DE10348992B3 - Wear resistant steel contain specified amounts of carbon, silicon, manganese, chromium, nitrogen, aluminum, vanadium, calcium, boron, titanium, barium and iron - Google Patents

Wear resistant steel contain specified amounts of carbon, silicon, manganese, chromium, nitrogen, aluminum, vanadium, calcium, boron, titanium, barium and iron Download PDF

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DE10348992B3
DE10348992B3 DE2003148992 DE10348992A DE10348992B3 DE 10348992 B3 DE10348992 B3 DE 10348992B3 DE 2003148992 DE2003148992 DE 2003148992 DE 10348992 A DE10348992 A DE 10348992A DE 10348992 B3 DE10348992 B3 DE 10348992B3
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manganese
vanadium
nitrogen
boron
titanium
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Boris Turevsky
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    • 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

Wear resistant steel contains (%):C (0.70-1.30), Si (0.20-1.20), Mn (7.00-11.50), Cr (0.05-2.00), N (0.02-0.09), Al 0.01-0.07), V (0.01-0.07), Ca (0.001-0.05), B (0.001-0.04), Ti (0.01-0.10), Ba (0.01-0.05), remainder Fe.

Description

Die Erfindung gehört zur Metallurgie, insbesondere zu den verschleißfesten Stählen mit geringem Gehalt an Legierungselementen, die bei mechanischem Verschleiß und Stoßverschleiß eine Verwendung finden können.The Invention belongs for metallurgy, in particular for the wear-resistant steels with a low content Alloy elements that are used for mechanical wear and butt wear can find.

Es sind verschiedene verschleißfeste Stahlarten bekannt, z.B. WO 92/04478 A1, US-PS 4929416, US-PS 403938 . Diese Stahlarten enthalten große Mengen von Mangan, bzw. Chrom, Titan, Niob, was macht sie teuer.Various types of wear-resistant steel are known, for example WO 92/04478 A1, US Pat. No. 4,929,416. U.S. Patent 4,039,338 , These types of steel contain large amounts of manganese, or chromium, titanium, niobium, which makes them expensive.

Es ist auch verschleißfester Stahl bekannt, der relativ wenig Mangan und Chrom enthält. Aber dieser Stahl hat eine niedrige Schlagbiegezähigkeit, was für Mahlkugeln einer Trommelmühle nicht so wichtig ist. Für den Löffel eines Löffelbaggers u.ä. ist Schlagbiegezähigkeit von entscheidender Bedeutung.It is also more resistant to wear Known steel, which contains relatively little manganese and chromium. But This steel has a low impact strength, which is for grinding balls a drum mill not so important. For the spoon a backhoe etc. is Impact resistance crucial.

Die Aufgabe dieser Erfindung ist, einen Stahl mit geringem Gehalt an Legierungselementen anzugeben, der für Baggerteile geeignet wird.The Object of this invention is a low-content steel Specify alloying elements that are suitable for excavator parts.

Entsprechend der Erfindung wird ein Stahl vorgeschlagen, der folgende Komponenten enthält (jeweils in Masse-%): Kohlenstoff 0,70–1,30 Silizium 0,20–1,20 Mangan 7,00–11,50 Chrom 0,05–2,00 Stickstoff 0,02–0,09 Aluminium 0,01–0,07 Vanadium 0,01–0,07 Calcium 0,001–0,05 Bor 0,001–0,04 Titan 0,01–0,10 Barium 0,01–0,05 Eisen Rest According to the invention, a steel is proposed which contains the following components (in each case in% by mass): carbon 0.70 to 1.30 silicon 0.20 to 1.20 manganese 7.00 to 11.50 chrome 0.05 to 2.00 nitrogen 0.02-0.09 aluminum 0.01-0.07 vanadium 0.01-0.07 calcium 0.001-0.05 boron 0.001-0.04 titanium 0.01-0.10 barium 0.01-0.05 iron rest

Stickstoff in den vorgeschlagenen Mengen in der Kombination mit Kohlenstoff und Mangan in den vorgeschlagenen Mengen gewährleistet das Erhalten einer stabilen austenitischen Struktur. Kleinere Mengen davon erlauben es nicht, eine stabile austenitische Struktur zu bekommen, die höheren Mengen an Stickstoff und Kohlenstoff führen zu Defekten im Stahl, eine erhöhte Menge von Mangan ist ökonomisch unzweckmäßig. nitrogen in the proposed amounts in combination with carbon and manganese in the proposed quantities ensures getting one stable austenitic structure. Allow smaller amounts of it it does not get a stable austenitic structure, the higher amounts lead to nitrogen and carbon to defects in the steel, an increased Amount of manganese is economical inexpedient.

Stickstoff in den vorgeschlagenen Mengen verbessert die mechanischen Eigenschaften des Stahls, in erster Linie durch Verfestigung des Mischkristalls, der ein flächenzentriertes Gitter hat. Eine wesentliche Verbesserung (Erhöhung) der mechanischen Eigenschaften des Stahls wird durch Bildung von Chrom-, Bor-, Titan-, Calcium- und Aluminiumnitriden verursacht.nitrogen in the proposed quantities improves the mechanical properties of steel, primarily by solidification of the mixed crystal, the one face centered Grid has. A significant improvement (increase) in mechanical properties of steel is formed by the formation of chromium, boron, titanium, calcium and aluminum nitrides caused.

