EP0723028B1 - Sheet and plate of alloyed zinc - Google Patents

Sheet and plate of alloyed zinc Download PDF

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Publication number
EP0723028B1
EP0723028B1 EP95119186A EP95119186A EP0723028B1 EP 0723028 B1 EP0723028 B1 EP 0723028B1 EP 95119186 A EP95119186 A EP 95119186A EP 95119186 A EP95119186 A EP 95119186A EP 0723028 B1 EP0723028 B1 EP 0723028B1
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EP
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Prior art keywords
temperature
strip
der
purity
die
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EP95119186A
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German (de)
French (fr)
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EP0723028A3 (en
EP0723028A2 (en
Inventor
Klaus Drefahl
Frank Ulrich Dyllus
Adolf Stradmann
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Rheinzink GmbH and Co KG
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Rheinzink GmbH and Co KG
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    • 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
    • C22C18/02—Alloys based on zinc with copper as the next major constituent

Definitions

  • the invention relates to a method for producing Alloy zinc bands and sheets based on Fine zinc according to DIN 1706 with a degree of purity of at least 99.99%, preferably for construction.
  • Part 1 has been a standardized material for many Years, especially in construction, because of its excellent material properties used. From strips and sheets made from this material, regardless of the direction of rolling, crack-free by 180 ° foldable, remain unbreakable when re-bending and are characterized by high ductility in every type Forming, even in the case of cold forming. The Minimum requirements for the mechanical-technological Properties of those made from this material Strips and sheets are listed in DIN 17 770. In DIN 17 770, Part 2 are the dimensions for such strips and sheets specified.
  • the material is generally manufactured using the casting-rolling process, in which in an uninterrupted process (melting-casting-rolling Winding) tapes in specified thicknesses be produced, which then on scissor lines Narrow bands or panels can be cut.
  • the Material is well resistant to the atmosphere.
  • the surface initially reacts to form zinc oxide with the oxygen in the air.
  • zinc hydroxide forms by reaction with the Carbon dioxide in the air to a dense, adherent and water-insoluble top layer made of basic zinc carbonate is converted. This protective layer is responsible for the high corrosion resistance.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Panels For Use In Building Construction (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Bändern und Tafeln aus legiertem Zink auf der Basis von Feinzink nach DIN 1706 mit einem Reinheitsgrad von wenigstens 99,99%, vorzugsweise für das Bauwesen.The invention relates to a method for producing Alloy zinc bands and sheets based on Fine zinc according to DIN 1706 with a degree of purity of at least 99.99%, preferably for construction.

Dieser in der DE-C-1 758 489 beschriebene und nach DIN 17 770, Teil 1 genormte Werkstoff wird seit vielen Jahren, insbesondere im Bauwesen, wegen seiner vorzüglichen Werkstoffeigenschaften eingesetzt. Die aus diesem Werkstoff hergestellten Bänder und Bleche sind, unabhängig von der Walzrichtung, anrißfrei um 180° faltbar, bleiben bruchfrei beim Wiederaufbiegen und zeichnen sich durch eine hohe Duktilität bei jeder Art Umformung, auch bei Kaltverformung aus. Die Mindestanforderungen an die mechanisch technologischen Eigenschaften der aus diesem Werkstoff hergestellten Bänder und Bleche sind in DIN 17 770 aufgeführt. In DIN 17 770, Teil 2 sind die Maße für solche Bänder und Bleche angegeben.This described in DE-C-1 758 489 and after DIN 17 770, Part 1 has been a standardized material for many Years, especially in construction, because of its excellent material properties used. From strips and sheets made from this material, regardless of the direction of rolling, crack-free by 180 ° foldable, remain unbreakable when re-bending and are characterized by high ductility in every type Forming, even in the case of cold forming. The Minimum requirements for the mechanical-technological Properties of those made from this material Strips and sheets are listed in DIN 17 770. In DIN 17 770, Part 2 are the dimensions for such strips and sheets specified.

