EP0534850A1 - Heat-resistant cast iron with spheroidal graphite or with vermicular graphite - Google Patents
Heat-resistant cast iron with spheroidal graphite or with vermicular graphite Download PDFInfo
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- EP0534850A1 EP0534850A1 EP92402617A EP92402617A EP0534850A1 EP 0534850 A1 EP0534850 A1 EP 0534850A1 EP 92402617 A EP92402617 A EP 92402617A EP 92402617 A EP92402617 A EP 92402617A EP 0534850 A1 EP0534850 A1 EP 0534850A1
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- EP
- European Patent Office
- Prior art keywords
- cast iron
- spheroidal
- content
- graphite
- weight
- 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.)
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- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 15
- 239000010439 graphite Substances 0.000 title claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 17
- 229910052710 silicon Inorganic materials 0.000 description 17
- 239000010703 silicon Substances 0.000 description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 16
- 229910052759 nickel Inorganic materials 0.000 description 8
- 235000000396 iron Nutrition 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- 229910052758 niobium Inorganic materials 0.000 description 4
- 239000010955 niobium Substances 0.000 description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012809 post-inoculation Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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 present invention relates to a heat-resistant spheroidal or vermicular graphite cast iron.
- the invention relates to a spheroidal or vermicular graphite cast iron which has a high resistance to oxidation and which has high mechanical qualities for temperatures typically ranging from 900 ° C. to more than 1000 ° C.
- the fonts available in these temperature ranges are austenitic fonts with a high nickel content. Typically, this content ranges from 20 to 35% by weight for temperatures above 900 ° C. For temperatures above 1000 ° C, silicon must also be added.
- the disadvantage of such cast irons is that they require the use of large amounts of nickel. This material has the disadvantage on the one hand of being expensive and on the other hand of being considered as a strategic material, therefore with very large price fluctuations.
- An object of the present invention is to provide a cast iron which has mechanical resistance and oxidation resistance properties at least equal to those of known cast irons at high temperatures typically higher than 900 ° C. but whose production costs are lower than those of known spheroidal graphite cast iron which has a high nickel content.
- cast iron an alloy comprising at least 85% iron.
- heat-resistant spheroidal or vermicular graphite cast iron is characterized in that it comprises from 4.7% to 7.1% by weight of Si equivalent, the Si equivalent being defined.
- Sieq Si + 0.8Al in which the weight content of Si is between 3.9% and 5.3% and the weight content of Al is between 0.5% and 2.5%.
- the cast iron further comprises from 0.5 to 1.5% of molybdenum.
- the GS cast iron further comprises 0.5 to 1.5% of cobalt and / or 0.5 to 1.5 of niobium.
- the graphite will be spheroidal and / or vermicular depending on the massiveness of the parts.
- Such a cast iron has properties of mechanical resistance and resistance to oxidation at least equivalent to those obtained with known spheroidal graphite irons based on nickel. It is understood, however, that insofar as they are produced without nickel from silicon or aluminum, they are significantly lower in cost and their production is not dependent on the supply of basic material considered strategic.
- the invention is based on a control of the equivalent silicon content in the cast iron.
- the numerical coefficient of aluminum (0.8) is chosen by iterative calculation so that the point AC1 is an increasing linear function of the "silicon-equivalent”. This expression, confirmed by the experiments carried out, shows that the contribution of aluminum to what could be called the "refractoriness" of cast iron is equal to about 80% of that of silicon.
- the equivalent silicon content is as follows: 900 to 950 ° C : 4.7 to 6%; 950 to 1000 ° C : 6 to 6.7%; above 1000 ° C : greater than 6.7%.
- the maximum equivalent silicon content cannot be greater than 7.1% if the cast iron is not to be too brittle.
- the total silicon content is between 3.9 and 5.3% and the aluminum content is between 0.5 and 2.5%.
- the tests carried out have shown that the best results are obtained for an aluminum content by weight of between 1.6 and 2.2%.
