WO2006133668A1 - Steel for production of wearing parts for the construction machine industry - Google Patents

Steel for production of wearing parts for the construction machine industry Download PDF

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Publication number
WO2006133668A1
WO2006133668A1 PCT/DE2006/000848 DE2006000848W WO2006133668A1 WO 2006133668 A1 WO2006133668 A1 WO 2006133668A1 DE 2006000848 W DE2006000848 W DE 2006000848W WO 2006133668 A1 WO2006133668 A1 WO 2006133668A1
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Prior art keywords
steel
chemical composition
production
steel according
wearing parts
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PCT/DE2006/000848
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German (de)
French (fr)
Inventor
Roman Diederichs
Thomas Wurm
Robert F. Lange
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Georgsmarienhütte Gmbh
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Priority to DE112006002178T priority Critical patent/DE112006002178A5/en
Publication of WO2006133668A1 publication Critical patent/WO2006133668A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Definitions

  • the present invention relates to a steel for the production of wearing parts for the construction machinery industry. This material was developed, for example, for the production of dredger teeth and caterpillar segments.
  • the steel must be suitable for forging or other hot forming. It must have a Jominy hardness of 1.5 mm (J1, 5) between 48 and 55 HRC (Rockwell C hardness) and 50 mm (J50) above 40 HRC.
  • the steel requires good toughness properties in the - Tertoorstore range, which prevent failure of the components made of this material, even with sudden load. Especially for use as a bucket tooth a high wear resistance and good heat resistance are necessary.
  • the desired properties can be achieved by the targeted adjustment of a martensitic microstructure with precipitates of special carbides by a correspondingly adjusted chemical composition and a coordinated heat treatment after forging or hot working.
  • structural steels of the group Cr-Si-Mo-V (1.80XX) are used according to technical customer specifications for this purpose.
  • Such steels have a martensitic structure with vanadium carbides and Tintancarbonitriden and comply with the requirements of the hardenability.
  • the object of the present invention is to avoid the mentioned disadvantages by proposing a new steel which has the required mechanical properties with regard to hardenability and additionally has good toughness, heat resistance and wear resistance. At the same time, the steel should be readily pourable and forgeable. Furthermore, the new steel is to be produced in a way that saves resources compared to the known steels by replacing a part of the molybdenum content with a combination of titanium, niobium and boron and by the possibility of complete or partial replacement of vanadium by a combination of tungsten and possibly niobium.
  • the invention relates to a steel for the production of wearing parts for the construction machinery industry with the following chemical composition in percent by weight:
  • a Mo content between 0.08% and 0.20% is used.
  • the boron content is preferably between 0.0020 and 0.0040%.
  • the titanium content is preferably between 0.030% and 0.050%.
  • the niobium content is preferably between 0.020 and 0.040%.
  • the invention further relates to the use of a steel according to one or more of the preceding claims for the production of wearing parts for the construction machinery industry, which has a martensitic structure with precipitates of special carbides after tempering.
  • vanadium carbides used in known steels have a lower thermodynamic stability than, for example, tungsten carbides.
  • vanadium carbides can be partially dissolved at high operating temperatures (up to 750 ° C., according to the customer, when used as an excavator tooth due to frictional heat).
  • the vanadium carbides are replaced by a combination of niobium carbonitrides and tungsten carbides, as a result of which improved stability of the special carbides is achieved even with increased use temperatures of the components.
  • Another object of the invention is a component according to claim 9, characterized in that the hardenability according to Jominy in an end face ⁇ distance of 1, 5 mm (J 1, 5) between 48 and 55 HRC and at a distance of 50 mm (J50) is over 40 HRC.

Abstract

The invention relates to a steel for production of wearing parts for the construction machine industry, in particular for excavator teeth or caterpillar track segments, characterised in that the chemical composition thereof has the following wt. % content: 0.10 % ≤ C ≤ 0.50 %, 1.0 % ≤ Si ≤ 2.0 %, 0.20 % ≤ Mn ≤ 1.0 %, 1.0 % ≤ Cr ≤ 2.5 %, 0.05 % ≤ Ni ≤ 0.50 %, 0 % ≤ Mo ≤ 0.25 %, 0.05 % ≤ W ≤ 0.50 %, 0 % ≤ Ti ≤ 0.050 %, 0.005 % ≤ Nb ≤ 0.050 %, 0 % ≤ V ≤ 0.15 %, 0 % ≤ Al ≤ 0.05 %, 0.0010 % ≤ B ≤ 0.0050 % and 0.005 % ≤ N ≤ 0.015 % the remainder being iron and the fusion impurities and residual materials.