Die Herstellung des Werkstoffs erfolgt im allgemeinen unter Anwendung des Gieß-Walz-Verfahrens, bei dem in einem ununterbrochenen Verfahrensgang (Schmelzen- Gießen-Walzen Aufwickeln) Bänder in vorgegebenen Dicken hergestellt werden, die anschließend auf Scherenlinien zu Schmalbändern oder Tafeln geschnitten werden. Der Werkstoff ist in der Atmosphäre gut beständig. Die Oberfläche reagiert zunächst unter Bildung von Zinkoxid mit dem Sauerstoff der Luft. Durch Einwirkung von Wasser bildet dann Zinkhydroxid das durch Reaktion mit dem Kohlendioxid der Luft zu einer dichten, festhaftenden und wasserunlöslichen Deckschicht aus basischen Zinkcarbonat umgewandelt wird. Diese Schutzschicht ist verantwortlich für den hohen Korrosionswiderstand.The material is generally manufactured using the casting-rolling process, in which in an uninterrupted process (melting-casting-rolling Winding) tapes in specified thicknesses be produced, which then on scissor lines Narrow bands or panels can be cut. The Material is well resistant to the atmosphere. The The surface initially reacts to form zinc oxide with the oxygen in the air. By exposure to water then zinc hydroxide forms by reaction with the Carbon dioxide in the air to a dense, adherent and water-insoluble top layer made of basic zinc carbonate is converted. This protective layer is responsible for the high corrosion resistance.

Aus der DE-B-12 74 345 ist eine Zinkknetlegierung auf der Basis von Feinzink bekannt, die aus 0,05 bis 0,5 % Titan, weniger als 0,01 % Aluminium, 0,1 bis 1,7 % Kupfer, 0,003 bis 0,01 % Magnesium, Rest Zink, zusammengesetzt ist. Mit dieser Legierung soll sich eine wesentliche Steigerung der Festigkeit, Kriechfestigkeit und Härte ohne Herabsetzung des Formänderungsvermögens erreichen lassen, wenn übliche Verarbeitungsbedingungen eingehalten werden.From DE-B-12 74 345 a zinc alloy is on the Known base of fine zinc, which consists of 0.05 to 0.5% titanium, less than 0.01% aluminum, 0.1 to 1.7% copper, 0.003 up to 0.01% magnesium, balance zinc. With This alloy is said to be a significant increase of strength, creep resistance and hardness without Reduce the ability to change shape, if normal processing conditions are observed.

Es ist die Aufgabe der vorliegenden Erfindung, die mechanischen Eigenschaften, insbesondere die Zugfestigkeit, der eingangs angeführten Zinklegierung deutlich zu verbessern, ohne jedoch deren gute Duktivität zu beeinträchtigen.It is the object of the present invention that mechanical properties, especially the Tensile strength of the zinc alloy mentioned at the beginning to improve significantly, but without their good ductility to affect.

Die Lösung dieser Aufgabe besteht in einem Verfahren gemäß Anspruch 1 und/oder Anspruch 2.This object is achieved by a method according to claim 1 and / or claim 2.

Aus der zum Stand der Technik gehörenden Feinzinklegierung (I) der Zusammensetzung 0,09 Gew.% Titan, 0,13 Gew.% Kupfer und 0,007 Gew.% Aluminium, Rest Feinzink von 99,995% Zink und der erfindungsgemäßen Feinzinklegierung (II) mit der Zusammensetzung 0,10 Gew.% Titan 0,15 Gew.% Kupfer, 0,007 Gew.% Aluminium und 0,01 Gew.% Magnesium wurden Bänder gegossen und auf das Endmaß von 0,8 mm fertiggewalzt und anschließend die mechanischen Eigenschaften dieser Bänder nach DIN 17 770 Teil 1 zu Vergleichszwecken gemessen.From the state of the art Fine zinc alloy (I) of the composition 0.09% by weight Titanium, 0.13% by weight copper and 0.007% by weight aluminum, balance Fine zinc of 99.995% zinc and the invention Fine zinc alloy (II) with the composition 0.10% by weight Titanium 0.15% by weight copper, 0.007% by weight aluminum and 0.01 % By weight of magnesium tapes were cast and to the final dimension of 0.8 mm and then the mechanical properties of these tapes according to DIN 17 770 Part 1 measured for comparison purposes.

