EP0821073A1 - Cast iron alloy for the production of piston rings for combustion engines - Google Patents

Cast iron alloy for the production of piston rings for combustion engines Download PDF

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Publication number
EP0821073A1
EP0821073A1 EP97110708A EP97110708A EP0821073A1 EP 0821073 A1 EP0821073 A1 EP 0821073A1 EP 97110708 A EP97110708 A EP 97110708A EP 97110708 A EP97110708 A EP 97110708A EP 0821073 A1 EP0821073 A1 EP 0821073A1
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Prior art keywords
max
cast iron
iron alloy
alloy according
percent
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EP97110708A
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German (de)
French (fr)
Inventor
Hans-Jürgen Veutgen
Wilfried Dipl.-Ing. Langner
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Federal Mogul Burscheid GmbH
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Federal Mogul Burscheid GmbH
AE Goetze GmbH
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Priority claimed from DE1996129970 external-priority patent/DE19629970C1/en
Application filed by Federal Mogul Burscheid GmbH, AE Goetze GmbH filed Critical Federal Mogul Burscheid GmbH
Publication of EP0821073A1 publication Critical patent/EP0821073A1/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
    • C22C37/10—Cast-iron alloys containing aluminium or silicon
    • 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

Definitions

  • the invention relates to a cast iron alloy for the production of piston rings for Internal combustion engines with high temperature loads.
  • Piston rings for internal combustion engines mainly consist of gray ones Cast iron alloys with proportions of spherical to lamellar Graphite precipitates. Especially the one in the top, the combustion chamber adjacent piston grooves are exposed to high temperatures, so that mechanical strength values of them with high temperature resistance be requested.
  • DE OS 3 628 157 for example, one is used spheroidal graphite cast iron alloy with martensitic basic structure for high Piston rings exposed to temperatures, which have 1 to 15 percent by weight in the basic structure Contains copper excreted in spherical to droplet form high thermal conductivity for quick heat dissipation and thus for a reduced temperature load on the piston ring material.
  • the present invention is therefore based on the object of a cast iron alloy for internal combustion engine piston rings exposed to high temperatures to find stable strength values at high temperatures.
  • this object is achieved by a cast iron alloy with a pearlitic basic structure and spherical or vermicular graphite precipitates, which consists of 2.5 - 4.0 Percent by weight carbon 1.5 - 4.0 " silicon 0.2 - 2.0 " manganese Max. 0.35 " phosphorus Max. 0.03 " sulfur Max. 3.0 " chrome Max. 1.5 " Vanadium Max. 2.5 " molybdenum Max. 0.2 " nickel 1.0 - 3.5 " copper 0.02-2.5 " aluminum 0.005 - 0.04 " magnesium and iron as the rest.
  • Piston rings are tested with the cast iron alloys according to the invention poured to determine the heat resistance temperatures between 500 - 700 ° C exposed to annealing for 30 minutes. It became a normal decrease in hardness values determined without the pearlitic basic structure of the Cast iron alloy has been changed significantly. The strength values were determined by this Temperature load does not change significantly, so that the material meets the required has high heat resistance.
  • the cast iron alloy may contain up to 0.4 weight percent antimony, which may be added to the alloy during melting or via the inoculant. Likewise, up to a total of 4.0 percent by weight of at least one of the elements nickel, cobalt, tin, titanium, niobium, tantalum, boron and / or bismuth can be added to the alloy.
  • the cast iron alloy can additionally contain up to a maximum of 300 ppm of nitrogen introduced by cored wire injection.
  • the cast iron alloy can be subjected to an annealing treatment at up to 750 ° C.
  • the piston rings can be subjected to a nitriding treatment over the entire surface or on the running surfaces and / or the flanking surfaces by one of the customary processes such as bath nitriding, gas nitriding, plasma nitriding or pulse plasma nitriding.
  • the cast iron alloys according to the invention with contents of silicon, chromium, vanadium, molybdenum and aluminum at the upper content limit are preferably used for nitriding within the composition according to the invention, although all cast iron materials within the claimed alloy ranges are suitable for nitriding.
  • the preferred cast iron alloy used without nitriding then consists of 2.5 - 4.0 Percent by weight carbon 1.5 - 2.5 " silicon 0.2 - 2.0 " manganese Max. 0.35 " phosphorus Max. 0.03 " sulfur Max. 0.3 " chrome Max. 0.2 " Vanadium Max. 0.3 " molybdenum Max. 0.2 " nickel 1.0 - 3.5 " copper Max. 0.1 " aluminum 0.005 - 0.04 " magnesium and iron as the rest.
  • the cast iron alloy specially used in nitrided form then consists of 2.5 - 4.0 Percent by weight carbon 2.0 - 4.0 " silicon 0.2 - 2.0 " manganese Max. 0.35 " phosphorus Max. 0.03 " sulfur 0.2 - 3.0 " chrome Max. 1.5 " Vanadium Max. 2.5 " molybdenum Max. 0.2 " nickel 1.0 - 3.5 " copper 0.02-2.5 " aluminum 0.005 - 0.04 " magnesium and iron as the rest.
  • Both alloys can be used to increase wear, to improve Pearlization and elements added to improve nitridability.
  • the invention thus provides a cast iron alloy which is suitable for piston rings in internal combustion engines which are exposed to high temperature loads.
  • the cast iron materials show good warming behavior and their structure shows no significant changes even with prolonged high temperature loads.
  • the cast iron alloys can be used equally well for the production of piston rings of all diameters of up to 1 m in both stationary casting and in slip casting.
  • the cast iron alloys can also be used for similarly loaded machine parts of, in particular, internal combustion engines such as cylinder liners, pistons, connecting rods, sealing rings in general, packing rings, gear wheels and gear rings.
  • the following two cast iron alloys are preferably used, with cast iron alloy 1 preferably not nitrided and cast iron alloy 2 preferably used in nitrided form.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Gears, Cams (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

