FR2711376A1 - Composite wire for introducing magnesium into a liquid metal - Google Patents
Composite wire for introducing magnesium into a liquid metal Download PDFInfo
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- FR2711376A1 FR2711376A1 FR9312844A FR9312844A FR2711376A1 FR 2711376 A1 FR2711376 A1 FR 2711376A1 FR 9312844 A FR9312844 A FR 9312844A FR 9312844 A FR9312844 A FR 9312844A FR 2711376 A1 FR2711376 A1 FR 2711376A1
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- magnesium
- composite wire
- wire
- sheath
- wire according
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- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 41
- 239000011777 magnesium Substances 0.000 title claims abstract description 41
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 239000003000 extruded plastic Substances 0.000 claims abstract description 3
- 239000000654 additive Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- -1 magnesium-aluminum-calcium Chemical compound 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- 239000005997 Calcium carbide Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 238000007792 addition Methods 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 claims description 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 2
- 235000012241 calcium silicate Nutrition 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 229910052712 strontium Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 238000001033 granulometry Methods 0.000 claims 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 229910000805 Pig iron Inorganic materials 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 229910001018 Cast iron Inorganic materials 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000035515 penetration Effects 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229910000882 Ca alloy Inorganic materials 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- ZPUCINDJVBIVPJ-LJISPDSOSA-N cocaine Chemical compound O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1 ZPUCINDJVBIVPJ-LJISPDSOSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000011090 industrial biotechnology method and process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
-
- 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
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)
Abstract
Description
FIL COMPOSITE POUR L'INTRODUCTION DE MAGNESIUM
DANS UN METAL LIQUIDE
DOMAINE TECHNIQUE
L'invention se situe dans le domaine du traitement des métaux liquides, en particulier la fonte, par le magnésium, qui peut agir par exemple comme désulfurant et/ou nodulisant.COMPOSITE WIRE FOR THE INTRODUCTION OF MAGNESIUM
IN LIQUID METAL
TECHNICAL AREA
The invention relates to the field of treatment of liquid metals, in particular cast iron, with magnesium, which can act, for example, as desulfurizer and / or nodulizer.
ART ANTERIEUR
Le magnésium est couramment utilisé dans le traitement de la fonte liquide et, à la température d'utilisation qui se situe entre 1300 et 1700"C, celui-ci se vaporise très rapidement, entrainant une réaction violente et des rendements médiocres.PRIOR ART
Magnesium is commonly used in the treatment of liquid cast iron and, at the operating temperature which is between 1300 and 1700 "C, it vaporizes very quickly, causing a violent reaction and poor yields.
Un des moyens utilisés pour introduire des additifs dans un bain de fonderie est de réaliser un fil composite, appelé "fil fourré" où le produit d'addition, généralement sous forme de poudre ou de granulés, est enfermé dans un fourreau cylindrique, le plus souvent en acier.One of the means used to introduce additives into a foundry bath is to produce a composite wire, called a "cored wire" where the adduct, generally in the form of powder or granules, is enclosed in a cylindrical sheath, the most often steel.
Ainsi, le brevet US 3921700 (CATERPILLAR) décrit un fil fourré pour l'addition à un métal ferreux fondu de produits métalliques volatils tels que le magnésium. Le fil comporte une âme en produit d'addition, une gaine externe en acier et, entre les deux, une zone annulaire remplie d'un matériau isolant en particules.Thus, US Patent 3921700 (CATERPILLAR) describes a cored wire for the addition to a molten ferrous metal of volatile metal products such as magnesium. The wire has an adduct core, an outer steel sheath and, in between, an annular area filled with particulate insulating material.
Le brevet EP 15662 (INTERNATIONAL HARVESTER) décrit un traitement en poche de nodulisation et de désulfuration de la fonte dans lequel le magnésium est ajouté sous forme d'un fil composite avec une gaine extérieure d'épaisseur minimale 1,015 mm en acier ou en métal dont le point d'ébullition est nettement supérieur à celui du magnésium.Patent EP 15662 (INTERNATIONAL HARVESTER) describes a nodulization and desulphurization treatment of pig iron in which magnesium is added in the form of a composite wire with an outer sheath of minimum thickness 1.015 mm made of steel or metal, of which the boiling point is much higher than that of magnesium.
