EP1639145B1 - Produits inoculants contenant du bismuth et des terres rares - Google Patents
Produits inoculants contenant du bismuth et des terres rares Download PDFInfo
- Publication number
- EP1639145B1 EP1639145B1 EP04742720A EP04742720A EP1639145B1 EP 1639145 B1 EP1639145 B1 EP 1639145B1 EP 04742720 A EP04742720 A EP 04742720A EP 04742720 A EP04742720 A EP 04742720A EP 1639145 B1 EP1639145 B1 EP 1639145B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- mixture according
- inoculating
- less
- content
- 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.)
- Expired - Lifetime
Links
- 229910052797 bismuth Inorganic materials 0.000 title claims description 27
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims description 27
- 239000002054 inoculum Substances 0.000 title description 35
- 239000000203 mixture Substances 0.000 claims description 63
- 229910045601 alloy Inorganic materials 0.000 claims description 56
- 239000000956 alloy Substances 0.000 claims description 56
- 229910001018 Cast iron Inorganic materials 0.000 claims description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 31
- 239000011575 calcium Substances 0.000 claims description 21
- 229910052791 calcium Inorganic materials 0.000 claims description 19
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 17
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910052787 antimony Inorganic materials 0.000 claims description 5
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 claims description 4
- 238000006731 degradation reaction Methods 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 23
- 229910002804 graphite Inorganic materials 0.000 description 21
- 239000010439 graphite Substances 0.000 description 21
- 229910052742 iron Inorganic materials 0.000 description 12
- 229910000805 Pig iron Inorganic materials 0.000 description 8
- 238000011081 inoculation Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 229910001060 Gray iron Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 229910001567 cementite Inorganic materials 0.000 description 2
- 239000012297 crystallization seed Substances 0.000 description 2
- -1 iron carbides Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910005347 FeSi Inorganic materials 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
-
- 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
- C21C1/105—Nodularising additive agents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
Definitions
- the invention relates to the treatment in the liquid state of cast iron for the manufacture of thin parts for which it is desired to obtain a structure free of iron carbides, and more particularly inoculants based on ferro-silicon and containing bismuth, lead and / or antimony, as well as rare earths.
- Cast iron is a well-known iron-carbon alloy and widely used in the manufacture of castings. It is known that in order to obtain good mechanical properties on these parts, it is necessary to obtain in fine an iron + graphite structure while avoiding as much as possible the formation of Fe 3 C type iron carbides which weaken the alloy.
- the graphite present in cast iron parts can be either in lamellar form (gray cast iron or graphite cast iron called GL cast iron), or in the form of spheroids (cast iron with spheroidal graphite called cast iron GS).
- Gray cast iron is the oldest known and used for the manufacture of castings; given its low resilience due to the presence of lamellar graphite, gray cast iron has application only for parts with little mechanical stress, whereas spheroidal graphite cast iron found, as soon as it was discovered in 1945, numerous applications for highly stressed mechanical parts.
- the technical objective of the foundry is to promote the appearance of graphite during the solidification of the molten iron, and it is well known that, plus the solidification of the cast iron is faster, the more the carbon contained in the iron may appear as iron carbide Fe 3 C. This explains the difficulty encountered in making thin parts containing little iron carbide.
- the liquid iron is subjected to so-called inoculation treatment by adding a ferroalloy, usually ferro-silicon, which, when it is dissolved, will provoke local and ephemeral emergence of crystallization seeds, favoring the precipitation of so-called primary graphite, because it is the first solid to appear in the liquid medium.
- a ferroalloy usually ferro-silicon
- the effectiveness of the inoculants can be assessed either through the quenching thickness evaluated on standard quenching specimen, or through the density of crystallization seeds created in liquid iron. This density can be evaluated by subjecting the melt to a nodulisation treatment so that, during solidification, the graphite appears in nodular form; in this way the micrographic examination of cast iron parts obtained will give a density of nodules corresponding to the density of germs.
- alloys are particularly well suited to the treatment of cast iron for the manufacture of parts with thin parts; however, thin areas show an increase in the density of graphite nodules which affects the structural homogeneity of the pieces.