Description

Stahl für die Herstellung von Verschleißteilen für die BaumaschinenindustrieSteel for the production of wear parts for the construction machinery industry
Die vorliegende Erfindung betrifft einen Stahl für die Herstellung von Verschleißteilen für die Baumaschinenindustrie. Dieser Werkstoff wurde zum Beispiel für die Herstellung von Baggerzähnen und Raupenkettensegmenten entwickelt.The present invention relates to a steel for the production of wearing parts for the construction machinery industry. This material was developed, for example, for the production of dredger teeth and caterpillar segments.
Der Stahl muss zum Schmieden oder zum sonstigen Warmumformen geeignet sein. Er muss eine Jominy-Härte im Stirnflächenabstand von 1 ,5 mm (J1 ,5) von zwischen 48 und 55 HRC (Rockwell Härte C) und im Abstand von 50 mm (J50) von über 40 HRC aufweisen.The steel must be suitable for forging or other hot forming. It must have a Jominy hardness of 1.5 mm (J1, 5) between 48 and 55 HRC (Rockwell C hardness) and 50 mm (J50) above 40 HRC.
Darüber hinaus benötigt der Stahl gute Zähigkeitseigenschaften im Einsatz- Temperarturbereich, die ein Versagen der Bauteile aus diesem Werkstoff auch bei schlagartiger Belastung verhindern. Insbesondere für den Einsatz als Baggerzahn sind eine hohe Verschleißfestigkeit sowie eine gute Warmfestigkeit notwendig.In addition, the steel requires good toughness properties in the Einsatz- Tertoorstore range, which prevent failure of the components made of this material, even with sudden load. Especially for use as a bucket tooth a high wear resistance and good heat resistance are necessary.
Die gewünschten Eigenschaften können erreicht werden durch die gezielte Einstellung eines martensitischen Gefüges mit Ausscheidungen von Sondercarbiden durch eine entsprechend einzustellende chemische Zusammensetzung sowie eine abgestimmte Wärmebehandlung nach erfolgter Schmiedung bzw. Warmumformung.The desired properties can be achieved by the targeted adjustment of a martensitic microstructure with precipitates of special carbides by a correspondingly adjusted chemical composition and a coordinated heat treatment after forging or hot working.
Bisher werden für diesen Verwendungszweck beispielsweise Edelbaustähle der Gruppe Cr-Si-Mo-V (1.80XX) nach technischen Kundenvorschriften eingesetzt.So far, for example, structural steels of the group Cr-Si-Mo-V (1.80XX) are used according to technical customer specifications for this purpose.
Derartige Stähle weisen ein martensitisches Gefüge mit Vanadiumcarbiden sowie Tintancarbonitriden auf und halten die Vorgaben bezüglich der Härtbarkeit ein.Such steels have a martensitic structure with vanadium carbides and Tintancarbonitriden and comply with the requirements of the hardenability.
Nachteile dieser bekannten Werkstoffvarianten liegen darin, dass die bisherigen Werkstoffvarianten einen hohen Ressourcenverbrauch an teuren und knappen Legierungsmitteln (insbesondere Molybdän und Vanadium) aufweisen. Insbesondere Vanadium wird derzeit vermehrt im Bereich ausscheidungshärtenden ferritisch- perlitischen Stähle (AFP-Stähle) eingesetzt, wodurch Vanadium zu einem zunehmend knappen Gut wird.Disadvantages of these known material variants are that the previous material variants a high resource consumption of expensive and scarce Have alloying agents (especially molybdenum and vanadium). In particular, vanadium is currently being used increasingly in precipitation-hardening ferritic-pearlitic steels (AFP steels), making vanadium an increasingly scarce commodity.