Cast iron alloy has a perlite base structure with spherical or vermicular graphite deposits and contains (in wt.%): 2.5-4.0C, 1.5-4.0 Si, 0.2-2.0 Mn, max. 0.35 P, max. 0.035 S, max. 3.0 Cr, max. 1.5 V, max. 2.5 Mo, max. 0.2 Ni, 1.0-3.5 Cu, 0.02-2.5 Al, 0.005-0.04 Mg, and a balance of Fe.

Description

Die Erfindung betrifft eine Gußeisenlegierung für die Herstellung von Kolbenringen für Verbrennungskraftmaschinen mit hoher Temperaturbelastung.The invention relates to a cast iron alloy for the production of piston rings for Internal combustion engines with high temperature loads.

Kolbenringe für Verbrennungskraftmaschinen bestehen überwiegend aus grauen Gußeisenlegierungen mit Anteilen an kugelförmigen bis lamellaren Graphitausscheidungen. Insbesondere die in der obersten,dem Verbrennungsraum benachbarten Kolbennut angeordneten Kolbenringe sind hohen Temperaturen ausgesetzt, so daß von ihnen mechanische Festigkeitswerte mit hoher Temperaturbeständigkeit verlangt werden. Nach beispielsweise der DE OS 3 628 157 verwendet man eine kugelgraphitische Gußeisenlegierung mit martensitischem Grundgefüge für auf hohe Temperaturen belastete Kolbenringe, welche 1 bis 15 Gewichtsprozent im Grundefüge in Kugel- bis Tröpfchenform ausgeschiedenes Kupfer enthält, das auf Grund seiner hohen Wäremeleitfähigkeit für eine schnelle Wärmeableitung und damit für eine verminderte Temperaturbelastung des Kolbenringwerkstoffes sorgt.Piston rings for internal combustion engines mainly consist of gray ones Cast iron alloys with proportions of spherical to lamellar Graphite precipitates. Especially the one in the top, the combustion chamber adjacent piston grooves are exposed to high temperatures, so that mechanical strength values of them with high temperature resistance be requested. According to DE OS 3 628 157, for example, one is used spheroidal graphite cast iron alloy with martensitic basic structure for high Piston rings exposed to temperatures, which have 1 to 15 percent by weight in the basic structure Contains copper excreted in spherical to droplet form high thermal conductivity for quick heat dissipation and thus for a reduced temperature load on the piston ring material.

