EP2989224B1 - Alliage cuivreux de fonderie pour machines asynchrones - Google Patents

Alliage cuivreux de fonderie pour machines asynchrones Download PDF

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Publication number
EP2989224B1
EP2989224B1 EP14718324.8A EP14718324A EP2989224B1 EP 2989224 B1 EP2989224 B1 EP 2989224B1 EP 14718324 A EP14718324 A EP 14718324A EP 2989224 B1 EP2989224 B1 EP 2989224B1
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Prior art keywords
elements
weight
group
alloy
copper alloy
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EP14718324.8A
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German (de)
English (en)
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EP2989224A1 (fr
Inventor
Timo ALLMENDINGER
Tony Robert NOLL
Joachim Riedle
Gerhard Thumm
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Wieland Werke AG
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Wieland Werke AG
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/04—Alloys based on copper with zinc as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/02—Alloys based on copper with tin as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent

Definitions

  • the invention relates to copper casting alloys and current-carrying structural parts made therefrom by means of primary molding processes.
  • the invention relates to cast squirrel-cage rotors for asynchronous machines.
  • the electrical conductivity is only slightly reduced by the alloy elements.
  • the material must have good castability. Zirconium and / or chromium are often used as alloy components.
  • JP 56010059 A a copper alloy containing zinc, chromium, zirconium and titanium is proposed for the die casting process.
  • JP 2011 027280 A discloses a copper alloy with 0.1 to 2 wt% aluminum, tin from 0.1 wt% to aluminum content, zinc from 0.05 wt% to aluminum content and phosphorus from 0.001 to 0.1 wt. -%. Tubes for heat exchangers are made from the alloy.
  • Copper materials processed by metal forming processes are characterized by a higher strength than copper materials in the as-cast state.
  • the person skilled in the art can therefore give no indication of the above-mentioned prior art Find out which copper alloy has a favorable combination of properties with regard to electrical conductivity and strength even when cast.
  • the invention is therefore based on the object of specifying improved copper casting alloys in terms of strength, conductivity and castability and improved current-carrying structural parts in terms of strength and conductivity.
  • the invention is intended to provide improved, one-piece cast squirrel-cage rotors for asynchronous machines.
  • the alloy elements should also be selected with regard to their effects on health and the environment. In particular, lead and cadmium should be avoided.
  • the invention is given with respect to a copper alloy by the features of claim 1, with regard to a structural part with the features of claim 10 and alternatively with claim 12 and with respect to a squirrel-cage rotor with the features of claim 11 and alternatively with claim 13.
  • the further back claims relate to advantageous developments and further developments of the invention.
  • the invention is based on the consideration that the strength of metals is increased by the incorporation of foreign atoms. This effect is particularly interesting for cast alloys, because it enables high strength values to be achieved without further forming steps.
  • a The elements Al, Sn, Ni and Zn have a particularly great effect on solid solution strengthening in copper. If the strength of pure copper is to be increased by solid solution strengthening, the addition of Al and Sn is particularly worthwhile. It is also known that the addition of alloy elements fundamentally worsens the electrical and thermal conductivity of pure copper. In the field of mixed crystal formation, however, the conductivity of copper is influenced relatively little by the elements Zn, Ag, Ni, Sn and Al. If the electrical conductivity of copper is to be impaired as little as possible, the addition of Zn and Ag is particularly worthwhile.
  • a casting material can be found that has a particularly favorable combination of strength and conductivity.
  • the content of the individual elements should be at least 0.05% by weight and at most 0.5% by weight.
  • the effect of the alloy elements is too low for element contents less than 0.05% by weight.
  • the sum of the element contents can preferably be at least 0.25% by weight.
  • element contents greater than 0.5% by weight undesired segregation of the alloy or segregation can occur.
  • the content of the individual elements can preferably be at most 0.3% by weight.
  • Alloying three or more elements creates an alloy whose melting interval is longer than the melting interval of alloys with fewer elements. This has a favorable effect on the castability of the material.
  • the copper alloy preferably contains the element Sn. This results in particularly favorable properties.
  • the copper alloy contains the element Ag. This results in particularly favorable properties with regard to electrical conductivity.
  • 0.01 to 0.2% by weight of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb can be added to the alloy. These elements result in grain refinement of the cast structure and thus increase the strength of the cast material. By deoxidizing the melt you can also reduce the gas intake.
  • the sum of the contents of the elements Mg, Ti, Zr, B, P, As, Sb can be limited to a maximum of 0.5% by weight.
  • the content of the individual elements can be limited to a maximum of 0.07% by weight.
  • the increase in strength is not always sufficient at contents of less than 0.06% by weight. With element contents greater than 0.15% by weight, the electrical conductivity can be reduced too much, for example below 75% IACS.
  • the sum of the proportions of the elements from the group consisting of Ag, Ni, Zn, Sn and Al is preferably at least 0.20% by weight and at most 0.35% by weight.
