EP0130177B1 - Sintered iron-base alloy - Google Patents
Sintered iron-base alloy Download PDFInfo
- Publication number
- EP0130177B1 EP0130177B1 EP19840890116 EP84890116A EP0130177B1 EP 0130177 B1 EP0130177 B1 EP 0130177B1 EP 19840890116 EP19840890116 EP 19840890116 EP 84890116 A EP84890116 A EP 84890116A EP 0130177 B1 EP0130177 B1 EP 0130177B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- content
- iron
- base alloy
- alloys
- 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.)
- Expired
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- 229910045601 alloy Inorganic materials 0.000 title claims description 35
- 239000000956 alloy Substances 0.000 title claims description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 239000010955 niobium Substances 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052715 tantalum Inorganic materials 0.000 claims description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000005482 strain hardening Methods 0.000 claims 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000005272 metallurgy Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
Definitions
- the present invention relates to an iron-based sintered alloy, especially for cold work tools.
- a sintered alloy for internal combustion engines which, in addition to carbon, chromium, niobium, molybdenum and nickel, expands a minimum content of 0.1% by weight of phosphorus, as a result of which a liquid phase sintering at temperatures below 1,250 ° C. should be achieved.
- Such an alloy is provided for valve seats, piston rings and the like.
- Ledeburitic steels with 12% chromium and a carbon content of around 3% have a particularly high carbide content of around 30% by volume. A hardness of approx. 66 to 70 HRc can be achieved with this. These steels are characterized by high hardenability and excellent wear resistance as well as small dimensional changes during hardening. The mechanical strength and the hot formability are relatively low. In order to increase the hot formability, it has already been proposed to remelt such alloys using the electro-slag remelting method. As a result, a slight increase in mechanical strength can be achieved, while at the same time there is an improvement in the hot deformability to approximately twice the value.
- the object of the present invention is now to provide an iron-based sintered alloy which has an increased carbide content, has increased mechanical strength values compared to a corresponding alloy obtained by melt metallurgy and which has a longer service life due to the increased carbide content , and which has a high thermoformability based on the carbide content.
- the sintered alloy based on iron, in particular for cold work tools, has a content in% by weight Remainder iron and manufacturing-related impurities 25.
- a tool e.g. B. ram, cutting tools, stone working tools, punching tools and. Like. are obtained, which has a high hardness and thus dimensional stability.
- the simultaneous presence of vanadium and tungsten results in a better hardening depth, whereby a higher hardness is caused by the niobium content.
- An additional content of 0.4 to 0.7% by weight of manganese also improves the sinterability of the alloy.
- the alloy can additionally have a content of 0.05 to 2.0% by weight of tantalum.
- the alloy has a content of between 0.02 and 2.0% by weight of boron, it is completely surprising that the hot-formability is fully retained, and at the same time the service life can be increased via the boride content.
- the alloys listed in Table 1 were produced by melt metallurgy, part of the melt being poured off directly, and another part being held in order to obtain the desired powder in a nitrogen atomization process. This powder was obtained by hot isostatic pressing at a temperature of approximately 1,050 ° C at 1 000 bar and exposure time 3 hours. Samples were produced from the pressed bodies or casting blocks obtained in this way, which were then subjected to the tests. To determine the twist rate at 1,100 ° C., the samples were heated to 1,100 ° C. and held at this temperature for 15 minutes and then twisted in a warm torsion device until they broke. To determine the flexural strength ( QbB ), the sample was adjusted to a hardness of 63 HRc by tempering.
- Table 2 shows the hardness, the flexural strength and the number of twists up to Fracture at 1100 ° C of the cast samples compared with those obtained by sinter metallurgy. This comparison shows, on the one hand, that the hardness values of the alloys obtained by sinter metallurgy are the same or slightly higher than the comparative alloy. In contrast, the flexural strength of the powder metallurgical alloys is in any case higher. The speed of rotation of sintered metallurgical alloys is significantly higher than that of cast samples.
- Alloy 2 has good hot formability despite the increased carbon content.
- tantalum does not impair the strength and a corresponding deformability is still maintained.
- the increased tantalum and niobium content shows a reduction in the flexural strength and the deformability, which is directly attributable to the increased proportion of carbides.
