FR2810919A1 - Flux-cored wire for introducing additives into a molten metal bath, made up of a metal sheath containing the additives covered by a combustible envelope and enclosed by a metallic protective cover - Google Patents
Flux-cored wire for introducing additives into a molten metal bath, made up of a metal sheath containing the additives covered by a combustible envelope and enclosed by a metallic protective cover Download PDFInfo
- Publication number
- FR2810919A1 FR2810919A1 FR0008284A FR0008284A FR2810919A1 FR 2810919 A1 FR2810919 A1 FR 2810919A1 FR 0008284 A FR0008284 A FR 0008284A FR 0008284 A FR0008284 A FR 0008284A FR 2810919 A1 FR2810919 A1 FR 2810919A1
- Authority
- FR
- France
- Prior art keywords
- cored wire
- additives
- envelope
- bath
- combustible
- 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
Links
- 239000000654 additive Substances 0.000 title claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 title claims abstract description 17
- 230000001681 protective effect Effects 0.000 title claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 9
- 230000001934 delay Effects 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims description 5
- 239000002966 varnish Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 239000012768 molten material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood 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
- 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
-
- 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
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Continuous Casting (AREA)
Abstract
Description
1 28109191 2810919
FIL FOURRE POUR L'INTRODUCTION D'ADDITIFS DANS UN BAIN FURNISHED WIRE FOR THE INTRODUCTION OF ADDITIVES INTO A BATH
DE METAL EN FUSIONOF FUSED METAL
L'invention se rapporte à un fil fourré pour l'introduction d'additifs dans un bain de métal en fusion. Les aciers, fontes, etc... sont des matériaux dont les propriétés mécaniques The invention relates to a cored wire for the introduction of additives into a bath of molten metal. Steels, cast irons, etc ... are materials with mechanical properties
ou autres dépendent notamment de la composition complexe du matériau. or others depend in particular on the complex composition of the material.
Pour obtenir un matériau ayant certaines propriétés, à partir d'une composition de base, on ajuste la teneur en certains éléments pour obtenir la composition To obtain a material having certain properties, starting from a basic composition, the content of certain elements is adjusted to obtain the composition
souhaitée.desired.
Il est connu, depuis une vingtaine d'années, d'ajuster la composition de la matière en fusion par introduction dans celle-ci d'une longueur prédéterminée d'un fil fourré. Ce fil fourré est constitué d'une enveloppe métallique contenant l'additif que It has been known, for twenty years, to adjust the composition of the molten material by introducing into it a predetermined length of a cored wire. This cored wire consists of a metal envelope containing the additive that
I'on souhaite introduire dans le bain en fusion. We want to introduce into the molten bath.
La quantité d'additif par mètre étant connue, il est relativement simple The quantity of additive per meter being known, it is relatively simple
d'ajuster la composition du bain.to adjust the composition of the bath.
Sur les premiers fils fourrés réalisés, I'enveloppe métallique était simplement On the first cored wires produced, the metal envelope was simply
repliée de manière à placer cote à cote les deux bord du feuillard mis en forme. folded so as to place side by side the two edges of the shaped strip.
Une feuille intérieure était préalablement mise en place pour fermer le passage qui subsistait entre les bords dudit feuillard mais celle-ci était peu efficace dans la mesure o ce fil fourré subit une opération de bobinage sur un touret puis de An inner sheet was previously put in place to close the passage which remained between the edges of said strip, but this was not very effective insofar as this cored wire underwent a winding operation on a reel and then
débobinage lors de son utilisation. unwinding during use.
Cette solution a été rapidement remplacée par une fermeture différente du This solution was quickly replaced by a different closure of the
feuillard.strip.
Ce procédé consiste à agrafer mécaniquement les deux bords du feuillard. This process consists of mechanically stapling the two edges of the strip.
Il s'agit plus précisément de rouler ensemble les deux bords pour que les It is more precisely to roll the two edges together so that the
bords s'accrochent l'un sur l'autre. edges cling to each other.
Cela évite alors des pertes de l'additif contenu dans le dit feuillard. This then prevents losses of the additive contained in the said strip.
Cette solution qui permet l'ajustement d'une composition par introduction d'un fil fourré dans la matière en fusion fonctionne très correctement avec la plupart des additifs. Toutefois se posent des problèmes avec certains additifs, tels le calcium, le This solution which allows the adjustment of a composition by introducing a cored wire into the molten material works very well with most additives. However, problems arise with certain additives, such as calcium,
magnésium, le sélénium, le souffre ou autres. magnesium, selenium, sulfur or others.
