 1972-12-15 1975-03-18 Yodogawa Steel Works Flux composition and a centrifugal casting process using the same
US4134196A (en) * 1975-07-25 1979-01-16 Hitachi Cable Ltd. Method of production of a wire-shaped composite addition material
US4233065A (en) * 1978-12-08 1980-11-11 Foote Mineral Company Effective boron alloying additive for continuous casting fine grain boron steels
US4235632A (en) * 1979-04-04 1980-11-25 Mobay Chemical Corporation Particulate slagging composition for the extended optimum continuous casting of steel
US4484731A (en) * 1983-05-12 1984-11-27 Hirotoshi Taniguchi Method and apparatus for continuously treating molten metal
US4512800A (en) * 1983-08-12 1985-04-23 Pfizer Inc. Wire injection apparatus
DE3707322C1 (en) * 1987-03-07 1988-06-16 Odermath Stahlwerkstechnik Wire injection machine
DE3807281A1 (de) * 1988-03-05 1989-09-14 Odermath Stahlwerkstechnik Drahtinjektionsmaschine
EP0378744A1 (de) * 1989-01-13 1990-07-25 Inland Steel Company Verfahren und Vorrichtung zur Zugabe von Granalien zu geschmolzenem Stahl
US4986847A (en) * 1989-09-20 1991-01-22 Fuchs Systemtechnik Gmbh Process and apparatus for at least temporarily simultaneously subjecting a molten metal to the action of a gas and fine-grain solid materials
US5377960A (en) * 1993-03-01 1995-01-03 Berry Metal Company Oxygen/carbon blowing lance assembly
CN109848382A (zh) * 2019-01-30 2019-06-07 凌源钢铁股份有限公司 一种炼钢工艺中钛合金化的方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1233278A (de) * 1968-10-23 1971-05-26
US3831660A (en) * 1971-06-25 1974-08-27 Nat Steel Corp Apparatus for improving continuously cast strands
GB2142262B (en) * 1983-07-01 1987-01-21 William G Wilson Continuous casting of steels
CN113145811B (zh) * 2021-04-16 2022-10-18 鞍钢股份有限公司 一种高铝钢调铝装置及使用方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2577837A (en) * 1949-10-29 1951-12-11 Lothar R Zifferer Introduction of magnesium into molten iron
US2882571A (en) * 1956-10-08 1959-04-21 Koppers Co Inc Method of casting metals
US2997386A (en) * 1958-06-27 1961-08-22 Feichtinger Heinrich Process and apparatus for treating metal melts
US3137753A (en) * 1959-06-30 1964-06-16 Fischer Ag Georg Device for treating metallic melts

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE493231A (de) *
US1968917A (en) * 1933-06-30 1934-08-07 Vassily V Soldatoff Process of making steel
CH233415A (de) * 1936-07-30 1944-07-31 Junghans Siegfried Verfahren zur Herstellung von Strangguss und Vorrichtung zur Durchführung des Verfahrens.
DE840427C (de) * 1944-06-17 1952-06-09 Wieland Werke Ag Vorrichtung zur Verhinderung der Oxydation des Giesskopfes beim Giessen metallischer Werkstoffe, insbesondere beim Stranggiessen
AT179025B (de) * 1951-11-16 1954-07-10 Boehler & Co Ag Geb Verfahren zur Kornverfeinerung beim kontinuierlichen oder diskontinuierlichen Gießen von hochschmelzenden Metallen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2577837A (en) * 1949-10-29 1951-12-11 Lothar R Zifferer Introduction of magnesium into molten iron
US2882571A (en) * 1956-10-08 1959-04-21 Koppers Co Inc Method of casting metals
US2997386A (en) * 1958-06-27 1961-08-22 Feichtinger Heinrich Process and apparatus for treating metal melts
US3137753A (en) * 1959-06-30 1964-06-16 Fischer Ag Georg Device for treating metallic melts

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634075A (en) * 1969-01-15 1972-01-11 Kawecki Berylco Ind Introducing a grain refining or alloying agent into molten metals and alloys
US3766961A (en) * 1969-09-04 1973-10-23 Roblin Industries Apparatus for continuously casting steel
US3771584A (en) * 1971-01-08 1973-11-13 Roblin Industries Method for continuously casting steel billet strands to minimize the porosity and chemical segregation along the center line of the strand
US3726331A (en) * 1971-04-28 1973-04-10 R Bunting Continuous casting process
US3871875A (en) * 1972-12-15 1975-03-18 Yodogawa Steel Works Flux composition and a centrifugal casting process using the same
US4134196A (en) * 1975-07-25 1979-01-16 Hitachi Cable Ltd. Method of production of a wire-shaped composite addition material
US4233065A (en) * 1978-12-08 1980-11-11 Foote Mineral Company Effective boron alloying additive for continuous casting fine grain boron steels
US4235632A (en) * 1979-04-04 1980-11-25 Mobay Chemical Corporation Particulate slagging composition for the extended optimum continuous casting of steel
US4484731A (en) * 1983-05-12 1984-11-27 Hirotoshi Taniguchi Method and apparatus for continuously treating molten metal
US4512800A (en) * 1983-08-12 1985-04-23 Pfizer Inc. Wire injection apparatus
DE3707322C1 (en) * 1987-03-07 1988-06-16 Odermath Stahlwerkstechnik Wire injection machine
DE3807281A1 (de) * 1988-03-05 1989-09-14 Odermath Stahlwerkstechnik Drahtinjektionsmaschine
EP0378744A1 (de) * 1989-01-13 1990-07-25 Inland Steel Company Verfahren und Vorrichtung zur Zugabe von Granalien zu geschmolzenem Stahl
US4986847A (en) * 1989-09-20 1991-01-22 Fuchs Systemtechnik Gmbh Process and apparatus for at least temporarily simultaneously subjecting a molten metal to the action of a gas and fine-grain solid materials
US5377960A (en) * 1993-03-01 1995-01-03 Berry Metal Company Oxygen/carbon blowing lance assembly
CN109848382A (zh) * 2019-01-30 2019-06-07 凌源钢铁股份有限公司 一种炼钢工艺中钛合金化的方法

Also Published As

Publication number Publication date
BE650985A (de) 1964-11-16
FI44684B (de) 1971-08-31
FR1403347A (fr) 1965-06-18
SE312409B (de) 1969-07-14
GB1068912A (en) 1967-05-17
CH403170A (de) 1965-11-30
DE1252854B (de) 1967-10-26
FI44684C (fi) 1971-12-10

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