- cast iron In a particular example of cast iron according to the invention, it has the following composition: silicon 4.9%, aluminum 2.2%, molybdenum 1%, cobalt 1%, niobium 1% and carbon 3.1%.
- Tests, in particular of resistance to oxidation, of the GS fonts according to the invention and in particular of that which has the composition given in the example mentioned above, show that the properties of use are at least equal, if not better than those obtained with grades of austenitic spheroidal graphite cast iron with a high nickel content.
- the oxidizability of the cast iron is considerably reduced and the alloy is kept ferritic up to high temperatures, typically above 1000 ° C.
- the introduction of low molybdenum, cobalt or niobium contents allows an increase in the mechanical properties when hot compared to the usual grades, in particular as regards hot creep.
- the appended table makes it possible to compare the properties of four pig iron compositions in accordance with the invention with a known pig iron composition comprising 35.35% of nickel, 3.05% of chromium and 3.1% of silicon.
- the cast irons according to the invention have mechanical properties greater than or equal to those of the nickel cast iron and that the properties of resistance to oxidation are appreciably improved.
- the oxidisability properties are maintained but the mechanical properties are very significantly improved.
- the oxidisability properties are considerably improved.
- the inoculation of the liquid metal should be sufficiently powerful, mainly in the case of the production of thin parts. For this, we will practice, when necessary, post-inoculation in the foundry mold.
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- 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)
- Mold Materials And Core Materials (AREA)
Abstract
Description
La présente invention a pour objet une fonte à graphite sphéroïdal ou vermiculaire résistant à la chaleur.The present invention relates to a heat-resistant spheroidal or vermicular graphite cast iron.
Plus précisément, l'invention concerne une fonte à graphite sphéroïdal ou vermiculaire qui possède une grande résistance à l'oxydation et qui présente des qualités mécaniques élevées pour des températures allant typiquement de 900°C à plus de 1000°C.More specifically, the invention relates to a spheroidal or vermicular graphite cast iron which has a high resistance to oxidation and which has high mechanical qualities for temperatures typically ranging from 900 ° C. to more than 1000 ° C.
Les développements de certaines techniques imposent de disposer de fontes ou plus généralement de matériaux capables de conserver notamment leurs qualités mécaniques et leurs qualités de résistance à l'oxydation pour des températures de plus en plus élevées, notamment supérieures à 900°C.Developments in certain techniques make it necessary to have available cast irons or, more generally, materials capable of retaining in particular their mechanical qualities and their qualities of resistance to oxidation at increasingly high temperatures, in particular above 900 ° C.
C'est en particulier le cas dans le domaine de l'industrie automobile avec l'augmentation des performances des moteurs de véhicules automobiles qui entraine elle-même l'augmentation des conditions, notamment de températures, que doivent pouvoir supporter les organes moteurs. En particulier, certaines pièces des moteurs tels que les collecteurs d'échappement et les carters turbos sont soumis à des sollicitations thermiques et mécaniques de plus en plus élevées, qu'il s'agisse des températures maximales, des gradients thermiques, des chocs thermiques, des contraintes mécaniques, de la fatigue à chaud ou de la fatigue thermique.This is particularly the case in the automotive industry with the increase in the performance of motor vehicle engines which itself leads to an increase in the conditions, in particular of temperatures, which the engine members must be able to withstand. In particular, certain parts of engines such as exhaust manifolds and turbochargers are subjected to increasingly high thermal and mechanical stresses, whether these are maximum temperatures, thermal gradients, thermal shocks, mechanical stress, hot fatigue or thermal fatigue.
