EP1270747A2 - Spheroidal graphite cast iron with addition of boron - Google Patents

Spheroidal graphite cast iron with addition of boron Download PDF

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Publication number
EP1270747A2
EP1270747A2 EP02006104A EP02006104A EP1270747A2 EP 1270747 A2 EP1270747 A2 EP 1270747A2 EP 02006104 A EP02006104 A EP 02006104A EP 02006104 A EP02006104 A EP 02006104A EP 1270747 A2 EP1270747 A2 EP 1270747A2
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Prior art keywords
cast iron
products
alloy
ductile
iron alloy
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EP02006104A
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German (de)
French (fr)
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EP1270747B1 (en
EP1270747A3 (en
Inventor
Werner Menk
Dirk Lindemann
Dirk Richarz
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Georg Fischer Fahrzeugtechnik AG
Georg Fischer Automotive AG
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Georg Fischer Fahrzeugtechnik AG
Georg Fischer Automotive AG
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Priority to CY20061101779T priority Critical patent/CY1107543T1/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/04—Cast-iron alloys containing spheroidal graphite
    • 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
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D5/00—Heat treatments of cast-iron
    • C21D5/02—Heat treatments of cast-iron improving the malleability of grey cast-iron
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/30—Stress-relieving
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like

Definitions

  • the invention relates to a nodular cast iron alloy for cast iron products with plastic ductility, the ductile iron alloy being non-iron components at least the elements C, Si, Mn, Cu, Mg, S and as Additions of one or more elements from Group IIIb of the Periodic table contains.
  • motor vehicle ductile iron alloys are used for the Production of castings that have to withstand high impact loads For example, wishbone, as parts of the suspension of the driven Wheels that need to remain intact even after an accident.
  • the castings may be deformed in the so-called crash test, but not break.
  • Commercially available gray cast alloys tend to break when strong Blows are exposed.
  • a process for the production of ductile iron alloys with product inclusions is known, which are plastically deformed during the machining of the products produced.
  • the plastically deformable inclusions serve as a lubricant during machining.
  • the inclusions consist of about 50% SiO 2 , 25% CaO, 15% MgO and 10% Al 2 O 3 .
  • the base alloy is made low in sulfur and deoxygenated with a reagent containing CaC 2 , CaO, Ca, Al and Mg prior to the actual treatment with magnesium. A metal analysis of the products thus produced is not disclosed.
  • a nodular cast iron alloy for Cast iron products having a plastic deformability, wherein the Ductile cast iron alloy as non-iron constituents at least the elements C, Si, Mn, Cu, Mg, S and as admixtures one or more elements of the Group IIIb of the periodic table, wherein the alloy as an admixture contains at least the element boron and wherein the Si content is more than 2.4% is.
  • the Perlitanteil reduced in the structure of cast iron products and that a ferritic structure can be guaranteed. This will achieved in that the alloy contains 2 to 200 ppm of boron as an admixture.
  • the gist of the invention is to provide a cast iron alloy which is particularly suitable for load-bearing parts, such as the suspension in the automotive industry.
  • the load-bearing parts must not break, but only deform.
  • the deformation should not be elastic but plastic.
  • the Deformability of the parts should be plastic and should be as large as possible do not lead to breakage of the parts and should not be reversible.
  • GJS ductile iron
  • the graphite formation in the microstructure is, measured according to the standard DIN EN ISO 945, more than 90% Form VI, and the size of the graphite spheres in the microstructure is in the classes 7-8.
  • composition and properties of the casting are compared with a conventional spheroidal cast alloy called GJS-400-15.
  • This composition can be determined by the measurement results of a instrumented impact test are shown. This impact test is performed as a simulation for the wheel suspension abuse test Passenger car.
  • diagram 1 on the right side the measurement results of the Impact tests on a wishbone of a passenger car shown.
  • Comparative values are also the measurement results in diagram 1 on the left side of an identical casting, made of commercially available nodular cast iron was produced. From diagram 1 it can be seen that the whole Energy absorption in the control arm during impact test is more than 2200 J. From Diagram 1 it can also be seen that the deformation value in Impact test more than 75% higher than in a comparable castings a conventional nodular cast iron alloy. The deformation of the control arm, expressed in mm, measured as the difference between two measuring points on Casting, before and after the impact test, is more than 15 mm. at comparable castings from a conventional nodular cast iron alloy this deformation is usually less than 9 mm. The maximum force of the Wishbone is added, is between 3000 and 3500 kN. This here instrumented impact test is performed on a Rosand impact tester.
  • Wishbone for a passenger car which from the inventive Pig iron alloy with at least 2.4% Si content and at least that Element boron can be produced as an admixture, and when casting a be subjected to as gentle as possible surface treatment, draw characterized by a high plastic non-reversible deformability.
  • the bearing parts of the suspension of an automobile break during the crash test, which simulates a particular accident situation, not and remain intact.
  • the present cast alloy is also suitable for all other vehicle parts that may deform under extreme loads, but may not break.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Vehicle Body Suspensions (AREA)
  • Body Structure For Vehicles (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Valve Housings (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Forging (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Spheroidal graphite iron contains C, Si, Mn, Cu, Mg and S as non-ferrous component; and one or more elements selected from group IIIb elements as addition. An Independent claim is also included for a process for the production of a cast iron product from the spheroidal graphite iron. Preferred Features: The Si content is 2.6-2.9 %. The alloy contains 2-200 ppm B as addition.