- this increases the wear resistance.
- niobium increases the wear resistance, whereby both the flexural strength and the warm torsion resistance are reduced.
- alloys 8 and 10 the hot-formability is extremely poor in the cast alloys, whereas this has been retained in the powder-metallurgical alloy.
- Silicon increases the strength, as can be seen from the values for alloys 9 and 10.
- the properties of alloy 11 essentially correspond to those of alloy 7, the addition of manganese increasing the sinterability. Due to the high carbon content of alloy 12, the cast alloy has extremely low values, whereas the powder metallurgical values still correspond.
- the statements for alloy 13 correspond to those for alloy 12. Alloy 14 has a higher strength due to the increased silicon content. the deformability is still fully given. (See tables 1 and 2 page 4 ff,)
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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)
Description
Die vorliegende Erfindung bezieht sich auf eine Sinterlegierung auf Eisenbasis, insbesondere für Kaltarbeitswerkzeuge.The present invention relates to an iron-based sintered alloy, especially for cold work tools.
Aus der DE-OS 22 04 886 wird eine Legierung mit etwa 5 Gew.-% Molybdän, 6 Gew.-% Wolfram, 4 Gew.-% Chrom, 2 Gew.-% Vanadium, 1 Gew.-% Kohlenstoff und Rest Eisen bekannt, die durch Mischung einer Legierung aus 24 Gew.-% Wolfram, 17 Gew.-% Chrom, 8 Gew.-% Vanadium, 19 Gew.-% Molybdän, 2 Gew.-% Silizium und 4 Gew.-% Kohlenstoff und einem duktilen Eisenpulver mit nachfolgendem Verpressen und Sintern erhalten wird.From DE-OS 22 04 886 an alloy with about 5 wt .-% molybdenum, 6 wt .-% tungsten, 4 wt .-% chromium, 2 wt .-% vanadium, 1 wt .-% carbon and the rest iron known by mixing an alloy of 24 wt .-% tungsten, 17 wt .-% chromium, 8 wt .-% vanadium, 19 wt .-% molybdenum, 2 wt .-% silicon and 4 wt .-% carbon and a ductile iron powder with subsequent pressing and sintering is obtained.
Aus der DE-OS 30 15 897 wird eine Sinterlegierung für Verbrennungsmotoren bekannt, die neben Kohlenstoff, Chrom, Niob, Molybdän und Nickel einen Mindestgehalt von 0,1 Gew.-% Phosphor ausweit, wodurch ein Flüssigphasensintern bei Temperaturen unterhalb von 1 250 °C erreicht werden soll. Eine derartige Legierung ist für Ventilsitze, Kolbenringe und dgl. vorgesehen.From DE-OS 30 15 897 a sintered alloy for internal combustion engines is known which, in addition to carbon, chromium, niobium, molybdenum and nickel, expands a minimum content of 0.1% by weight of phosphorus, as a result of which a liquid phase sintering at temperatures below 1,250 ° C. should be achieved. Such an alloy is provided for valve seats, piston rings and the like.
12 % Chrom aufweisende ledeburitische Stähle mit einem Kohlenstoff-Gehalt von etwa 3 %, weisen einen besonders hohen Carbidanteil von ca. 30 Vol.-% auf. Damit läßt sich eine Härte von ca. 66 bis 70 HRc erreichen. Diese Stähle zeichnen sich durch hohe Härtbarkeit und ausgezeichnete Verschleißbeständigkeit sowie geringe Maßänderungen beim Härten aus. Die mechanische Festigkeit sowie die Warmverformbarkeit ist relativ gering. Um die Warmverformbarkeit zu erhöhen, wurde bereits vorgeschlagen, derartige Legierungen mit dem Elektroschlackeumschmelzvertahren umzuschmelzen. Dadurch kann zwar eine leichte Steigerung der mechanischen Festigkeit erreicht werden, wobei gleichzeitig eine Verbesserung der Warmverformbarkeit auf ca. den doppelten Wert eintritt.Ledeburitic steels with 12% chromium and a carbon content of around 3% have a particularly high carbide content of around 30% by volume. A hardness of approx. 66 to 70 HRc can be achieved with this. These steels are characterized by high hardenability and excellent wear resistance as well as small dimensional changes during hardening. The mechanical strength and the hot formability are relatively low. In order to increase the hot formability, it has already been proposed to remelt such alloys using the electro-slag remelting method. As a result, a slight increase in mechanical strength can be achieved, while at the same time there is an improvement in the hot deformability to approximately twice the value.