Actuellement, les fontes disponibles dans ces gammes de température sont des fontes austénitiques présentant une teneur élevée en nickel. Typiquement, cette teneur va de 20 à 35% en poids pour les températures supérieures à 900°C. Pour les températures supérieures à 1000°C, il faut de plus ajouter du silicium. L'inconvénient de telles fontes est qu'elles font appel à l'utilisation de quantités importantes de nickel. Ce matériau présente l'inconvénient d'une part d'être cher et d'autre part d'être considéré comme un matériau stratégique, donc avec des fluctuations de cours très importantes.Currently, the fonts available in these temperature ranges are austenitic fonts with a high nickel content. Typically, this content ranges from 20 to 35% by weight for temperatures above 900 ° C. For temperatures above 1000 ° C, silicon must also be added. The disadvantage of such cast irons is that they require the use of large amounts of nickel. This material has the disadvantage on the one hand of being expensive and on the other hand of being considered as a strategic material, therefore with very large price fluctuations.
En outre, on sait que dans le domaine de la construction automobile, les contraintes économiques liées à la concurrence sont de plus en plus sévères et il est donc particulièrement intéressant de pouvoir disposer de matériaux de construction qui soient d'un coût réduit tout en satisfaisant aux conditions sévères d'utilisation.In addition, it is known that in the field of automobile construction, the economic constraints linked to competition are increasingly severe and it is therefore particularly advantageous to be able to have construction materials which are of reduced cost while satisfying under severe conditions of use.
Un objet de la présente invention est de fournir une fonte qui présente des propriétés de résistance mécanique et de résistance à l'oxydation au moins égales à celles des fontes connues à des températures élevées typiquement supérieures à 900°C mais dont les coûts de production sont inférieurs à ceux des fontes connues à graphite sphéroïdal qui présente une teneur élevée en nickel.An object of the present invention is to provide a cast iron which has mechanical resistance and oxidation resistance properties at least equal to those of known cast irons at high temperatures typically higher than 900 ° C. but whose production costs are lower than those of known spheroidal graphite cast iron which has a high nickel content.
Dans le présent texte, par fonte, il faut entendre un alliage comprenant au moins 85% de fer.In the present text, by cast iron is meant an alloy comprising at least 85% iron.
Pour atteindre ce but, selon l'invention, la fonte à graphite sphéroïdal ou vermiculaire résistant à la chaleur se caractérise en ce qu'elle comprend de 4,7% à 7,1% en poids de Si équivalent, le Si équivalent étant défini par Sieq = Si+0,8Al dans lequel la teneur pondérale en Si est comprise entre 3,9% et 5,3% et la teneur pondérale en Al est comprise entre 0,5% et 2,5%.To achieve this object, according to the invention, heat-resistant spheroidal or vermicular graphite cast iron is characterized in that it comprises from 4.7% to 7.1% by weight of Si equivalent, the Si equivalent being defined. by Sieq = Si + 0.8Al in which the weight content of Si is between 3.9% and 5.3% and the weight content of Al is between 0.5% and 2.5%.
Selon un mode préféré de mise en oeuvre, la fonte comporte en outre de 0,5 à 1,5% de molybdène.According to a preferred embodiment, the cast iron further comprises from 0.5 to 1.5% of molybdenum.
Selon un autre mode préféré de mise en oeuvre, la fonte GS comporte en outre 0,5 à 1,5% de cobalt et/ou 0,5 à 1,5 de niobium.According to another preferred embodiment, the GS cast iron further comprises 0.5 to 1.5% of cobalt and / or 0.5 to 1.5 of niobium.
Etant donnée la composition, selon l'invention, de cette fonte, le graphite sera sphéroïdal et/ou vermiculaire selon la massiveté des pièces.Given the composition, according to the invention, of this cast iron, the graphite will be spheroidal and / or vermicular depending on the massiveness of the parts.