- the object of the invention is to remedy these drawbacks and to provide inoculant products having improved efficiency and improved particle size stability over time compared to the products of the prior art.
- the invention relates to an inoculant mixture for the treatment of liquid iron consisting of 5 to 75% by weight of at least one type-ferro-silicon-based alloy such as Si / Fe> 2, containing 0.005 at 3% by weight of rare earths, from 0.005 to 3% of bismuth, lead and / or antimony, and less than 3% of calcium, with a ratio (Bi + Pb + Sb) / TR of between 0.9 and 2 , 2, and 25 to 95% of at least one type-B silicon-based alloy, or ferro-silicon such as Si / Fe> 2, containing calcium at a content such that the total calcium content of the mixture is between 0.3 to 3%.
- a ratio (Bi + Pb + Sb) / TR of between 0.9 and 2 , 2, and 25 to 95% of at least one type-B silicon-based alloy, or ferro-silicon such as Si / Fe> 2 containing calcium at a content such that the total calcium content of the mixture is between 0.3 to 3%
- Alloy A may also contain magnesium at a level of between 0.3 and 3%.
- the bismuth content of alloy A is preferably between 0.2 and 0.6%, and its calcium content is preferably less than 2%, and more preferably 0.8%.
- lanthanum accounts for more than 70% of the total mass of rare earths of alloy A.
- Alloy B contains less than 0.01% of bismuth, lead and / or antimony. The total calcium of the mixture is provided by the alloy B for a portion of between 75 and 95%, and even more preferably between 80 and 90%.
- the total bismuth content of the mixture is preferably between 0.05 and 0.3%, its total rare earth content between 0.04 and 0.15%, and its total oxygen content less than 0.2. %.
- the tests made by the Applicant have surprisingly shown the interest of replacing the alloys of the "Spherix" type, by a mixture of alloys leading to a substantially identical overall composition, containing on the one hand an alloy A of the same type, preferably with a lower calcium content, typically less than 2%, or even less than 0.8%, and other part of a ferro-silicon alloy B, with a silicon content preferably between 70 and 80%, containing substantially no bismuth, typically less than 0.01%, but with a higher content of calcium of such that the mixture of these two alloys gives the analysis of a conventional alloy.
- the alloy B may also be silico-calcium with a silicon content of between 54 and 68% and a calcium content of between 25 and 42%.
- the mixture may be in the form of grains smaller than 7 mm, or powder with a particle size of less than 2.2 mm.
- this type of mixture has been confirmed as being a more effective solution than that described in EP 0816522 because it makes it possible to guarantee granulometric resistance over time.
- particle size degradation defined as the mass fraction below 200 ⁇ m appearing in 24 hours on contact with water, of less than 10%, and preferably less than 5%, even after storage time. greater than one year, which the alloy of the prior art absolutely does not allow.
- the inoculating mixture gives lower quenching thicknesses than the alloy, and avoids an excessive increase in the density of the graphite nodules in the sections. thinner pieces.
- a new cast iron filler was melted in an induction furnace and treated by the Tundish Cover process using a FeSiMg-type alloy at 5% Mg, 1% Ca, and 0.56% rare earth at the dose. 25 kg for 1600 kg of cast iron.
- This cast was inoculated with the jet using the inoculant alloy B used at a dose of 1 kg per ton of cast iron. It was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 487 / mm 2 at the heart of the 24 mm thick zone, 1076 / mm 2 at the heart of the 6 mm thick zone, and 1283 / mm 2 at the heart of the area of thickness 2 mm.
- the previous example was redone by inoculating the cast iron by means of the inoculant alloy D used at a dose of 1 kg per tonne of cast iron.
- This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 304 / mm 2 at the heart of the 24 mm thick zone, 631 / mm 2 at the heart of the 6 mm thick zone, and 742 / mm 2 at the heart of the area of thickness 2 mm.