Die Aufgabe der vorliegenden Erfindung besteht nun darin, eine Sinterlegierung auf Eisenbasis zu schaffen, die einen erhöhten Gehalt an Carbiden aufweist, gesteigerte Werte in der mechanischen Festigkeit gegenüber einer entsprechenden schmelzmetallurgisch gewonnenen Legierung besitzt, die auf Grund des erhöhten Carbid-Gehaltes eine höhere Standzeit aufweist, und die bezogen auf den Carbid-Gehalt eine hohe Warmverformbarkeit aufweist.The object of the present invention is now to provide an iron-based sintered alloy which has an increased carbide content, has increased mechanical strength values compared to a corresponding alloy obtained by melt metallurgy and which has a longer service life due to the increased carbide content , and which has a high thermoformability based on the carbide content.
Die erfindungsgemäße Sinterlegierung auf Eisenbasis, insbesondere für Kaltarbeitswerkzeuge, weist in Gew.-% einen Gehalt an
Durch den hohen Anteil an Kohlenstoff und an Carbidbildnern kann ein Werkzeug, z. B. Preßstempel, Schneidwerkzeuge, Gesteinsbearbeitungswerkzeuge, Stanzwerkzeuge u. dgl., erhalten werden, das eine hohe Härte und damit Formbeständigkeit aufweist. Durch die gleichzeitige Anwesenheit von Vanadium und Wolfram wird eine bessere Einhärttiefe erreicht, wobei über den Niob-Gehalt eine höhere Härte bedingt wird.Due to the high proportion of carbon and carbide formers, a tool, e.g. B. ram, cutting tools, stone working tools, punching tools and. Like. Are obtained, which has a high hardness and thus dimensional stability. The simultaneous presence of vanadium and tungsten results in a better hardening depth, whereby a higher hardness is caused by the niobium content.
Völlig überraschend war, daß bei Zusatz von zwischen 0,2 und 0,5 Gew.-% Silizium eine Steigerung der mechanischen Festigkeit zu erreichen ist. Dieser Effekt könnte darauf zurückzuführen sein, daß bei der Herstellung des Metallpulvers sich der Silizium-Gehalt günstiger auf die sphärische Ausgestaltung der einzelnen Partikelchen auswirkt, wodurch ein günstigeres Sinterverhalten eintritt.It was completely surprising that with the addition of between 0.2 and 0.5% by weight of silicon an increase in the mechanical strength can be achieved. This effect could be due to the fact that the silicon content has a more favorable effect on the spherical configuration of the individual particles during the production of the metal powder, as a result of which a more favorable sintering behavior occurs.
Ein zusätzlicher Gehalt von 0,4 bis 0,7 Gew.-% Mangan bewirkt ebenfalls eine bessere Sinterfähigkeit der Legierung.An additional content of 0.4 to 0.7% by weight of manganese also improves the sinterability of the alloy.
Um die Standzeit des Werkzeuges zu erhöhen, kann zusätzlich die Legierung einen Gehalt zwischen 0,05 bis 2,0 Gew.-% Tantal aufweisen.In order to increase the service life of the tool, the alloy can additionally have a content of 0.05 to 2.0% by weight of tantalum.
Weist die Legierung einen Gehalt zwischen 0,02 und 2,0 Gew.-% Bor auf, so zeigt sich völlig überraschend, daß die Warmverformbarkeit voll erhalten bleibt, wobei gleichzeitig über den Borid-Gehalt eine Erhöhung der Standzeit eintreten kann.If the alloy has a content of between 0.02 and 2.0% by weight of boron, it is completely surprising that the hot-formability is fully retained, and at the same time the service life can be increased via the boride content.
Im folgenden wird die Erfindung anhand der Beispiele näher erläutert.The invention is explained in more detail below with the aid of the examples.