Une telle fonte présente des propriétés de résistance mécanique et de résistance à l'oxydation au moins équivalentes à celles qu'on obtient avec les fontes à graphite sphéroïdal connues à base de nickel. On comprend cependant que dans la mesure où elles sont élaborées sans nickel à partir de silicium ou d'aluminium, elles sont d'un coût sensiblement plus réduit et leur réalisation n'est pas tributaire de l'approvisionnement en matériau de base considéré comme stratégique.Such a cast iron has properties of mechanical resistance and resistance to oxidation at least equivalent to those obtained with known spheroidal graphite irons based on nickel. It is understood, however, that insofar as they are produced without nickel from silicon or aluminum, they are significantly lower in cost and their production is not dependent on the supply of basic material considered strategic.
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description qui suit de plusieurs modes de mise en oeuvre de l'invention donnes à titre d'exemples non limitatifs.Other characteristics and advantages of the invention will appear more clearly on reading the following description of several embodiments of the invention given by way of non-limiting examples.
Comme on l'a déjà indiqué, l'invention est basée sur un contrôle de la teneur en silicium équivalent dans la fonte. Le silicium équivalent est défini par la relation Sieq = Si + 0,8Al. Cette définition a été établie empiriquement. Le coefficient numérique de l'aluminium (0,8) est choisi par calcul itératif de façon à ce que le point AC1 soit une fonction linaire croissante du "silicium-équivalent". Cette expression confirmée par les expérimentations faites permet de constater que la contribution de l'aluminium à ce que l'on pourrait appeler la "réfractairité" de la fonte, est égale à environ 80% de celle du silicium. Selon la température de fonctionnement ou d'utilisation de la pièce réalisée en fonte, la teneur en silicium équivalent est la suivante :
Toutefois, la teneur maximale en silicium équivalent ne peut être supérieure à 7,1% si on ne veut pas conférer à la fonte un caractère de fragilité trop important.However, the maximum equivalent silicon content cannot be greater than 7.1% if the cast iron is not to be too brittle.
En outre, dans les fourchettes indiquées précédemment, la teneur totale en silicium est comprise entre 3,9 et 5,3% et la teneur en aluminium est comprise entre 0,5 et 2,5%.
Les essais effectués ont montré qu'on obtenait les meilleurs résultats pour une teneur pondérale en aluminium comprise entre 1,6 et 2,2%.In addition, in the ranges indicated above, the total silicon content is between 3.9 and 5.3% and the aluminum content is between 0.5 and 2.5%.
The tests carried out have shown that the best results are obtained for an aluminum content by weight of between 1.6 and 2.2%.
On comprend que la présence d'aluminium renforce l'action du silicium sur la stabilité structurale de la fonte et sur le caractère d'inoxydabilité du matériau obtenu. On comprend en particulier qu'en limitant la teneur en silicium, on évite les effets nocifs d'une trop grande quantité de silicium qui entraîne en particulier une fragilisation de l'alliage à la température ambiante.It is understood that the presence of aluminum reinforces the action of silicon on the structural stability of the cast iron and on the character of oxidizability of the material obtained. We understand in particular that by limiting the silicon content, the harmful effects of too much silicon are avoided, which in particular leads to embrittlement of the alloy at room temperature.
En outre, et selon l'utilisation que l'on veut faire de la fonte, et donc selon les caractéristiques particulières que l'on souhaite obtenir pour celle-ci, on peut ajouter d'autres éléments d'alliage notamment du molybdène, du cobalt ou du niobium dans des teneurs comprises entre 0,5% et 1,5%. Il faut également préciser que la teneur en carbone est telle que la teneur pondérale en carbone équivalent soit de l'ordre de 4,3 à 4,8%.In addition, and depending on the use that we want to make of cast iron, and therefore according to the particular characteristics that we want to obtain for it, we can add other alloying elements including molybdenum, cobalt or niobium in contents between 0.5% and 1.5%. It should also be noted that the carbon content is such that the equivalent carbon content by weight is of the order of 4.3 to 4.8%.