Das Ziel der vorliegenden Erfindung ist die Vermeidung der genannten Nachteile durch den Vorschlag eines neuen Stahles, der die geforderten mechanischen Eigenschaften bezüglich der Härtbarkeit aufweist und zusätzlich eine gute Zähigkeit, Warmfestigkeit und Verschleißfestigkeit aufweist. Gleichzeitig soll der Stahl gut strangvergießbar und schmiedbar sein. Des Weiteren soll der neue Stahl ressourcenschonender herstellbar sein als die bekannten Stähle durch den Ersatz eines Teils des Molybdängehaltes durch eine Kombination aus Titan, Niob und Bor sowie durch die Möglichkeit des vollständigen oder teilweisen Ersatzes von Vanadium durch eine Kombination von Wolfram und eventuell Niob.The object of the present invention is to avoid the mentioned disadvantages by proposing a new steel which has the required mechanical properties with regard to hardenability and additionally has good toughness, heat resistance and wear resistance. At the same time, the steel should be readily pourable and forgeable. Furthermore, the new steel is to be produced in a way that saves resources compared to the known steels by replacing a part of the molybdenum content with a combination of titanium, niobium and boron and by the possibility of complete or partial replacement of vanadium by a combination of tungsten and possibly niobium.
Die hohe Jominy-Härte auch bei großen Stirnflächenabständen (J50) wird trotz des abgesenkten Molybdängehaltes durch eine Legierung mit Bor erreicht, wobei entscheidend ist, dass keine Bornitride gebildet werden, sondern dass das Bor in säurelöslicher Form vorliegt. Zu diesem Zweck wird der vorhandene Stickstoff durch eine Mikrolegierung mit Titan und Niob abgebunden.The high Jominy hardness even at large face distances (J50) is achieved despite the lowered molybdenum content by an alloy with boron, wherein it is crucial that no boron nitrides are formed, but that the boron is present in acid-soluble form. For this purpose, the existing nitrogen is tied off by a microalloying with titanium and niobium.
Entscheidend für eine gute Verschleißfestigkeit ist vor allem das Vorhandensein von Ausscheidungen von Sondercarbiden. Das Vorhandensein einer ausreichenden Menge von Sondercarbiden kann entweder durch eine Legierung mit Vanadium, durch eine Legierung mit Wolfram und Niob oder durch eine kombinierte Legierung von Vanadium, Wolfram und Niob erreicht werden.Decisive for a good wear resistance is above all the presence of precipitates of special carbides. The presence of a sufficient amount of special carbides can be achieved either by an alloy with vanadium, by an alloy with tungsten and niobium or by a combined alloy of vanadium, tungsten and niobium.
Lösungsgemäß betrifft die Erfindung einen Stahl zur Herstellung von Verschleißteilen für die Baumaschinenindustrie mit folgender chemischen Zusammensetzung in Gewichtsprozent:According to the invention, the invention relates to a steel for the production of wearing parts for the construction machinery industry with the following chemical composition in percent by weight:
0,1% < C < 0,5%; 1 ,0% < Si < 2,0%, 0,2% < Mn < 1 ,0%; 1 ,0% < Cr < 2,5%; 0,05% < Ni < 0,50%; 0% < Mo < 0,25%; 0% < Ti < 0,05%; 0,005% < Nb < 0,05%; 0% < V < 0,1%; 0,05% < W < 0,50%; 0% < AI < 0,05%; 0,0010% < B < 0,0050%; 0,005% < N < 0,015%0.1% <C <0.5%; 1.0% <Si <2.0%, 0.2% <Mn <1.0%; 1.0% <Cr <2.5%; 0.05% <Ni <0.50%; 0% <Mo <0.25%; 0% <Ti <0.05%; 0.005% <Nb <0.05%; 0% <V <0.1%; 0.05% <W <0.50%; 0% <Al <0.05%; 0.0010% <B <0.0050%; 0.005% <N <0.015%
wobei der Rest aus Eisen und erschmelzungsbedingten Verunreinigungen besteht.the remainder being iron and melt contaminants.
