EP1548137A1 - Verwendung einer Hartmetalllegierung für Werkzeuge - Google Patents
Verwendung einer Hartmetalllegierung für Werkzeuge Download PDFInfo
- Publication number
- EP1548137A1 EP1548137A1 EP04029954A EP04029954A EP1548137A1 EP 1548137 A1 EP1548137 A1 EP 1548137A1 EP 04029954 A EP04029954 A EP 04029954A EP 04029954 A EP04029954 A EP 04029954A EP 1548137 A1 EP1548137 A1 EP 1548137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hard metal
- metal alloy
- forming
- binder
- weight
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Definitions
- the invention relates to the use of a hard metal alloy for tools for forming at forming temperatures of more than 600 ° C.
- Tools for forming materials at elevated temperatures are high mechanical, thermal and tribological stresses subjected.
- the applied forming temperatures depend on the type of From the material to be formed and the forming process and lie For example, in brass at about 600 ° C, in steel at about 800 ° C and at Glass at about 1300 ° C.
- Important forming processes at elevated temperatures are, for example, pressure and tensile forming, extrusion, rolling and Pull. When forming at elevated temperatures, it comes next to the general wear of the forming tool often also to a break the tool of the by hot cracking, temperature shock and Adhesive wear is caused.
- EP 0 062 311 B1 describes a tungsten carbide alloy for tungsten carbide thermoforming parts having a binder phase of chromium, aluminum, nickel and cobalt and optionally small amounts of molybdenum, boron and zirconium, wherein the binder phase comprises fine particles of precipitated Ni 3 Al ⁇ 'phase contains.
- this hard metal alloy still does not have a sufficiently good wear resistance at elevated temperature and is more expensive to produce than conventional hard metal alloys without such a phase due to the ⁇ 'Phase in the binder.
- the object of the present invention is to provide a hard metal alloy for the To provide forming at forming temperatures above 600 ° C, the compared to previously known alloys a much better Has wear resistance and is easy to produce.
- hard metal alloy according to the invention with 75 to 95 wt.% hard material phase consisting essentially of tungsten carbide 5 to 25% by weight of binder phase, which consists of 60 to 80% by weight of iron.
- the best properties of the hard metal alloy according to the invention are achieved with tungsten carbide as hard material phase.
- tungsten carbide as hard material phase.
- other hard materials such as titanium carbide, tantalum carbide or
- niobium carbide is also possible because of the excellent High temperature properties of the hard metal alloy according to the invention not be significantly worsened.
- the preparation of the hard metal alloy according to the invention is carried out by conventional, powder metallurgical production process by pressing the powdered starting materials and subsequent sintering in one Temperature range from 1,350 to 1,450 ° C.
- binder phase in addition to iron Nickel and cobalt are present.
- a particularly advantageous hard metal alloy for the invention Use is when the binder phase consists of 70% by weight of iron, 20 wt.% Nickel and 10 wt.% Cobalt.
- the hard metal alloy according to the invention has proven particularly suitable for Production of tools for die forming or extrusion of Articles made of steel, where usually forming temperatures of more than 1,000 ° C to about 1,200 ° C are used.
- a hard metal alloy according to the invention consisting of 88% by weight Tungsten carbide with a mean grain size of 3 microns and 12 wt.% Binder with 70% by weight of iron, 10% by weight of cobalt and 20% by weight of nickel plate-shaped samples 1 with a trapezoidal cross-section of 28 x 6 mm and a prism length of 28 mm. These were the powdery Mixed starting materials and the powder mixture on a Matrizenpresse at a pressure of 180 MPa to the plate-shaped Blanks pressed. Then the pressed blanks were through Milling machined to final size. Subsequently, the samples were added Sintered at 1,400 ° C for 60 minutes. This was followed by a gas treatment with hydrogen at 900 ° C for 60 minutes.
- Table 1 summarizes the evaluations with regard to hardness, toughness and abrasion of the steel bolt of the different samples.
- Sample number Binder content% by weight Vickers hardness HV Toughness according to Palmquist M Pam 1/2 Steel bolt wear mm / 2500 strokes 1 according to the invention 12 1380 11.3 71 2 comparative alloy 6 1510 11.5 61 3 comparative alloy 5 1990 8.95 64 4 comparative alloy 6 1690 9.25 56 5 comparative alloy 7 1520 9.75 64 6 comparative alloy 3 1200 7.2 71 7 comparative alloy 12 1090 17 65
- the hard metal alloy according to the invention in view of the high binder content compared to the sample 7 to a surprisingly high hardness, which prevents plastic deformation, scoring and Materialaufsch spasch with sufficient certainty.