2 28109192 2810919
En effet, pour certains de ces additifs, la chaleur du bain de métal en fusion Indeed, for some of these additives, the heat of the molten metal bath
provoque l'explosion du fil fourré dans une zone très proche de la surface du bain. causes the cored wire to explode in an area very close to the surface of the bath.
Pour d'autres additifs, ceux-ci se vaporisent très rapidement et à proximité de For other additives, these vaporize very quickly and close to
la surface.the surface.
Il se produit donc une forte réactivité en surface ce qui engendre une oxydation et/ou une renitruration du bain, des projections du métal liquide qui There is therefore a high reactivity on the surface which generates oxidation and / or renitriding of the bath, projections of the liquid metal which
endommagent le matériel, de fortes émanations de fumée. damage the equipment, strong fumes.
Avec ces additifs, le rendement de cette opération d'introduction est donc trop With these additives, the yield of this introduction operation is therefore too
faible et avec des conditions de sécurité inadaptées à l'utilisation industrielle. weak and with safety conditions unsuitable for industrial use.
Pour tenter de remédier à ce problème, il est connu d'introduire le fil fourré au To try to remedy this problem, it is known to introduce the cored wire to the
travers d'une buse en matériau réfractaire plongée dans le bain. through a nozzle made of refractory material immersed in the bath.
L'utilisation de cette buse est très délicate et très coûteuse. The use of this nozzle is very delicate and very expensive.
L'invention se propose de remédier aux inconvénient précités. The invention proposes to remedy the aforementioned drawback.
A cet effet, l'invention a pour objet un fil fourré comprenant une gaine métallique contenant un additif, ce fil fourré étant caractérisé en ce que cette gaine métallique est recouverte par une enveloppe qui, combustible sans laisser de résidus gênants, retarde momentanément la propagation de la chaleur vers le coeur du fil fourré. To this end, the subject of the invention is a cored wire comprising a metal sheath containing an additive, this cored wire being characterized in that this metal sheath is covered by an envelope which, combustible without leaving annoying residues, temporarily delays the propagation heat to the core of the cored wire.
L'invention sera bien comprise à l'aide de la description ci-après faite à titre The invention will be better understood with the aid of the description below made by way of
d'exemple non limitatif, en regard du dessin ci-annexé qui représente schématiquement: - figure 1: une coupe d'un fil fourré selon l'invention, - figure 2: une préparation en fil fourré, non-limiting example, with reference to the appended drawing which schematically represents: - Figure 1: a section of a cored wire according to the invention, - Figure 2: a preparation of cored wire,
- figure 3: une installation utilisant un fil fourré. - Figure 3: an installation using a cored wire.
En se reportant un dessin, on voit un fil 1 fourré destiné à l'introduction d'un Referring to a drawing, we see a cored wire 1 intended for the introduction of a
additif dans un bain 2 de matière en fusion, tel un acier, une fonte ou autre. additive in a bath 2 of molten material, such as steel, cast iron or the like.
Ce bain en fusion est à une température relativement importante et il est This molten bath is at a relatively high temperature and it is
contenu dans une poche 3.contained in a pocket 3.
Pour ajuster la composition du bain de matière en fusion, on introduit dans le To adjust the composition of the bath of molten material, the following is introduced into the
bain ce fil fourré 1 avec une vitesse prédéterminée. bath this cored wire 1 with a predetermined speed.
Les moyens 4 d'introduction sont classiques et ne seront pas détaillés. The means 4 of introduction are conventional and will not be detailed.
Classiquement, ce fil fourré comprend une gaine 5 métallique contenant un Conventionally, this cored wire comprises a metallic sheath containing a
additif 6.additive 6.
3 28109193 2810919
Cette gaine 5 métallique est fermée mécaniquement, c'est à dire que les This metal sheath 5 is mechanically closed, that is to say that the
bords du feuillard sont associés entre eux, par exemple par roulage. edges of the strip are associated with each other, for example by rolling.
Avantageusement, cette gaine métallique est recouverte par une enveloppe 7 qui, combustible sans laisser de résidus gênants, retarde momentanément la propagation de la chaleur vers le coeur du fil fourré. Par résidus gênants, on comprendra des résidus qui affectent la composition du bain ou produisent des inclusions modifiant le comportement du bain lors de la coulée. Avantageusement, I'enveloppe 7 de protection est constituée par au moins Advantageously, this metal sheath is covered by an envelope 7 which, combustible without leaving annoying residues, temporarily delays the propagation of heat towards the core of the cored wire. By annoying residues, we mean residues which affect the composition of the bath or produce inclusions modifying the behavior of the bath during casting. Advantageously, the protective casing 7 is constituted by at least
une couche 7A de papier enroulé autour de la gaine métallique. a layer 7A of paper wrapped around the metal sheath.