Insbesondere in modernen Verbrennungskraftmaschinen werden zur Verbesserung des Fahr-, Lauf- und Geräuschkomforts bei gleichzeitig deutlicher Leistungssteigerung Kurzhuber mit Leichtbau-Kastenkolben eingesetzt, bei denen zur Erzielung eines vibrationsarmen Laufs die Kolbenringbestückungen extrem nach oben verlegt sind. Insbesondere der oberste Kolbenring und zum Teil auch der zweite sogenannte Abstreifring werden dadurch höheren Temperaturen ausgesetzt, so daß von ihrem Werkstoff mechanische Festigkeitswerte mit verbesserter Temperaturbeständigkeit verlangt werden. Die Warmfestigkeit der aus der DE OS 3 628 157 bekannten martensitischen Gußeisenlegierungen reicht für derartig hohe Beanspruchungen nicht aus. Especially in modern internal combustion engines are used to improve the Driving, running and noise comfort combined with a significant increase in performance used with lightweight box pistons, in which to achieve a low-vibration barrel the piston ring assemblies are placed extremely upwards. In particular the top piston ring and partly also the second so-called Scraper ring are thereby exposed to higher temperatures, so that from their Material mechanical strength values with improved temperature resistance be requested. The heat resistance of those known from DE OS 3 628 157 Martensitic cast iron alloys are not sufficient for such high loads out.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Gußeisenlegierung für hohen Temperaturen ausgesetzten Kolbenringe von Verbrennungskraftmaschinen mit bei hohen Temperaturen beständigen Festigkeitswerten zu finden.The present invention is therefore based on the object of a cast iron alloy for internal combustion engine piston rings exposed to high temperatures to find stable strength values at high temperatures.

Erfindungsgemäß wird diese Aufgabe durch eine Gußeisenlegierung mit perlitischer Grundstruktur und kugelförmigen oder vermikularförmigen Graphitausscheidungen gelöst, welche aus 2,5 - 4,0 Gewichtsprozent Kohlenstoff 1,5 - 4,0 " Silizium 0,2 - 2,0 " Mangan max. 0,35 " Phosphor max. 0,03 " Schwefel max. 3,0 " Chrom max. 1,5 " Vanadium max. 2,5 " Molybdän max. 0,2 " Nickel 1,0 - 3,5 " Kupfer 0,02 - 2,5 " Aluminium 0,005 - 0,04 " Magnesium und Eisen als Rest besteht. According to the invention, this object is achieved by a cast iron alloy with a pearlitic basic structure and spherical or vermicular graphite precipitates, which consists of 2.5 - 4.0 Percent by weight carbon 1.5 - 4.0 " silicon 0.2 - 2.0 " manganese Max. 0.35 " phosphorus Max. 0.03 " sulfur Max. 3.0 " chrome Max. 1.5 " Vanadium Max. 2.5 " molybdenum Max. 0.2 " nickel 1.0 - 3.5 " copper 0.02-2.5 " aluminum 0.005 - 0.04 " magnesium and iron as the rest.

Mit den erfindungsgemäßen Gußeisenlegierungen werden probeweise Kolbenringe gegossen, die zur Ermittlung über Warmfestigkeit Temperaturen zwischen 500 - 700 °C durch Glühbehandlungen wahrend 30 Minuten ausgesetzt wurden. Es wurde ein normaler Abfall der Härtewerte festgestellt, ohne daß die perlitische Grundstruktur der Gußeisenlegierung wesentlich verändert wurde. Die Festigkeitswerte wurden durch diese Temperaturbelastung nicht wesentlich verändert, so daß der Werkstoff die geforderte hohe Warmfestigkeit besitzt. Piston rings are tested with the cast iron alloys according to the invention poured to determine the heat resistance temperatures between 500 - 700 ° C exposed to annealing for 30 minutes. It became a normal decrease in hardness values determined without the pearlitic basic structure of the Cast iron alloy has been changed significantly. The strength values were determined by this Temperature load does not change significantly, so that the material meets the required has high heat resistance.