Description

Die Erfindung bezieht sich auf eine Sphärogusslegierung für Gusseisenprodukte mit einer plastischen Verformbarkeit, wobei die Sphärogusslegierung als Nicht-Eisenbestandteile zumindest die Elemente C, Si, Mn, Cu, Mg, S und als Beimengungen eines oder mehre Elemente aus der Gruppe IIIb des Periodensystems enthält.The invention relates to a nodular cast iron alloy for cast iron products with plastic ductility, the ductile iron alloy being non-iron components at least the elements C, Si, Mn, Cu, Mg, S and as Additions of one or more elements from Group IIIb of the Periodic table contains.

Im Kraftfahrzeugbau werden Sphärogusslegierungen verwendet für die Herstellung von Gussteilen, die eine hohe Schlagbelastung aushalten müssen, beispielsweise Querlenker, als Teile der Radaufhängung der angetriebenen Räder, die auch nach einem Unfall noch intakt bleiben müssen. Die Gussteile dürfen beim sogenannten Crash-test zwar verformt werden, aber nicht brechen. Handelsübliche Graugusslegierungen neigen zum Bruch, wenn sie starken Schlägen ausgesetzt werden.In motor vehicle ductile iron alloys are used for the Production of castings that have to withstand high impact loads For example, wishbone, as parts of the suspension of the driven Wheels that need to remain intact even after an accident. The castings may be deformed in the so-called crash test, but not break. Commercially available gray cast alloys tend to break when strong Blows are exposed.

Aus der WO 99 45 156 A1 ist ein Verfahren zur Herstellung von Sphärogusslegierungen mit Produkteinschlüssen bekannt, die bei der maschinellen Bearbeitung der hergestellten Produkte plastisch verformt werden. Die plastisch verformbaren Einschlüsse dienen als Schmiermittel bei der spanabhebenden Bearbeitung. Die Einschlüsse bestehen aus etwa 50% SiO2, 25% CaO, 15% MgO und 10% Al2O3. Die Basislegierung wird vor der eigentlichen Behandlung mit Magnesium schwefelarm und sauerstoffarm gemacht mit einem Reagens, das CaC2, CaO, Ca, Al und Mg enthält. Eine Metallanalyse der so hergestellten Produkte wird nicht offenbart.From WO 99 45 156 A1 a process for the production of ductile iron alloys with product inclusions is known, which are plastically deformed during the machining of the products produced. The plastically deformable inclusions serve as a lubricant during machining. The inclusions consist of about 50% SiO 2 , 25% CaO, 15% MgO and 10% Al 2 O 3 . The base alloy is made low in sulfur and deoxygenated with a reagent containing CaC 2 , CaO, Ca, Al and Mg prior to the actual treatment with magnesium. A metal analysis of the products thus produced is not disclosed.