Les essais conduits par la demanderesse montrent que le fil fourré magnésium à gaine acier, introduit dans la fonte à 1500"C, donne un rendement magnésium faible, de l'ordre de 30 à 40%, à cause de la faible profondeur de pénétration dans la poche de métal liquide, qui ne dépasse guère une vingtaine de cm, et ceci quelles que soient l'épaisseur de la gaine et la vitesse d'introduction. The tests conducted by the applicant show that the magnesium cored wire with steel sheath, introduced into the cast iron at 1500 "C, gives a low magnesium yield, of the order of 30 to 40%, because of the shallow penetration depth in the pocket of liquid metal, which hardly exceeds twenty cm, and this whatever the thickness of the sheath and the speed of introduction.
D'autres solutions, ne comportant pas de gaine acier ont été proposées. Le brevet FR 2022302 (=US 3768999 NIPPON KOKAN) décrit l'introduction d'un additif dans un métal fondu à l'aide d'un fil composite comportant un fil métallique axial de renforcement et un revêtement extérieur formé de l'additif à introduire, sous forme pulvérulente, et d'un liant, par exemple une résine PTFE, assurant la cohésion de l'additif.Other solutions, not comprising a steel sheath, have been proposed. Patent FR 2022302 (= US 3768999 NIPPON KOKAN) describes the introduction of an additive into a molten metal using a composite wire comprising an axial metal reinforcing wire and an outer coating formed of the additive to be introduced , in powder form, and a binder, for example a PTFE resin, ensuring the cohesion of the additive.
Parmi les nombreux additifs cités figurent le magnésium et ses alliages.Among the many additives mentioned are magnesium and its alloys.
La demande de brevet français n" 92-02867 de la demanderesse est relative à un fil composite pour l'introduction d'additifs à des bains de métal liquide comprenant une âme constituée d'un mélange du produit d'addition en poudre, qui peut être du magnésium et/ou du carbure de calcium, et de polymère thermoplastique extrudé, et une gaine thermoplastique également extrudée. On peut y adjoindre un fil métallique de renforcement pour améliorer la résistance mécanique du fil composite.French patent application No. 92-02867 of the applicant relates to a composite wire for the introduction of additives to baths of liquid metal comprising a core consisting of a mixture of the powdered adduct, which can be magnesium and / or calcium carbide, and of extruded thermoplastic polymer, and a thermoplastic sheath also extruded. A reinforcing metal wire can be added to it to improve the mechanical resistance of the composite wire.
Dans ces deux cas, on utilise le magnésium sous forme de poudre dont la manipulation, au cours de la fabrication du produit, peut être dangereuse à cause des risques d'explosion et la prévention de ces risques conduit à des coûts supplémentaires, à cause, par exemple, de l'utilisation de gaz inerte pour le stockage et la manutention des poudres.In these two cases, magnesium is used in powder form, the handling of which, during the manufacture of the product, can be dangerous because of the risks of explosion and the prevention of these risks leads to additional costs, because, for example, the use of inert gas for the storage and handling of powders.
BUT DE L'INVENTION
Le but de l'invention est de permettre l'introduction de magnésium dans un bain de métal liquide, à une température supérieure à la température de vaporisation du magnésium, par un fil composite, avec un rendement élevé en magnésium grâce à une bonne profondeur de pénétration et une bonne dispersion dans le bain et dont la fabrication soit sans risque et d'un coût peu élevé.PURPOSE OF THE INVENTION
The object of the invention is to allow the introduction of magnesium into a bath of liquid metal, at a temperature higher than the vaporization temperature of magnesium, by a composite wire, with a high magnesium yield thanks to a good depth of penetration and good dispersion in the bath and the manufacture of which is without risk and of low cost.
OBJET DE L'INVENTION
L'invention a pour objet un fil composite pour l'introduction de magnésium dans un bain de métal liquide à une température supérieure à la température de vaporisation du magnésium, constitué d'un fil de magnésium ou d'alliage de magnésium corroyé entouré d'une gaine de matière plastique extrudée.OBJECT OF THE INVENTION
The subject of the invention is a composite wire for the introduction of magnesium into a bath of liquid metal at a temperature higher than the vaporization temperature of magnesium, consisting of a wire of magnesium or of wrought magnesium alloy surrounded by an extruded plastic sheath.
DESCRIPTION DE L'INVENTION
La demanderesse a en effet constaté que cette solution particulièrement simple, mais à laquelle personne n'avait songé auparavant, permettait de résoudre les différents problèmes posés par l'utilisation du magnésium pour le traitement des alliages ferreux dans les meilleures conditions de coût.DESCRIPTION OF THE INVENTION
The Applicant has indeed found that this particularly simple solution, but which no one had thought of before, made it possible to solve the various problems posed by the use of magnesium for the treatment of ferrous alloys under the best cost conditions.