Folgende mechanische Eigenschaften wurden ermittelt:

  • 1. Härteprüfung Die Prüfung der Vickershärte (HV 1) erfolgte gemäß DIN 50 133, Teil 2. Fig. 1 zeigt das Ergebnis nach einer Auslagerung der Versuchswerkstoffe bei 60 °C und einer Auslagerungsdauer von bis zu 100 Stunden. Das aus der erfindungsgemäßen Feinzinklegierung (II) hergestellte Band besitzt bei Raumtemperatur eine um etwa 100% größere Vickershärte verglichen mit derjenigen des Bandes als der zu Stand der Technik gehörenden Feinzinklegierung (I). Eine Auslagerung bei 60°C verändert diese Relation nicht.
  • 2. 1%-Dehngrenze (N/mm2) Gemäß Fig. 2 und Fig. 3 ist die erfindungsgemäße Feinzinklegierung (II) hinsichtlich 1%-Dehngrenze der entsprechenden mechanischen Eigenschaften der bekannten Feinzinklegierung (I) um etwa 100%, längs und quer zur Walzrichtung gemessen, überlegen. Dies gilt auch bei relativ hohen Temperaturen von bis zu 100°C.
  • 3. Wie Fig. 4 und 5 zu entnehmen ist, ist die erfindungsgemäße Feinzinklegierung (II) hinsichtlich der Zugfestigkeit (N/mm2) um etwa 100% der bekannten Feinzinklegierung (I) überlegen.
  • 4. Bruchdehnung A5(%) Gemäß Fig. 6 und 7 bewegt sich die Bruchdehnung für die erfindungsgemäße wie für die bekannte Feinzinklegierung in einem für technische Belange zufriedenstellenden Bereich sowohl längs als auch quer zur Walzrichtung.
  • 5. Zeitstandfestigkeit Rm/100 (N/mm2) Die Zeitstandversuche erfolgten gemäß DIN 50 118 bei Raumtemperatur 60°C und 100°C. Wie Fig. 8 und 9 zeigen, ist längs und quer zur Walzrichtung die Festigkeit der erfindungsgemäßen Feinzinklegierung (II) im Durchschnitt 50% bis 80% höher als die der bekannten Feinzinklegierung (I).
  • 6. Faltversuche Es wurden Proben von 60 x 20 mm längs und quer zu Walzenrichtung ohne Zwischenlage um 180 Grad gefaltet. Die Prüftemperaturen betrugen 22°C, 0°C und -10°C. Die Proben waren unabhängig von der Walzrichtung anrißfrei um 180 Grad faltbar und bruchfrei beim Wiederaufbiegen.
  • 7. Dauerschwingversuche Die mit Blechproben gemäß DIN 50 100 erfolgten Dauerschwingversuche längs zur Walzrichtung mit einer Prüffrequenz von 30 Hz bei einer Temperatur von 22°C führten zu Dauerfestigkeitswerten von 68 N/mm2 für die erfindungsgemäße Feinzinklegierung (II) und zu 55 N/mm2 für die bekannte Feinzinklegierung (I).
  • 8. Bruchfestigkeit (N/mm2) Die Bruchfestigkeit wurde längs und quer zur Walzrichtung als Funktion der Temperatur geprüft. Wie aus Fig. 10 und 11 entnommen werden kann, ist die erfindungsgemäße Feinzinklegierung (II) derjenigen mit der bekannten (I) Zusammensetzung deutlich überlegen. Werden die Proben beidseitig mit einer Kerbe der Spannungskonzentration αK=2.6 versehen, liegt die Bruchfestigkeit über der der glatten Proben. Verantwortlich hierfür ist die ungleichmäßige Spannungsverteilung im Prüfquerschnitt und der damit verbundene räumliche Spannungszustand. Daraus ist abzuleiten, daß im Sinne einer Randkerbe geschädigte Bauteile unter statischer Belastung nicht versagen werden.
    • The following mechanical properties were determined:
  • 1. Hardness test The Vickers hardness (HV 1) was tested in accordance with DIN 50 133, part 2. FIG. 1 shows the result after aging of the test materials at 60 ° C. and a aging period of up to 100 hours. The strip produced from the fine zinc alloy (II) according to the invention has a Vickers hardness which is about 100% greater at room temperature compared to that of the strip than the fine zinc alloy (I) belonging to the prior art. An aging at 60 ° C does not change this relation.
  • 2. 1% proof stress (N / mm 2 ) According to FIGS. 2 and 3, the fine zinc alloy (II) according to the invention is about 100%, lengthways and transversely with respect to the 1% proof stress of the corresponding mechanical properties of the known fine zinc alloy (I) measured to the rolling direction, consider. This also applies to relatively high temperatures of up to 100 ° C.
  • 3. As can be seen from FIGS. 4 and 5, the fine zinc alloy (II) according to the invention is superior in tensile strength (N / mm 2 ) by about 100% of the known fine zinc alloy (I).
  • 4. Elongation at break A5 (%) According to FIGS. 6 and 7, the elongation at break for the fine zinc alloy according to the invention and for the known fine zinc alloy is in a range which is satisfactory for technical reasons, both longitudinally and transversely to the rolling direction.
  • 5. Creep rupture strength Rm / 100 (N / mm 2 ) The creep rupture tests were carried out in accordance with DIN 50 118 at room temperature 60 ° C and 100 ° C. As shown in FIGS. 8 and 9, the strength of the fine zinc alloy (II) along and across the rolling direction is on average 50% to 80% higher than that of the known fine zinc alloy (I).
  • 6. Folding tests Samples of 60 x 20 mm were folded longitudinally and transversely to the direction of the roll without an intermediate layer by 180 degrees. The test temperatures were 22 ° C, 0 ° C and -10 ° C. Regardless of the rolling direction, the specimens were foldable by 180 degrees without breaks and unbreakable when re-bent.
  • 7. Fatigue tests The fatigue tests carried out with sheet metal samples in accordance with DIN 50 100 along the rolling direction with a test frequency of 30 Hz at a temperature of 22 ° C led to fatigue strength values of 68 N / mm 2 for the fine zinc alloy (II) and 55 N / mm 2 for the well-known fine zinc alloy (I).
  • 8. Breaking strength (N / mm 2 ) The breaking strength was tested along and across the rolling direction as a function of temperature. As can be seen from FIGS. 10 and 11, the fine zinc alloy (II) according to the invention is clearly superior to that with the known (I) composition. If the samples are provided on both sides with a notch of the stress concentration α K = 2.6, the breaking strength is higher than that of the smooth samples. This is due to the uneven stress distribution in the test cross-section and the associated spatial stress state. From this it can be deduced that components damaged in the sense of an edge notch will not fail under static load.

