EP0814172B1 - PM-Warmarbeitsstahl und Verfahren zu dessen Herstellung - Google Patents
PM-Warmarbeitsstahl und Verfahren zu dessen Herstellung Download PDFInfo
- Publication number
- EP0814172B1 EP0814172B1 EP96109706A EP96109706A EP0814172B1 EP 0814172 B1 EP0814172 B1 EP 0814172B1 EP 96109706 A EP96109706 A EP 96109706A EP 96109706 A EP96109706 A EP 96109706A EP 0814172 B1 EP0814172 B1 EP 0814172B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- capsules
- hot
- steel
- powder
- pressure
- 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.)
- Revoked
Links
Images
Classifications
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
-
- 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
- C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/004—Filling molds with powder
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/1208—Containers or coating used therefor
- B22F3/1258—Container manufacturing
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- 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
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/02—Nitrogen
-
- 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
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/20—Use of vacuum
-
- 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
- B22F2202/00—Treatment under specific physical conditions
- B22F2202/01—Use of vibrations
-
- 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
- B22F2998/10—Processes characterised by the sequence of their steps
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Definitions
- powder metallurgy Steels have properties that are identical chemical composition the properties of melt metallurgical manufactured steels are superior. In particular This is what distinguishes steels manufactured using powder metallurgy from that they are in all dimensions across their entire Cross-section have the same structural condition. So are also the mechanical properties across the entire cross-section essentially the same.
- the hot work steel X40CrMoV51 to be produced by powder metallurgy by hot isostatic pressing.
- the archive for the iron and steel industry 55 (1984), pages 169-176 that the hot-work steel mentioned Carbon 0.37-0.41%, silicon 1.0 - 1.07%, manganese from 0.38 - 0.42%, chromium from 5.3 - 5.5%, molybdenum of 1.37-1.41%, vanadium of 1.0-1.27 and negligible Nitrogen, oxygen, sulfur and phosphorus levels having.
- a powder of the above composition prepared by nitrogen atomization from the melt is compacted in steel capsules which are evacuated to a vacuum of less than 10 -4 mbar before sealing. The compression takes place at temperatures of 1075 - 1225 ° C.
- the aforementioned hot-work steel produced by powder metallurgy has a satisfactory hardness, is but because of its insufficient warm hardness, temper resistance and its tendency to experience temperature change cracks not suitable for heavy duty hot work tools like for mandrels, dies and block receivers for the metal pipe and extrusion, not for hot extrusion tools, Tools for hollow body production, tools for screw, nut, rivet and bolt products, Die casting tools, molding dies, die inserts and Hot shear blades. In short, the stability of the Steel in question for highly stressed hot work tools not satisfy.
- the invention is therefore based on the object of a powder metallurgy to create manufactured hot-work steel, which, in addition to having a sufficient toughness, has a high warm hardness and especially good resistance to occurrence of temperature change cracks.
- a powder metallurgy to produce manufactured hot-work steel which has a particularly suitable for use in extrusion, in particular there for mandrels, dies and block receptacles and also for use in forging presses and die casting molds, particularly suitable in the case of large dimensions is.
- the invention is also based on the object of a method for the production of an improved powder metallurgy Specify hot work steel.
- the invention further relates to the use of powder metallurgy manufactured hot work steel as a material for Manufacture of press mandrels, press dies and block sensors for extrusion and for the production of forging presses and die casting molds.
- Induction heat is used to produce the steels according to the invention and used accurate temperature control until the Slag content is correct. Then under a protective gas atmosphere (preferably high purity nitrogen).
- a protective gas atmosphere preferably high purity nitrogen.
- the APM Calidus system has proven particularly suitable for this emphasized because with its help inclusions in the manufactured Powder can be avoided.
- the melt is fed directly into the capsule to be compressed, which increases the risk of undesirable Inclusions enlarged.
- the capsules After filling, the capsules are shaken to get the largest possible To achieve bulk density. Then they are like this filled capsules pumped air-free and then sealed gas-tight.
