EP0771365A1 - Zinklegierung für druckgiessen im warmer druckkammer - Google Patents

Zinklegierung für druckgiessen im warmer druckkammer

Info

Publication number
EP0771365A1
EP0771365A1 EP95926933A EP95926933A EP0771365A1 EP 0771365 A1 EP0771365 A1 EP 0771365A1 EP 95926933 A EP95926933 A EP 95926933A EP 95926933 A EP95926933 A EP 95926933A EP 0771365 A1 EP0771365 A1 EP 0771365A1
Authority
EP
European Patent Office
Prior art keywords
alloy
zinc
hot chamber
alloy according
casting
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
EP95926933A
Other languages
English (en)
French (fr)
Other versions
EP0771365B1 (de
Inventor
Laurent R.A.G. Coster
Didier Rollez
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.)
Nv Union Miniere Sa
Umicore NV SA
Original Assignee
Nv Union Miniere Sa
Union Miniere NV SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nv Union Miniere Sa, Union Miniere NV SA filed Critical Nv Union Miniere Sa
Publication of EP0771365A1 publication Critical patent/EP0771365A1/de
Application granted granted Critical
Publication of EP0771365B1 publication Critical patent/EP0771365B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C18/00—Alloys based on zinc
    • C22C18/04—Alloys based on zinc with aluminium as the next major constituent

Definitions

  • the present invention relates to a zinc-based alloy containing Al and Cu, which can be cast under pressure in a hot chamber machine.
  • ACuZinc 5" consists of 5.0-6.0% Cu, 2.8-3.3% Al and 0.025- 0.05% Mg, Zn residue (all the percentages given in the present application are% by weight).
  • the creep resistance of this alloy although appreciably higher than that of ZamaJc or ZA alloys cast for a long time in a hot chamber, is still relatively low.
  • the object of the present invention is to provide an alloy as defined above, which has better creep resistance than the known alloy mentioned above.
  • the alloy contains, in% by weight: either 15-20 Al, 8-10 Cu, 0.01-2 Si, 0-0.1 Mg, 0-0.5 Ti , 0-0.5 Cr,
  • composition 0-1 Mn, 0-0.5 Nb and 0-0.1 of a metal or a mixture of rare earth metals, this composition being called hereinafter variant I, i.e. 25-30 Al, 15- 20 Cu, 0.01-2 Si, 0-0.1 Mg, 0-0.5 Ti, 0-0.5 Cr,
  • the two variants have, in the liquid state, at temperatures not exceeding 460 ° C., such low aggressiveness with respect to the steels that they are pourable in the chamber hot and on the other hand that variant I has in the cast state a good creep resistance and an excellent tensile strength, while variant II has in the cast state an excellent creep resistance and a good resistance to traction.
  • the contents of Al and Cu, mentioned above, must be respected; otherwise, the melting point of the alloy rises above 450 ° C, which means that the alloy is no longer pourable in a hot room, because its aggressiveness towards the casting equipment becomes too great above 460 ° C.
  • the silicon content is less than 0.01%, the tensile strength and creep resistance deteriorate.
  • a silicon content of more than 2% makes the alloy, in the molten state, too pasty and too aggressive.
  • alloys (a) and ( c) are the closest to the alloy according to the invention.
  • the alloy (a) has too low a Cu content and a too high Mg content for it to be poured in a hot chamber.
  • Alloy (c) also has too low a Cu content; moreover, it is extremely difficult to prepare an alloy containing 0.25-2% of rare earth metals, even in the oxidized state, because of the great affinity of these metals for oxygen.
  • Variant I advantageously contains 15-18% and preferably 15-17% Al.
  • the preferred Al and Cu contents of variant II are 25.5-28.5% and 15-18% respectively.
  • the preferential Si content of the two variants is 0.1-1%.
  • Both variants can contain - up to 0.1% Mg to improve, if necessary, the resistance to intercrystalline corrosion, *
  • Zn, Al and Cu, used to make the alloy have a purity of> 99.99%, ⁇ 99.95% and ⁇ 99.99% respectively, because it has been found that the the presence of impurities in the alloy adversely influences its fluidity and its mechanical properties.
  • zinc with a purity of> 99.995% and aluminum with a purity of> 99.97% are used.
  • the alloy contains a metal having a very high affinity for oxygen, such as for example Y, at least a part of this metal can be present in the oxidized state.
  • Test pieces of these alloys were poured into a hot chamber machine.
  • test pieces are those prescribed by the Technical Committee of European Zinc Producers for test pieces to be used in the tensile test of sheets and sheets of zinc and zinc alloys.
  • the test pieces were subjected to the creep test at 100 ° C. under a load of 40 MPa.
  • the creep curves, giving the elongation (in%) measured as a function of time (in hours), are shown in the attached diagram.
  • alloys according to the invention resist creep much better than the known alloys.
  • the tensile tests were carried out at room temperature with a tensile speed of 1 cm / min on test pieces with a thickness of 3 mm, manufactured as described above.
  • the present invention also relates to a process for manufacturing articles of a zinc-based alloy containing Al and Cu by die-casting in a hot chamber machine, this process being characterized in that the alloy is the alloy of the invention and in that the casting is carried out at a temperature equal to or less than 460 ° C.
  • the alloy of the invention is pourable in a hot room, it is necessarily pourable in a cold room and by gravity.
  • the present invention therefore also relates to a process for manufacturing articles of a zinc-based alloy containing Al and Cu by pressure casting in a cold chamber machine or by gravity casting, this process being characterized in that the alloy is the alloy of the invention.
  • the present invention also relates to the use of the alloy according to the invention as an anti-friction material.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Continuous Casting (AREA)
  • Forging (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Ink Jet (AREA)
  • Supercharger (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Ceramic Products (AREA)
  • Adornments (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Sliding-Contact Bearings (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Conductive Materials (AREA)
  • Mold Materials And Core Materials (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
EP95926933A 1994-07-18 1995-07-12 Zinklegierung für druckgiessen in warmer druckkammer Expired - Lifetime EP0771365B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9400676 1994-07-18
BE9400676A BE1008479A3 (fr) 1994-07-18 1994-07-18 Alliage de zinc coulable en chambre chaude.
PCT/EP1995/002820 WO1996002682A1 (fr) 1994-07-18 1995-07-12 Alliage de zinc coulable en chambre chaude