L'âme est constituée d'un fil de magnésium ou d'alliage de magnésium, par exemple d'alliage magnésium-aluminium (Al < 9% en poids) ou d'alliage magnésium-calcium ( Ca < 3%), ou d'alliage magnésium-aluminium-calcium, de diamètre compris entre 3 et 15 mm, avec éventuellement d'autres éléments en faible quantité tels que Zn, Mn, Si, Sr, Li ou des terres rares. Ce fil peut être obtenu, à des coûts de fabrication intéressants, par les mêmes techniques industrielles que les conducteurs électriques en cuivre ou en aluminium, par exemple par coulée continue sur roue et laminage ou par filage de billettes. I1 n'est d'ailleurs pas indispensable que le fil soit parfaitement cylindrique.The core consists of a wire of magnesium or of magnesium alloy, for example of magnesium-aluminum alloy (Al <9% by weight) or of magnesium-calcium alloy (Ca <3%), or d 'magnesium-aluminum-calcium alloy, with a diameter between 3 and 15 mm, possibly with other elements in small quantities such as Zn, Mn, Si, Sr, Li or rare earths. This wire can be obtained, at attractive manufacturing costs, by the same industrial techniques as electrical conductors made of copper or aluminum, for example by continuous casting on a wheel and rolling or by the spinning of billets. I1 is also not essential that the wire is perfectly cylindrical.
La gaine peut être du même type que celle des fils et câbles électriques isolés, c'est à dire en polymère tel que le polyéthylène, le polyuréthane, le polypropylène et les polyamides ou un élastomère naturel ou synthétique tel que le styrène-butadiène ou le nitril-butadiène. On évitera simplement d'introduire, par le biais de la matière plastique, des éléments indésirables pour la fonte, en particulier des halogènes (C1, F, Br) ou du soufre. La gaine a une épaisseur comprise entre 0,1 et 2 mm.The sheath can be of the same type as that of insulated electrical wires and cables, that is to say of polymer such as polyethylene, polyurethane, polypropylene and polyamides or a natural or synthetic elastomer such as styrene-butadiene or nitril-butadiene. One will simply avoid introducing, by means of the plastic material, undesirable elements for the cast iron, in particular halogens (C1, F, Br) or sulfur. The sheath has a thickness of between 0.1 and 2 mm.
L'opération de gainage peut se faire par les techniques industrielles habituelles d'extrusion utilisées dans la fabrication des fils métalliques plastifiés.The sheathing operation can be done by the usual industrial extrusion techniques used in the manufacture of plasticized metal wires.
Si l'on souhaite ajouter, en plus du magnésium, d'autres additifs, par exemple pour ajuster la composition chimique du laitier dans le cas de la désulfuration, on peut incorporer dans la gaine, au moment de l'extrusion, des poudres minérales telles que le carbure de calcium, la chaux, l'alumine, la magnésie ou le silicate dicalcique, avec une granulométrie inférieure à 1 mm.If it is desired to add, in addition to magnesium, other additives, for example to adjust the chemical composition of the slag in the case of desulfurization, it is possible to incorporate in the sheath, at the time of extrusion, mineral powders such as calcium carbide, lime, alumina, magnesia or dicalcium silicate, with a particle size of less than 1 mm.
Le fil composite selon l'invention combine les avantages:
-du fil fourré par rapport à l'injection directe de poudre: facilité de mise en oeuvre, investissement plus faible pour l'équipement d'introduction
-du fil corroyé par rapport à la poudre: sécurité lors de la fabrication du fil fourré, grammage plus important au mètre de fil, dû à la densité plus grande du fil corroyé, entraînant un coût plus bas ramené au kg de magnésium introduit
-de la gaine en matière plastique par rapport à la gaine acier: coût de fabrication moins élevé, meilleur rendement en magnésium à l'introduction, dégagement de gaz de décomposition de la matière plastique assurant une meilleure dispersion du magnésium dans le bain.The composite yarn according to the invention combines the advantages:
- cored wire compared to direct powder injection: ease of implementation, lower investment for introduction equipment
wrought wire compared to powder: safety during the manufacture of the cored wire, heavier grammage per meter of wire, due to the greater density of the wrought wire, resulting in a lower cost reduced to the kg of magnesium introduced
-the plastic sheath compared to the steel sheath: lower manufacturing cost, better magnesium yield upon introduction, release of decomposition gas from the plastic material ensuring better dispersion of magnesium in the bath.
