EP0699772A2 - Utilisation de molybdène avec une surface nitrée pour matrices d'extrusion - Google Patents

Utilisation de molybdène avec une surface nitrée pour matrices d'extrusion Download PDF

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Publication number
EP0699772A2
EP0699772A2 EP95202051A EP95202051A EP0699772A2 EP 0699772 A2 EP0699772 A2 EP 0699772A2 EP 95202051 A EP95202051 A EP 95202051A EP 95202051 A EP95202051 A EP 95202051A EP 0699772 A2 EP0699772 A2 EP 0699772A2
Authority
EP
European Patent Office
Prior art keywords
molybdenum
nitriding
weight
alloys
materials
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
Application number
EP95202051A
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German (de)
English (en)
Other versions
EP0699772B1 (fr
EP0699772A3 (fr
Inventor
Gerhard Dipl.-Ing. Leichtfried
Hans-Peter Dr. Martinz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plansee SE
Original Assignee
Plansee SE
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Publication date
Application filed by Plansee SE filed Critical Plansee SE
Publication of EP0699772A2 publication Critical patent/EP0699772A2/fr
Publication of EP0699772A3 publication Critical patent/EP0699772A3/fr
Application granted granted Critical
Publication of EP0699772B1 publication Critical patent/EP0699772B1/fr
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Expired - Lifetime legal-status Critical Current

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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 for dies and comparable components 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% by volume of molybdenum and / or tungsten as the metallic component, the rest being zirconium oxide as the oxide ceramic component as the material for the production of dies for the extrusion of non-ferrous and light metals.
  • the extruded material produced with such matrices is characterized by very good surface quality.
  • the disadvantage is that the heat and creep resistance is not always sufficient and thus the premature failure of the dies.
  • 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.
  • the object of the present invention is to provide a matrix material for the extrusion of non-ferrous and light metals with improved properties. All in all, the material should better meet the requirements mentioned at the outset than the previously used materials, especially with regard to the previously proven molybdenum-based materials.
  • the pressing speed can be increased by a significant amount compared to known, previously used dies made of hot-work steel, with at least the same surface quality of the pressed material and at least the same, often even improved, die life.
  • the service life can be significantly improved in comparison with the nickel-base superalloys and stellites used as materials for the matrices, with a comparatively better surface quality of the extrusion material and even at a significantly higher pressing speed.
  • molybdenum alloys are the molybdenum alloys known under the name MHC with 0.5 to 2% by weight hafnium, 0.04 to 0.2% by weight carbon, the rest molybdenum, or the molybdenum alloy known under the name TZM with 0, 4 to 0.55% by weight of titanium, 0.06 to 0.12% by weight of zirconium, 0.01 to 0.04% by weight of carbon, the rest molybdenum proven.
  • Gas nitriding, plasma nitriding or nitrogen ion nitriding have proven to be particularly advantageous methods for the surface nitriding of the matrices.
  • the mean tool life could be increased by a factor of 1.6 at an extrusion speed that was 1.5 times higher on average.
  • the extruded material which was produced using the die inserts according to the invention had a smoother surface than that which was produced using dies made of hot-work steel.
  • Matrix inserts made of an MHC alloy were produced as in Example 1 and then nitrided in ammonia at 900 ° C. for 6 hours.
  • the average nitride layer thickness was 5 ⁇ m, the micro hardness 1810 HV 0.001.
  • Profiles made of low-oxygen copper were extruded with the die inserts.
  • the mean service life was around can be increased by a factor of 1.9 at a press speed 1.2 times higher.
  • the extruded material had a smoother surface than that of the matrices made of the nickel-based superalloy.
  • MHC alloy matrices were produced and nitrided as in Example 1. Profiles made of the alloy Ms63 were extruded with the die inserts produced in this way. Compared to the previously used stellite matrices, the mean tool life could be increased by a factor of 2.8 at a pressing speed that was about 1.2 times higher. In this case too, the extruded material had a smoother surface than that of the stellite matrices.

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)
EP95202051A 1994-08-01 1995-07-26 Utilisation de molybdène avec une surface nitrée pour matrices d'extrusion Expired - Lifetime EP0699772B1 (fr)

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 true EP0699772A2 (fr) 1996-03-06
EP0699772A3 EP0699772A3 (fr) 1996-10-16
EP0699772B1 EP0699772B1 (fr) 1998-12-02

Family

ID=3515287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95202051A Expired - Lifetime EP0699772B1 (fr) 1994-08-01 1995-07-26 Utilisation de molybdène avec une surface nitrée pour matrices d'extrusion

Country Status (5)

Country Link
US (1) US5645944A (fr)
EP (1) EP0699772B1 (fr)
AT (2) AT401778B (fr)
DE (1) DE59504397D1 (fr)
ES (1) ES2125552T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1758508A1 (de) 1968-06-15 1971-03-04 Wieland Werke Ag Matrize zum Strangpressen metallischer Werkstoffe
DE1758923A1 (de) 1967-09-05 1972-04-13 Surface Technology Corp Gegen Abnutzung bestaendiges Material
DE1758924A1 (de) 1967-09-05 1973-08-16 Surface Technology Corp Abriebbestaendiges material

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3701655A (en) * 1970-12-18 1972-10-31 Surface Technology Corp Columbium base alloy
US3830670A (en) * 1970-12-18 1974-08-20 Surface Technology Corp Graded multiphase carburized materials
JPS5213500B2 (fr) * 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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1758923A1 (de) 1967-09-05 1972-04-13 Surface Technology Corp Gegen Abnutzung bestaendiges Material
DE1758924A1 (de) 1967-09-05 1973-08-16 Surface Technology Corp Abriebbestaendiges material
DE1758508A1 (de) 1968-06-15 1971-03-04 Wieland Werke Ag Matrize zum Strangpressen metallischer Werkstoffe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Proceedings zum 13. Internationalen PLANSEE Seminar", vol. I, 1993, article H.P. MARTINZ, pages: 632FF

Also Published As

Publication number Publication date
ES2125552T3 (es) 1999-03-01
ATA151194A (de) 1996-04-15
DE59504397D1 (de) 1999-01-14
AT401778B (de) 1996-11-25
US5645944A (en) 1997-07-08
EP0699772B1 (fr) 1998-12-02
EP0699772A3 (fr) 1996-10-16
ATE174071T1 (de) 1998-12-15

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