Die in der Tabelle 1 angegebenen Legierungen wurden schmelzmetallurgisch hergestellt, wobei ein Teil der Schmelze direkt abgegossen wurde, und ein weiterer Teil zur Gewinnung des gewünschten Pulvers im Stickstoff-Verdüsungsverfahren gehalten wurde, Dieses Pulver wurde durch heißisostatisches Verpressen bei einer Temperatur von ca. 1 050 °C bei 1 000 Bar und Einwirkungszeit 3 Stunden, verarbeitet. Aus den so gewonnenen Preßkörpern bzw. Gußblöcken wurden Proben hergestellt, die sodann den Untersuchungen unterworfen wurden. Zur Bestimmung der Verdrehzahl bei 1 100 °C wurden die Proben auf 1 100 °C erhitzt und 15 min auf dieser Temperatur gehalten und sodann in einer Warmtorsionseinrichtung bis zum Bruch verdreht. Zur Bestimmung der Biegebruchfestigkeit (QbB) wurde die Probe durch Vergüten auf eine Härte von 63 HRc eingestellt.The alloys listed in Table 1 were produced by melt metallurgy, part of the melt being poured off directly, and another part being held in order to obtain the desired powder in a nitrogen atomization process. This powder was obtained by hot isostatic pressing at a temperature of approximately 1,050 ° C at 1 000 bar and exposure time 3 hours. Samples were produced from the pressed bodies or casting blocks obtained in this way, which were then subjected to the tests. To determine the twist rate at 1,100 ° C., the samples were heated to 1,100 ° C. and held at this temperature for 15 minutes and then twisted in a warm torsion device until they broke. To determine the flexural strength ( QbB ), the sample was adjusted to a hardness of 63 HRc by tempering.
In der Tabelle 2 sind die Härte, die Biegebruchfestigkeit sowie die Anzahl der Verdrehung bis zum Bruch bei 1100°C von den gegossenen Proben, denjenigen, die auf sintermetallurgischem Wege gewonnen wurden, gegenübergestellt. Dieser Gegenüberstellung kann man einerseits entnehmen, daß die Härtewerte der sintermetallurgisch gewonnenen Legierungen gleich bzw. geringfügig höher als der Vergleichslegierung liegen. Demgegenüber liegt die Biegebruchfestigkeit der pulvermetallurgischen Legierungen jedenfalls höher. Die Verdrehzahl liegt bei den sintermetallurgischen Legierungen wesentlich höher als bei den gegossenen Proben.Table 2 shows the hardness, the flexural strength and the number of twists up to Fracture at 1100 ° C of the cast samples compared with those obtained by sinter metallurgy. This comparison shows, on the one hand, that the hardness values of the alloys obtained by sinter metallurgy are the same or slightly higher than the comparative alloy. In contrast, the flexural strength of the powder metallurgical alloys is in any case higher. The speed of rotation of sintered metallurgical alloys is significantly higher than that of cast samples.
Die Legierung 2 weist trotz des erhöhten Kohlenstoffgehaltes gute Warmverformbarkeit auf. Wie bei Legierung 3 zu entnehmen, beeinträchtigt Tantal nicht die Festigkeit und eine entsprechende Verformbarkeit bleibt weiterhin erhalten. Bei den Legierungen 4. 5 und 6 kann durch den erhöhten Tantal- und Niobgehalt eine Absenkung der Biegefestigkeit und der Verformbarkeit festgestellt werden, was unmittelbar auf den erhöhten Anteil von Carbiden zurückzuführen ist. Allerdings wird dadurch die Verschleißfestigkeit angehoben. Ein Zusatz von Niob erhöht, wie bei Legierung 7 zu entnehmen, die Verschleißbeständigkeit, wobei sowohl die Biegebruchfestigkeit als auch die Warmtorsionsbeständigkeit erniedrigt wird. Bei den Legierungen 8 und 10 ist die Warmverformbarkeit bei den Gußlegierungen außerordentlich schlecht, wohingegen diese bei der pulvermetallurgischen Legierung erhalten geblieben ist. Silizium erhöht, wie den Werten zu den Legierungen 9 und 10 zu entnehmen, die Festigkeit. Die Eingenschaften der Legierung 11 entsprechen im wesentlichen jenen der Legierung 7, wobei der Zusatz von Mangan die Sinterbarkeit erhöht. Auf Grund des hohen Kohlenstoffgehaltes der Legierung 12 weist die Gußlegierung außerordentlich niedrige Werte auf, wohingegen die pulvermetallurgischen Werte durchaus noch entsprechen. Die Aussagen für die Legierung 13 entsprechen jenen für die Legierung 12. Die Legierung 14 weist auf Grund des erhöhten Siliziumgehaltes eine höhere Festigkeit auf. wobei die Verformbarkeit noch voll gegeben ist.