Ausgehend von diesem Stand der Technik ist es Aufgabe der Erfindung, eine Sphärogusslegierung für Gusseisenprodukte mit einer plastischen Verformbarkeit anzugeben, die auch bei einer hohen Schlagbeanspruchung wesentlich höher ist als bei handelsüblichen Sphärogusslegierungen. Based on this prior art, it is an object of the invention, a Ductile cast iron alloy for cast iron products with plastic ductility indicate that is much higher even at high impact stress as with commercially available nodular cast iron alloys.

Diese Aufgabe wird gelöst durch eine Sphärogusslegierung für Gusseisenprodukte mit einer plastischen Verformbarkeit, wobei die Sphärogusslegierung als Nicht-Eisenbestandteile zumindest die Elemente C, Si, Mn, Cu, Mg, S und als Beimengungen eines oder mehrere Elemente aus der Gruppe IIIb des Periodensystems enthält, wobei die Legierung als Beimengung zumindest das Element Bor enthält und wobei der Si-Gehalt mehr als 2,4 % beträgt.This object is achieved by a nodular cast iron alloy for Cast iron products having a plastic deformability, wherein the Ductile cast iron alloy as non-iron constituents at least the elements C, Si, Mn, Cu, Mg, S and as admixtures one or more elements of the Group IIIb of the periodic table, wherein the alloy as an admixture contains at least the element boron and wherein the Si content is more than 2.4% is.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.Preferred developments of the invention will become apparent from the dependent Claims.

Es ist von Vorteil, dass der Perlitanteil im Gefüge der Gusseisenprodukte reduziert wird und dass ein ferritisches Gefüge gewährleistet werden kann. Dies wird dadurch erreicht, dass die Legierung als Beimengung 2 bis 200 ppm Bor enthält.It is advantageous that the Perlitanteil reduced in the structure of cast iron products and that a ferritic structure can be guaranteed. this will achieved in that the alloy contains 2 to 200 ppm of boron as an admixture.

Es ist auch von Vorteil, dass im Gefüge der Gusseisenprodukte eine Verfestigung der Mischkristalle gewährleistet werden kann. Dies wird dadurch erreicht, dass der Si-Gehalt 2,6 bis 2,9 % beträgt.It is also advantageous that in the structure of the cast iron products a solidification the mixed crystals can be guaranteed. This is achieved by the fact that the Si content is 2.6 to 2.9%.

Es ist auch von Vorteil, dass bei der Nachbehandlung der Oberflächen der Gusseisenprodukte möglichst wenig Eigenspannung in den Gusseisenprodukten erzeugt werden. Dies wird dadurch erreicht, dass die Gusseisenprodukte nach dem Giessverfahren einer Nachbehandlung unterworfen werden, die besonders schonend ist für die Produktoberflächen. Dies wird auch dadurch erreicht, dass die schonende Nachbehandlung der Oberflächen ein spannungsarmes Anglühen und bzw. oder ein Strahlen mit schwach abrasiven Partikeln umfasst. Durch die Nachbehandlung der Oberflächen, die üblicherweise in dem Verfahrensabschnitt des sogenannten Gussputzens nach dem Auspacken der Gussteile aus der Giessform und nach dem Abkühlen stattfindet, können Eigenspannungen im Gussteil aufgebaut werden, die später einen Bruch des Gussteiles auslösen können. Durch eine möglichst schonende Oberflächenbehandlung wird möglichst wenig Eigenspannung im Gussteil aufgebaut und wird die Gefahr eines Bruches erheblich reduziert.It is also advantageous that during the aftertreatment of the surfaces of the Cast iron products as little residual stress in the cast iron products be generated. This is achieved by refining the cast iron products be subjected to the casting a post-treatment, the particular is gentle on the product surfaces. This is also achieved by the fact that gentle after - treatment of the surfaces a low - tension annealing and or or a blasting with weakly abrasive particles. By the Post-treatment of the surfaces usually in the process section the so-called cast brushing after unpacking the castings from the Casting and after cooling takes place, residual stresses in the Cast are built, which later trigger a fracture of the casting can. As gentle a surface treatment as possible built up little residual stress in the casting and is the risk of breakage considerably reduced.

