EP0230576A1 - Alloyed tool steel with high wear-resistance - Google Patents
Alloyed tool steel with high wear-resistance Download PDFInfo
- Publication number
- EP0230576A1 EP0230576A1 EP86116867A EP86116867A EP0230576A1 EP 0230576 A1 EP0230576 A1 EP 0230576A1 EP 86116867 A EP86116867 A EP 86116867A EP 86116867 A EP86116867 A EP 86116867A EP 0230576 A1 EP0230576 A1 EP 0230576A1
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- European Patent Office
- Prior art keywords
- weight
- vanadium
- steel
- tool steel
- nitrogen
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Definitions
- the subject matter of the invention is an alloyed tool steel with great wear resistance for use in the production of tools which are exposed to particularly heavy wear.
- Tools that have to work under conditions of intensive wear and tear are made of hard metal or steels of the Ledeburitic class, such as high-speed steels and high-chromium steels that also contain a high carbon content.
- the main disadvantage of the hard metal is the high manufacturing costs, the low toughness and the difficulties associated with the production of tools with larger dimensions.
- the steels of the Ledeburitic class have a low flexibility for hot forming and a large one Tendency to carbide streak segregation, which reduces the toughness after plastic deformation and post-heat treatment.
- a high-speed steel is known from Polish Patent No. 125 293, which contains 0.6-1.3% by weight carbon, up to 0.5% by weight manganese, up to 0.03% by weight phosphorus, up to 0.03% by weight sulfur, 3 , 0 - 5.0 wt% chromium, 0 - 18.0 wt% tungsten and 0 - 9.0 wt% molybdenum, with the interdependency of tungsten and molybdenum with the formula 7 ⁇ W + 1.9 Mo ⁇ 18 , until 0.4%, 1.0-3.0% vanadium, 0.5-3.0% silicon and 0.03-0.30% nitrogen is expressed and the rest consists of iron and the inevitable impurities.
- a high-speed steel is known from DE-PS 2 758 330 which contains 0.07-1.7% by weight carbon, 0.01-0.08% by weight nitrogen, 0.02-1.5% by weight boron , 01 - 1.5 wt% silicon, 0.01 - 1.0 wt% manganese, 5.0 - 15.0 wt% cobalt, 3.0 - 7.0 wt% chromium, 13.0 - 20.0 %
- molybdenum 0-10.0% by weight tungsten, 0-5.0% by weight vanadium, 0.02-2.0% by weight niobium and / or tantalum and iron in addition to 100%.
- Also known from DE-PS 3 144 476 is a high-speed steel which, in its composition, contains carbon in an amount of 0.08-2.0% by weight, silicon in an amount of 0.5-3.0% by weight, aluminum in an amount of 0.5-3.0% by weight, chromium in an amount of 0.5-10.0% by weight, molybdenum in an amount of 0.5-10.0% by weight, tungsten in an amount of 0, 5-20.0% by weight, vanadium in an amount of 0.5-6.0% by weight, cobalt in an amount of 0 - 10% by weight and iron in the supplement contains up to 100%.
- the aim of the invention is to find an alloyed tool steel which, with almost complete limitation of the formation of eutectic mixtures of the Ledeburit type, offers the possibility of regulating its wear resistance and grindability in a wide range.
- the essence of the invention is that a steel 0.4 - 4.5 wt% carbon, 0 - 2.0 wt% manganese, 0 - 2.5 wt% silicon, 0 - 6.0 wt% chromium, 0 - 7.0% by weight tungsten, 0 - 4.0% by weight molybdenum, 0 - 10.0% by weight cobalt, vanadium, niobium and nitrogen and the rest form iron and unavoidable impurities, 1 - 21% by weight vanadium, 0 - 16 , 0% by weight titanium, 0 - 4.0% by weight niobium and 0.01 - 2.0% by weight nitrogen.
- the structure of the steel according to the invention contains primary carbides of the MC type and carbonitrides of the MX type with regular forms, which do not form eutectics of the ledeburite type, in an amount of 6-50 percent by volume, and a maximum of 2 percent by volume of the ledeburitic eutectics.
- the steel according to the invention is suitable for machining and for the production of tools for cold and hot forming.
- the rest is made up of iron and the inevitable impurities.
- the steel structure contains 12% by volume of undissolved, primary vanadium carbonitrates.