Publications (2)

Publication Number Publication Date
EP0771365A1 true EP0771365A1 (de) 1997-05-07
EP0771365B1 EP0771365B1 (de) 1998-11-04

Family

ID=3888263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95926933A Expired - Lifetime EP0771365B1 (de) 1994-07-18 1995-07-12 Zinklegierung für druckgiessen in warmer druckkammer

Country Status (16)

Country Link
EP (1) EP0771365B1 (de)
JP (1) JP3800345B2 (de)
KR (1) KR100343309B1 (de)
AT (1) ATE173029T1 (de)
AU (1) AU3113995A (de)
BE (1) BE1008479A3 (de)
BR (1) BR9507577A (de)
CA (1) CA2185013C (de)
CZ (1) CZ287825B6 (de)
DE (1) DE69505820T2 (de)
DK (1) DK0771365T3 (de)
ES (1) ES2126301T3 (de)
FI (1) FI114400B (de)
PE (1) PE12696A1 (de)
PL (1) PL178557B1 (de)
WO (1) WO1996002682A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100961081B1 (ko) * 2009-03-03 2010-06-08 임현규 고강도 경량 아연-알루미늄 합금
KR101955995B1 (ko) * 2017-03-21 2019-03-08 주식회사 지.에이.엠 고강도 아연-알루미늄 합금 및 고강도 아연-알루미늄 합금 주물
CN112522540A (zh) * 2020-12-01 2021-03-19 江苏同生特钢制造有限公司 一种锌合金铸件及其制备方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB769483A (en) * 1953-06-30 1957-03-06 Willi Neu Zinc aluminium alloy and process for the production thereof
US2870008A (en) * 1954-11-18 1959-01-20 Main Alloy Company Establishme Zinc-aluminium alloys and the method for producing same
US4789522A (en) * 1986-06-27 1988-12-06 Queen's University At Kingston Castable zinc-aluminum alloys

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9602682A1 *

Also Published As

Publication number Publication date
CZ5197A3 (en) 1997-04-16
DE69505820T2 (de) 1999-07-08
EP0771365B1 (de) 1998-11-04
PL318133A1 (en) 1997-05-12
FI114400B (fi) 2004-10-15
BE1008479A3 (fr) 1996-05-07
ES2126301T3 (es) 1999-03-16
JPH10502705A (ja) 1998-03-10
FI970177A (fi) 1997-01-16
CA2185013C (en) 2006-08-29
CZ287825B6 (en) 2001-02-14
AU3113995A (en) 1996-02-16
BR9507577A (pt) 1997-09-09
DE69505820D1 (de) 1998-12-10
CA2185013A1 (en) 1996-02-01
FI970177A0 (fi) 1997-01-16
DK0771365T3 (da) 1999-07-19
ATE173029T1 (de) 1998-11-15
WO1996002682A1 (fr) 1996-02-01
JP3800345B2 (ja) 2006-07-26
PE12696A1 (es) 1996-04-23
PL178557B1 (pl) 2000-05-31
KR100343309B1 (ko) 2002-11-25

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