(Siehe Tabellen 1 und 2 Seite 4 ff,)
(See tables 1 and 2 page 4 ff,)
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT2316/83 | 1983-06-23 | ||
| AT0231683A AT383619B (en) | 1983-06-23 | 1983-06-23 | IRON-BASED SINTER ALLOY |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0130177A1 EP0130177A1 (en) | 1985-01-02 |
| EP0130177B1 true EP0130177B1 (en) | 1986-12-03 |
Family
ID=3532106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19840890116 Expired EP0130177B1 (en) | 1983-06-23 | 1984-06-20 | Sintered iron-base alloy |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0130177B1 (en) |
| AT (1) | AT383619B (en) |
| DE (1) | DE3461548D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10124411B2 (en) | 2008-04-08 | 2018-11-13 | Federal-Mogul Llc | Method for producing powder metal compositions for wear and temperature resistance applications and method of producing same |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT391324B (en) * | 1987-12-23 | 1990-09-25 | Boehler Gmbh | POWDER METALLURGICALLY PRODUCED FAST WORK STEEL, WEARING PART MADE THEREOF AND METHOD FOR THE PRODUCTION THEREOF |
| AU4887796A (en) * | 1995-03-10 | 1996-10-02 | Powdrex Limited | Stainless steel powders and articles produced therefrom by powder metallurgy |
| US9546412B2 (en) | 2008-04-08 | 2017-01-17 | Federal-Mogul Corporation | Powdered metal alloy composition for wear and temperature resistance applications and method of producing same |
| US9624568B2 (en) * | 2008-04-08 | 2017-04-18 | Federal-Mogul Corporation | Thermal spray applications using iron based alloy powder |
| KR20150132856A (en) * | 2013-03-15 | 2015-11-26 | 페더럴-모걸 코오포레이숀 | Powder metal compositions for wear and temperature resistance applications and method of producing same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3591349A (en) * | 1969-08-27 | 1971-07-06 | Int Nickel Co | High carbon tool steels by powder metallurgy |
| SE344968C (en) * | 1970-08-28 | 1976-02-02 | Hoeganaes Ab | POWDER MATERIAL FOR THE MANUFACTURE OF HIGH ALLOY STEEL WITH GOOD TURNING RESISTANCE AND HEAT HARDNESS |
| DE2141786A1 (en) * | 1971-08-20 | 1973-02-22 | Boehler & Co Ag Geb | USE OF LEDEBURITIC CHROME STEELS FOR THE PRODUCTION OF FORMING TOOLS FOR CHIPLESS FORMING WITH HIGH PRESSURE CAPACITY AND CUTTING EDGES |
| DE2324071A1 (en) * | 1972-05-18 | 1973-12-06 | Stora Kopparbergs Bergslags Ab | COLD MACHINING STEEL, ESPECIALLY FOR CHIPPING MACHINING |
| US4249945A (en) * | 1978-09-20 | 1981-02-10 | Crucible Inc. | Powder-metallurgy steel article with high vanadium-carbide content |
-
1983
- 1983-06-23 AT AT0231683A patent/AT383619B/en not_active IP Right Cessation
-
1984
- 1984-06-20 DE DE8484890116T patent/DE3461548D1/en not_active Expired
- 1984-06-20 EP EP19840890116 patent/EP0130177B1/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10124411B2 (en) | 2008-04-08 | 2018-11-13 | Federal-Mogul Llc | Method for producing powder metal compositions for wear and temperature resistance applications and method of producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA231683A (en) | 1986-12-15 |
| EP0130177A1 (en) | 1985-01-02 |
| DE3461548D1 (en) | 1987-01-15 |
| AT383619B (en) | 1987-07-27 |
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