Der Kerngedanke der Erfindung ist es, eine Gusseisenlegierung anzugeben, die besonders geeignet ist für tragende Teile, beispielsweise für die Radaufhängung in der Automobilindustrie. Die tragende Teile dürfen nicht brechen, sondern lediglich verformen. Die Verformung soll nicht elastisch sondern plastisch sein. Die Verformbarkeit der Teile soll plastisch sein und so gross, wie möglich sein, soll nicht bis zum Bruch der Teile führen und soll nicht reversibel sein.The gist of the invention is to provide a cast iron alloy which is particularly suitable for load-bearing parts, such as the suspension in the automotive industry. The load-bearing parts must not break, but only deform. The deformation should not be elastic but plastic. The Deformability of the parts should be plastic and should be as large as possible do not lead to breakage of the parts and should not be reversible.

Beispiel 1example 1

Ein Querlenker für eine Radaufhängung eines Vorderrades eines Personenkraftwagens aus Sphäroguss (GJS) mit der folgenden chemischen Zusammensetzung: 3,5 % C, 2,7 % Si, 0,16 % Mn, 0,06 % Cu, 0,043 % Mg, 0,002 % S, 200 ppm Summe der Elemente aus der Gruppe IIIb des Periodensystemes (B, Al, Ga, In, TI), weist ein Gefüge auf mit maximal 15% Perlit.A wishbone for a suspension of a front wheel of a Passenger car made of ductile iron (GJS) with the following chemical Composition: 3.5% C, 2.7% Si, 0.16% Mn, 0.06% Cu, 0.043% Mg, 0.002% S, 200 ppm sum of elements from group IIIb of Periodic table (B, Al, Ga, In, TI), has a structure with a maximum of 15% perlite.

Die Graphitausbildung im Gefüge beträgt, gemessen nach der Norm DIN EN ISO 945, mehr als 90 % Form VI, und die Grösse der Graphitkugeln im Gefüge liegt in den Klassen 7-8.The graphite formation in the microstructure is, measured according to the standard DIN EN ISO 945, more than 90% Form VI, and the size of the graphite spheres in the microstructure is in the classes 7-8.

Die mechanischen Eigenschaften dieses Gussteiles werden angegeben mit Rp0.2 mindestens 250 N/mm2 , Rm mindestens 400 N/mm2 und A mindestens 15,0 %.The mechanical properties of this casting are given with R p0.2 at least 250 N / mm 2 , R m at least 400 N / mm 2 and A at least 15.0%.

Die Zusammensetzung und die, Eigenschaften des Gussteiles werden verglichen mit einer konventionellen Spharogusslegierung mit der Bezeichnung GJS-400-15.The composition and properties of the casting are compared with a conventional spheroidal cast alloy called GJS-400-15.

Die Wirksamkeit dieser Zusammensetzung kann anhand der Messresultate eines instrumentierten Schlagversuches dargestellt werden. Dieser Schlagversuch wird durchgeführt als eine Simulation für den Missbrauchstest der Radaufhängung des Personenkraftwagens.The effectiveness of this composition can be determined by the measurement results of a instrumented impact test are shown. This impact test is performed as a simulation for the wheel suspension abuse test Passenger car.