- pretreated capsule at a pressure of about 3.5 Kbar cold isostatic pressed to this way the thermal conductivity to improve the powder batch contained in the capsule.
- the capsules are under simultaneous pressurization heated.
- the first step is to apply pressure about 200 bar with the help of compressed argon.
- the heating takes place in the HIP system, the pressure of the the compressors supplying the compressed argon essentially is kept constant. With increasing temperature the grows Pressure on continuously without the pressure of the argon compressors should be increased.
- the powder batch is compacted under pressure at a relatively low temperature, even before Oxygen, sulfur and carbon transport occurs. Consequently, the hot-work steel according to the invention is free of Segregations.
- the HIP temperature is 1000 to 1230 ° C, one temperature of 1150 ° C is preferred.
- the HIP pressure is 0.8 to 3.5 kbar, with a HIP pressure of 1 kbar currently being extremely has proven advantageous. When pressing less than 0.8 Kbar does not result in a sufficient compression of the material and especially the risk of gas inclusions in residual pores remain. HIP pressures of more than 3.5 kbar are possible with modern HIP systems, but does not lead to one quality increase justifying the effort.
- the holding time is at the target HIP temperature and at the target HIP pressure at least 3 h. This time period applies to small dimensions to be manufactured. Larger dimensions to be manufactured need longer compaction times. conventional Procedures usually work with holding times of only a single hour. Since in the method according to the invention filled capsules simultaneously high temperatures and high Exposed to pressure will result in a homogeneous material high density achieved.
- Hot work steel requires final forging or rolling treatments. Such processing measures in the heat carried out lead to an undesirable carbide growth and also to undesirably round off the carbides.
- this is according to the invention composite and the hot work steel produced according to the invention used in the hipped state, i.e. in that condition, in which it was released from the capsule after pressing is.
- the invention Round material with a diameter of less than 60 mm and rolled flat material with a cross-sectional ratio or forged.
- the hot-work steel produced by powder metallurgy according to the invention has the following composition (in% by weight): carbon 0.25-0.45 chrome 2.40 - 4.25 molybdenum 2.50 - 4.40 vanadium 0.20-0.95 cobalt 2.10 - 3.90 silicon 0.10 - 0.80 manganese 0.15-0.65 Balance iron and possibly production-related impurities. It has a degree of purity K1 ⁇ 10.
- the hot forming temperature is for the steel according to the invention
- the soft annealing temperature is 900 to 1100 ° C 750 to 800 ° C
- the stress relieving temperature is 600 up to 650 ° C
- As a hardening agent oil in a warm bath (500 to 550 ° C) is preferably used.
- the hardness HB is a maximum of 229.
- the Rockwell hardness is 52 to 56 HRC.
- the PM hot-work steel according to the invention has the in the following surprisingly good values with increased Temperatures (guidelines).
- the resistance of the material according to the invention against that Cracks appear as a result of repeated temperature changes was determined in the usual way in the laboratory. there the material is cyclically heated to a test temperature and cooled again in an emulsion. Subsequently the cracks that have occurred are on a predetermined measuring length counted. The fire crack number determined in this way permits Statements about the behavior of the investigated material in the Comparison with the behavior of a comparison material.
- the comparison materials are with their material numbers Inscribed "steel key”. It is these Comparative materials for melt-metallurgically manufactured Steels. Result for the hot work steel according to the invention the cheapest for all test conditions a) to c), i.e. the lowest fire crack numbers.
- the comparison steel containing cobalt with the material number 1.2365 + Co indicates all three Test conditions a) to c) significantly higher fire crack numbers. For test condition a) they are due to the reference material 1.2365 + Co values even increased by almost 100%.
- the excellent heat toughness values of the invention Material are graphically in Fig. 2 to the specified Comparative materials compared values determined. in the investigated temperature range from about 600 to about 800 ° C. the material of the invention has excellent Einschnürungshunt.