Zur weiteren Perlitisierung kann die Gußeisenlegierung bis zu 0,4 Gewichtsprozent Antimon enthalten, das der Legierung während des Schmelzens oder über das Impfmittel zugegeben sein kann. Ebenso kann der Legierung bis zu insgesamt 4,0 Gewichtsprozent mindestens eines der Elemente Nickel, Cobalt, Zinn, Titan, Niob, Tantal, Bor und/oder Wismuth zulegiert sein. Die Gußeisenlegierung kann zusätzlich bis zu maximal 300 ppm mittels Fülldraht-Injektion eingebrachtes Stickstoff enthalten. Zur verbesserten Bearbeitbarkeit kann die Gußeiseniegierung einer Glühbehandlung bei bis zu 750 °C unterzogen werden. Zusätzlich können die Kolbenringe zur Verbesserung ihrer Verschleißfestigkeit ganzflächig oder an den Laufflächen und/oder den Flankerflächen nach einem der üblichen Verfahren wie Badnitrieren, Gasnitrieren, Plasmanitrieren oder Pulsplasmanitrieren einer Nitrierbehandlung unterzogen werden. Dabei werden bevorzugt die erfindungsgemäßen Gußeisenlegierungen mit an der oberen Gehaltsgrenze an Silizium, Chrom, Vanadium, Molybdän und Aluminium liegenden Gehalten innerhalb der erfindungsgemäßen Zusammensetzung für das Nitrieren verwendet, obwohl alle innerhalb der beanspruchten Legierungsbereiche liegenden Gußeisenwerkstoffe zum Nitrieren geeignet sind. Die bevorzugte ohne Nitrieren eingesetzte Gußeisenlegierung besteht dann aus 2,5 - 4,0 Gewichtsprozent Kohlenstoff 1,5 - 2,5 " Silizium 0,2 - 2,0 " Mangan max. 0,35 " Phosphor max. 0,03 " Schwefel max. 0,3 " Chrom max. 0,2 " Vanadium max. 0,3 " Molybdän max. 0,2 " Nickel 1,0 - 3,5 " Kupfer max. 0,1 " Aluminium 0,005 - 0,04 " Magnesium und Eisen als Rest. For further pearlitization, the cast iron alloy may contain up to 0.4 weight percent antimony, which may be added to the alloy during melting or via the inoculant. Likewise, up to a total of 4.0 percent by weight of at least one of the elements nickel, cobalt, tin, titanium, niobium, tantalum, boron and / or bismuth can be added to the alloy. The cast iron alloy can additionally contain up to a maximum of 300 ppm of nitrogen introduced by cored wire injection. For improved machinability, the cast iron alloy can be subjected to an annealing treatment at up to 750 ° C. In addition, to improve their wear resistance, the piston rings can be subjected to a nitriding treatment over the entire surface or on the running surfaces and / or the flanking surfaces by one of the customary processes such as bath nitriding, gas nitriding, plasma nitriding or pulse plasma nitriding. The cast iron alloys according to the invention with contents of silicon, chromium, vanadium, molybdenum and aluminum at the upper content limit are preferably used for nitriding within the composition according to the invention, although all cast iron materials within the claimed alloy ranges are suitable for nitriding. The preferred cast iron alloy used without nitriding then consists of 2.5 - 4.0 Percent by weight carbon 1.5 - 2.5 " silicon 0.2 - 2.0 " manganese Max. 0.35 " phosphorus Max. 0.03 " sulfur Max. 0.3 " chrome Max. 0.2 " Vanadium Max. 0.3 " molybdenum Max. 0.2 " nickel 1.0 - 3.5 " copper Max. 0.1 " aluminum 0.005 - 0.04 " magnesium and iron as the rest.

Die speziell in nitrierter Form eingesetzte Gußeiseniegierung besteht dann aus 2,5 - 4,0 Gewichtsprozent Kohlenstoff 2,0 - 4,0 " Silizium 0,2 - 2,0 " Mangan max. 0,35 " Phosphor max. 0,03 " Schwefel 0,2 - 3,0 " Chrom max. 1,5 " Vanadium max. 2,5 " Molybdän max. 0,2 " Nickel 1,0 - 3,5 " Kupfer 0,02 - 2,5 " Aluminium 0,005 - 0,04 " Magnesium und Eisen als Rest. The cast iron alloy specially used in nitrided form then consists of 2.5 - 4.0 Percent by weight carbon 2.0 - 4.0 " silicon 0.2 - 2.0 " manganese Max. 0.35 " phosphorus Max. 0.03 " sulfur 0.2 - 3.0 " chrome Max. 1.5 " Vanadium Max. 2.5 " molybdenum Max. 0.2 " nickel 1.0 - 3.5 " copper 0.02-2.5 " aluminum 0.005 - 0.04 " magnesium and iron as the rest.