On sait que le carbone équivalent est défini par la teneur en carbone pur augmentée d'un tiers de la teneur en silicium augmentée en outre de la teneur en aluminium multipliée par un coefficient de 0,16. On voit donc que la teneur en carbone sera réglée à partir de la teneur choisie en silicium comme on l'a déjà expliqué précédemment.It is known that equivalent carbon is defined by the pure carbon content increased by a third of the silicon content increased further by the aluminum content multiplied by a coefficient of 0.16. It can therefore be seen that the carbon content will be adjusted on the basis of the chosen silicon content as already explained above.
Dans un exemple particulier de fonte selon l'invention, celle-ci a la composition suivante : silicium 4,9%, aluminium 2,2%, molybdène 1%, cobalt 1%, niobium 1% et carbone 3,1%.In a particular example of cast iron according to the invention, it has the following composition: silicon 4.9%, aluminum 2.2%, molybdenum 1%, cobalt 1%, niobium 1% and carbon 3.1%.
Les essais, notamment de tenue en oxydation, des fontes GS selon l'invention et en particulier de celle qui a la composition donnée dans l'exemple mentionné ci-dessus, montrent que les propriétés d'utilisation sont au moins égales, sinon meilleures que celles qu'on obtient avec des nuances de fonte à graphite sphéroïdal austénitique à forte teneur en nickel. En particulier, pour les teneurs de silicium et d'aluminium mentionnées ci-dessus, on réduit considérablement l'oxydabilité de la fonte et l'alliage est maintenu ferritique jusqu'à de hautes températures, typiquement au-dessus de 1000°C. Enfin, l'introduction de faibles teneurs en molybdène, en cobalt ou en niobium selon les utilisations envisagées permet un accroissement des propriétés mécaniques à chaud par rapport aux nuances habituelles, notamment en ce qui concerne le fluage à chaud.Tests, in particular of resistance to oxidation, of the GS fonts according to the invention and in particular of that which has the composition given in the example mentioned above, show that the properties of use are at least equal, if not better than those obtained with grades of austenitic spheroidal graphite cast iron with a high nickel content. In particular, for the silicon and aluminum contents mentioned above, the oxidizability of the cast iron is considerably reduced and the alloy is kept ferritic up to high temperatures, typically above 1000 ° C. Finally, the introduction of low molybdenum, cobalt or niobium contents according to the envisaged uses allows an increase in the mechanical properties when hot compared to the usual grades, in particular as regards hot creep.
Le tableau annexé permet de comparer les propriétés de quatre compositions de fonte conformes à l'invention avec une composition connue de fonte comportant 35,35% de nickel, 3,05% de chrome et 3,1% de silicium.The appended table makes it possible to compare the properties of four pig iron compositions in accordance with the invention with a known pig iron composition comprising 35.35% of nickel, 3.05% of chromium and 3.1% of silicon.
On voit que les fontes selon l'invention ont des propriétés mécaniques supérieures ou égales à celles de la fonteau nickel et que les propriétés de résistance à l'oxydation sont sensiblement améliorées. Dans le cas de la fonte à 4,45% de silicium et 1,65% d'aluminium les propriétés d'inoxydabilité sont maintenues mais les propriétés mécaniques sont très sensiblement améliorées. Pour les fontes présentant une teneur en aluminium égale ou supérieure à 1,8%, les propriétés d'inoxydabilité sont considérablements améliorées.It can be seen that the cast irons according to the invention have mechanical properties greater than or equal to those of the nickel cast iron and that the properties of resistance to oxidation are appreciably improved. In the case of cast iron with 4.45% silicon and 1.65% aluminum, the oxidisability properties are maintained but the mechanical properties are very significantly improved. For cast irons with an aluminum content of 1.8% or more, the oxidisability properties are considerably improved.
Pour l'élaboration des fontes selon l'invention, les techniques couramment mises en oeuvre peuvent être utilisées. Il y a seulement lieu d'introduire l'aluminium le plus tard possible, ce qui ne soulève aucun problème particulier compte tenu de sa température de point de fusion réduite de l'ordre de 800°C.For the development of the fonts according to the invention, the techniques commonly used can be used. It is only necessary to introduce the aluminum as late as possible, which does not raise any particular problem given its reduced melting point temperature of the order of 800 ° C.