- the reference material also containing cobalt with the material number 1.2365 + Co are clearly inferior in terms of toughness.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Forging (AREA)
- Heat Treatment Of Steel (AREA)
Description
Kohlenstoff | 0,25 - 0,45 |
Chrom | 2,40 - 4,25 |
Molybdän | 2,50 - 4,40 |
Vanadium | 0,20 - 0,95 |
Kobalt | 2,10 - 3,90 |
Silicium | 0,10 - 0,80 |
Mangan | 0,15 - 0,65 |
Vergütefestigkeit 1600 N/mm2 | |||||||
Zugfestigkeit N/mm2 | 0,2-Grenze N/mm2 | ||||||
400 °C | 500 °C | 600 °C | 650 °C | 400 °C | 500 °C | 600 °C | 650 °C |
1380 | 1210 | 950 | 760 | 1150 | 1000 | 750 | 630 |
Arbeitshärte 46 HRc; 30 min auf Prüftemperatur gehalten | ||
500 °C | 600 °C | 700 °C |
390 HV | 330 HV | 170 HV |
Anlaßtemperatur in °C | 100 | 200 | 300 | 400 | 500 | 550 | 600 | 650 | 700 |
Rockwellhärte HRc | 54 | 53 | 50 | 52 | 52 | 53 | 52 | 47 | 46 |
Claims (5)
- Pulvermetallurgisch hergestellter Warmarbeitsstahl, bestehend aus (in Gew.-%):
Kohlenstoff 0,25 - 0,45 Chrom 2,40 - 4,25 Molybdän 2,50 - 4,40 Vanadium 0.20 - 0,95 Kobalt 2,10 - 3,90 Silicium 0,10 - 0,80 Mangan 0,15 - 0,65
und mit einem Reinheitsgrad K1 < 10. - PM-Warmarbeitsstahl nach Anspruch 1 , herstellbar durch die folgenden Schritte:Herstellen einer Stahlschmelze mit der angestrebten chemischen Zusammensetzung,Verdüsen der Schmelze unter einer hochreinen Stickstoffatmosphäre,Einfüllen des gewonnenen Pulvers in Kapseln, welche so gestaltet sind, daß das Endprodukt seine beabsichtigte Form bei größtmöglicher Materialausbeute erhält,Rütteln der gefüllten Kapseln zwecks Erreichens einer höchstmöglichen Fülldichte,Evakuieren der gefüllten Kapseln und gasdichtes Verschließen derselben,Einbringen der Kapseln in eine Heißisostatpresse und gleichzeitiges Beaufschlagen der Kapseln mit Druck und Temperatur bis zum Erreichen eines Druckes von 0,8 bis 3,5 kbar und einer Temperatur von 1 000 bis 1230 °C undHalten von Druck und Temperatur für einen Zeitraum von wenigstens 3 h.
- PM-Warmarbeitsstahl nach 2, dadurch gekennzeichnet, daß die Pulvercharge in der Heißisostatpresse mit einem Druck von 1 kbar beaufschlagt worden ist.
- Verfahren zur pulvermetallurgischen Herstellung eines Warmarbeitsstahles, umfassend die folgenden Schritte:Herstellen einer Stahlschmelze mit
0,25 bis 0,45 % Kohlenstoff, 2,40 bis 4,25 % Chrom, 2,50 bis 4,40 % Molybdän, 0,20 bis 0,95 % Vanadium, 2,10 bis 3,90 % Kobalt, 0,10 bis 0,80 % Silicium, 0,15 bis 0,65 % Mangan, Rest Eisen und unvermeidliche Begleitelemente, Verdüsen der Schmelze unter einer hochreinen Stickstoffatmosphäre,Einfüllen des gewonnenen Pulvers in Kapseln, welche so gestaltet sind, daß das Endprodukt seine beabsichtigte Form bei größtmöglicher Materialausbeute erhält,Rütteln der gefüllten Kapseln zwecks Erreichens einer höchstmöglichen Fülldichte,Evakuieren der gefüllten Kapseln und gasdichtes Verschließen derselben,Einbringen der Kapseln in eine Heißisostatpresse und Aufheizen der Kapseln unter gleichzeitiger Druckbeaufschlagung auf eine Temperatur von 1000 bis 1230 °C und einen Druck von 0,8 bis 3,5 kbar, vorteilhafterweise 1 kbar, undHalten der Charge auf der gewählten Temperatur und dem gewählten Druck für einen Zeitraum von wenigstens 3 h. - Verwendung eines Stahles nach wenigstens einem der Ansprüche 1 bis 3 bzw. hergestellt gemäß Anspruch 4 zur Herstellung von Preßdornen, Preßmatrizen und Blockaufnehmern für das Strangpressen, wie auch zur Herstellung von Schmiedepressen und Druckgußformen.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK96109706T DK0814172T3 (da) | 1996-06-17 | 1996-06-17 | Pulvermetallurgisk varmarbejdsstål og fremgangsmåde til fremstilling deraf |
PT96109706T PT814172E (pt) | 1996-06-17 | 1996-06-17 | Aco para ferramentas de trabalho a quente por pulverizacao metalurgica e processo para a sua producao |