- Example 3 The test of Example 3 was redone under the same conditions, but the inoculation of the cast iron was made by means of the inoculant alloy G used at the dose of 1 kg per ton of cast iron. This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 209 / mm 2 at the heart of the 24 mm thick zone, 405 / mm 2 at the heart of the 6 mm thick zone, and 470 / mm 2 at the heart of the area of thickness 2 mm.
- Example 3 The test of Example 3 was redone under the same conditions, but the inoculation of the cast iron was made by means of the inoculant mixture K used at a dose of 1 kg per ton of pig iron.
- This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 343 / mm 2 at the heart of the 24 mm thick zone, 705 / mm 2 at the heart of the 6 mm thick zone, and 828 / mm 2 at the heart of the area of thickness 2 mm.
- Example 4 The test of Example 4 was redone under the same conditions, but the inoculation of the cast iron was made by means of the inoculant mixture L used at a dose of 1 kg per ton of pig iron. This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 269 / mm 2 at the heart of the 24 mm thick zone, 518 / mm 2 at the heart of the 6 mm thick zone, and 600 / mm 2 at the heart of the area of thickness 2 mm.
- Example 5 The test of Example 5 was redone under the same conditions, but the inoculation of the cast iron was made by means of the inoculant mixture M used at a dose of 1 kg per ton of pig iron.
- Example 6 The test of Example 6 was redone by replacing the inoculant mixture L with the inoculant mixture M used at a dose of 1 kg per tonne of pig iron.
- This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 234 / mm 2 in the heart of the 24 mm thick zone, 425 / mm 2 in the heart of the 6 mm thick zone, and 486 / mm 2 in the heart of the area of thickness 2 mm.
- Example 7 The test of Example 7 was redone using inoculant mixture L at the rate of 1.5 kg per ton of pig iron.
- This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 309 / mm 2 at the heart of the 24 mm thick zone, 536 / mm 2 at the heart of the 6 mm thick zone, and 607 / mm 2 at the heart of the area of thickness 2 mm.
- Example 8 The test of Example 8 was redone using the inoculant M mixture at the rate of 1.5 kg per ton of cast iron.
- This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 266 / mm 2 at the heart of the 24 mm thick zone, 440 / mm 2 at the heart of the 6 mm thick zone, and 491 / mm 2 at the heart of the area of thickness 2 mm.
- Example 9 The test of Example 9 was redone using the N inoculant mixture at the rate of 1.5 kg per ton of pig iron.
- This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 247 / mm 2 at the heart of the 24 mm thick zone, 383 / mm 2 at the heart of the 6 mm thick zone, and 422 / mm 2 at the heart of the area of thickness 2 mm.
- Example 10 The test of Example 10 was redone using the inoculant O mixture at the rate of 1.5 kg per ton of pig iron.
- This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 273 / mm 2 at the heart of the 24 mm thick zone, 457 / mm 2 at the heart of the 6 mm thick zone, and 517 / mm 2 at the heart of the area of thickness 2 mm.
- Example 11 The test of Example 11 was redone using the inoculant P mixture at the rate of 1.5 kg per ton of pig iron.
- This liquid cast iron was used to make a plate 24 mm thick having in the perpendicular position fins 6 and 2 mm thick.
- the density of graphite nodules observed is 260 / mm 2 at the heart of the zone of thickness 24 mm, 410 / mm 2 at the heart of the zone of thickness 6 mm, and 459 / mm 2 at the heart of the area of thickness 2 mm.