- the toughness of the alloy according to the invention is practically better everywhere compared to the difference samples 2 to 6, only approximately equivalent in one case.
- the alloy according to the invention has excellent values both in terms of hardness and toughness.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Aus der Beschreibung geht lediglich eine besonders hohe Abriebbeständigkeit hervor, ein Hinweis zur Eignung dieser Legierung für Verschleißanwendungen bei erhöhter Temperatur ist der Beschreibung nicht zu entnehmen.
- aus einer Hartmetalllegierung, bestehend aus 94 Gew.% Wolframkarbid mit einer mittleren Korngröße von 6 µm, Rest Kobalt als Probe 2
- aus einer Hartmetalllegierung, bestehend aus 95 Gew.% Wolframkarbid mit einer mittleren Korngröße von 0,8 µm, Rest Kobalt mit 0,8 Gew.% Chromzusatz als Probe 3
- eine Hartmetalllegierung, bestehend aus 94 Gew.% Wolframkarbid mit einer mittleren Korngröße von 1,5 µm, Rest Kobalt mit 4 Gew.% Titankarbid und 6 Gew.% Tantalkarbidzusatz als Probe 4
- eine Hartmetalllegierung, bestehend aus 93 Gew.% Wolframkarbid mit einer mittleren Korngröße von 6 µm, Rest Kobalt mit 0,7 Gew.% Chromkarbidzusatz als Probe 5
- eine Hartmetalllegierung, bestehend aus 97 Gew.% Wolframkarbid mit einer mittleren Korngröße von 6 µm, Rest Kobalt mit 0,7 Gew.% Chromkarbidzusatz als Probe 6
- eine Hartmetalllegierung, bestehend aus 88 Gew.% Wolframkarbid mit einer mittleren Korngröße von 3 µm, Rest Kobalt als Probe 7.
| Probe Nummer | Bindergehalt Gew.% | Vickershärte HV | Zähigkeit nach Palmquist M Pam 1/2 | Stahlbolzenabrieb mm/2500 Hüben |
| 1 erfindungsgemäß | 12 | 1.380 | 11,3 | 71 |
| 2 Vergleichslegierung | 6 | 1.510 | 11,5 | 61 |
| 3 Vergleichslegierung | 5 | 1.990 | 8,95 | 64 |
| 4 Vergleichslegierung | 6 | 1.690 | 9,25 | 56 |
| 5 Vergleichslegierung | 7 | 1.520 | 9,75 | 64 |
| 6 Vergleichslegierung | 3 | 1.200 | 7,2 | 71 |
| 7 Vergleichslegierung | 12 | 1.090 | 17 | 65 |
Die erfindungsgemäße Legierung weist also sowohl hinsichtlich Härte als auch hinsichtlich Zähigkeit ausgezeichnete Werte auf.
Claims (6)
- Verwendung einer Hartmetalllegierung mit 75 bis 95 Gew.% Hartstoffphase aus im wesentlichen Wolframkarbid und 5 bis 25 Gew.% Bindephase, die zu 60 bis 80 Gew.% aus Eisen besteht, für Werkzeuge zur Umformung bei Umformtemperaturen von mehr als 600°C.
- Verwendung einer Hartmetalllegierung nach Anspruch 1, dadurch gekennzeichnet, dass die Hartstoffphase aus 80 bis 90 Gew.% und die Bindephase aus 10 bis 20 Gew.% besteht.
- Verwendung einer Hartmetalllegierung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass als Ausgangsmaterial für die Hartstoffphase Wolframkarbid mit einer mittleren Korngröße im Bereich von 1,5 bis 6 µm verwendet wird.
- Verwendung einer Hartmetalllegierung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Rest der Bindephase aus Nickel und Kobalt besteht.
- Verwendung einer Hartmetalllegierung nach Anspruch 4, dadurch gekennzeichnet, dass die Bindephase aus 70 Gew.% Eisen, 20 Gew.% Nickel und 10 Gew.% Kobalt besteht.