Vorzugsweise wird ein Mo-Gehalt zwischen 0,08% und 0,20% eingesetzt.Preferably, a Mo content between 0.08% and 0.20% is used.
Der Boranteil liegt vorzugsmäßig zwischen 0,0020 und 0,0040%.The boron content is preferably between 0.0020 and 0.0040%.
Der Titananteil liegt vorzugsweise zwischen 0,030% und 0,050%.The titanium content is preferably between 0.030% and 0.050%.
Der Niobanteil liegt vorzugsweise zwischen 0,020 und 0,040%.The niobium content is preferably between 0.020 and 0.040%.
Eine denkbare Legierung ist gemäß Anspruch 6 in Zusammenhang mit ein oder mehreren der Merkmale der vorhergehenden Ansprüche folgendermaßen angegeben:A conceivable alloy according to claim 6 in connection with one or more of the features of the preceding claims is indicated as follows:
0,25% < c < 0 ,35%0.25% <c <0, 35%
1 ,4% < Si < 1 ,6%1, 4% <Si <1, 6%
0,50% < Mn < 0 ,70%0.50% <Mn <0.70%
1 ,6% < Cr ≤ 2 ,2%1, 6% <Cr ≤ 2, 2%
0,10% < Ni < 0 ,30%0,10% <Ni <0, 30%
0,20% < W < 0 ,40%0,20% <W <0, 40%
0% < V < 0 ,05%0% <V <0, 05%
0,012% < Al < 0 ,020%0.012% <Al <0, 020%
0,008% < N < 0 ,012%0.008% <N <0, 012%
Eine weitere Alternative ist durch den Anspruch 7 gegeben:A further alternative is given by claim 7:
0 ,25% < C < 0 ,35%0, 25% <C <0, 35%
1 ,4% < Si < 1 ,6%1, 4% <Si <1, 6%
0 ,50% < WIn < 0 ,70%0, 50% <WIn <0, 70%
1 ,6% < Cr ≤ 2 ,2% 0% < w < 0 ,10%1, 6% <Cr ≤ 2, 2% 0% <w <0, 10%
0,05% < v < 0 ,15%0.05% <v <0.15%
0,012% < AI < 0 ,020%0.012% <AI <0, 020%
0,008% < N < 0 ,012%0.008% <N <0, 012%
Eine dritte Alternative ist durch den Anspruch 8 gegeben:A third alternative is given by claim 8:
0,25% < c < 0,35%0.25% <c <0.35%
1 ,4% < Si < 1 ,6%1, 4% <Si <1, 6%
0,50% ≤ Mn ≤ 0,70%0.50% ≤ Mn ≤ 0.70%
1 ,6% < Cr < 2,2%1, 6% <Cr <2.2%
0,10% < Ni < 0,30%0.10% <Ni <0.30%
0,10% < W < 0,30%0.10% <W <0.30%
0,01% < V < 0,10%0.01% <V <0.10%
0,012% ≤ AI ≤ 0,020%0.012% ≤ AI ≤ 0.020%
0,008% < N < 0,012%0.008% <N <0.012%
Die Erfindung betrifft weiterhin die Verwendung eines Stahles nach einem oder mehreren der vorhergehenden Ansprüche zur Herstellung von Verschleißteilen für die Baumaschinenindustrie, die nach dem Vergüten eine martensitische Struktur mit Ausscheidungen von Sondercarbiden aufweist.The invention further relates to the use of a steel according to one or more of the preceding claims for the production of wearing parts for the construction machinery industry, which has a martensitic structure with precipitates of special carbides after tempering.
Die bei bekannten Stählen eingesetzten Vanadiumcarbide weisen eine geringere thermodynamische Stabilität auf als z.B. Wolframcarbide. Darüber hinaus können Vanadiumcarbide bei hohen Einsatztemperaturen ( bis zu 7500C sollen nach Kundenangaben im Einsatz als Baggerzahn durch Reibungswärme möglich sein) teilweise aufgelöst werden.The vanadium carbides used in known steels have a lower thermodynamic stability than, for example, tungsten carbides. In addition, vanadium carbides can be partially dissolved at high operating temperatures (up to 750 ° C., according to the customer, when used as an excavator tooth due to frictional heat).