Le papier 7A est un papier dit pour application pyrotechnique. 7A paper is a paper said for pyrotechnic application.
C'est à dire qu'il présente une résistance à l'inflammation et un coefficient de That is to say that it has an ignition resistance and a coefficient of
résistance thermique supérieure à celle d'une feuille de papier ordinaire. higher thermal resistance than a sheet of plain paper.
Cette protection thermique est obtenue: - soit en intégrant dans la composition du papier des constituants retardant l'inflammation, - soit en combinant la couche de papier et la colle utilisée pour encoller l'une This thermal protection is obtained: - either by integrating into the composition of the paper constituents delaying ignition, - or by combining the layer of paper and the glue used to glue one
sur l'autre des bandes superposées. on the other, overlapping bands.
Par exemple, sont connus des papiers ignifugés non couchés sans bois garantis M1. Il s'agit d'un matériau pour lequel la propagation des flammes est nulle, For example, there are known fireproof uncoated papers without wood guaranteed M1. It is a material for which the propagation of flames is zero,
pas de chutes de gouttes enflammées et pas de persistance de flammes. no falling flaming drops and no persistent flames.
Cette enveloppe a des caractéristiques d'isolation thermique tout en étant combustible. Des essais ont été réalisés avec un type de papier et montre: - que sans couche de papier le fil fourré explose au bout d'une seconde, avec deux couches, le fil fourré explose au bout d'une seconde et demi et - avec dix couches, le fil fourré explose au bout de deux secondes et deux dixièmes. Ainsi, en ajustant l'épaisseur de l'enveloppe et la vitesse d'introduction du fil fourré, on retarde suffisamment soit l'explosion, soit la vaporisation et on parvient This envelope has thermal insulation characteristics while being combustible. Tests have been carried out with one type of paper and show: - that without a layer of paper the cored wire explodes after one second, with two layers, the cored wire explodes after one and a half seconds and - with ten layers, the cored wire explodes after two seconds and two tenths. Thus, by adjusting the thickness of the envelope and the speed of introduction of the cored wire, one sufficiently delays either the explosion, or the vaporization and one arrives
donc aisément à introduire le fil fourré à une profondeur suffisante. therefore easily to introduce the cored wire to a sufficient depth.
La ou les couches de l'enveloppe sont avantageusement constituées par un The layer or layers of the envelope are advantageously constituted by a
ou plusieurs enroulements hélicoïdaux d'une bande de papier. or several helical windings of a strip of paper.
Ces enroulements sont par exemple croisés. These windings are for example crossed.
Une fixation externe de ces couches est, dans une variante de réalisation, effectuée par application d'une couche de vernis qui sera bien évidemment dépourvue d'eau ou de substances réagissant violemment avec le matériau An external fixing of these layers is, in an alternative embodiment, carried out by application of a layer of varnish which will obviously be devoid of water or substances reacting violently with the material.
constituant le bain.constituting the bath.
Est donc prévue une couche de fixation de l'enveloppe notamment lorsque An envelope fixing layer is therefore provided, in particular when
celle-ci est formée de plusieurs bandes. it is made up of several bands.
La largeur de la bande est, de préférence, adaptée au diamètre de fil et aux The width of the strip is preferably adapted to the diameter of the wire and the
conditions d'utilisation et, par exemple, comprise entre cinq et quarante centimètres. conditions of use and, for example, between five and forty centimeters.
L'épaisseur de l'enveloppe de protection sera donc adaptée au besoin de The thickness of the protective envelope will therefore be adapted to the need for
l'utilisateur (température du bain et matériau à injecter). the user (bath temperature and material to be injected).