    • Die vorliegenden Untersuchungsergebnisse belegen, daß die mechanischen Eigenschaften der bekannten Feinzinklegierung durch das Verfahren gemäß Anspruch 1 und/oder Anspruch 2 ganz erheblich verbessert werden können und damit ein breiterer Anwendungsbereich der Feinlegierung erreicht wird.The available test results show that the mechanical properties of the known Fine zinc alloy can be improved considerably by the method according to claim 1 and / or claim 2 can and thus a wider application of the Fine alloy is achieved.

    Claims (2)

    1. A process of producing strips and slabs of alloyed zinc, comprising 0.05 to 0.2 wt-% Ti, 0.02 to 0.2 wt-% Cu, 0.005 to 0.05 wt-% Al, and (i) 0.005 to 0.04 wt-% Mg or 0.01 to 0.1 wt-% Li, or (ii) 0.005 to 0.0075 wt-% Mg and 0.01 to 0.45 wt-% Li, and the rest high-purity zinc with a degree of purity of at least 99.99 %, produced according to the cast-rolling process, wherein the melt having a temperature of ≥ 420°C is continuously cast to form a strip between rotating metal strips used as molding elements and directly subsequent thereto is rolled down to the predetermined thickness in several stages, where in the last rolling stage the strip is rolled at a temperature of 100 to 250°C, preferably 100 to 170°C, which lies above the recrystallization temprature.
    2. A process of producing strips and slabs of alloyed zinc, comprising 0.05 to 0.2 wt-% Ti, 0.02 to 0.2 wt-% Cu, 0.005 to 0.05 wt-% Al, and (i) 0.005 to 0.04 wt-% Mg or 0.01 to 0.1 wt-% Li, or (ii) 0.005 to 0.0075 wt-% Mg and 0.01 to 0.45 wt-% Li, and the rest high-purity zinc with a degree of purity of at least 99.99 %, produced according to the cast-rolling process, wherein the melt having a temperature of ≥ 420°C is continuously cast to form a strip between rotating metal strips used as molding elements and directly subsequent thereto is rolled down to the predetermined thickness in several stages, where in the last rolling stage the strip is rolled at a temperature below the recrystallization temperature and subsequently heated to a temperature of 150 to 300°C for a period of 0.75 to 2.5 hours.
    EP95119186A 1994-12-24 1995-12-06 Sheet and plate of alloyed zinc Expired - Lifetime EP0723028B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE4446771A DE4446771A1 (en) 1994-12-24 1994-12-24 Alloy zinc strips and sheets
    DE4446771 1994-12-24

    Publications (3)

    Publication Number Publication Date
    EP0723028A2 EP0723028A2 (en) 1996-07-24
    EP0723028A3 EP0723028A3 (en) 1996-10-16
    EP0723028B1 true EP0723028B1 (en) 2000-05-31

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    Application Number Title Priority Date Filing Date
    EP95119186A Expired - Lifetime EP0723028B1 (en) 1994-12-24 1995-12-06 Sheet and plate of alloyed zinc

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    EP (1) EP0723028B1 (en)
    DE (2) DE4446771A1 (en)
    ES (1) ES2148413T3 (en)
    SI (1) SI9500382A (en)

    Families Citing this family (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10156475A1 (en) * 2001-11-16 2003-06-05 Rheinzink Gmbh Process for the production of dark protective layers on flat products made of titanium zinc
    EP2302084A1 (en) * 2009-06-29 2011-03-30 Grillo-Werke AG Zinc alloy with improved mechanical-chemical characteristics
    ATE557109T1 (en) 2009-06-29 2012-05-15 Grillo Werke Ag ZINC ALLOY ESPECIALLY AS A WROUGHT ALLOY
    CN108281227A (en) * 2018-03-13 2018-07-13 鞍山至镁科技有限公司 The preparation method of magnesium alloy foil in a kind of shielded cable and its shielded layer
    CN114045414A (en) * 2021-10-28 2022-02-15 苏州市祥冠合金研究院有限公司 Zinc alloy plate strip with high tensile strength and preparation process thereof

    Family Cites Families (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE1274345B (en) * 1962-08-02 1968-08-01 Stolberger Zink Ag Wrought zinc alloy and process for its manufacture and processing
    GB1052566A (en) * 1965-03-11 1900-01-01
    LU55104A1 (en) * 1967-12-15 1969-07-17
    DE2714887C3 (en) * 1977-04-02 1980-07-17 Vereinigte Deutsche Metallwerke Ag, 6000 Frankfurt Use of a low-alloy zinc material
    DE2909542C3 (en) * 1979-03-10 1981-11-19 Vereinigte Zinkwerke Gmbh, 5190 Stolberg Use of a low-alloy zinc wrought alloy
    DE3043488A1 (en) * 1979-12-03 1981-06-19 Centre de Recherches Métallurgiques-Centrum voor Research in de Metallurgie-Association sans but lucratif-Vereniging zonder winstoogmerk, Bruxelles ZINC ALLOY WITH INCREASED CRACKING RESISTANCE
    JPH0627296B2 (en) * 1989-06-29 1994-04-13 同和鉱業株式会社 Zinc alloy for fuses
    US5071620A (en) * 1990-08-31 1991-12-10 International Lead Zinc Research Organization, Inc. High creep strength zinc alloys

    Also Published As

    Publication number Publication date
    DE4446771A1 (en) 1996-06-27
    DE59508423D1 (en) 2000-07-06
    ES2148413T3 (en) 2000-10-16
    SI9500382A (en) 1996-06-30
    EP0723028A3 (en) 1996-10-16
    EP0723028A2 (en) 1996-07-24

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