  • the proportions of the alloy elements can preferably be selected such that the ratio by weight of two arbitrary alloy elements from the group consisting of Ag, Ni, Zn, Sn and Al is at most 1.5.
  • the more common of the two alloying elements forms the numerator of the quotient to be calculated.
  • This weight ratio is particularly preferably at most 1.3.
  • the elements selected from the group consisting of Ag, Ni, Zn, Sn and Al for the respective alloy are alloyed in approximately equal parts by weight.
  • the copper alloy can have the following composition in% by weight: Ag: 0.06 to 0.5% Ni: 0.06 to 0.5% Zn: 0.06 to 0.5% Balance Cu and unavoidable impurities, optionally 0.01 to 0.2% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb.
  • Such an alloy has an electrical conductivity of at least 68% IACS and can exceed the strength of pure copper by up to 35%.
  • the copper alloy can have the following composition in% by weight: Ag: 0.06 to 0.15% Ni: 0.06 to 0.15% Zn: 0.06 to 0.15% Balance Cu and unavoidable impurities, optionally 0.01 to 0.2% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb.
  • IACS IACS
  • such an alloy has an electrical conductivity that is approximately equal to that of a copper alloy which contains 1% by weight of Ag (CuAg1).
  • the increase in strength compared to pure copper in the as-cast state is approximately 20%.
  • Such an alloy thus has a very favorable combination of properties.
  • the relative increase in strength is greater than the relative decrease in conductivity. Due to the low proportion of alloys, the alloy is at the cost level of commercially available copper alloys.
  • the copper alloy can have the following composition in% by weight: Ag: 0.06 to 0.15% Sn: 0.06 to 0.15% Ni: 0.06 to 0.15% Balance Cu and unavoidable impurities, optionally 0.01 to 0.2% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb.
  • Such an alloy has an electrical conductivity of approximately 85% IACS.
  • the increase in strength compared to pure copper in the as-cast state is approximately 20%.
  • Such an alloy thus has a very favorable combination of properties.
  • the relative increase in strength is greater than the relative decrease in conductivity. Due to the low proportion of alloys, the alloy is at the cost level of commercially available copper alloys.
  • the copper alloy can have the following composition in% by weight: Ag: 0.06 to 0.15% Zn: 0.06 to 0.15% Al: 0.06 to 0.15% Balance Cu and unavoidable impurities, optionally 0.01 to 0.2% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb.
  • Such an alloy has an electrical Conductivity of about 85% IACS. The increase in strength compared to pure copper in the as-cast state is approximately 10%. Due to the elements Zn and Al, this alloy is an inexpensive alternative.
  • Another advantageous copper alloy can have the following composition in% by weight: Sn: 0.06 to 0.15% Zn: 0.06 to 0.15% Al: 0.06 to 0.15% Balance Cu and unavoidable impurities, optionally 0.01 to 0.2% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb.
  • Such an alloy has an electrical conductivity of approximately 80% IACS.
  • the increase in strength compared to pure copper in the as-cast state is approximately 10%. Since this alloy does not contain silver, it is a particularly inexpensive alternative.
  • a further aspect of the invention relates to current-carrying structural parts made of copper alloys, the structural parts being produced by means of an original molding process and the copper alloys having the following composition in% by weight: 0.05 to 0.5% Ag, in each case 0.05 to 0.5 % of at least two elements from the group consisting of Ni, Zn, Sn and Al, balance Cu and inevitable impurities, optionally 0.01 to 0.2% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb exists.
  • the copper alloy of the structural part can have the following composition in% by weight: Sn: 0.06 to 0.15%, Zn: 0.06 to 0.15%, Al: 0.06 to 0.15%, Balance Cu and unavoidable impurities, optionally 0.01 to 0.2% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb.
  • Such structural parts can be, for example, switches, commutators, grinding wheels, busbars, contacts, brushes, bridges, components for switching devices, conductor bars or short-circuit rings of cage rotors or other components.
  • Primary molding processes are understood to mean casting processes such as, for example, die casting, investment casting, full mold casting or other processes.
  • the above-mentioned casting process the cast body essentially already has the shape of the desired structural part. Separation processes can be used to carry out one or more further processing steps which slightly change the shape of the structural part. Examples of this are cutting off the sprue or reworking the surface of the structural part.
  • the finished construction part is therefore in the as-cast state.
  • the copper alloys according to the invention have a higher strength than pure copper due to the solidification of the solid solution in the as-cast state.
  • the electrical conductivity is relatively little reduced compared to pure copper.
  • the alloys according to the invention also have good castability: they show only a slight tendency to absorb gas and are characterized by a good mold filling capacity.
  • an alloy adapted to the respective application can be found.
  • the Ag content can be limited to 0.15% by weight.
  • the metal costs of the alloys according to the invention are increased by a maximum of 15% compared to pure copper.
  • Construction parts produced by master molding processes are less expensive to manufacture than construction parts that are made from semi-finished products.
  • the total cost of the construction parts according to the invention can consequently be cheaper than the total costs of other construction parts.
  • the alloy according to the invention can optionally contain 0.01 to 0.2% by weight of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb. These elements result in grain refinement of the cast structure and thus increase the strength of the cast material. By deoxidizing the melt, they can also reduce gas absorption.
