EP2989224A1 - Cast copper alloy for asynchronous machines - Google Patents
Cast copper alloy for asynchronous machinesInfo
- Publication number
- EP2989224A1 EP2989224A1 EP14718324.8A EP14718324A EP2989224A1 EP 2989224 A1 EP2989224 A1 EP 2989224A1 EP 14718324 A EP14718324 A EP 14718324A EP 2989224 A1 EP2989224 A1 EP 2989224A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elements
- group
- copper alloy
- weight
- alloy
- 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
Links
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 63
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 36
- 229910052709 silver Inorganic materials 0.000 claims abstract description 35
- 229910052718 tin Inorganic materials 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 30
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 29
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 28
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 28
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 27
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 27
- 229910052796 boron Inorganic materials 0.000 claims abstract description 27
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 27
- 239000012535 impurity Substances 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 238000005275 alloying Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 9
- 241000555745 Sciuridae Species 0.000 claims description 8
- 239000010949 copper Substances 0.000 abstract description 34
- 229910045601 alloy Inorganic materials 0.000 description 55
- 239000000956 alloy Substances 0.000 description 55
- 239000011701 zinc Substances 0.000 description 37
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 29
- 229910052802 copper Inorganic materials 0.000 description 29
- 239000011135 tin Substances 0.000 description 29
- 239000010936 titanium Substances 0.000 description 18
- 239000010944 silver (metal) Substances 0.000 description 17
- 238000005266 casting Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 14
- 230000002349 favourable effect Effects 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000004332 silver Substances 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000006104 solid solution Substances 0.000 description 5
- 238000004512 die casting Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- YCKOAAUKSGOOJH-UHFFFAOYSA-N copper silver Chemical compound [Cu].[Ag].[Ag] YCKOAAUKSGOOJH-UHFFFAOYSA-N 0.000 description 2
- 238000005495 investment casting Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910003336 CuNi Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
- H02K17/165—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors characterised by the squirrel-cage or other short-circuited windings
-
- 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
-
- 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
- C22C9/04—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
- 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 cast copper alloys and produced therefrom by primary molding process, current-carrying structural parts.
- the invention relates to molded squirrel-cage rotors for asynchronous machines.
- the alloys CuCrZr and CuNi are proposed for the short-circuit rings, the latter being able to be supplemented by precipitation hardening by further elements such as, for example, silicon.
- the short-circuiting rings consist of a copper-silver alloy.
- DE 33 24 687 A1 discloses the proposal to manufacture the conductor bars of a copper-silver alloy.
- a copper-zinc alloy is alternatively proposed.
- EP 0 652 624 A1 describes a multi-part construction of the conductor bars. For the radially outer wedge-like part, various copper alloys are proposed whose conductivity is characterized by at least 20% IACS. The person skilled in the art can not find any indication of the castability of the alloys in the document.
- Copper materials processed by forming processes are characterized by a higher strength than copper materials in the cast state. From the above-mentioned prior art, the skilled person can therefore find no indication of which copper alloy has a favorable property combination in terms of electrical conductivity and strength even in the cast state.
- the invention is therefore based on the object, in terms of strength, conductivity and castability improved copper casting alloys and in terms Strength and conductivity to indicate improved current-carrying structural parts.
- the invention is intended to specify improved, integrally cast squirrel cage rotor for asynchronous machines.
- the selection of alloying elements should also be made with regard to health and environmental effects. In particular, lead and cadmium should be avoided.
- the invention is with respect to a copper alloy by the features of claim 1, with respect to a structural part by the features of claim 1 1 and with respect to a squirrel cage by the features of
- the invention includes copper alloys having the following composition in% by weight:
- the invention is based on the consideration that the strength of
- Metals is increased by the incorporation of foreign atoms. This effect is of particular interest for cast alloys, because in this way already high strength values can be achieved without further forming steps.
- the elements Al, Sn, Ni and Zn have a particularly great effect on the solid solution hardening in the case of copper. If the strength of pure copper is to be increased by solid-solution hardening, the addition of Al and Sn is particularly worth pursuing. It is also known that the addition of alloying elements fundamentally worsens the electrical and thermal conductivity of pure copper! In the field of solid solution formation, the conductivity of copper however, it is relatively unaffected by the elements Zn, Ag, Ni, Sn and Al.