- Examples 12 and 13 show that by combining in a mixture several inoculants, including a bismuth inoculant even in a small proportion, it is possible to significantly reduce the structural differences obtained in cast iron pieces having very different sections in thickness.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0306033A FR2855186B1 (fr) | 2003-05-20 | 2003-05-20 | Produits inoculants contenant du bismuth et des terres rares |
| PCT/FR2004/001167 WO2004104252A1 (fr) | 2003-05-20 | 2004-05-13 | Produits inoculants contenant du bismuth et des terres rares |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1639145A1 EP1639145A1 (fr) | 2006-03-29 |
| EP1639145B1 true EP1639145B1 (fr) | 2010-08-11 |
Family
ID=33396594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04742720A Expired - Lifetime EP1639145B1 (fr) | 2003-05-20 | 2004-05-13 | Produits inoculants contenant du bismuth et des terres rares |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US7569092B2 (ja) |
| EP (1) | EP1639145B1 (ja) |
| JP (1) | JP4680913B2 (ja) |
| KR (1) | KR101145328B1 (ja) |
| CN (1) | CN100408710C (ja) |
| AR (1) | AR044351A1 (ja) |
| AT (1) | ATE477346T1 (ja) |
| BR (1) | BRPI0410414B1 (ja) |
| CA (1) | CA2526268C (ja) |
| DE (1) | DE602004028618D1 (ja) |
| FR (1) | FR2855186B1 (ja) |
| MX (1) | MXPA05012492A (ja) |
| NO (1) | NO341920B1 (ja) |
| WO (1) | WO2004104252A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11479828B2 (en) | 2017-12-29 | 2022-10-25 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
| US11932913B2 (en) | 2017-12-29 | 2024-03-19 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2997962B1 (fr) | 2012-11-14 | 2015-04-10 | Ferropem | Alliage inoculant pour pieces epaisses en fonte |
| CN103484749B (zh) * | 2013-09-02 | 2015-08-12 | 宁波康发铸造有限公司 | 一种球墨铸铁孕育剂及其制备方法和在冶炼球墨铸铁中的应用 |
| CN105316562B (zh) * | 2014-08-04 | 2018-01-23 | 陆丰市东煊实业有限公司 | 一种使用稀土废料制备钢铁添加剂的方法 |
| NO20172065A1 (en) | 2017-12-29 | 2019-07-01 | Elkem Materials | Cast iron inoculant and method for production of cast iron inoculant |
| NO346252B1 (en) | 2017-12-29 | 2022-05-09 | Elkem Materials | Cast iron inoculant and method for production of cast iron inoculant |
| NO20172064A1 (en) | 2017-12-29 | 2019-07-01 | Elkem Materials | Cast iron inoculant and method for production of cast iron inoculant |
| CN111850222A (zh) * | 2020-03-09 | 2020-10-30 | 山东常林铸业有限公司 | 一种使用含锑孕育剂生产多路阀体铸件的新型熔炼工艺 |
| FR3141698A1 (fr) | 2022-11-09 | 2024-05-10 | Saint-Gobain PAM Bâtiment | Objet tubulaire en fonte à graphite lamellaire, élément de tuyauterie et procédé de fabrication correspondants |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2421948A1 (fr) * | 1978-04-06 | 1979-11-02 | Pro Chi Met Produits Chim Meta | Procede de preparation d'alliages ferreux sensiblement exempts de cerium, permettant d'ameliorer notamment leurs proprietes mecaniques grace a l'emploi de lanthane, et alliages ferreux obtenus par ce procede |
| JPS5735607A (en) * | 1980-08-11 | 1982-02-26 | Toshiba Corp | Inoculant for cast iron |
| FR2511044A1 (fr) * | 1981-08-04 | 1983-02-11 | Nobel Bozel | Ferro-alliage pour le traitement d'inoculation des fontes a graphite spheroidal |
| JPS5943843A (ja) * | 1982-09-06 | 1984-03-12 | Kusaka Reametaru Kenkyusho:Kk | 添加合金 |
| DE3409550C1 (de) * | 1984-03-15 | 1985-06-20 | Ingenieurbüro Dr.-Ing. Karl Ableidinger & Dr.-Ing. Hans Heyer, Zürich | Impflegierung zur Herstellung von sphaerolithischem Gusseisen |