Daher werden erfindungsgemäß die Vanadiumcarbide durch eine Kombination von Niobcarbonitriden und Wolframcarbiden ersetzt, wodurch eine verbesserte Stabilität der Sondercarbide auch bei erhöhten Einsatz Temperaturen der Bauteile erreicht werden. Ein weiterer Gegenstand der Erfindung ist ein Bauteil gemäß Anspruch 9, dass dadurch gekennzeichnet ist, dass die Härtbarkeit nach Jominy in einem Stirnflächen¬ abstand von 1 ,5 mm (J 1 ,5) zwischen 48 und 55 HRC und in einem Abstand von 50 mm ( J50) über 40 HRC beträgt. Therefore, according to the invention, the vanadium carbides are replaced by a combination of niobium carbonitrides and tungsten carbides, as a result of which improved stability of the special carbides is achieved even with increased use temperatures of the components. Another object of the invention is a component according to claim 9, characterized in that the hardenability according to Jominy in an end face ¬ distance of 1, 5 mm (J 1, 5) between 48 and 55 HRC and at a distance of 50 mm (J50) is over 40 HRC.

Claims

Stahl für die Herstellung von Verschleißteilen für die BaumaschinenindustriePatentansprüche Steel for the production of wearing parts for the construction machinery industryPatent claims
1. Stahl zur Herstellung von Verschleißteilen für die Baumaschinenindustrie, insbesondere für Baggerzähne oder Raupenkettensegmente, dadurch gekennzeichnet, dass dessen chemische Zusammensetzung folgende Gehalte in Gewichtsprozent aufweist:1. Steel for the production of wear parts for the construction machinery industry, in particular for excavator teeth or caterpillar segments, characterized in that its chemical composition has the following contents in percent by weight:
0 ,10% < c < 0,50%0, 10% <c <0.50%
1 ,0% < Si < 2,0%1, 0% <Si <2.0%
0 ,20% < Mn < 1 ,0%0, 20% <Mn <1, 0%
1 ,0% < Cr ≤ 2,5%1, 0% <Cr ≤ 2.5%
0 ,05% < Ni < 0,50%0, 05% <Ni <0.50%
0 % < Mo < 0,25%0% <Mo <0.25%
0 ,05% < W < 0,50%0, 05% <W <0.50%
0 % < Ti < 0,050%0% <Ti <0.050%
0 ,005% ≤ Nb < 0,050%0, 005% ≤ Nb <0.050%
0 % < V < 0,15%0% <V <0.15%
0 % < Al ≤ 0,05%0% <Al ≤ 0.05%
0 ,0010% < B < 0,0050%0, 0010% <B <0.0050%
0 ,005% < N < 0,015%0, 005% <N <0.015%
wobei der Rest aus Eisen und den erschmelzungsbedingten Verunreinigungen und Reststoffen besteht.the remainder being iron and the contaminants and residues due to melting.