Beide Legierungen können die zur Verschleißsteigerung, zur Verbesserung der Perlitisierung und zur Verbesserung der Nitrierbarkeit zugesetzten Elemente enthalten.Both alloys can be used to increase wear, to improve Pearlization and elements added to improve nitridability.

Durch die Erfindung ist somit eine Gußeisenlegierung geschaffen, die für hohen Temperaturbelastungen ausgesetzte Kolenringe in Verbrennungskraftmaschinen geeignet ist. Die Gußeisenwerkstoffe zeigen ein gutes Warmsetzverhalten und ihr Gefüge zeigt auch bei längeren hohen Temperaturbelastungen keine wesentlichen Veränderungen. Die Gußeisenlegierungen können zur Herstellung von Kolbenringen aller Durchmesser von bis zu 1 m sowohl im Standguß als auch im Schlenderguß gleichermaßen gut verwendet werden. Ebenso können die Gußeisenlegierungen für ähnlich belastete Maschinenteile von vor allem Verbrennungskraftmaschinen wie Zylinderlaufbuchsen, Kolben, Pleuel, Dichtungsringe generell, Packungsringe, Zahnräder und Getrieberinge verwendet werden. Die beiden folgenden Gußeisenlegierungen werden bevorzugt verwendet, wobei Gußeisenlegierung 1 bevorzugt nicht nitriert und Gußeisenlegierung 2 bevorzugt in nitrierter Form eingesetzt wird. Gußeisenlegierung 1 Gußeisenlegierung 2 Kohlenstoff 3,76 Gewichtsprozent 3,78 Gewichtsprozent Silizium 2,16 " 2,98 " Mangan 0,88 " 0,86 " Phosphor 0,10 " 0,09 " Schwefel 0,008 " 0,007 " Chrom 0,04 " 2,04 " Vanadium 0,01 " 0,01 " Molybdän 0,02 " 0,02 " Nickel 0,05 " 0,05 " Kupfer 2,46 " 2,38 " Titan 0,01 " 0,01 " Wolfram 0,03 " 0,03 " Niob - 0,02 " Magnesium 0,011 " 0,010 " Rest Eisen Rest Eisen The invention thus provides a cast iron alloy which is suitable for piston rings in internal combustion engines which are exposed to high temperature loads. The cast iron materials show good warming behavior and their structure shows no significant changes even with prolonged high temperature loads. The cast iron alloys can be used equally well for the production of piston rings of all diameters of up to 1 m in both stationary casting and in slip casting. The cast iron alloys can also be used for similarly loaded machine parts of, in particular, internal combustion engines such as cylinder liners, pistons, connecting rods, sealing rings in general, packing rings, gear wheels and gear rings. The following two cast iron alloys are preferably used, with cast iron alloy 1 preferably not nitrided and cast iron alloy 2 preferably used in nitrided form. Cast iron alloy 1 Cast iron alloy 2 carbon 3.76 Percent by weight 3.78 Percent by weight silicon 2.16 " 2.98 " manganese 0.88 " 0.86 " phosphorus 0.10 " 0.09 " sulfur 0.008 " 0.007 " chrome 0.04 " 2.04 " Vanadium 0.01 " 0.01 " molybdenum 0.02 " 0.02 " nickel 0.05 " 0.05 " copper 2.46 " 2.38 " titanium 0.01 " 0.01 " tungsten 0.03 " 0.03 " niobium - 0.02 " magnesium 0.011 " 0.010 " Rest of iron Rest of iron

Claims (9)