AT96109706T ATE223975T1 (de) | 1996-06-17 | 1996-06-17 | Pm-warmarbeitsstahl und verfahren zu dessen herstellung |
DE59609657T DE59609657D1 (de) | 1996-06-17 | 1996-06-17 | PM-Warmarbeitsstahl und Verfahren zu dessen Herstellung |
ES96109706T ES2181827T3 (es) | 1996-06-17 | 1996-06-17 | Acero polvometalurgico resistente al calor y procedimiento para su fabricacion. |
EP96109706A EP0814172B1 (de) | 1996-06-17 | 1996-06-17 | PM-Warmarbeitsstahl und Verfahren zu dessen Herstellung |
KR1019980701080A KR100270453B1 (ko) | 1996-06-17 | 1997-06-16 | 분말야금으로제조된열간가공강및그제조방법 |
US09/011,792 US6015446A (en) | 1996-06-17 | 1997-06-16 | PM hot-work steel and method of producing the same |
JP50223698A JP3456707B2 (ja) | 1996-06-17 | 1997-06-16 | 粉末冶金熱間加工鋼及びその製造方法 |
PCT/EP1997/003119 WO1997048829A1 (de) | 1996-06-17 | 1997-06-16 | Pm-warmarbeitsstahl und verfahren zu dessen herstellung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96109706A EP0814172B1 (de) | 1996-06-17 | 1996-06-17 | PM-Warmarbeitsstahl und Verfahren zu dessen Herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0814172A1 EP0814172A1 (de) | 1997-12-29 |
EP0814172B1 true EP0814172B1 (de) | 2002-09-11 |
Family
ID=8222899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96109706A Revoked EP0814172B1 (de) | 1996-06-17 | 1996-06-17 | PM-Warmarbeitsstahl und Verfahren zu dessen Herstellung |
Country Status (10)
Country | Link |
---|---|
US (1) | US6015446A (de) |
EP (1) | EP0814172B1 (de) |
JP (1) | JP3456707B2 (de) |
KR (1) | KR100270453B1 (de) |
AT (1) | ATE223975T1 (de) |
DE (1) | DE59609657D1 (de) |
DK (1) | DK0814172T3 (de) |
ES (1) | ES2181827T3 (de) |
PT (1) | PT814172E (de) |
WO (1) | WO1997048829A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6364927B1 (en) * | 1999-09-03 | 2002-04-02 | Hoeganaes Corporation | Metal-based powder compositions containing silicon carbide as an alloying powder |
AT411580B (de) * | 2001-04-11 | 2004-03-25 | Boehler Edelstahl | Verfahren zur pulvermetallurgischen herstellung von gegenständen |
AT410447B (de) * | 2001-10-03 | 2003-04-25 | Boehler Edelstahl | Warmarbeitsstahlgegenstand |
DE102005022730A1 (de) * | 2005-05-18 | 2006-11-23 | Schaeffler Kg | Wälzlagerring,insbesondere für hochbeanspruchte Wälzlager in Flugzeugtriebwerken, sowie Verfahren zu dessen Herstellung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1590953A (en) * | 1977-10-04 | 1981-06-10 | Powdrex Ltd | Making articles from metallic powder |
EP0327064A3 (de) * | 1988-02-05 | 1989-12-20 | Anval Nyby Powder Ab | Verfahren zur Herstellung pulvermetallurgischer Gegenstände, insbesondere langgestreckter Gegenstände, wie Stangen, Profile, Rohre od. dgl. |
IT1241490B (it) * | 1990-07-17 | 1994-01-17 | Sviluppo Materiali Spa | Acciaio rapido da polveri. |
WO1993002818A1 (en) * | 1991-08-07 | 1993-02-18 | Kloster Speedsteel Aktiebolag | High-speed steel manufactured by powder metallurgy |
US5522914A (en) * | 1993-09-27 | 1996-06-04 | Crucible Materials Corporation | Sulfur-containing powder-metallurgy tool steel article |
US5447800A (en) * | 1993-09-27 | 1995-09-05 | Crucible Materials Corporation | Martensitic hot work tool steel die block article and method of manufacture |
US5435824A (en) * | 1993-09-27 | 1995-07-25 | Crucible Materials Corporation | Hot-isostatically-compacted martensitic mold and die block article and method of manufacture |
-
1996
- 1996-06-17 DK DK96109706T patent/DK0814172T3/da active
- 1996-06-17 AT AT96109706T patent/ATE223975T1/de not_active IP Right Cessation
- 1996-06-17 DE DE59609657T patent/DE59609657D1/de not_active Expired - Fee Related
- 1996-06-17 ES ES96109706T patent/ES2181827T3/es not_active Expired - Lifetime