- the electrical conductivity of copper is to be affected as little as possible, the addition of Zn and Ag is particularly worth pursuing.
- a suitable choice of at least three elements from the group consisting of the elements Ag, Ni, Zn, Sn and Al a casting material can be found which has a particularly favorable combination of strength and conductivity.
- the content of the individual elements should be at least 0.05 wt .-% and at most
- the sum of the element contents at least
- the alloying of three or more elements produces an alloy whose melting interval is greater 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 at least one of the elements Ag or Sn. This results in particularly favorable properties.
- the copper alloy particularly preferably contains the element Ag. This results in particularly favorable properties with regard to the electrical conductivity.
- the alloy may be added 0.01 to 0.2% by weight of one or more elements selected from the group consisting of Mg, Ti, Zr, B, P, As, Sb. These elements cause grain refining of the cast structure and thus increase the strength of the cast material. By deoxidizing the melt, they can also gas uptake
- alloying elements from the group consisting of the elements Ag, Ni, Zn, Sn and Al allows a sufficient variation of the parameters to find a casting material having a particularly favorable combination of strength and conductivity.
- the alloy can be made easily controllable.
- the copper alloy preferably contains the element Ag. This results in particularly favorable properties with regard to the electrical conductivity.
- the other two alloying elements should then be selected from the group consisting of the elements Ni, Zn, Sn and Al. The following combinations of alloying elements have proven to be particularly attractive:
- the proportion of Ag is preferably not more than 0.15% by weight.
- b), c) and d) may optionally be added 0.01 to 0.2 wt .-% of one or more elements from the group consisting of Mg, Ti, Zr, B, P, As, Sb exists.
- the copper alloy may preferably have the following composition in% by weight: in each case 0.06 to 0.3% of three elements from the group consisting of Ag, Ni, Zn, Sn and Al,
- the increase in strength is not always sufficient. With element contents greater than 0.3% by weight, the electrical conductivity can be reduced too much, for example below 70% 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 not more than 0.75% by weight. This results in alloys with particularly favorable property combinations in terms of strength and electrical conductivity in the cast state. For reasons of cost, the proportion of Ag is particularly preferably not more than 0.15% by weight.
- the copper alloy may particularly preferably have the following composition in% by weight:
- the increase in strength is not always sufficient.
- the electrical conductivity may 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 not more than 0.35% by weight.
- the proportions of the alloying elements can be selected such that the ratio of the weight proportions of any two alloying 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. It has been found to be favorable in terms of strength and conductivity in the cast state, when the elements selected from the group consisting of Ag, Ni, Zn, Sn and Al, for the respective alloy are alloyed in approximately equal proportions by weight.
- the copper alloy may have the following composition in% by weight:
- 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 may have the following composition in% by weight:
- Such an alloy has about 90% IACS electrical conductivity about equal to a copper alloy containing 1 wt .-% Ag (CuAgl).
- CuAgl copper alloy containing 1 wt .-% Ag
- the increase in strength over pure copper in the cast state is about 20%.
- Such an alloy has a very favorable combination of properties.
- the relative increase in strength is greater than the relative decrease in
- Copper alloy have the following composition in% by weight:
- Such an alloy has an electrical conductivity of about 85% IACS.
- the increase in strength over pure copper in the cast state is about 20%.
- the relative increase in strength is greater than the relative decrease in conductivity. Due to the low alloy content, the alloy is at the cost level of commercial copper alloys.
- Copper alloy have the following composition in% by weight:
- Copper alloy have the following composition in% by weight:
- Such an alloy has an electrical conductivity of about 80% IACS.
- the increase in strength over pure copper in the cast state is about 10%. Since this alloy contains no silver, it represents a particularly cost-effective alternative.
- a further aspect of the invention relates to current-carrying construction parts made of copper alloys, wherein the construction parts are produced by a molding process and wherein the copper alloys have the following composition in% by weight: in each case 0.05 to 0.5% of at least three elements from the group consisting of Ag, 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 insists.
- Such structural parts can, for example, switches, commutators,
- Casting processes are understood to mean casting processes such as, for example, die casting, precision casting, full casting or other processes.
- chill casting which mainly uses raw material for semi-finished products, process the cast body substantially already the shape of the desired structural part.