L'élaboration du matériau proposé devra faire appel à des techniques limitant au maximum l'entraînement dans les pièces d'inclusions non métalliques. Au-delà d'un décrassage particulièrement soigné, on utilisera, si nécessaire, des procédés d'inertage et de filtration.The development of the proposed material will have to use techniques limiting as much as possible the entrainment in non-metallic inclusion pieces. In addition to particularly careful scrubbing, inerting and filtration processes will be used, if necessary.
L'inoculation du métal liquide devra être suffisamment puissante, principalement dans le cas de l'élaboration de pièces minces. Pour cela, on pratiquera, quand ce sera nécessaire, la post-inoculation dans le moule de fonderie.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9111875A FR2681878B1 (en) | 1991-09-26 | 1991-09-26 | HEAT RESISTANT SPHEROUIDAL GRAPHITE CAST IRON. |
| FR9111875 | 1991-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0534850A1 true EP0534850A1 (en) | 1993-03-31 |
| EP0534850B1 EP0534850B1 (en) | 1996-08-07 |
Family
ID=9417329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92402617A Expired - Lifetime EP0534850B1 (en) | 1991-09-26 | 1992-09-24 | Heat-resistant cast iron with spheroidal graphite or with vermicular graphite |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5236660A (en) |
| EP (1) | EP0534850B1 (en) |
| CA (1) | CA2078737C (en) |
| DE (1) | DE69212628T2 (en) |
| ES (1) | ES2090547T3 (en) |
| FR (1) | FR2681878B1 (en) |
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| EP0892078A1 (en) * | 1997-07-18 | 1999-01-20 | Didier-M & P Energietechnik GmbH | Grating for a recuperator |
| EP1386976A1 (en) * | 2002-07-24 | 2004-02-04 | Georg Fischer Fahrzeugtechnik AG | Cast iron |
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| FR2961725A1 (en) * | 2010-06-29 | 2011-12-30 | Peugeot Citroen Automobiles Sa | Lost wax casting of a piece made of metal ferrous alloy, comprises producing a fuse model from a first part of the piece and a second part corresponding to a supply channel of the first part, and positioning the fuse model in tank of sand |
| EP2924138A1 (en) * | 2014-03-26 | 2015-09-30 | Georg Fischer Eisenguss GmbH | Cast iron alloy |
| CN110284051A (en) * | 2019-05-10 | 2019-09-27 | 芜湖泓鹄材料技术有限公司 | A kind of high intensity drawing die material and drawing die production method |
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| EP1808504A1 (en) * | 2006-01-16 | 2007-07-18 | Siemens Aktiengesellschaft | Cast iron containing cobalt for use in steam turbines |
| US8333923B2 (en) * | 2007-02-28 | 2012-12-18 | Caterpillar Inc. | High strength gray cast iron |
| CN102094147B (en) * | 2011-03-24 | 2012-03-21 | 河北工业大学 | Control method for producing low temperature spheroidal graphite cast iron |
| DE102012217892A1 (en) * | 2012-10-01 | 2014-05-15 | Siemens Aktiengesellschaft | Cast iron with niobium and component |
| WO2017111720A1 (en) * | 2015-12-25 | 2017-06-29 | Ford Otomotiv Sanayi Anonim Sirketi | Cast iron alloy provided with improved mechanical and thermal properties |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB323076A (en) * | 1928-10-26 | 1929-12-24 | British Cast Iron Res Ass | Improvements relating to cast iron |
