EP0281485A1 - Mischprodukt in einer rohrförmigen Hülle zur Behandlung von geschmolzenen Metallbädern - Google Patents

Mischprodukt in einer rohrförmigen Hülle zur Behandlung von geschmolzenen Metallbädern Download PDF

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Publication number
EP0281485A1
EP0281485A1 EP88420033A EP88420033A EP0281485A1 EP 0281485 A1 EP0281485 A1 EP 0281485A1 EP 88420033 A EP88420033 A EP 88420033A EP 88420033 A EP88420033 A EP 88420033A EP 0281485 A1 EP0281485 A1 EP 0281485A1
Authority
EP
European Patent Office
Prior art keywords
composite product
envelope
metal
granular material
product according
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.)
Granted
Application number
EP88420033A
Other languages
English (en)
French (fr)
Other versions
EP0281485B1 (de
Inventor
Michel Douchy
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.)
Affival SA
Original Assignee
Affival SA
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 Affival SA filed Critical Affival SA
Priority to AT88420033T priority Critical patent/ATE57541T1/de
Publication of EP0281485A1 publication Critical patent/EP0281485A1/de
Application granted granted Critical
Publication of EP0281485B1 publication Critical patent/EP0281485B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • C21C1/025—Agents used for dephosphorising or desulfurising
    • 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
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • C21C7/0645—Agents used for dephosphorising or desulfurising
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12049—Nonmetal component
    • Y10T428/12056—Entirely inorganic
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12069—Plural nonparticulate metal components
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/1209—Plural particulate metal components
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12097—Nonparticulate component encloses particles

Definitions

  • the object of the invention relates to a composite product with a tubular casing for the treatment of molten metal baths as well as to a process for the implementation of this product.
  • This composite product for the treatment of molten metal baths which is described in the utility certificate FR.2433.584.
  • This composite product called cored wire in this document, comprises in particular a metal sheath or envelope constituted by a thin strip of great length, the edges of which are curved so as to obtain by approximation or by welding a substantially circular section. Inside this sheath is housed a pulverulent or granular material such as, for example, a Ca Si alloy powder.
  • a cored wire 12 mm in diameter, for a sheath thickness of 0.5 mm is introduced, by example in a pocket of liquid steel at a speed of 2m / sec. (FR 2,433,584 page 4).
  • a steel bath in a pocket is treated with a composite product with a steel casing, introduced approximately vertically into the bath, the depth of penetration depends on the thickness of the casing and the speed of introduction but the residence time is very short because as soon as the envelope melting temperature is reached it is dissolved almost instantly.
  • the composite product which is the subject of the invention makes it possible to treat metal baths in depth.
  • the method which is also the subject of the invention, makes it possible in particular to desulfurize the steel or cast iron baths, with particularly high efficiency, thanks to the release in two successive stages of the content of the composite product during its penetration into such baths.
  • This composite product is composed of a very long tubular metal casing inside which are housed the powdery or granular material or materials for the treatment of molten metal baths, this product being introduced into these metal baths.
  • This composite product comprises, inside the tubular envelope, an axial zone containing at least one first pulverulent or granular material surrounded by an intermediate metallic tubular wall.
  • An annular zone, between the intermediate tubular wall and the tubular envelope, also contains at least one second pulverulent or granular material.
  • the envelope and the intermediate wall are made of metals compatible with the bath to be treated.
  • the envelope will have a substantially circular shape, as will the intermediate wall.
  • the tubular casing and the intermediate wall may be produced, depending on the case, either in the same metal or in different metals, the nature of this or these being compatible with the bath to be treated and the thickness of the 'envelope and wall being determined according to the conditions corresponding to each application.
  • the axial zone of the composite product contains at least one element chosen from calcium and magnesium alloyed or unalloyed.
  • the second pulverulent or granular material may have all or part of the same composition as the first pulverulent or granular material. However, such a case will generally be quite rare.
  • the invention also relates to a method of treating metal baths using the product according to the invention.
  • the composition of the first and second pulverulent or granular materials is adjusted so that the axial zone contains at least for the most part the material (s) most reactive or most volatile with respect to the bath to be treated.
  • the method applies in particular to the desulfurization treatment of steels and cast irons.
  • these metals are treated by means of the composite product according to the invention, at least the axial zone thereof containing in the alloyed or unalloyed state magnesium and / or calcium.
  • the annular zone of this same composite product contains one or more materials ensuring additional desulfurization such as for example MgO, CaO, Ca CO3, Na2CO3, Ca C2 in powder or granular form.
  • additional desulfurization material is combined with aluminum in granular form or not.
  • This second material included in the annular zone can also comprise complementary products to compensate for the elements of the metal bath which disappear during a thorough desulfurization of the metal, such as for example silicon.
  • the composite product according to the invention can be produced by any method known to those skilled in the art.
  • edges of the strips forming the intermediate wall and the envelope can be closed by any known means compatible with the pulverulent or granular materials used: bringing together edge to edge, covering, stapling or the like.
  • the material contained, both in the axial zone and in the annular zone, is preferably compacted by also known means such as compression, stretching or the like.
  • the product according to the invention retains significant rigidity during its penetration into a metal bath.
  • the material which fills the annular zone plays the role of an effective insulator which considerably slows down the rise in temperature of the intermediate wall. It therefore retains a significant fraction of its mechanical characteristics. It therefore cooperates with the content of the axial zone to resist the forces which tend to deform it in bending and also to the hydrostatic thrust which tends to prevent it from sinking into the metal bath. It is only from the moment when this intermediate wall comes into direct contact with the metal bath, following the dissolution or fusion of the envelope, that the temperature of this wall rises very quickly and that its mechanical characteristics collapse.
  • the envelope must preferably be made of a metal whose melting temperature is at least equal to that of the metal from which the intermediate wall is made.
  • the sections of the axial zone and of the annular zone are determined on the basis of the respective volumes of the materials which it is intended to accommodate therein.
  • the metal and thickness of the casing must be determined so that the time necessary for its fusion, or complete dissolution, corresponds, taking into account the speed of penetration of the composite product into the metal bath, at the depth at which it is desired to release the material contained in the annular zone.
  • the single figure represents a composite product (1), according to the invention, of substantially circular section with axis (0). It has an outer casing (2) of steel 14 mm in external diameter and 0.3 mm thick.
  • the intermediate steel wall (3) is 9 mm outside diameter and 0.4 mm thick.
  • the axial zone (4) contains grains of unalloyed calcium about 0.5 mm in diameter.
  • the intermediate wall, closed by simple covering in (5), was slightly tightened on its content by reducing its outside diameter by about 25% by passing through a die.
  • the annular zone (6) is filled with iron powder.
  • the outer envelope which is stapled at (7) is also tightened on its contents.
  • This compost product is treated with 65 tonnes of liquid steel contained in a ladle bag at a temperature of 1580 ° C. to desulfurize the metal.
  • the measurements on composite product extracted from the bath make it possible to estimate the difference in height between the two points of passage in the bath of the outer tubular casing and of the intermediate tubular wall at 50 to 60 cm.
  • the value measured on product removed from the bath very quickly after interruption of the injection is actually lower (38 cm) because the calcium in the axial zone continues to burn in the open air for about one minute.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Coating With Molten Metal (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Laminated Bodies (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Chemically Coating (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Metal Extraction Processes (AREA)
  • Powder Metallurgy (AREA)
EP88420033A 1987-02-03 1988-02-03 Mischprodukt in einer rohrförmigen Hülle zur Behandlung von geschmolzenen Metallbädern Expired - Lifetime EP0281485B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88420033T ATE57541T1 (de) 1987-02-03 1988-02-03 Mischprodukt in einer rohrfoermigen huelle zur behandlung von geschmolzenen metallbaedern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8701433 1987-02-03
FR8701433A FR2610331A1 (fr) 1987-02-03 1987-02-03 Produit composite a enveloppe tubulaire pour le traitement des bains metalliques fondus