Bor in den Mengen 0,001 – 0,04% gewährleistet ein feinkörniges Gefüge des Stahls und verhindert außerdem eine Bildung von Chromcarbiden von dem Typ Cr23C6, was die Homogenität der Struktur verbessert und wesentlich die Plastizität des Stahls erhöht.Boron in the amounts 0.001 - 0.04% ensures a fine-grained structure of the steel and also prevents the formation of chromium carbides of the type Cr 23 C 6 , which improves the homogeneity of the structure and significantly increases the plasticity of the steel.

Bor in den Mengen weniger als 0,001 % übt keinen wesentlichen Einfluss auf den Strukturbildungsprozess aus und wirkt mit den Komponenten der Festlösung (Mischkristall) nicht zusammen. Bei Mengen mehr als 0,04% bilden sich große Ansammlungen nichtmetallischer Einschlüsse, was die mechanischen Eigenschaften des Stahls sprungartig verschlechtert (verringert).boron in amounts less than 0.001% has no significant influence on the structuring process and interacts with the components the solid solution (Mixed crystal) not together. For amounts greater than 0.04% form big ones Accumulations of non-metallic inclusions, what the mechanical properties of steel abruptly deteriorates (decreases).

Die Präsenz von Vanadium in ausgewählten Mengen erhöht die "Löslichkeit" des Stickstoffes im Mischkristall (Festlösung) im Laufe der Kristallisation. Es wird festgestellt, dass schon ab 0,01% Vanadium in dem Stahl eine effektive Verkleinerung der Körner beginnt, dank modifizierender Wirkung der Vanadiumnitride, was die Möglichkeit ergibt, die Vanadiummenge zu verkleinern.The presence vanadium in selected Quantities increased the "solubility" of nitrogen in mixed crystal (solid solution) in the course of crystallization. It is stated that already off 0.01% vanadium in the steel begins an effective reduction of grains, thanks to modifying effect of vanadium nitrides, giving the possibility results in reducing the amount of vanadium.

Das Vorhandensein eines starken nitridbildenden Elements in dem Stahl – des Aluminiums in den vorgeschlagenen Mengen – gewährleistet eine wesentlich verfeinerte Struktur, was den ganzen Komplex der mechanischen Eigenschaften verbessert.The Presence of a strong nitride-forming element in the steel - the aluminum in the proposed quantities - guaranteed a much more refined structure, what the whole complex of improved mechanical properties.

Das Vorhandensein von Kalzium zusammen mit Barium in den vorgeschlagenen Mengen fördert die Bildung gleichmäßig verteilter Oxid- und Sulfideinschlüsse, was die Anisotropie der Stahleigenschaften verringert.The Presence of calcium along with barium in the proposed Promotes quantities the formation evenly distributed Oxide and sulfide inclusions, which reduces the anisotropy of the steel properties.

Der vorgeschlagene Stahl ergibt eine Möglichkeit den Mangananteil in einem verschleißfesten Stahl um dα 1,5 – 2fache zu verringern.Of the proposed steel gives one way the manganese content in a wear-resistant Steel by dα 1.5 - 2 times to reduce.

Als Beispiel werden drei Stahlarten gezeigt (Masse%):

Figure 00030001
As an example, three types of steel are shown (mass%):
Figure 00030001

Alle drei Stähle haben bei Versuchen im Vergleich zu herkömmlichen verschleißfesten Stählen eine ca. 1,3-fach erhöhte Festigkeit und einen 1,4 – 1,8-fach verminderten Verschleiß ergeben.All three steels have in trials compared to conventional wear-resistant toughen an approximately 1.3 times increased Strength and a 1.4 - 1.8-fold reduced wear result.

Claims (1)

Verschleißfester Stahl, enthaltend (Massen-)% Kohlenstoff 0,70–1,30 Silizium 0,20–1,20 Mangan 7,00–11,50 Chrom 0,05–2,00 Stickstoff 0,02–0,09 Aluminium 0,01–0,07 Vanadium 0,01–0,07 Calcium 0,001–0,05 Bor 0,001–0, 04 Titan 0,01–0,10 Barium 0,01–0,05 Eisen Rest
Wear-resistant steel, containing (mass)% carbon 0.70 to 1.30 silicon 0.20 to 1.20 manganese 7.00 to 11.50 chrome 0.05 to 2.00 nitrogen 0.02-0.09 aluminum 0.01-0.07 vanadium 0.01-0.07 calcium 0.001-0.05 boron 0.001-0, 04 titanium 0.01-0.10 barium 0.01-0.05 iron rest
DE2003148992 2003-10-22 2003-10-22 Wear resistant steel contain specified amounts of carbon, silicon, manganese, chromium, nitrogen, aluminum, vanadium, calcium, boron, titanium, barium and iron Expired - Fee Related DE10348992B3 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039328A (en) * 1975-08-11 1977-08-02 Jury Donatovich Novomeisky Steel
US4929416A (en) * 1987-08-25 1990-05-29 Tikhonovich Vadim I Cast steel
WO1992004478A1 (en) * 1990-09-12 1992-03-19 Lokomo Oy Austenitic wear resistant steel and method for heat treatment thereof
WO2000043555A1 (en) * 1999-01-19 2000-07-27 Magotteaux International S.A. Process of the production of high-carbon cast steels intended for wearing parts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039328A (en) * 1975-08-11 1977-08-02 Jury Donatovich Novomeisky Steel
US4929416A (en) * 1987-08-25 1990-05-29 Tikhonovich Vadim I Cast steel
WO1992004478A1 (en) * 1990-09-12 1992-03-19 Lokomo Oy Austenitic wear resistant steel and method for heat treatment thereof
WO2000043555A1 (en) * 1999-01-19 2000-07-27 Magotteaux International S.A. Process of the production of high-carbon cast steels intended for wearing parts

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