- the steel has significantly greater wear resistance than the high-speed steel SW18, with almost the same grindability.
- the tool steel contains: After casting, there is approximately 8.5 volume percent primary carbides of the MC type in the structure of this steel. The arrangement of these carbides after plastic deformation / hot deformation was very regular.
- the hardness after soft annealing is 227 HV.
- the hardening and tempering characteristics of this steel enable it to be used in both cold and hot working. If the steel is used for cold working and the required hardness is 58 - 60 HRC, it is hardened from 1173 K in the water and tempered at 473 K. The heat treatment ensures the necessary red glow hardness during hot working in the range from 873 - 923 K, which after hardening from 1553 K in oil and tempering at 843 K.
- the steel with the chemical composition mentioned above was used for cutting tabs of bimetallic knives for paper cutting instead of the previously used steel with the average chemical basic composition: 1.20% C, 0.50% Cr, 1.2% W, 0.15% V
- the use of the steel according to the invention makes it possible to extend the working time of these knives without dulling them from 4 to 8 hours, at the same time increasing the number of regrinding options for these knives by approximately 80%.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
Der Erfindungsgegenstand ist ein legierter Werkzeugstahl mit großer Verschleißfestigkeit zur Anwendung bei der Herstellung von Werkzeugen, die einem besonders starken Verschleiß ausgesetzt sind.The subject matter of the invention is an alloyed tool steel with great wear resistance for use in the production of tools which are exposed to particularly heavy wear.
Werkzeuge, die unter Bedingungen eines intensiven Verschleißes arbeiten müssen, werden aus Hartmetall.oder aus Stählen der Ledeburitischen Klasse, wie Schnellarbeitsstähle sowie Hochchromstähle, die gleichzeitig einen großen Kohlenstoffgehalt enthalten, hergestellt.Tools that have to work under conditions of intensive wear and tear are made of hard metal or steels of the Ledeburitic class, such as high-speed steels and high-chromium steels that also contain a high carbon content.
Der wesentliche Nachteil des Hartmetalles sind die hohen Herstellungskosten, die geringe Zähigkeit sowie die Schwierigkeiten, die mit der Herstellung von Werkzeugen mit größeren Abmessungen verbunden sind.The main disadvantage of the hard metal is the high manufacturing costs, the low toughness and the difficulties associated with the production of tools with larger dimensions.
Die Stähle der Ledeburitischen Klasse besitzen eine geringe Nachgiebigkeit zur Warmverformung und eine große Neigung zur Streifenseigerung von Carbiden, was die Zähigkeit nach plastischer Verformung und Nachwärmebehandlung reduziert.The steels of the Ledeburitic class have a low flexibility for hot forming and a large one Tendency to carbide streak segregation, which reduces the toughness after plastic deformation and post-heat treatment.
Bekannt ist aus dem polnischen Patent Nr. 125 293 ein Schnellarbeitsstahl, der 0,6 - 1,3 Gew% Kohlenstoff, bis 0,5 Gew% Mangan, bis 0,03 Gew% Phosphor, bis 0,03 Gew% Schwefel, 3,0 - 5,0 Gew% Chrom, 0 - 18,0 Gew% Wolfram und 0 - 9,0 Gew% Molybdän enthält, wobei die gegenseitige Abhängigkeit von Wolfram und Molybdän mit der Formel 7 ≤ W + 1,9 Mo ≤18, bis 0,4 %, 1,0 - 3,0 % Vanadin, 0,5 - 3,0 % Silizium und 0,03 - 0,30 % Stickstoff ausgedrückt ist und der Rest aus dem Eisen und den unvermeidlichen Verunreinigungen besteht.A high-speed steel is known from Polish Patent No. 125 293, which contains 0.6-1.3% by weight carbon, up to 0.5% by weight manganese, up to 0.03% by weight phosphorus, up to 0.03% by weight sulfur, 3 , 0 - 5.0 wt% chromium, 0 - 18.0 wt% tungsten and 0 - 9.0 wt% molybdenum, with the interdependency of tungsten and molybdenum with the formula 7 ≤ W + 1.9 Mo ≤18 , until 0.4%, 1.0-3.0% vanadium, 0.5-3.0% silicon and 0.03-0.30% nitrogen is expressed and the rest consists of iron and the inevitable impurities.