Publications (2)

Publication Number Publication Date
EP0281485A1 true EP0281485A1 (de) 1988-09-07
EP0281485B1 EP0281485B1 (de) 1990-10-17

Family

ID=9347636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420033A Expired - Lifetime EP0281485B1 (de) 1987-02-03 1988-02-03 Mischprodukt in einer rohrförmigen Hülle zur Behandlung von geschmolzenen Metallbädern

Country Status (15)

Country Link
US (1) US4863803A (de)
EP (1) EP0281485B1 (de)
JP (1) JPS63227712A (de)
KR (1) KR880010141A (de)
CN (1) CN1010324B (de)
AT (1) ATE57541T1 (de)
AU (1) AU607968B2 (de)
BR (1) BR8800405A (de)
DE (1) DE3860801D1 (de)
DK (1) DK52088A (de)
ES (1) ES2018355B3 (de)
FR (1) FR2610331A1 (de)
GR (1) GR3000950T3 (de)
IN (1) IN169055B (de)
ZA (1) ZA88736B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000011227A1 (en) * 1998-08-25 2000-03-02 Partek Nordkalk Aktiebolag Elongated product used for desulphurization of a steel bath
US7906747B2 (en) 2004-06-10 2011-03-15 Affival Cored wire
EP2918688A1 (de) * 2014-03-11 2015-09-16 Affival Entschwefelungsverfahren eines flüssigen Gusseisens, und Seelendraht für seine Umsetzung
WO2021025596A1 (ru) * 2019-08-05 2021-02-11 Общество с ограниченной ответственностью Новые перспективные продукты Технология Проволока с наполнителем для внепечной обработки металлургических расплавов