| JPH0247213A (ja) * | 1988-08-09 | 1990-02-16 | Kimura Chuzosho:Kk | 鋳鉄用接種剤 |
| FR2635534B1 (fr) * | 1988-08-12 | 1992-04-03 | Pechiney Electrometallurgie | Procede d'obtention de fontes a graphite spheroidal |
| DE3924558C1 (ja) * | 1989-07-25 | 1990-11-22 | Skw Trostberg Ag, 8223 Trostberg, De | |
| DE4124159C2 (de) * | 1991-07-20 | 1996-08-14 | Sueddeutsche Kalkstickstoff | Vorlegierung zur Behandlung von Gußeisenschmelzen |
| JPH0880505A (ja) * | 1994-09-13 | 1996-03-26 | Mitsui Toatsu Chem Inc | 突板化粧板の製造方法 |
| FR2750143B1 (fr) * | 1996-06-25 | 1998-08-14 | Pechiney Electrometallurgie | Ferroalliage pour l'inoculation des fontes a graphite spheroidal |
| NO306169B1 (no) * | 1997-12-08 | 1999-09-27 | Elkem Materials | Ympemiddel for stöpejern og fremgangsmÕte for fremstilling av ympemiddel |
| NL1014394C2 (nl) * | 2000-02-16 | 2001-08-20 | Corus Technology B V | Werkwijze voor het vervaardigen van nodulair gietijzer, en gietstuk vervaardigd met deze werkwijze. |
| FR2839082B1 (fr) * | 2002-04-29 | 2004-06-04 | Pechiney Electrometallurgie | Alliage inoculant anti microretassure pour traitement des fontes de moulage |
-
2003
- 2003-05-20 FR FR0306033A patent/FR2855186B1/fr not_active Expired - Lifetime
-
2004
- 2004-05-13 US US10/555,786 patent/US7569092B2/en active Active
- 2004-05-13 CA CA2526268A patent/CA2526268C/fr not_active Expired - Lifetime
- 2004-05-13 KR KR1020057022257A patent/KR101145328B1/ko active IP Right Grant
- 2004-05-13 JP JP2006530348A patent/JP4680913B2/ja not_active Expired - Lifetime
- 2004-05-13 EP EP04742720A patent/EP1639145B1/fr not_active Expired - Lifetime
- 2004-05-13 BR BRPI0410414-5A patent/BRPI0410414B1/pt not_active IP Right Cessation
- 2004-05-13 AT AT04742720T patent/ATE477346T1/de not_active IP Right Cessation
- 2004-05-13 DE DE602004028618T patent/DE602004028618D1/de not_active Expired - Lifetime
- 2004-05-13 MX MXPA05012492A patent/MXPA05012492A/es unknown
- 2004-05-13 CN CNB2004800129642A patent/CN100408710C/zh not_active Expired - Fee Related
- 2004-05-13 WO PCT/FR2004/001167 patent/WO2004104252A1/fr active Search and Examination
- 2004-05-14 AR ARP040101668A patent/AR044351A1/es active IP Right Grant
-
2005
- 2005-12-19 NO NO20056038A patent/NO341920B1/no unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11479828B2 (en) | 2017-12-29 | 2022-10-25 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
| US11932913B2 (en) | 2017-12-29 | 2024-03-19 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2526268A1 (fr) | 2004-12-02 |
| CN100408710C (zh) | 2008-08-06 |
| FR2855186A1 (fr) | 2004-11-26 |
| AR044351A1 (es) | 2005-09-07 |
| EP1639145A1 (fr) | 2006-03-29 |
| NO341920B1 (no) | 2018-02-19 |
| ATE477346T1 (de) | 2010-08-15 |
| JP4680913B2 (ja) | 2011-05-11 |
| MXPA05012492A (es) | 2006-01-30 |
| US7569092B2 (en) | 2009-08-04 |
| WO2004104252A1 (fr) | 2004-12-02 |
| CA2526268C (fr) | 2011-07-12 |
| US20060113055A1 (en) | 2006-06-01 |
| BRPI0410414A (pt) | 2006-05-30 |
| CN1833041A (zh) | 2006-09-13 |
| FR2855186B1 (fr) | 2005-06-24 |
| KR20060009952A (ko) | 2006-02-01 |
| JP2007506000A (ja) | 2007-03-15 |
| DE602004028618D1 (de) | 2010-09-23 |
| NO20056038L (no) | 2005-12-19 |
| BRPI0410414B1 (pt) | 2012-12-11 |
| KR101145328B1 (ko) | 2012-05-14 |
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