Le fil composite selon l'invention peut également être utilisé pour l'élaboration d'alliages nodulisants pour la fonderie de fonte à base de ferro-silico-magnésium
EXEMPLES Exemple 1
On a introduit dans un bain de 250 kg de fonte à 1500 C, en vue d'un traitement de nodulisation, un fil fourré de l'art antérieur, constitué d'une gaine acier de diamètre 9 mm, remplie de grenaille de magnésium de granulométrie 0,2 à 0,8mm représentant une quantité de 50 g/m. On introduit ainsi 5,7 m de fil à la vitesse de 0,8 m/s. Sur la fonte coulée après cette opération, l'analyse chimique indique une teneur en magnésium de 0,04%, soit un rendement d'introduction de 35%.The composite wire according to the invention can also be used for the preparation of nodulizing alloys for the foundry of cast iron based on ferro-silico-magnesium
EXAMPLES Example 1
A flux-cored wire of the prior art, consisting of a steel sheath with a diameter of 9 mm, filled with magnesium shot of grain size 0.2 to 0.8mm representing an amount of 50 g / m. 5.7 m of wire are thus introduced at the speed of 0.8 m / s. On the cast iron cast after this operation, chemical analysis indicates a magnesium content of 0.04%, ie an introduction yield of 35%.
Exemple 2
On refait une opération analogue avec le même type de fil, mais cette fois on immerge verticalement, de façon quasi instantanée, 0,2 m de fil auquel on impose un mouvement circulaire d'axe vertical et de diamètre 0,2 m.Example 2
We repeat a similar operation with the same type of wire, but this time we immerse vertically, almost instantaneously, 0.2 m of wire on which we impose a circular movement of vertical axis and diameter 0.2 m.
La durée du contact entre le fil fourré et la fonte liquide est mesurée en enregistrant la résistance électrique entre la fonte et le fil; le contact est rompu quand le fil est consommé. Dans ces conditions on mesure t = 1,18 s. The duration of the contact between the cored wire and the liquid cast iron is measured by recording the electrical resistance between the cast iron and the wire; contact is broken when the wire is consumed. Under these conditions we measure t = 1.18 s.
Exemple 3
On refait l'expérience de l'exemple 2 avec un fil de magnésium corroyé de diamètre 6 mm, d'une masse linéaire de 50 g/m, gainé de polyéthylène d'épaisseur 1,2 mm. Example 3
The experiment of Example 2 is repeated with a wrought magnesium wire of diameter 6 mm, with a linear mass of 50 g / m, sheathed with polyethylene of thickness 1.2 mm.
On mesure alors t = 1,50 s.We then measure t = 1.50 s.
Exemple 4
On refait l'expérience de l'exemple 1, avec la même vitesse d'introduction de 0,8 m/s, en utilisant le fil de l'exemple 3 et en limitant la longueur introduite à 4 m. Sur la fonte coulée après l'opération, on mesure une teneur en magnésium de 0,045%, ce qui correspond à un rendement d'introduction du magnésium de 57%.Example 4
The experiment of Example 1 is repeated, with the same introduction speed of 0.8 m / s, using the wire of Example 3 and limiting the length introduced to 4 m. On the cast iron cast after the operation, a magnesium content of 0.045% is measured, which corresponds to a magnesium introduction yield of 57%.
Sachant que la profondeur de pénétration du fil dans un bain de fonte dépend de la durée de vie du fil au contact de la fonte liquide, les exemples 2 et 3 montrent que le fil selon l'invention permet une plus grande profondeur de pénétration, ce qui se traduit par un meilleur rendement d'introduction du magnésium, comme le montre la comparaison des exemples 1 et 4. Knowing that the depth of penetration of the wire into a cast iron bath depends on the lifetime of the wire in contact with liquid cast iron, Examples 2 and 3 show that the wire according to the invention allows a greater depth of penetration, this which results in a better yield of introduction of magnesium, as shown by the comparison of examples 1 and 4.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9312844A FR2711376B1 (en) | 1993-10-19 | 1993-10-19 | Composite wire for the introduction of magnesium into a liquid metal. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9312844A FR2711376B1 (en) | 1993-10-19 | 1993-10-19 | Composite wire for the introduction of magnesium into a liquid metal. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2711376A1 true FR2711376A1 (en) | 1995-04-28 |