Darüber hinaus ist aus der DE-PS 2 758 330 ein Schnellarbeitsstahl bekannt, der 0,07 - 1,7 Gew% Kohlenstoff, 0,01 - 0,08 Gew% Stickstoff, 0,02 - 1,5 Gew% Bor, 0,01 - 1,5 Gew% Silizium, 0,01 - 1,0 Gew% Mangan, 5,0 - 15,0 Gew% Kobalt, 3,0 - 7,0 Gew% Chrom, 13,0 - 20,0 Gew% Molybdän, 0 - 10,0 Gew% Wolfram, 0 - 5,0 Gew% Vanadin, 0,02 - 2,0 Gew% Niob und/oder Tantal sowie Eisen in der Ergänzung bis 100 % enthält.Furthermore, a high-speed steel is known from DE-PS 2 758 330 which contains 0.07-1.7% by weight carbon, 0.01-0.08% by weight nitrogen, 0.02-1.5% by weight boron , 01 - 1.5 wt% silicon, 0.01 - 1.0 wt% manganese, 5.0 - 15.0 wt% cobalt, 3.0 - 7.0 wt% chromium, 13.0 - 20.0 % By weight molybdenum, 0-10.0% by weight tungsten, 0-5.0% by weight vanadium, 0.02-2.0% by weight niobium and / or tantalum and iron in addition to 100%.
Bekannt ist auch aus der DE-PS 3 144 476 ein Schnellarbeitsstahl, der in seiner Zusammensetzung Kohlenstoff in einer Menge von 0,08 - 2,0 Gew%, Silizium in einer Menge von 0,5 - 3,0 Gew%, Aluminium in einer Menge von 0,5 - 3,0 Gew%, Chrom in einer Menge von 0,5 - 10,0 Gew%, Molybdän in einer Menge von 0,5 - 10,0 Gew%, Wolfram in einer Menge von 0,5 - 20,0 Gew%, Vanadin in einer Menge von 0,5 - 6,0 Gew%, Kobalt in einer Menge von 0 - 10 Gew% sowie Eisen in der Ergänzung bis 100 % enthält.Also known from DE-PS 3 144 476 is a high-speed steel which, in its composition, contains carbon in an amount of 0.08-2.0% by weight, silicon in an amount of 0.5-3.0% by weight, aluminum in an amount of 0.5-3.0% by weight, chromium in an amount of 0.5-10.0% by weight, molybdenum in an amount of 0.5-10.0% by weight, tungsten in an amount of 0, 5-20.0% by weight, vanadium in an amount of 0.5-6.0% by weight, cobalt in an amount of 0 - 10% by weight and iron in the supplement contains up to 100%.
Ziel der Erfindung ist es, einen legierten Werkzeugstahl zu finden, der mit fast vollständiger Beschränkung des Entstehens von eutektischen Gemischen des Ledeburittypes die Möglichkeit bietet, in einem breiten Bereich seine Verschleißfestigkeit und Schleifbarkeit zu regulieren.The aim of the invention is to find an alloyed tool steel which, with almost complete limitation of the formation of eutectic mixtures of the Ledeburit type, offers the possibility of regulating its wear resistance and grindability in a wide range.
Das Wesen der Erfindung besteht darin, daß ein Stahl 0,4 - 4,5 Gew% Kohlenstoff, 0 - 2,0 Gew% Mangan, 0 - 2,5 Gew% Silizium, 0 - 6,0 Gew% Chrom, 0 - 7,0 Gew% Wolfram, 0 - 4,0 Gew% Molybdän, 0 - 10,0 Gew% Kobalt, Vanadin, Niob sowie Stickstoff enthält und den Rest Eisen und unvermeidliche Verunreinigungen bilden, 1 - 21 Gew% Vanadin, 0 - 16,0 Gew% Titan, 0 - 4,0 Gew% Niob sowie 0,01 - 2,0 Gew% Stickstoff enthält.The essence of the invention is that a steel 0.4 - 4.5 wt% carbon, 0 - 2.0 wt% manganese, 0 - 2.5 wt% silicon, 0 - 6.0 wt% chromium, 0 - 7.0% by weight tungsten, 0 - 4.0% by weight molybdenum, 0 - 10.0% by weight cobalt, vanadium, niobium and nitrogen and the rest form iron and unavoidable impurities, 1 - 21% by weight vanadium, 0 - 16 , 0% by weight titanium, 0 - 4.0% by weight niobium and 0.01 - 2.0% by weight nitrogen.
