EP0699772B1 - Verwendung von Oberflächennitriertem Molybdän für Strangpressmatrizen - Google Patents
Verwendung von Oberflächennitriertem Molybdän für Strangpressmatrizen Download PDFInfo
- Publication number
- EP0699772B1 EP0699772B1 EP95202051A EP95202051A EP0699772B1 EP 0699772 B1 EP0699772 B1 EP 0699772B1 EP 95202051 A EP95202051 A EP 95202051A EP 95202051 A EP95202051 A EP 95202051A EP 0699772 B1 EP0699772 B1 EP 0699772B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- molybdenum
- nitriding
- hardened
- alloys
- dies
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
Definitions
- the invention relates to the use of special materials according to the main claim for dies and similar components that come into contact with the extruded material for the extrusion of Light and non-ferrous metals.
- DE-AS 17 58 508 describes the use of a Composite material consisting of 20 - 85 vol.% Molybdenum and / or tungsten as a metallic component, the rest Zirconium oxide as an oxide ceramic component as a material for the production of dies for the extrusion of colored and Light metals.
- the extruded material produced with such matrices is characterized by very good surface quality.
- a disadvantage is the not always sufficient warm and Creep resistance and thus the early failure of the Matrices.
- Molybdenum alloys with the composition Mo, 1.2% Hf, 0.1% C or Mo, 0.5% Ti, 0.08% Zr, 0.02 - 0.04% C are used as matrix materials for the extrusion of copper alloys, the applicability had to be limited to copper alloys with a copper content ⁇ 70% by weight.
- the extrusion of differently alloyed light and non-ferrous metals failed due to the low erosion resistance of this material. In particular, undesired reactions of the extruded material with the matrix material occurred.
- JP-A-1 111 833 discloses the use of an alloy with a Mo content of 5-40% by weight for matrices.
- the object of the present invention is to use a Matrix material for the extrusion of colored and Light metals with improved properties.
- the material should meet the requirements mentioned above better overall correspond to the materials previously used, above all also with regard to the previously proven materials Molybdenum base.
- Copper and copper alloys can be compared to the Nickel-base superalloys commonly used hitherto and stellites as materials for the matrices the service life be significantly improved, with a comparative better surface quality of the extrusion material and this even at a significantly higher pressing speed.
- molybdenum alloys known under the name MHC 0.5 to 2% by weight hafnium, 0.04 to 0.2% by weight carbon, balance Molybdenum, or the one known under the name TZM Molybdenum alloy with 0.4 to 0.55% by weight titanium, 0.06 to 0.12 % By weight zirconium, 0.01-0.04% by weight carbon, balance molybdenum proven.
- the surface nitriding of the matrices has become Gas nitriding, plasma nitriding or nitrogen ion nitriding proven.
- Hot-work steel was able to increase the average tool life by one Factor 1.6 with an average 1.5 times higher Extrusion speed can be increased. Furthermore showed the extruded material that with the invention Die inserts were made with a smoother surface than that made with hot-work steel dies has been.
- Matrix inserts made of an MHC alloy were as in Example 1 prepared and then at 900 ° C for 6 hours Ammonia nitrided.
- the mean nitride layer thickness was 5 ⁇ m, the micro hardness 1810 HV 0.001.
- profiles made of low-oxygen copper were extruded. in the Compared to matrices commonly used so far Nickel-based superalloys were able to reduce the average service life a factor of 1.9 for a 1.2 times higher Press speed can be increased. This also showed here Extruded material has a smoother surface than that of the dies made of nickel-based superalloy.
- MHC alloy matrices were made as in Example 1 manufactured and nitrided. With the so produced Die inserts were made of Ms63 alloy extruded. Compared to usual so far Stellite matrices used could be the middle one Tool life by a factor of 2.8 and approximately 1.2 times higher pressing speed can be increased. Also in this Case, the extrusion showed a smoother surface than for the matrices made of stellite.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Extrusion Of Metal (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Catalysts (AREA)
- Powder Metallurgy (AREA)
Description
- hohe Maßhaltigkeit, d.h. hohe Fließgrenze und Kriechfestigkeit bei Matrizeneinsatztemperatur
- geringe Anfälligkeit gegen thermomechanische Ermüdung bzw. Ausbildung von Rissen (vorteilhafte Vorbedingung hierfür ist eine hohe Werkstoffwärmeleitfähigkeit)
- hohe Oberflächengüte bzw. geringe Oberflächenrauhigkeit des Strangpreßgutes
- Verwendbarkeit für hohe Preßgeschwindigkeiten
- ausreichende Kaltduktilität
- hohe Erosions-/Korrosions-Beständigkeit.