  • the copper alloy has the following composition in% by weight: 0.05 to 0.5% Ag, in each case 0.05 to 0.5% of at least two elements from the group consisting of Ni, Zn, Sn and Al, Balance Cu and unavoidable impurities, optionally 0.01 to 0.2% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb.
  • the copper alloy of the cage rotor can have the following composition in% by weight: Sn: 0.06 to 0.15%, Zn: 0.06 to 0.15%, Al: 0.06 to 0.15%, Balance Cu and unavoidable impurities, optionally 0.01 to 0.2% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb.
  • the invention is based on the idea of casting conductor bars and short-circuit rings of cage rotors in one piece. Suitable casting processes for this can be die casting, investment casting, full mold casting and other processes. Due to their high electrical conductivity, copper alloys are well suited for the manufacture of cage rotors. Since the high speeds of the asynchronous machines exert large forces, in particular on the conductor bars of the squirrel-cage rotors, the copper alloys used must have high strength even when cast. Copper alloys which have the following composition in% by weight are therefore particularly suitable: 0.05 to 0.5% Ag, in each case 0.05 to 0.5% of at least two elements from the group consisting of Ni, Zn, Sn and Al exists, rest Cu and inevitable impurities.
  • the copper alloys according to the invention have a higher strength than pure copper due to the solidification of the solid solution in the as-cast state.
  • the electrical conductivity is relatively little reduced compared to pure copper.
  • the alloys according to the invention also have good castability: they show only a slight tendency to absorb gas and are characterized by a good mold filling capacity.
  • the alloy according to the invention can optionally contain 0.01 to 0.2% by weight of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb. These elements result in grain refinement of the cast structure and thus increase the strength of the cast material. Through an appropriate selection of the alloying elements and the alloying composition, an alloy adapted to the respective application can be found.
  • the following alloys have proven to be particularly advantageous: Copper alloy with the following composition in% by weight: Ag: 0.06 to 0.15% Ni: 0.06 to 0.15% Zn: 0.06 to 0.15% Balance Cu and unavoidable impurities; Alternatively: copper alloy with the following composition in% by weight: Ag: 0.06 to 0.15% Sn: 0.06 to 0.15% Ni: 0.06 to 0.15% Balance Cu and unavoidable impurities; Alternatively: copper alloy with the following composition in% by weight: Ag: 0.06 to 0.15% Zn: 0.06 to 0.15% Al: 0.06 to 0.15% Balance Cu and unavoidable impurities; Alternatively: copper alloy with the following composition in% by weight: Sn: 0.06 to 0.15% Zn: 0.06 to 0.15% Al: 0.06 to 0.15% Balance Cu and unavoidable impurities.
  • Each of the aforementioned alloys can optionally have 0.01 to 0.2% by weight of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb added.
  • the metal costs of the alloys according to the invention are increased by a maximum of 15% compared to pure copper.
  • Table 1 shows a compilation of the alloys examined.
  • the composition of the sample, the determined tensile strength R m in the as-cast state and the relative electrical conductivity, expressed by the IACS value, are given for each alloy.
  • the metal costs resulting from the alloy composition are standardized to the metal costs of pure copper (sample no. 1).
  • Sample No. 2 is a reference alloy with 99% copper and 1% silver. This alloy has attractive properties in terms of strength and conductivity, but due to the high metal costs, it can only be used economically in very special applications.
  • Sample No. 3 is a copper alloy with approximately 0.5% silver, 0.5% nickel and 0.5% zinc. This alloy achieves a strength that is approx. 35% higher than that of pure copper.
  • the electrical conductivity is 68% IACS.
  • Sample No. 4 is a copper alloy with approximately 0.1% silver, 0.1% nickel and 0.1% zinc. This alloy achieves a strength that is approx. 20% higher than that of pure copper.
  • the electrical conductivity is 91% IACS.
  • the relative increase in strength is thus significantly greater than the relative Decrease in electrical conductivity.
  • This surprising combination of properties of the alloy is not to be expected from the individual contributions of the individual alloy elements.
  • the relative increase in metal costs is less than the relative increase in strength and can therefore be compensated for, for example, by reducing the cross section of the conductor bars. This alloy thus offers a very attractive combination of properties for use in cast squirrel cage rotors.
  • Sample No. 5 is a copper alloy with approximately 0.1% silver, 0.13% tin and 0.1% nickel. This alloy achieves a strength that is approx. 20% higher than that of pure copper.
  • the electrical conductivity is 84% IACS.
  • the relative increase in strength is therefore greater than the relative decrease in electrical conductivity. This surprising combination of properties of the alloy is not to be expected from the individual contributions of the individual alloy elements.
  • the relative increase in metal costs is less than the relative increase in strength.
  • Sample No. 6 is a copper alloy with approximately 0.1% silver, 0.1% zinc and 0.1% aluminum. This alloy achieves a strength that is approx. 6% higher than that of pure copper.
  • the electrical conductivity is 84% IACS. Due to the elements Zn and Al, this alloy is an inexpensive alternative.
  • Sample No. 7 is a copper alloy with approximately 0.1% tin, 0.1% zinc and 0.1% aluminum. This alloy achieves a strength that is approx. 8% higher than that of pure copper. The electrical conductivity is 78% IACS. Since this alloy does not contain silver, it is a particularly inexpensive alternative.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Conductive Materials (AREA)
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Claims (13)