Der erfindungsgemäße Stahl enthält in seiner Struktur nach dem Abgießen primäre Carbide des MC-Types und Carbonitride des MX-Types mit regulären Formen, die keine Eutektika des Ledeburittyps bilden, in einer Menge von 6-50 Volumenprozent, und maximal 2 Volumenprozent der ledeburitischen Eutektika.The structure of the steel according to the invention contains primary carbides of the MC type and carbonitrides of the MX type with regular forms, which do not form eutectics of the ledeburite type, in an amount of 6-50 percent by volume, and a maximum of 2 percent by volume of the ledeburitic eutectics.
Durch die Änderung der Volumenteile und der Phasenzusammensetzung der Carbide und Carbonitride kann man in dem breiten Bereich die Verschleißfestigkeit und Schleifbarkeit regulieren.By changing the volume parts and the phase composition of the carbides and carbonitrides, wear resistance and sandability can be regulated in a wide range.
Der erfindungsgemäße Stahl eignet sich zum Zerspanen sowie zur Herstellung von Werkzeugen zur Kalt- und Warmverformung.The steel according to the invention is suitable for machining and for the production of tools for cold and hot forming.
Der Werkzeugstahl enthält:
- - 0,5 Gewichtsprozent Titan
- - 1,43 Gewichtsprozent Kohlenstoff
- - 3,7 Gewichtsprozent Chrom
- - 6,15 Gewichtsprozent Wolfram
- - 6,4 Gewichtsprozent Vanadin
- - 0,24 Gewichtsprozent Stickstoff
- - 0,3 Gewichtsprozent Niob.
- - 0.5 percent by weight titanium
- - 1.43 weight percent carbon
- - 3.7 weight percent chromium
- - 6.15% by weight tungsten
- - 6.4% by weight vanadium
- - 0.24 weight percent nitrogen
- - 0.3% by weight of niobium.
Den Rest bildet das Eisen und die unvermeidlichen Verunreinigungen.The rest is made up of iron and the inevitable impurities.
Nach Abgießen treten im Gefüge dieses Stahles reguläre, gleichmäßig angeordnete primäre Vanadincarbonitride auf, deren Nachgiebigkeit zur Warmverformung gut ist. Nach dem Härten vom 1513 K beträgt die Härte 960 HV,und nach dem Anlassen beträgt 2 Stunden lang die Härte 865 HV bei 830 K.After casting, regular, uniformly arranged primary vanadium carbonitrides appear in the structure of this steel, the flexibility of which is good for hot working. After hardening from 1513 K, the hardness is 960 HV, and after tempering, the hardness is 865 HV at 830 K for 2 hours.
In dem Stahlgefüge nach Härten sind 12 Volumenprozent von ungelösten, primären Vanadin-Carbonitrate vorhanden. Der Stahl hat bedeutend größere Verschleißfestigkeit als der Schnellarbeitsstahl SW18, bei fast derselben Schleifbarkeit.After hardening, the steel structure contains 12% by volume of undissolved, primary vanadium carbonitrates. The steel has significantly greater wear resistance than the high-speed steel SW18, with almost the same grindability.
Der Werkzeugstahl enthält:
Die Härte nach dem Weichglühen beträgt 227 HV. Die Charakteristiken des Härtens und Anlassens dieses Stahles ermöglichen seine Anwendung sowohl in der Kaltbearbeitung als auch in der Warmbearbeitung. Falls man den Stahl zum Kaltbearbeiten verwendet und die erforderliche Härte 58 - 60 HRC beträgt, wird er von 1173 K in dem Wasser gehärtet und bei 473 K angelassen. Die Wärmebehandlung gewährleistet die notwendige Rotgluthärte bei der Warmbearbeitung in dem Bereich von 873 - 923 K, die nach dem Härten von 1553 K in Öl und Anlassen bei 843 K besteht.The hardness after soft annealing is 227 HV. The hardening and tempering characteristics of this steel enable it to be used in both cold and hot working. If the steel is used for cold working and the required hardness is 58 - 60 HRC, it is hardened from 1173 K in the water and tempered at 473 K. The heat treatment ensures the necessary red glow hardness during hot working in the range from 873 - 923 K, which after hardening from 1553 K in oil and tempering at 843 K.