- 1996-06-17 PT PT96109706T patent/PT814172E/pt unknown
- 1996-06-17 EP EP96109706A patent/EP0814172B1/de not_active Revoked
-
1997
- 1997-06-16 WO PCT/EP1997/003119 patent/WO1997048829A1/de active IP Right Grant
- 1997-06-16 US US09/011,792 patent/US6015446A/en not_active Expired - Fee Related
- 1997-06-16 JP JP50223698A patent/JP3456707B2/ja not_active Expired - Fee Related
- 1997-06-16 KR KR1019980701080A patent/KR100270453B1/ko not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
ASM Specialty Handbook, Tool Materials, 1995, J.R. Davis, 144-146 * |
Also Published As
Publication number | Publication date |
---|---|
EP0814172A1 (de) | 1997-12-29 |
US6015446A (en) | 2000-01-18 |
JP3456707B2 (ja) | 2003-10-14 |
KR100270453B1 (ko) | 2000-12-01 |
JPH10510884A (ja) | 1998-10-20 |
DK0814172T3 (da) | 2002-11-18 |
WO1997048829A1 (de) | 1997-12-24 |
PT814172E (pt) | 2003-01-31 |
ATE223975T1 (de) | 2002-09-15 |
KR19990036411A (ko) | 1999-05-25 |
ES2181827T3 (es) | 2003-03-01 |
DE59609657D1 (de) | 2002-10-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69419176T2 (de) | Co-cr-mo pulvermetallurgischen gegenstände und verfahren deren herstellung | |
EP0114592A1 (de) | Verfahren zur Metallverarbeitung unter Verwendung von Matrizen | |
DE69814896T2 (de) | Stahl und wärmebehandeltes werkzeug, hergestellt in einem integrierten pulvermetallurgischem prozess und die nutzung eines solchen stahles für werkzeuge | |
DE2542094A1 (de) | Metallpulver, verfahren zur behandlung losen metallpulvers und verfahren zur herstellung eines verdichteten presslings | |
EP3372700B1 (de) | Verfahren zur herstellung geschmiedeter tial-bauteile | |
DE2900334C2 (de) | Verschleiß- und korrosionsbeständiger Stahl mit überlegener Walzkontakt-Ermüdungsbeständigkeit und einem niederen Gehalt an zurückgehaltenem Austenit | |
DE69906782T2 (de) | Stahl, verwendung des stahls, daraus hergestelltes produkt und verfahren zu dessen herstellung | |
WO2021032893A1 (de) | Werkzeugstahl für kaltarbeits- und schnellarbeitsanwendungen | |
WO2001079575A1 (de) | Stickstofflegierter, sprühkompaktierter stahl, verfahren zu seiner herstellung und verbundwerkstoff hergestellt aus dem stahl | |
EP0322397B1 (de) | Pulvermetallurgisch hergestellter Schnellarbeitsstahl, daraus hergestellter Versschleissteil und Verfahren zu seiner Herstellung | |
EP1647606B1 (de) | Hochharte Nickelbasislegierung für verschleissfeste Hochtemperaturwerkzeuge | |
WO2003008655A2 (de) | FORMTEIL AUS EINEM INTERMETALLISCHEN GAMMA-TiAl WERKSTOFF | |
EP3335820B1 (de) | Verbundkörper und verfahren zu seiner herstellung | |
EP0814172B1 (de) | PM-Warmarbeitsstahl und Verfahren zu dessen Herstellung | |
DE69417003T2 (de) | Titanfreier, nickelenthaltender, martensitanohärtbarer Stahl für Stempelblöcke und ein Verfahren zu dessen Herstellung | |
DE2814553A1 (de) | Verdichtete erzeugnisse aus nickel- superlegierungen | |
EP1249510B2 (de) | Verfahren zur pulvermetallurgischen Herstellung von Gegenständen aus Werkzeugstahl | |
DE2522073A1 (de) | Blech aus einer legierung | |
DE10014656B4 (de) | Kalt/Warmbearbeitungs- und Wärmebehandlungsverfahren für hochlegierten Stahl der Gruppe mit hohem Kohlenstoffgehalt | |
DE2711810A1 (de) | Walzenaufbau | |
EP4244473A1 (de) | Hochtemperatur-umformwerkzeug | |
DE69419474T2 (de) | Artikel aus Schwefel enthaltenden Werkzeugstahlpulver und Verfahren zu seiner Herstellung | |
EP1129803B1 (de) | Pulvermetallurgisch hergestelltes Material mit verbesserter Isotropie der mechanischen Eigenschaften | |
DE2438315C3 (de) | Verfahren zum pulvermetallurgischen Herstellen von Genauteilen | |
DE2518248C2 (de) | Verfahren zur Herstellung eines Sinterkörpers |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19970227 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