| DE869494C (en) * | 1951-01-19 | 1953-03-05 | Eisengiesserei | Cast iron for objects that have to have high heat and growth resistance, low wall thickness sensitivity, good machinability and usual strength at the same time |
| US2885285A (en) * | 1957-08-22 | 1959-05-05 | Allis Chalmers Mfg Co | Alloyed nodular iron |
| SU241682A1 (en) * | 1968-01-18 | 1969-04-18 | Е. И. Сумин Завод Я. М. Свердлова | MAGNETIC SOFT IRON |
-
1991
- 1991-09-26 FR FR9111875A patent/FR2681878B1/en not_active Expired - Fee Related
-
1992
- 1992-09-21 CA CA002078737A patent/CA2078737C/en not_active Expired - Fee Related
- 1992-09-23 US US07/948,572 patent/US5236660A/en not_active Expired - Lifetime
- 1992-09-24 ES ES92402617T patent/ES2090547T3/en not_active Expired - Lifetime
- 1992-09-24 DE DE69212628T patent/DE69212628T2/en not_active Expired - Fee Related
- 1992-09-24 EP EP92402617A patent/EP0534850B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB323076A (en) * | 1928-10-26 | 1929-12-24 | British Cast Iron Res Ass | Improvements relating to cast iron |
| DE869494C (en) * | 1951-01-19 | 1953-03-05 | Eisengiesserei | Cast iron for objects that have to have high heat and growth resistance, low wall thickness sensitivity, good machinability and usual strength at the same time |
| US2885285A (en) * | 1957-08-22 | 1959-05-05 | Allis Chalmers Mfg Co | Alloyed nodular iron |
| SU241682A1 (en) * | 1968-01-18 | 1969-04-18 | Е. И. Сумин Завод Я. М. Свердлова | MAGNETIC SOFT IRON |
Non-Patent Citations (1)
| Title |
|---|
| PIWOWARSKY 'HOCHWERTIGES GUSZEISEN (GRAUGUSZ)' 1958 , SPRINGER-VERLAG, BERLIN/GöTTINGEN/HEIDELBERG * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0892078A1 (en) * | 1997-07-18 | 1999-01-20 | Didier-M & P Energietechnik GmbH | Grating for a recuperator |
| EP1386976A1 (en) * | 2002-07-24 | 2004-02-04 | Georg Fischer Fahrzeugtechnik AG | Cast iron |
| CN1477223B (en) * | 2002-07-24 | 2011-06-22 | 乔治费希尔汽车技术有限公司 | Cast-iron alloy |
| FR2961725A1 (en) * | 2010-06-29 | 2011-12-30 | Peugeot Citroen Automobiles Sa | Lost wax casting of a piece made of metal ferrous alloy, comprises producing a fuse model from a first part of the piece and a second part corresponding to a supply channel of the first part, and positioning the fuse model in tank of sand |
| CN101967599A (en) * | 2010-09-13 | 2011-02-09 | 河南省中原内配股份有限公司 | Vermiculizer for producing vermicular cast iron cylinder sleeve by centrifugal casting and preparation method thereof |
| CN101967599B (en) * | 2010-09-13 | 2012-12-05 | 河南省中原内配股份有限公司 | Vermiculizer for producing vermicular cast iron cylinder sleeve by centrifugal casting and preparation method thereof |
| EP2924138A1 (en) * | 2014-03-26 | 2015-09-30 | Georg Fischer Eisenguss GmbH | Cast iron alloy |
| CN110284051A (en) * | 2019-05-10 | 2019-09-27 | 芜湖泓鹄材料技术有限公司 | A kind of high intensity drawing die material and drawing die production method |
Also Published As
| Publication number | Publication date |
|---|---|
| US5236660A (en) | 1993-08-17 |
| FR2681878A1 (en) | 1993-04-02 |
| CA2078737C (en) | 1995-12-12 |
| EP0534850B1 (en) | 1996-08-07 |
| FR2681878B1 (en) | 1993-12-31 |
| ES2090547T3 (en) | 1996-10-16 |
| CA2078737A1 (en) | 1993-03-27 |
| DE69212628T2 (en) | 1997-01-02 |
| DE69212628D1 (en) | 1996-09-12 |
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