Der Stahl mit der obengenannten chemischen Zusammensetzung wurde eingesetzt für Schneidlaschen von Bimetallmessern zum Papierschneiden anstatt des bis jetzt angewandten Stahles mit der mittleren chemischen Grundzusammensetzung: 1,20 % C, 0,50 % Cr, 1,2 % W, 0,15 % V. Die Anwendung des erfindungsgemäßen Stahles ermöglicht eine Arbeitszeitverlängerung dieser Messer ohne Abstumpfen von 4 bis 8 Stunden, wobei gleichzeitig die Zahl der Nachschleifmöglichkeit dieser Messer ungefähr um 80 % vergrößert wird.The steel with the chemical composition mentioned above was used for cutting tabs of bimetallic knives for paper cutting instead of the previously used steel with the average chemical basic composition: 1.20% C, 0.50% Cr, 1.2% W, 0.15% V The use of the steel according to the invention makes it possible to extend the working time of these knives without dulling them from 4 to 8 hours, at the same time increasing the number of regrinding options for these knives by approximately 80%.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL25670185A PL256701A1 (en) | 1985-12-06 | 1985-12-06 | Alloyed tool steel of high resistance to abrasive wear |
| PL256701 | 1985-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0230576A1 true EP0230576A1 (en) | 1987-08-05 |
Family
ID=20029399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86116867A Withdrawn EP0230576A1 (en) | 1985-12-06 | 1986-12-04 | Alloyed tool steel with high wear-resistance |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0230576A1 (en) |
| PL (1) | PL256701A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4944268A (en) * | 1988-11-17 | 1990-07-31 | Robert Bosch Gmbh | Apparatus for varying the position of a control device of an internal combustion engine |
| WO2007121542A1 (en) * | 2006-04-24 | 2007-11-01 | Villares Metals S/A | High-speed steel for saw blades |
| WO2014118310A1 (en) | 2013-02-01 | 2014-08-07 | Duma-Bandzink Gmbh | Alloy steel for rollers, bearings, and bushings in galvanizing systems, such rollers, bearings, or bushings, and method for producing such rollers, bearings, or bushings |
| EP2975146A1 (en) * | 2014-07-16 | 2016-01-20 | Uddeholms AB | Cold work tool steel |
| CN114318135A (en) * | 2021-03-22 | 2022-04-12 | 武汉钜能科技有限责任公司 | Wear-resistant high-speed steel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3012879A (en) * | 1960-02-24 | 1961-12-12 | Crucible Steel Co America | Nitrogen containing tool steels |
-
1985
- 1985-12-06 PL PL25670185A patent/PL256701A1/en unknown
-
1986
- 1986-12-04 EP EP86116867A patent/EP0230576A1/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3012879A (en) * | 1960-02-24 | 1961-12-12 | Crucible Steel Co America | Nitrogen containing tool steels |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4944268A (en) * | 1988-11-17 | 1990-07-31 | Robert Bosch Gmbh | Apparatus for varying the position of a control device of an internal combustion engine |
| WO2007121542A1 (en) * | 2006-04-24 | 2007-11-01 | Villares Metals S/A | High-speed steel for saw blades |
| WO2014118310A1 (en) | 2013-02-01 | 2014-08-07 | Duma-Bandzink Gmbh | Alloy steel for rollers, bearings, and bushings in galvanizing systems, such rollers, bearings, or bushings, and method for producing such rollers, bearings, or bushings |
| EP2975146A1 (en) * | 2014-07-16 | 2016-01-20 | Uddeholms AB | Cold work tool steel |
| EP3169821A4 (en) * | 2014-07-16 | 2017-06-28 | Uddeholms AB | Cold work tool steel |
| US10472705B2 (en) | 2014-07-16 | 2019-11-12 | Uddeholms Ab | Cold work tool steel |
| CN114318135A (en) * | 2021-03-22 | 2022-04-12 | 武汉钜能科技有限责任公司 | Wear-resistant high-speed steel |
Also Published As
| Publication number | Publication date |
|---|---|
| PL256701A1 (en) | 1987-09-21 |
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Inventor name: KALISZEWSKI, EDMUND, DR. ING. Inventor name: KRAWIARZ, JERZY, DR. ING. Inventor name: WOZNIAK, REMIGIUSZ, DR. ING. |