| FR2711376B1 FR2711376B1 (en) | 1995-11-24 |
Family
ID=9452287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9312844A Expired - Fee Related FR2711376B1 (en) | 1993-10-19 | 1993-10-19 | Composite wire for the introduction of magnesium into a liquid metal. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2711376B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2764905A1 (en) * | 1997-06-23 | 1998-12-24 | Pechiney Electrometallurgie | PROCESS FOR TREATMENT OF CALCIUM MELT LEAD AND CALCIUM-BASED WIRE FOR THIS TREATMENT |
| FR2871477A1 (en) * | 2004-06-10 | 2005-12-16 | Affival Sa Sa | WIRE FOURRE |
| RU2471001C1 (en) * | 2011-12-09 | 2012-12-27 | Виталий Николаевич Вахрушев | Flux cored wire for out-of-furnace treatment of iron-based molten metals |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2614915C1 (en) * | 2015-10-16 | 2017-03-30 | Общество с ограниченной ответственностью "РЕГИОНАЛЬНАЯ ДИЛЕРСКАЯ КОМПАНИЯ" | Powder wire for out-of-furnace treatment of cast iron in ladle |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2022302A1 (en) * | 1968-10-23 | 1970-07-31 | Nippon Kokan Kk | |
| 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 |
| FR2296692A1 (en) * | 1974-12-31 | 1976-07-30 | Inst Chernoi Metallurgii | Refining pig iron in the ladle with magnesium - using particulate magnesium in a hydrocarbon gas as carrier |
| JPS5396911A (en) * | 1977-02-07 | 1978-08-24 | Hitachi Cable Ltd | Wire additive for steel |
| EP0015662A1 (en) * | 1979-02-28 | 1980-09-17 | International Harvester Company | Method for ladle treatment of molten cast iron using sheathed magnesium wire |
| JPS5945023A (en) * | 1982-09-07 | 1984-03-13 | Hitachi Cable Ltd | Manufacture of composite wire rod |
| DE2743968C2 (en) * | 1976-10-06 | 1986-07-24 | Ford-Werke AG, 5000 Köln | Reagent strand for molten metal |
| EP0559589A1 (en) * | 1992-03-05 | 1993-09-08 | Pechiney Electrometallurgie | Cored wire with a plastic sheath for additions to metal baths |
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1993
- 1993-10-19 FR FR9312844A patent/FR2711376B1/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2022302A1 (en) * | 1968-10-23 | 1970-07-31 | Nippon Kokan Kk | |
| 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 |
| FR2296692A1 (en) * | 1974-12-31 | 1976-07-30 | Inst Chernoi Metallurgii | Refining pig iron in the ladle with magnesium - using particulate magnesium in a hydrocarbon gas as carrier |
| DE2743968C2 (en) * | 1976-10-06 | 1986-07-24 | Ford-Werke AG, 5000 Köln | Reagent strand for molten metal |
| JPS5396911A (en) * | 1977-02-07 | 1978-08-24 | Hitachi Cable Ltd | Wire additive for steel |
| EP0015662A1 (en) * | 1979-02-28 | 1980-09-17 | International Harvester Company | Method for ladle treatment of molten cast iron using sheathed magnesium wire |
| JPS5945023A (en) * | 1982-09-07 | 1984-03-13 | Hitachi Cable Ltd | Manufacture of composite wire rod |
| EP0559589A1 (en) * | 1992-03-05 | 1993-09-08 | Pechiney Electrometallurgie | Cored wire with a plastic sheath for additions to metal baths |
| FR2688231A1 (en) * | 1992-03-05 | 1993-09-10 | Pechiney Electrometallurgie | COMPOSITE WIRE WITH PLASTIC SHEATH FOR ADDITIONS TO METALLIC BATHS. |
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| Title |
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| PATENT ABSTRACTS OF JAPAN vol. 2, no. 131 (C - 78)<2755> 31 October 1978 (1978-10-31) * |
| PATENT ABSTRACTS OF JAPAN vol. 8, no. 148 (M - 308) 11 July 1984 (1984-07-11) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2764905A1 (en) * | 1997-06-23 | 1998-12-24 | Pechiney Electrometallurgie | PROCESS FOR TREATMENT OF CALCIUM MELT LEAD AND CALCIUM-BASED WIRE FOR THIS TREATMENT |
| WO1998059082A1 (en) * | 1997-06-23 | 1998-12-30 | Pechiney Electrometallurgie | Method for treating molten lead with calcium |
| FR2871477A1 (en) * | 2004-06-10 | 2005-12-16 | Affival Sa Sa | WIRE FOURRE |
| WO2006000714A3 (en) * | 2004-06-10 | 2006-06-15 | Affival | Cored wire |
| RU2471001C1 (en) * | 2011-12-09 | 2012-12-27 | Виталий Николаевич Вахрушев | Flux cored wire for out-of-furnace treatment of iron-based molten metals |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2711376B1 (en) | 1995-11-24 |
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