Gußeiseniegierung für die Herstellung von Kolbenringen für Verbrennungskraftmaschinen mit hoher Temperaturbelastung, dadurch gekennzeichnet, daß die Gußeisenlegierung eine perlitische Grundstruktur mit kugelförmigen oder vermikularförmigen Graphitausscheidungen besitzt und aus 2,5 - 4,0 Gewichtsprozent Kohlenstoff 1,5 - 4,0 " Silizium 0,2 - 2,0 " Mangan max. 0,35 " Phosphor max. 0,03 " Schwefel max. 3,0 " Chrom max. 1,5 " Vanadium max. 2,5 " Molybdän max. 0,2 " Nickel 1,0 - 3,5 " Kupfer 0,02 - 2,5 " Aluminium 0,005 - 0,04 " Magnesium sowie Eisen als Rest besteht.
Cast iron alloy for the production of piston rings for internal combustion engines with high temperature loads, characterized in that the cast iron alloy has a pearlitic basic structure with spherical or vermicular graphite precipitates and consists of 2.5 - 4.0 Percent by weight carbon 1.5 - 4.0 " silicon 0.2 - 2.0 " manganese Max. 0.35 " phosphorus Max. 0.03 " sulfur Max. 3.0 " chrome Max. 1.5 " Vanadium Max. 2.5 " molybdenum Max. 0.2 " nickel 1.0 - 3.5 " copper 0.02-2.5 " aluminum 0.005 - 0.04 " magnesium as well as iron as the rest.
Gußeiseniegierung nach Patentanspruch 1, dadurch gekennzeichnet, daß die Gußeisenlegierung bis zu 0,4 Gewichtsprozent Antimon enthält.Cast iron alloy according to claim 1, characterized in that the Cast iron alloy contains up to 0.4% by weight of antimony. Gußeisenlegierung nach den Patentansprüchen 1 und/oder 2, dadurch gekennzeichnet, daß die Gußeisenlegierung mindestens eines der Elemente Nickel, Cobalt, Zinn, Titan, Niob, Tantal, Bor und/oder Wismuth in einer Menge von insgesamt bis zu 4,0 Gewichtsprozent enthält. Cast iron alloy according to claims 1 and / or 2, thereby characterized in that the cast iron alloy contains at least one of the elements nickel, Cobalt, tin, titanium, niobium, tantalum, boron and / or bismuth in an amount of contains a total of up to 4.0 percent by weight. Gußeisenlegierung nach mindestens einem oder Patentansprüche 1 bis 3, dadurch gekennzeichnet, daß die Gußeisenlegierung mittels Fülldrahtinjektion in die Schmelze eingebrachtes Stickstoffin einer Menge von maximal 300 ppm enthält.Cast iron alloy according to at least one or claims 1 to 3, characterized characterized in that the cast iron alloy by means of cored wire injection into the Contains melt introduced nitrogen in an amount of at most 300 ppm. Gußeisenlegierung nach mindestens einem der Patentansprüche 1 bis 4, dadurch gekennzeichnet, daß die aus der Legierung gegossenen Werkstücke einer Glühbehandlung von bis zu 750 °C unterzogen sind.Cast iron alloy according to at least one of claims 1 to 4, characterized characterized in that the cast parts from the alloy one Subjected to annealing treatment up to 750 ° C. Gußeisenlegierung nach mindestens einem der Patentansprüche 1 bis 5, dadurch gekennzeichnet, daß die aus der Legierung gegossenen Werkstücke einer Nitrierbehandlung nach einem der üblichen Verfahren unterzogen sind.Cast iron alloy according to at least one of claims 1 to 5, characterized characterized in that the cast parts from the alloy one Nitriding treatment by one of the usual procedures are subjected. Gußeisenlegierung nach mindestens einem der Patentansprüche 1 bis 6, dadurch gekennzeichnet, daß die zur Nitrierung vorgesehene Gußeisenlegierung aus 2,5 - 4,0 Gewichtsprozent Kohlenstoff 2,0 - 4,0 " Silizium 0,2 - 2,0 " Mangan max. 0,35 " Phosphor max. 0,03 " Schwefel 0,2 - 3,0 " Chrom max. 1,5 " Vanadium max. 2,5 " Molybdän max. 0,2 " Nickel 0,1 - 3,5 " Kupfer 0,02 - 2,5 " Aluminium 0,005 - 0,04 " Magnesium und Eisen als Rest besteht.
Cast iron alloy according to at least one of Claims 1 to 6, characterized in that the cast iron alloy provided for nitriding consists of 2.5 - 4.0 Percent by weight carbon 2.0 - 4.0 " silicon 0.2 - 2.0 " manganese Max. 0.35 " phosphorus Max. 0.03 " sulfur 0.2 - 3.0 " chrome Max. 1.5 " Vanadium Max. 2.5 " molybdenum Max. 0.2 " nickel 0.1-3.5 " copper 0.02-2.5 " aluminum 0.005 - 0.04 " magnesium and iron as the rest.
Gußeisenlegierung nach mindestens einem der Patentansprüche 1 bis 6, dadurch gekennzeichnet, daß die bevorzugt nicht nitrierte Gußeisenlegierung aus 2,5 - 4,0 Gewichtsprozent Kohlenstoff 1,5 - 2,5 " Silizium 0,2 - 2,0 " Mangan max. 0,35 " Phosphor max. 0,03 " Schwefel max. 0,3 " Chrom max. 0,2 " Vanadium max. 0,3 " Molybdän max. 0,2 " Nickel 0,1 - 3,5 " Kupfer max. 0,1 " Aluminium 0,005- 0,04 " Magnesium und Eisen als Rest besteht.
Cast iron alloy according to at least one of claims 1 to 6, characterized in that the preferably non-nitrided cast iron alloy 2.5 - 4.0 Percent by weight carbon 1.5 - 2.5 " silicon 0.2 - 2.0 " manganese Max. 0.35 " phosphorus Max. 0.03 " sulfur Max. 0.3 " chrome Max. 0.2 " Vanadium Max. 0.3 " molybdenum Max. 0.2 " nickel 0.1-3.5 " copper Max. 0.1 " aluminum 0.005-0.04 " magnesium and iron as the rest.
Verwendung der Gußeisenlegierung nach mindestens einem der vorangegangenen Patentansprüche für die Herstellung von Zylinderlaufbüchsen, Kolben, Pleuel, Getrieberinge, Dichtungsringe generell, Zahnräder und Packungsringe.Use of the cast iron alloy according to at least one of the preceding Claims for the manufacture of cylinder liners, pistons, connecting rods, Gear rings, sealing rings in general, gears and packing rings.
EP97110708A 1996-07-25 1997-07-01 Cast iron alloy for the production of piston rings for combustion engines Withdrawn EP0821073A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996129970 DE19629970C1 (en) 1996-07-25 1996-07-25 Cast iron alloy used e.g.. in the manufacture of actuator sleeves
DE19629970 1996-07-25