- Verwendung einer Hartmetalllegierung nach einem der Ansprüche 1 bis 5 für ein Werkzeug zum Gesenkumformen oder Fließpressen von Gegenständen aus Stahl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL04029954T PL1548137T3 (pl) | 2003-12-22 | 2004-12-17 | Zastosowanie stopu twardego lanego do narzędzi |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0091103U AT7056U1 (de) | 2003-12-22 | 2003-12-22 | Verwendung einer hartmetalllegierung für werkzeuge |
| AT9112003U | 2003-12-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1548137A1 true EP1548137A1 (de) | 2005-06-29 |
| EP1548137B1 EP1548137B1 (de) | 2007-02-07 |
Family
ID=32686580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04029954A Expired - Lifetime EP1548137B1 (de) | 2003-12-22 | 2004-12-17 | Verwendung einer Hartmetalllegierung für Werkzeuge |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1548137B1 (de) |
| AT (2) | AT7056U1 (de) |
| DE (1) | DE502004002851D1 (de) |
| PL (1) | PL1548137T3 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349862A (zh) * | 2012-05-30 | 2015-02-11 | 贝泰克两合公司 | 耐磨元件 |
| EP3741195A1 (de) * | 2019-05-23 | 2020-11-25 | BOEHLERIT GmbH & Co.KG. | Hartmetalleinsatz |
| CN112118927A (zh) * | 2018-03-12 | 2020-12-22 | 森拉天时奥地利有限公司 | 烧结接合的复合体的生产方法 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3746519A (en) * | 1970-02-18 | 1973-07-17 | Sumitomo Electric Industries | High strength metal bonded tungsten carbide base composites |
| US3993446A (en) * | 1973-11-09 | 1976-11-23 | Dijet Industrial Co., Ltd. | Cemented carbide material |
| US4339272A (en) * | 1979-06-29 | 1982-07-13 | National Research Development Corporation | Tungsten carbide-based hard metals |
| EP0085125A1 (de) * | 1982-02-01 | 1983-08-10 | General Electric Company | Gebundene Carbidmischungen und Verfahren ihrer Herstellung |
| US4466829A (en) * | 1981-04-06 | 1984-08-21 | Mitsubishi Kinzoku Kabushiki Kaisha | Tungsten carbide-base hard alloy for hot-working apparatus members |
| JPS61194147A (ja) * | 1985-02-22 | 1986-08-28 | Hitachi Metals Ltd | 超硬合金 |
| US4698884A (en) * | 1983-03-28 | 1987-10-13 | Kennametal Inc. | Roll for hot forming steel rod |
| EP0819490A1 (de) * | 1996-07-19 | 1998-01-21 | Sandvik Aktiebolag | Walze zum Warmwalzen mit erhöhter Beständigkeit gegen Bruch und Verschleiss |
-
2003
- 2003-12-22 AT AT0091103U patent/AT7056U1/de not_active IP Right Cessation
-
2004
- 2004-12-17 DE DE502004002851T patent/DE502004002851D1/de not_active Expired - Lifetime
- 2004-12-17 AT AT04029954T patent/ATE353376T1/de active
- 2004-12-17 PL PL04029954T patent/PL1548137T3/pl unknown
- 2004-12-17 EP EP04029954A patent/EP1548137B1/de not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3746519A (en) * | 1970-02-18 | 1973-07-17 | Sumitomo Electric Industries | High strength metal bonded tungsten carbide base composites |
| US3993446A (en) * | 1973-11-09 | 1976-11-23 | Dijet Industrial Co., Ltd. | Cemented carbide material |
| US4339272A (en) * | 1979-06-29 | 1982-07-13 | National Research Development Corporation | Tungsten carbide-based hard metals |
| US4466829A (en) * | 1981-04-06 | 1984-08-21 | Mitsubishi Kinzoku Kabushiki Kaisha | Tungsten carbide-base hard alloy for hot-working apparatus members |
| EP0085125A1 (de) * | 1982-02-01 | 1983-08-10 | General Electric Company | Gebundene Carbidmischungen und Verfahren ihrer Herstellung |
| US4698884A (en) * | 1983-03-28 | 1987-10-13 | Kennametal Inc. | Roll for hot forming steel rod |
| JPS61194147A (ja) * | 1985-02-22 | 1986-08-28 | Hitachi Metals Ltd | 超硬合金 |
| EP0819490A1 (de) * | 1996-07-19 | 1998-01-21 | Sandvik Aktiebolag | Walze zum Warmwalzen mit erhöhter Beständigkeit gegen Bruch und Verschleiss |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 011, no. 018 (C - 398) 17 January 1987 (1987-01-17) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349862A (zh) * | 2012-05-30 | 2015-02-11 | 贝泰克两合公司 | 耐磨元件 |
| CN112118927A (zh) * | 2018-03-12 | 2020-12-22 | 森拉天时奥地利有限公司 | 烧结接合的复合体的生产方法 |
| EP3741195A1 (de) * | 2019-05-23 | 2020-11-25 | BOEHLERIT GmbH & Co.KG. | Hartmetalleinsatz |
Also Published As
| Publication number | Publication date |
|---|---|
| AT7056U1 (de) | 2004-09-27 |
| EP1548137B1 (de) | 2007-02-07 |
| PL1548137T3 (pl) | 2007-07-31 |
| DE502004002851D1 (de) | 2007-03-22 |
| ATE353376T1 (de) | 2007-02-15 |
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