17Q | First examination report despatched |
Effective date: 19990827 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
REF | Corresponds to: |
Ref document number: 223975 Country of ref document: AT Date of ref document: 20020915 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: PATENTANWALTSBUERO JEAN HUNZIKER Ref country code: CH Ref legal event code: EP |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20020911 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 59609657 Country of ref document: DE Date of ref document: 20021017 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 20021210 |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: EP Ref document number: 20020404235 Country of ref document: GR |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2181827 Country of ref document: ES Kind code of ref document: T3 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: MC Payment date: 20030525 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GR Payment date: 20030526 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20030602 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PT Payment date: 20030603 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20030612 Year of fee payment: 8 |
|
PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20030618 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20030620 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20030623 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20030624 Year of fee payment: 8 Ref country code: DK Payment date: 20030624 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20030626 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20030627 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20030701 Year of fee payment: 8 |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
26 | Opposition filed |
Opponent name: BOEHLER EDELSTAHL GMBH Effective date: 20030610 |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: BOEHLER EDELSTAHL GMBH |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
PLBB | Reply of patent proprietor to notice(s) of opposition received |
Free format text: ORIGINAL CODE: EPIDOSNOBS3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040617 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040617 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040617 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040618 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20040623 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040630 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040630 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040630 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040630 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040630 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20040730 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041217 |
|
BERE | Be: lapsed |
Owner name: *HAU HANSPETER Effective date: 20040630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050105 |
|
RDAF | Communication despatched that patent is revoked |
Free format text: ORIGINAL CODE: EPIDOSNREV1 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
EUG | Se: european patent has lapsed | ||
EUG | Se: european patent has lapsed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20040617 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: MM4A Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20041217 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20050101 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
27W | Patent revoked |
Effective date: 20050113 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: MP4A Effective date: 20050629 |