28109192810919
Claims (7)
Priority Applications (19)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0008284A FR2810919B1 (en) | 2000-06-28 | 2000-06-28 | FURNISHED WIRE FOR THE INTRODUCTION OF ADDITIVES INTO A FUSED METAL BATH |
| US09/809,050 US6770366B2 (en) | 2000-06-28 | 2001-03-16 | Cored wire for introducing additives into a molten metal bath |
| JP2002506257A JP3826382B2 (en) | 2000-06-28 | 2001-06-27 | Filling wire for guiding additives into the molten metal bath |
| SK291-2002A SK286443B6 (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additives into a molten metal bath |
| UA2002032433A UA74795C2 (en) | 2000-06-28 | 2001-06-27 | A filler wire for introducing additives into a molten metal bath |
| TR200200516T TR200200516T1 (en) | 2000-06-28 | 2001-06-27 | Core wire for the inclusion of molten additives |
| KR10-2002-7001704A KR100470442B1 (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additives into a molten metal bath |
| CNB018018661A CN1221671C (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additives into molten metal bath |
| PCT/FR2001/002044 WO2002000946A1 (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additives into a molten metal bath |
| CZ20020656A CZ297155B6 (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additive into molten metal bath |
| MXPA02001886A MXPA02001886A (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additives into a molten metal bath. |
| BR0106753A BR0106753A (en) | 2000-06-28 | 2001-06-27 | Fondant Soul Yarn |
| CA 2382168 CA2382168C (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additives into a molten metal bath |
| AU70680/01A AU780446B2 (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additives into a molten metal bath |
| HU0302037A HU229916B1 (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additives into a molten metal bath |
| EP01949549A EP1294954A1 (en) | 2000-06-28 | 2001-06-27 | Flux-cored wire for introducing additives into a molten metal bath |
| PL01352369A PL195735B1 (en) | 2000-06-28 | 2001-06-27 | Rod with contents of powder alloy addition introduced to liquid metal |
| ZA200201042A ZA200201042B (en) | 2000-06-28 | 2002-02-06 | Flux-cored wire for introducing additives into a molten metal bath. |
| NO20020964A NO20020964D0 (en) | 2000-06-28 | 2002-02-27 | Core rod for supplying additives to a metal melt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0008284A FR2810919B1 (en) | 2000-06-28 | 2000-06-28 | FURNISHED WIRE FOR THE INTRODUCTION OF ADDITIVES INTO A FUSED METAL BATH |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2810919A1 true FR2810919A1 (en) | 2002-01-04 |
| FR2810919B1 FR2810919B1 (en) | 2002-09-13 |
Family
ID=8851779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0008284A Expired - Lifetime FR2810919B1 (en) | 2000-06-28 | 2000-06-28 | FURNISHED WIRE FOR THE INTRODUCTION OF ADDITIVES INTO A FUSED METAL BATH |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2810919B1 (en) |
| UA (1) | UA74795C2 (en) |
| ZA (1) | ZA200201042B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7906747B2 (en) | 2004-06-10 | 2011-03-15 | Affival | Cored wire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4163827A (en) * | 1978-01-23 | 1979-08-07 | Caterpillar Tractor Co. | Method of making a wrapped innoculation rod suitable for modifying the composition of molten metals |
| DE2923236A1 (en) * | 1979-06-08 | 1980-12-18 | Bbc Brown Boveri & Cie | Inoculation of molten cast iron using magnesium wire - provided with protective coating, is carried out in pressurised furnace |
| EP0032874A2 (en) * | 1980-01-16 | 1981-07-29 | Arbed S.A. | Cored composite wire for introducing additives into a metal bath |
| JPH0261006A (en) * | 1988-08-25 | 1990-03-01 | Hitachi Cable Ltd | Additives for steelmaking |
-
2000
- 2000-06-28 FR FR0008284A patent/FR2810919B1/en not_active Expired - Lifetime
-
2001
- 2001-06-27 UA UA2002032433A patent/UA74795C2/en unknown
-
2002
- 2002-02-06 ZA ZA200201042A patent/ZA200201042B/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4163827A (en) * | 1978-01-23 | 1979-08-07 | Caterpillar Tractor Co. | Method of making a wrapped innoculation rod suitable for modifying the composition of molten metals |
| DE2923236A1 (en) * | 1979-06-08 | 1980-12-18 | Bbc Brown Boveri & Cie | Inoculation of molten cast iron using magnesium wire - provided with protective coating, is carried out in pressurised furnace |
| EP0032874A2 (en) * | 1980-01-16 | 1981-07-29 | Arbed S.A. | Cored composite wire for introducing additives into a metal bath |
| JPH0261006A (en) * | 1988-08-25 | 1990-03-01 | Hitachi Cable Ltd | Additives for steelmaking |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 014, no. 236 (C - 0720) 18 May 1990 (1990-05-18) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7906747B2 (en) | 2004-06-10 | 2011-03-15 | Affival | Cored wire |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2810919B1 (en) | 2002-09-13 |
| UA74795C2 (en) | 2006-02-15 |
| ZA200201042B (en) | 2003-02-06 |
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