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2630131B1 (fr) * 1988-04-14 1990-08-03 Affival Procede de desulfuration des fontes
US6346135B1 (en) * 1998-12-10 2002-02-12 Minerals Technologies Inc. Cored wire for treating molten metal
FR2821626B1 (fr) * 2001-03-05 2004-05-07 Affival Sa Fil fourre pour l'introduction d'additifs dans un bain de metal en fusion
US6770366B2 (en) * 2000-06-28 2004-08-03 Affival S.A. Cored wire for introducing additives into a molten metal bath
CN1328394C (zh) * 2005-07-16 2007-07-25 包头文鑫实业有限公司 复合粉芯包芯线及其制造方法
CN100381586C (zh) * 2006-01-17 2008-04-16 沈阳东北大学冶金技术研究所 一种钢水脱氧用包芯线
WO2012027866A1 (zh) * 2010-09-03 2012-03-08 安帝铁合金(天津)有限公司 多层包芯线
WO2017105280A1 (ru) * 2015-12-14 2017-06-22 Александр Алексеевич НЕРЕТИН Комбинированная инжекционная проволока
RU169359U1 (ru) * 2015-12-14 2017-03-15 Александр Алексеевич Неретин Комбинированная инжекционная проволока
RU2677812C2 (ru) * 2016-04-04 2019-01-21 Акционерное Общество "Чепецкий Механический Завод" (Ао Чмз) Проволока для обработки металлургических расплавов
CN105950827A (zh) * 2016-06-22 2016-09-21 唐山飞迪冶金材料有限公司 一种复合钙铝及其在炼钢生产中的应用
RU184357U9 (ru) * 2017-08-11 2021-10-08 Арам Михайлович Караханянц Инжекционная проволока для обработки металлургических расплавов
RU2693276C1 (ru) * 2018-03-30 2019-07-02 Акционерное общество "Чепецкий механический завод" Проволока для ковшевой обработки стали

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU31206A1 (de) *
US3921700A (en) * 1974-07-15 1975-11-25 Caterpillar Tractor Co Composite metal article containing additive agents and method of adding same to molten metal
US4137446A (en) * 1974-05-22 1979-01-30 Acieries Reunies De Burbach-Eich-Dudelange S.S.Arbed Welding wire constituted by a core of welding powder enclosed by a mantle of metal and a method of producing the welding wire
FR2433584A1 (fr) * 1978-08-17 1980-03-14 Arbed Fil fourre metallique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543741B1 (fr) * 1983-03-16 1985-06-14 Comp Generale Electricite Procede de fabrication de supraconducteurs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU31206A1 (de) *
US4137446A (en) * 1974-05-22 1979-01-30 Acieries Reunies De Burbach-Eich-Dudelange S.S.Arbed Welding wire constituted by a core of welding powder enclosed by a mantle of metal and a method of producing the welding wire
US3921700A (en) * 1974-07-15 1975-11-25 Caterpillar Tractor Co Composite metal article containing additive agents and method of adding same to molten metal
FR2433584A1 (fr) * 1978-08-17 1980-03-14 Arbed Fil fourre metallique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000011227A1 (en) * 1998-08-25 2000-03-02 Partek Nordkalk Aktiebolag Elongated product used for desulphurization of a steel bath
US7906747B2 (en) 2004-06-10 2011-03-15 Affival Cored wire
EP2918688A1 (de) * 2014-03-11 2015-09-16 Affival Entschwefelungsverfahren eines flüssigen Gusseisens, und Seelendraht für seine Umsetzung
FR3018524A1 (fr) * 2014-03-11 2015-09-18 Affival Procede de desulfuration d'une fonte liquide et fil fourre pour sa mise en oeuvre
WO2021025596A1 (ru) * 2019-08-05 2021-02-11 Общество с ограниченной ответственностью Новые перспективные продукты Технология Проволока с наполнителем для внепечной обработки металлургических расплавов
US12203146B2 (en) 2019-08-05 2025-01-21 Research And Development Center Npp, Limited Liability Company Cored wire for out-of-furnace treatment of metallurgical melts

Also Published As

Publication number Publication date
FR2610331A1 (fr) 1988-08-05
CN88100499A (zh) 1988-08-17
DE3860801D1 (de) 1990-11-22
JPS63227712A (ja) 1988-09-22
ATE57541T1 (de) 1990-11-15
EP0281485B1 (de) 1990-10-17
GR3000950T3 (en) 1991-12-10
KR880010141A (ko) 1988-10-07
CN1010324B (zh) 1990-11-07
IN169055B (de) 1991-08-24
BR8800405A (pt) 1988-09-20
AU607968B2 (en) 1991-03-21
DK52088D0 (da) 1988-02-02
ZA88736B (en) 1988-08-03
DK52088A (da) 1988-08-04
AU1118788A (en) 1988-08-04
US4863803A (en) 1989-09-05
ES2018355B3 (es) 1991-04-01

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