Hierbei wird untersucht, ob die Radaufhängung den Personenwagen nach einem Zusammenstoss noch soweit trägt, dass der Personenwagen in die nächste Werkstatt gefahren werden kann. Hier muss dann das tragende Teil der Radaufhängung, beispielsweise der Querlenker, der durch den Zusammenstoss dauerhaft und irreversibel verformt wurde, jedoch noch bruchsicher und tragfähig ist, ausgewechselt werden.It is examined whether the suspension of the passenger car after a Clash still carries so far that the passenger car in the next Workshop can be driven. Here then the main part of the Suspension, for example, the wishbone, by the collision was permanently and irreversibly deformed, but still shatterproof and sustainable is to be replaced.

Im Diagramm 1 werden auf der rechten Seite die Messresultate der Schlagversuche an einem Querlenker eines Personenkraftwagens dargestellt. Als Vergleichswerte sind im Diagramm 1 auf der linken Seite auch die Messresultate eines identischen Gussteiles dargestellt, das aus handelsüblichem Sphäroguss hergestellt wurde. Aus Diagramm 1 ist ersichtlich, dass die gesamte Energieaufnahme im Querlenker beim Schlagversuch mehr als 2200 J beträgt. Aus Diagramm 1 ist ebenfalls ersichtlich, dass der Deformationswert im Schlagversuch mehr als 75% höher ist als bei einem vergleichbaren Gussteil aus einer konventionellen Sphärogusslegierung. Die Deformation des Querlenkers, ausgedrückt in mm, gemessen als Differenz zwischen zwei Messpunkten am Gussteil, vor und nach dem Schlagversuch, beträgt mehr als 15 mm. Bei vergleichbaren Gussteilen aus einer konventionellen Sphärogusslegierung beträgt diese Deformation üblicherweise weniger als 9 mm. Die maximale Kraft, die vom Querlenker aufgenommen wird, liegt zwischen 3000 und 3500 kN. Der hier instrumentierte Schlagversuch wird durchgeführt auf einem Rosand Impact-Tester.In diagram 1 on the right side the measurement results of the Impact tests on a wishbone of a passenger car shown. As Comparative values are also the measurement results in diagram 1 on the left side of an identical casting, made of commercially available nodular cast iron was produced. From diagram 1 it can be seen that the whole Energy absorption in the control arm during impact test is more than 2200 J. From Diagram 1 it can also be seen that the deformation value in Impact test more than 75% higher than in a comparable castings a conventional nodular cast iron alloy. The deformation of the control arm, expressed in mm, measured as the difference between two measuring points on Casting, before and after the impact test, is more than 15 mm. at comparable castings from a conventional nodular cast iron alloy this deformation is usually less than 9 mm. The maximum force of the Wishbone is added, is between 3000 and 3500 kN. This here instrumented impact test is performed on a Rosand impact tester.

Querlenker für einen Personenkraftwagen, die aus der erfindungsgemässen Spärogusslegierung mit mindestens 2,4 % Si-Anteil und mit mindestens das Element Bor als Beimengung hergestellt werden, und die beim Gussputzen einer möglichst schonenden Oberflächenbehandlung unterworfen werden, zeichnen sich aus durch eine hohe plastische nicht reversible Verformbarkeit aus. Die tragenden Teile der Radaufhängung eines Automobils brechen bei dem Crash-Test, der eine bestimmte Unfallsituation simuliert, nicht und bleiben intakt.Wishbone for a passenger car, which from the inventive Pig iron alloy with at least 2.4% Si content and at least that Element boron can be produced as an admixture, and when casting a be subjected to as gentle as possible surface treatment, draw characterized by a high plastic non-reversible deformability. The bearing parts of the suspension of an automobile break during the crash test, which simulates a particular accident situation, not and remain intact.

Die vorliegende Gusslegierung eignet sich auch für alle anderen Fahrzeugteile, die sich bei extremen Belastungen verformen dürfen, jedoch nicht brechen dürfen.