Doch die bekannten Nachteile des Keramikwerkstoffes, besonders die geringe Duktilität, insbesondere Kaltduktilität, engen auch das Anwendungsfeld für Keramikmatrizen stark ein.
Das Strangpressen anders legierter Leicht- und Buntmetalle scheiterte an der geringen Erosionsbeständigkeit dieses Werkstoffes. Es kam insbesondere zu unerwünschten Reaktionen des extrudierten Materials mit dem Matrizenwerkstoff.
Gemäß Patentbeschreibung erhalten derartige Werkstoffe durch das Oberflächennitrieren "bestimmte mechanische Eigenschaften, insbesondere Verschleißfestigkeit", die bei Schneidversuchen von Schneidwerkzeugen aus derartigen Werkstoffen zum Tragen kommen.
Claims (7)
- Verwendung von Molybdänlegierungen mit einem Molybdänanteil > 97,8 Gew.%, die mittels Nitrieren oberflächlich gehärtet wurden, für Matrizen und ähnliche Bauteile, die dem mit Strangpressgut in Berührung kommen, zum Strangpressen von Leicht- und Buntmetallen.
- Verwendung von Molybdänlegierungen, die mittels Nitrieren oberflächelich gehärtet wurden nach Anspruch 1, dadurch gekennzeichnet, daß die Molybdänlegierung aus 0,5 bis 2 Gew.% Hafnium, 0,04 bis 0,2 Gew.% Kohlenstoff, Rest Molybdän besteht.
- Verwendung von Molybdänlegierungen, die mittels Nitrieren oberflächlich gehärtet wurden nach Anspruch 1, dadurch gekennzeichnet, daß die Molybdänlegierung aus 0,4 bis 0,55 Gew.% Titan, 0,06 bis 0,12 Gew.% Zirkon, 0,01 bis 0,04 Gew.% Kohlenstoff, Rest Molybdän besteht.
- Verwendung von Molybdänlegierungen, die mittels Nitrieren oberflächlich gehärtet wurden nach Anspruch 3, dadurch gekennzeichnet, daß die Molybdänlegierung aus 0,5 Gew.% Titan, 0,08 Gew.% Zirkon, 0,04 Gew.% Kohlenstoff, Rest Molybdän besteht.
- Verwendung von Molybdänlegierungen, die mittels Nitrieren oberflächlich gehärtet wurden nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Matrizen mittels Gasnitrieren oberflächenbehandelt wurden.
- Verwendung von Molybdänlegierungen, die mittels Nitrieren oberflächlich gehärtet wurden nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Matrizen mittels Plasmanitrierung oberflächenbehandelt wurden.