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EP0821073A1 true EP0821073A1 (en) 1998-01-28

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EP (1) EP0821073A1 (en)
JP (1) JPH1068042A (en)
CN (1) CN1176315A (en)
BR (1) BR9704066A (en)
DE (1) DE19654893C2 (en)

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WO2001006028A1 (en) * 1999-07-15 2001-01-25 Freni Brembo S.P.A. Cast iron for vehicle brake components
DE10049598A1 (en) * 2000-10-06 2002-04-18 Federal Mogul Burscheid Gmbh Production of a cast iron material used e.g. in the production of piston rings comprises forming a melt, producing a blank with a white cast structure, and holding the blank
EP1458518A2 (en) * 2001-11-27 2004-09-22 Tupy Fundiçoes Ltda. Graphitic cast iron of high mechanical strength
DE10309386B4 (en) * 2003-03-04 2005-02-24 Federal-Mogul Burscheid Gmbh Process for producing a cast iron material with a targeted residual carbide content
EP1529852A1 (en) * 2002-07-01 2005-05-11 Hitachi Metals, Ltd. Material for sliding parts having self-lubricity and wire material for piston ring
WO2006072663A3 (en) * 2005-01-05 2007-05-18 Metso Paper Inc Ductile iron and method for manufacturing ductile iron for engineering components requiring strength and toughness
EP1865082A1 (en) * 2006-06-08 2007-12-12 Georg Fischer Eisenguss GmbH Cast iron with good high temperature oxidation resistance
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DE19654893C2 (en) 1999-06-10

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