Figure 00050001
The present cast alloy is also suitable for all other vehicle parts that may deform under extreme loads, but may not break.
Figure 00050001

Claims (10)

Sphärogusslegierung für Gusseisenprodukte mit einer plastischen Verformbarkeit, wobei die Sphärogusslegierung als Nicht-Eisenbestandteile zumindest die Elemente C, Si, Mn, Cu, Mg, S und als Beimengungen eines oder mehrere Elemente aus der Gruppe IIIb des Periodensystems enthält, dadurch gekennzeichnet, dass die Legierung als Beimengung zumindest das Element Bor enthält und dass der Si-Gehalt mehr als 2,4 % beträgt.Ductile cast iron alloy for cast iron products with plastic ductility, wherein the nodular cast iron alloy contains as non-iron constituents at least the elements C, Si, Mn, Cu, Mg, S and as admixtures of one or more elements from group IIIb of the periodic table, characterized in that the alloy contains at least the element boron as admixture and that the Si content is more than 2.4%. Sphärogusslegierung für Gusseisenprodukte mit einer plastischen Verformbarkeit nach dem Anspruch 1, dadurch gekennzeichnet, dass der Si-Gehalt 2,6 bis 2,9 % beträgt.Ductile cast iron alloy for cast iron products having a plastic deformability according to claim 1, characterized in that the Si content is 2.6 to 2.9%. Sphärogusslegierung für Gusseisenprodukte mit einer plastischen Verformbarkeit nach dem Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Legierung als Beimengung 2 bis 200 ppm Bor enthält.Ductile cast iron alloy for cast iron products having a plastic deformability according to claim 1 or 2, characterized in that the alloy contains 2 to 200 ppm of boron as admixture. Sphärogusslegierung für Gusseisenprodukte mit einer plastischen Verformbarkeit nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die plastische Verformung der Produkte nach einem instrumentierten Schlagversuch irreversibel und dauerhaft ist.Ductile cast iron alloy for cast iron products with a plastic deformability according to one of claims 1 to 5, characterized in that the plastic deformation of the products after an instrumented impact test is irreversible and permanent. Sphärogusslegierung für Gusseisenprodukte mit einer plastischen Verformbarkeit nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Energieaufnahme der Produkte im instrumentierten Schlagversuch mindestens 35% höher liegt als bei vergleichbaren Gusseisenprodukten aus konventionellen Sphärogusslegierungen, derart, dass die Produkte bruchsicher sind. Ductile cast iron alloy for cast iron products with a plastic deformability according to one of claims 1 to 6, characterized in that the energy absorption of the products in the instrumented impact test is at least 35% higher than comparable cast iron products from conventional ductile iron alloys, such that the products are shatterproof. Verfahren zur Herstellung von Gusseisenprodukten aus einer Sphärogusslegierung mit einer plastischen Verformbarkeit nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Gusseisenprodukte nach dem Giessverfahren einer Nachbehandlung unterworfen werden, die besonders schonend ist für die Produktoberflächen.A process for the production of cast iron products from a nodular cast iron alloy having a plastic deformability according to one of claims 1 to 5, characterized in that the cast iron products are subjected to a post-treatment after the casting process, which is particularly gentle on the product surfaces. Verfahren zur Herstellung von Gusseisenprodukten aus einer Sphärogusslegierung mit einer plastischen Verformbarkeit nach dem Anspruch 7, dadurch gekennzeichnet, dass die schonende Nachbehandlung der Oberflächen ein spannungsarmes Anglühen und bzw. oder ein Strahlen mit schwach abrasiven Partikeln umfasst.A process for the production of cast iron products from a nodular cast iron alloy having a plastic deformability according to claim 7, characterized in that the gentle aftertreatment of the surfaces comprises a low-stress annealing and / or blasting with weakly abrasive particles. Verwendung des Verfahrens nach dem Anspruch 6 oder 7 zur Herstellung eines bruchsicheren, irreversibel und dauerhaft verformbaren Querlenkers.Use of the method according to claim 6 or 7 for the preparation of a unbreakable, irreversible and permanently deformable wishbone. Verwendung der Sphärogusslegierung nach einem der Ansprüche 1 bis 5 zur Herstellung eines bruchsicheren, irreversibel und dauerhaft verformbaren Querlenkers.Use of the nodular cast iron alloy according to one of claims 1 to 5 for Production of a shatterproof, irreversible and permanently deformable Wishbone. Querlenker nach einem der Ansprüche 8 oder 9 dadurch gekennzeichnet, dass der Deformationswert nach der plastischen Verformung im instrumentierten Schlagversuch mindestens 15 mm beträgt.Wishbone according to one of claims 8 or 9, characterized in that the deformation value after the plastic deformation in the instrumented impact test is at least 15 mm.
EP02006104A 2001-06-20 2002-03-19 Spheroidal graphite cast iron Expired - Lifetime EP1270747B1 (en)