- Verwendung von Molybdänlegierungen, die mittels Nitrieren oberflächlich gehärtet wurden nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Matrizen mittels Stickstoff-Ionennitrierung oberflächenbehandelt wurden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0151194A AT401778B (de) | 1994-08-01 | 1994-08-01 | Verwendung von molybdän-legierungen |
AT1511/94 | 1994-08-01 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0699772A2 EP0699772A2 (de) | 1996-03-06 |
EP0699772A3 EP0699772A3 (de) | 1996-10-16 |
EP0699772B1 true EP0699772B1 (de) | 1998-12-02 |
Family
ID=3515287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95202051A Expired - Lifetime EP0699772B1 (de) | 1994-08-01 | 1995-07-26 | Verwendung von Oberflächennitriertem Molybdän für Strangpressmatrizen |
Country Status (5)
Country | Link |
---|---|
US (1) | US5645944A (de) |
EP (1) | EP0699772B1 (de) |
AT (2) | AT401778B (de) |
DE (1) | DE59504397D1 (de) |
ES (1) | ES2125552T3 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6371261B1 (en) * | 1997-11-06 | 2002-04-16 | Otis Elevator Company | Molybdenum alloy elevator safety brakes |
JP4307649B2 (ja) * | 1999-09-06 | 2009-08-05 | 独立行政法人科学技術振興機構 | 高靭性・高強度の高融点金属系合金材料及びその製造方法 |
AT14986U1 (de) * | 2015-10-05 | 2016-10-15 | Plansee Se | Komponente einer Metallverarbeitungsmaschine |
CN107034404B (zh) * | 2017-04-18 | 2019-01-22 | 中南大学 | 一种MoHfTiBC系钼合金 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3701655A (en) * | 1970-12-18 | 1972-10-31 | Surface Technology Corp | Columbium base alloy |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT291611B (de) * | 1967-09-05 | 1971-07-26 | Surface Technology Corp An Ill | Nitridiertes Material |
DE1758508C3 (de) * | 1968-06-15 | 1974-01-24 | Wieland-Werke Ag, 7900 Ulm | Verwendung eines Verbundwerkstoffes zur Herstellung von Matrizeneinsätzen für Matrizen zum Strangpreßen von Nichteisenmetallen und -legierungen |
US3801381A (en) * | 1968-08-27 | 1974-04-02 | Surface Technology Corp | Composite nitrided articles |
AT294529B (de) * | 1970-02-02 | 1971-11-25 | Plansee Metallwerk | Strangpreßmatrize |
US3830670A (en) * | 1970-12-18 | 1974-08-20 | Surface Technology Corp | Graded multiphase carburized materials |
JPS5213500B2 (de) * | 1973-03-23 | 1977-04-14 | ||
US4026730A (en) * | 1973-01-18 | 1977-05-31 | Surface Technology Corporation | Nitrided materials |
US3994692A (en) * | 1974-05-29 | 1976-11-30 | Erwin Rudy | Sintered carbonitride tool materials |
CH630112A5 (de) * | 1977-10-26 | 1982-05-28 | Bbc Brown Boveri & Cie | Verfahren zum aufbringen eines schmiermittelfilms. |
US4657735A (en) * | 1985-10-02 | 1987-04-14 | Amax Inc. | Mo-Hf-C alloy composition |
US4717538A (en) * | 1986-11-28 | 1988-01-05 | Gte Products Corporation | Molybdenum-tungsten-titanium-zirconium-carbon alloy system |
US4799977A (en) * | 1987-09-21 | 1989-01-24 | Fansteel Inc. | Graded multiphase oxycarburized and oxycarbonitrided material systems |
JPH01111833A (ja) * | 1987-10-26 | 1989-04-28 | Toshiba Corp | 耐摩耗合金 |
SU1560617A1 (ru) * | 1988-03-01 | 1990-04-30 | Предприятие П/Я А-1278 | Способ азотировани молибденовых вкладышей пресс-форм |
-
1994
- 1994-08-01 AT AT0151194A patent/AT401778B/de not_active IP Right Cessation
-
1995
- 1995-07-18 US US08/503,598 patent/US5645944A/en not_active Expired - Fee Related
- 1995-07-26 ES ES95202051T patent/ES2125552T3/es not_active Expired - Lifetime
- 1995-07-26 EP EP95202051A patent/EP0699772B1/de not_active Expired - Lifetime
- 1995-07-26 DE DE59504397T patent/DE59504397D1/de not_active Expired - Fee Related
- 1995-07-26 AT AT95202051T patent/ATE174071T1/de not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3701655A (en) * | 1970-12-18 | 1972-10-31 | Surface Technology Corp | Columbium base alloy |
Also Published As
Publication number | Publication date |
---|---|
DE59504397D1 (de) | 1999-01-14 |
AT401778B (de) | 1996-11-25 |
EP0699772A3 (de) | 1996-10-16 |
US5645944A (en) | 1997-07-08 |
ATE174071T1 (de) | 1998-12-15 |
ES2125552T3 (es) | 1999-03-01 |
ATA151194A (de) | 1996-04-15 |
EP0699772A2 (de) | 1996-03-06 |
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