  1. Alliage de cuivre ayant la composition suivante [en % en poids] :
    0,05 à 0,5 % de Ag,
    dans chaque cas 0,05 à 0,5 % d'au moins deux éléments du groupe qui consiste en Ni, Zn, Sn et Al,
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb.
  2. Alliage de cuivre selon la revendication 1 ayant la composition suivante [en % en poids]:
    dans chaque cas 0,05 à 0,5 % de deux éléments du groupe qui consiste en Ni, Zn, Sn et Al,
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb.
  3. Alliage de cuivre selon la revendication 2 ayant la composition suivante [en % en poids]:
    0,06 à 0,3% de Ag,
    dans chaque cas 0,06 à 0,3% de deux éléments du groupe qui consiste en Ni, Zn, Sn et Al,
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb.
  4. Alliage de cuivre selon la revendication 3 ayant la composition suivante [en % en poids]:
    0,06 à 0,15 % de Ag,
    dans chaque cas 0,06 à 0,15 % de deux éléments du groupe qui consiste en Ni, Zn, Sn et Al,
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb.
  5. Alliage de cuivre selon l'une des revendications 1 à 4, caractérisé en ce que le rapport des proportions en poids dans chaque cas de deux éléments d'alliage du groupe qui consiste en Ag, Ni, Zn, Sn et Al est au maximum de 1,5.
  6. Alliage de cuivre selon l'une des revendications 2 ou 5 ayant la composition suivante [en % en poids]:
    Ag: 0,06 à 0,5 %
    Ni: 0,06 à 0,5 %
    Zn: 0,06 à 0,5 %
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb.
  7. Alliage de cuivre selon la revendication 6 ayant la composition suivante [en % en poids]:
    Ag: 0,06 à 0,15 %
    Ni: 0,06 à 0,15 %
    Zn: 0,06 à 0,15 %
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb.
  8. Alliage de cuivre selon l'une des revendications 4 ou 5 ayant la composition suivante [en % en poids]:
    Ag: 0,06 à 0,15 %
    Sn: 0,06 à 0,15 %
    Ni: 0,06 à 0,15 %
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb.
  9. Alliage de cuivre selon l'une des revendications 4 ou 5 ayant la composition suivante [en % en poids]:
    Ag: 0,06 à 0,15 %
    Zn: 0,06 à 0,15 %
    Al: 0,06 à 0,15 %
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb.
  10. Pièce de construction conduisant le courant en un alliage de cuivre selon l'une des revendications précédentes, caractérisée en ce que la pièce de construction est fabriquée au moyen d'un procédé de moulage en la forme originale.
  11. Induit à cage d'écureuil en un alliage de cuivre selon l'une des revendications 1 à 9 dans lequel l'induit à cage d'écureuil comprend plusieurs barres conductrices et deux bagues de court-circuit, caractérisé en ce que les barres conductrices et les bagues de court-circuit sont coulées en une seule pièce.
  12. Pièce de construction conduisant le courant en un alliage de cuivre ayant la composition suivante [en % en poids]:
    Sn: 0,06 à 0,15 %
    Zn: 0,06 à 0,15 %
    Al: 0,06 à 0,15 %
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb,
    caractérisée en ce que la pièce de construction est fabriquée au moyen d'un procédé de moulage en la forme originale.
  13. Induit à cage d'écureuil en un alliage de cuivre ayant la composition suivante [en % en poids]:
    Sn: 0,06 à 0,15 %
    Zn: 0,06 à 0,15 %
    Al: 0,06 à 0,15 %
    le reste Cu et des impuretés inévitables,
    éventuellement 0,01 à 0,2 % d'un ou plusieurs éléments du groupe qui consiste en Mg, Ti, Zr, B, P, As, Sb,
    dans lequel l'induit à cage d'écureuil comprend plusieurs barres conductrices et deux bagues de court-circuit, caractérisé en ce que les barres conductrices et les bagues de court-circuit sont coulées en une seule pièce.
EP14718324.8A 2013-04-26 2014-04-10 Alliage cuivreux de fonderie pour machines asynchrones Active EP2989224B1 (fr)