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CY20061101779T CY1107543T1 (en) 2001-06-20 2006-12-11 ALLOY GRAPHIC GRAPHITE ALLOY

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DE10129382 2001-06-20
DE10129382A DE10129382A1 (en) 2001-06-20 2001-06-20 nodular cast iron

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EP1270747A2 true EP1270747A2 (en) 2003-01-02
EP1270747A3 EP1270747A3 (en) 2004-01-02
EP1270747B1 EP1270747B1 (en) 2006-10-04

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EP3170578A1 (en) * 2015-11-17 2017-05-24 Georg Fischer GmbH Modification body

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DE102004056331A1 (en) * 2004-11-22 2006-05-24 Georg Fischer Fahrzeugtechnik Ag Ductile cast iron alloy and method for producing castings from nodular cast iron alloy
US20060292026A1 (en) * 2005-06-08 2006-12-28 Robert Eppich Cast iron alloy containing boron
SE531107C2 (en) * 2006-12-16 2008-12-23 Indexator Ab Method
US7846381B2 (en) * 2008-01-29 2010-12-07 Aarrowcast, Inc. Ferritic ductile cast iron alloys having high carbon content, high silicon content, low nickel content and formed without annealing
EP2319639A1 (en) * 2009-11-10 2011-05-11 Georg Fischer Automobilguss GmbH Cast iron axle leg with moulded steel core - method for manufacturing the axle leg
DE112012005191B4 (en) * 2012-08-13 2020-06-18 Komatsu Ltd. Sliding seal
WO2014027426A1 (en) * 2012-08-13 2014-02-20 株式会社小松製作所 Floating seal
EP3243920B1 (en) 2017-03-24 2020-04-29 GF Casting Solutions Kunshan Co. Ltd. Spheroidal cast alloy
US11820197B2 (en) 2022-02-09 2023-11-21 Honda Motor Co., Ltd. Vehicle control arm assembly

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FR1193067A (en) * 1958-03-05 1959-10-30 Bouchayer & Viallet Ets Improvements to special fonts
EP0525540A1 (en) * 1991-07-27 1993-02-03 MAN B & W Diesel Aktiengesellschaft Cylinder liner unit for use in an internal combustion engine
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EP3170578A1 (en) * 2015-11-17 2017-05-24 Georg Fischer GmbH Modification body

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BR0202323A (en) 2003-04-08
CY1107543T1 (en) 2013-03-13
EP1270747B1 (en) 2006-10-04
DK1270747T3 (en) 2007-02-05
ES2269539T3 (en) 2007-04-01
US20020195180A1 (en) 2002-12-26
ATE341650T1 (en) 2006-10-15
BR0202323B1 (en) 2010-11-03
US6861029B2 (en) 2005-03-01
EP1270747A3 (en) 2004-01-02
DE10129382A1 (en) 2003-01-02
PT1270747E (en) 2007-01-31
DE50208313D1 (en) 2006-11-16
MXPA02006048A (en) 2003-08-20

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