2. Stahl nach Anspruch 1 , der dadurch gekennzeichnet ist, dass seine chemische 0,08% < Mo < 0,20%2. Steel according to claim 1, characterized in that its chemical 0.08% <Mo <0.20%
3. Stahl nach Anspruch 1 oder 2, der dadurch gekennzeichnet ist, dass seine chemische Zusammensetzung derart ist, dass gilt:3. Steel according to claim 1 or 2, characterized in that its chemical composition is such that:
0,0020 < B < 0,0040%0.0020 <B <0.0040%
4. Stahl nach einem der Ansprüche 1 bis 3, der dadurch gekennzeichnet ist, dass seine chemische Zusammensetzung derart ist, dass gilt:4. Steel according to one of claims 1 to 3, characterized in that its chemical composition is such that the following applies:
0,030% < Ti < 0,050%0.030% <Ti <0.050%
5. Stahl nach einem der Ansprüche 1 bis 4, der dadurch gekennzeichnet ist, dass seine chemische Zusammensetzung derart ist, dass gilt:5. Steel according to one of claims 1 to 4, characterized in that its chemical composition is such that:
0,020% < Nb < 0,040%0.020% <Nb <0.040%
6. Stahl nach einem der Ansprüche 1 bis 5, der dadurch gekennzeichnet ist, dass seine chemische Zusammensetzung derart ist, dass gilt:Steel according to one of claims 1 to 5, characterized in that its chemical composition is such that:
0,25% < c < 0,35%0.25% <c <0.35%
1 ,4% < Si < 1 ,6%1, 4% <Si <1, 6%
0,50% < Mn < 0,70%0.50% <Mn <0.70%
1 ,6% < Cr < 2,2%1, 6% <Cr <2.2%
0,10% ≤ Ni ≤ 0,30%0.10% ≤ Ni ≤ 0.30%
0,20% < W < 0,40%0.20% <W <0.40%
0% < V ≤ 0,05%0% <V ≤ 0.05%
0,012% ≤ AI ≤ 0,020%0.012% ≤ AI ≤ 0.020%
0,008% < N < 0,012%0.008% <N <0.012%
7. Stahl nach einem der Ansprüche 1 bis 5, der dadurch gekennzeichnet ist, dass seine chemische Zusammensetzung derart ist, dass gilt:7. Steel according to one of claims 1 to 5, characterized in that its chemical composition is such that:
0,25% < C < 0,35%0.25% <C <0.35%
1 ,4% < Si < 1 ,6%1, 4% <Si <1, 6%
0,50% < Mn < 0,70% 1 ,6% < Cr< 2,2%0.50% <Mn <0.70% 1, 6% <Cr <2.2%
0,10% < Ni < 0,30%0.10% <Ni <0.30%
0% < W< 0,10%0% <W <0.10%
0,05% < V< 0,15%0.05% <V <0.15%
0,012% < Al< 0,020%0.012% <Al <0.020%
0,008% < N< 0,012%0.008% <N <0.012%
8. Stahl nach einem der Ansprüche 1 bis 5, der dadurch gekennzeichnet ist, dass seine chemische Zusammensetzung derart ist, dass gilt:8. Steel according to one of claims 1 to 5, characterized in that its chemical composition is such that:
0,25% ≤c≤ 0,35%0.25% ≤c≤ 0.35%
1 ,4% < Si< 1,6%1, 4% <Si <1.6%
0,50% < Mn < 0,70%0.50% <Mn <0.70%
1,6% < Cr< 2,2%1.6% <Cr <2.2%
0,10% <Ni< 0,30%0.10% <Ni <0.30%
0,10% <W< 0,30%0.10% <W <0.30%
0,01% <V< 0,10%0.01% <V <0.10%
0,012% <AI< 0,020%0.012% <AI <0.020%
0,008% <N< 0,012%0.008% <N <0.012%
9. Verwendung eines Stahles nach einem der Ansprüche 1 bis 8 zur Herstellung von Verschleißteilen für die Baumaschinenindustrie, die nach dem Vergüten eine mar- tensitische Struktur mit Ausscheidungen von Sondercarbiden aufweisen.9. Use of a steel according to any one of claims 1 to 8 for the production of wear parts for the construction machinery industry, which have after tempering a martensitic structure with precipitates of special carbides.
10. Teil nach Anspruch 9, dadurch gekennzeichnet, dass die Härtbarkeit nach Jominy in einem Stirnflächenabstand von 1,5mm (J1,5) zwischen 48 und 55 HRC und in einem Abstand von 50mm (J50) über 40 HRC beträgt. 10. Part according to claim 9, characterized in that the Jominy curability in an end face distance of 1.5 mm (J1.5) is between 48 and 55 HRC and at a distance of 50 mm (J50) over 40 HRC.
PCT/DE2006/000848 2005-06-16 2006-05-17 Steel for production of wearing parts for the construction machine industry WO2006133668A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN105463320A (en) * 2015-12-06 2016-04-06 辽宁宏昌重工股份有限公司 High-strength wear-resistant steel for track shoe and preparing method for high-strength wear-resistant steel
WO2018001333A1 (en) * 2016-06-30 2018-01-04 中车戚墅堰机车车辆工艺研究所有限公司 Low alloy cast steel, smelting method and heat treatment method therefor, and railway locomotive parts

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