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DE102013007274.3A DE102013007274B4 (de) 2013-04-26 2013-04-26 Konstruktionsteil aus einer Kupfergusslegierung
PCT/EP2014/000957 WO2014173498A1 (fr) 2013-04-26 2014-04-10 Alliage cuivreux de fonderie pour machines asynchrones

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US (1) US9973068B2 (fr)
EP (1) EP2989224B1 (fr)
JP (1) JP6254679B2 (fr)
KR (1) KR102195080B1 (fr)
CN (1) CN105164292A (fr)
DE (1) DE102013007274B4 (fr)
ES (1) ES2820568T3 (fr)
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WO (1) WO2014173498A1 (fr)

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CN106521232B (zh) * 2016-11-22 2018-05-18 陕西斯瑞新材料股份有限公司 一种高强、中导新型铜合金Cu-Zn-Cr-RE导条及制备方法
CN107511469A (zh) * 2017-10-13 2017-12-26 安阳恒安电机有限公司 一种电机转子鼠笼低压铸铜设备、铸铜及其铸铜方法
RU2709909C1 (ru) * 2018-11-26 2019-12-23 Федеральное государственное автономное образовательное учреждение высшего образования "Белгородский государственный национальный исследовательский университет" (НИУ "БелГУ") Низколегированный медный сплав
KR20230030578A (ko) * 2020-06-30 2023-03-06 미쓰비시 마테리알 가부시키가이샤 구리 합금, 구리 합금 소성 가공재, 전자·전기 기기용 부품, 단자, 버스 바, 리드 프레임, 방열 기판
CN113234955A (zh) * 2021-04-30 2021-08-10 浙江利丰电器股份有限公司 用于换向器铜片制作的银铜合金材料

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US9973068B2 (en) 2018-05-15
JP2016518525A (ja) 2016-06-23
ES2820568T3 (es) 2021-04-21
EP2989224A1 (fr) 2016-03-02
KR102195080B1 (ko) 2020-12-28
US20160056698A1 (en) 2016-02-25
WO2014173498A1 (fr) 2014-10-30
DE102013007274B4 (de) 2020-01-16
CN105164292A (zh) 2015-12-16
RU2015150333A (ru) 2017-06-02
DE102013007274A1 (de) 2014-10-30
RU2661691C2 (ru) 2018-07-19
JP6254679B2 (ja) 2017-12-27
KR20160002690A (ko) 2016-01-08

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