- further processing steps can be carried out, which slightly change the shape of the construction part. Examples of this are the separation of the sprue or the reworking of the surface of the structural part.
- the copper alloys according to the invention have a higher strength than pure copper due to the solid solution hardening in the cast state.
- the electrical conductivity is relatively little reduced compared to pure copper.
- the alloys of the invention also have a good pourability: they show only a slight tendency to gas uptake and are characterized by a good mold filling
- the alloy of the invention may contain from 0.01 to 0.2% by weight of one or more elements selected from the group consisting of Mg, Ti, Zr, B, P, As, Sb. These elements cause grain refining of the cast structure and thus increase the strength of the cast material. By deoxidizing the melt, they can also reduce gas uptake.
- the copper alloy has the following composition in% by weight: in each case 0.05 to 0.5% of at least three elements from the group consisting of Ag, Ni, Zn, Sn and Al, balance Cu and unavoidable impurities, optionally 0 , 01 to 0.2% of one or more elements of the group consisting of Mg, Ti, Zr, B, P, As, Sb.
- the invention is based on the idea of integrally casting conductor bars and shorting rings of cage rotors. Suitable casting methods for this purpose can be die casting, precision casting, full casting and other methods. Due to their high electrical conductivity, copper alloys are well suited for the manufacture of squirrel-cage rotors. Since, due to the high rotational speeds of the asynchronous machines, large forces act, in particular, on the conductor bars of the squirrel-cage rotors, the copper alloys used must already have high strength in the cast state.
- copper alloys having the following composition in% by weight are particularly suitable: 0.05 to 0.5% of at least three elements from the group consisting of Ag, Ni, Zn, Sn and Al, balance Cu and unavoidable impurities ,
- the copper alloys according to the invention have a higher strength than pure copper due to the solid solution hardening in the cast state. The electrical conductivity is relatively little reduced compared to pure copper.
- the alloys according to the invention also have a good castability: they show only a slight tendency to gas uptake and are characterized by a good mold filling capacity.
- the alloy of the invention may contain from 0.01 to 0.2% by weight of one or more elements selected from the group consisting of Mg, Ti, Zr, B, P, As, Sb.
- Sample No. 2 is a reference alloy containing 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 specific applications.
- Sample No. 3 is a copper alloy containing about 0.5% silver, 0.5% nickel and 0.5% zinc. With this alloy, a strength is achieved, which is about 35% higher than that of pure copper. The electrical conductivity is 68% IACS.
- Sample No. 4 is a copper alloy containing about 0.1% silver, 0.1% nickel and 0.1% zinc. With this alloy, a strength is achieved, which is about 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 alloying elements. The relative increase in metal costs is less than the relative increase in strength and thus can
- this alloy offers a very attractive
- Sample No. 5 is a copper alloy containing about 0.1% silver, 0.13% tin and 0.1% nickel. With this alloy, a strength is achieved, which is about 20% higher than that of pure copper.
- the electrical conductivity is 84% IACS. The relative increase in strength is thus 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 alloying elements. The relative increase in metal cost is less than the relative increase in strength.
- Sample No. 6 is a copper alloy containing about 0.1% silver, 0.1% zinc and 0.1% aluminum. With this alloy, a strength is achieved, which is about 6% higher than that of pure copper.
- the electrical conductivity is 84% IACS.
- Sample No. 7 is a copper alloy containing about 0.1% tin, 0.1% zinc and 0.1% aluminum. With this alloy, a strength is achieved, which is about 8% higher than that of pure copper. The electrical conductivity is 78% IACS. Since this alloy contains no silver, it represents a particularly cost-effective alternative.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Conductive Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013007274.3A DE102013007274B4 (en) | 2013-04-26 | 2013-04-26 | Construction part made of a cast copper alloy |
PCT/EP2014/000957 WO2014173498A1 (en) | 2013-04-26 | 2014-04-10 | Cast copper alloy for asynchronous machines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2989224A1 true EP2989224A1 (en) | 2016-03-02 |
EP2989224B1 EP2989224B1 (en) | 2020-07-22 |
Family
ID=50513879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14718324.8A Active EP2989224B1 (en) | 2013-04-26 | 2014-04-10 | Cast copper alloy for asynchronous machines |
Country Status (9)
Country | Link |
---|---|
US (1) | US9973068B2 (en) |
EP (1) | EP2989224B1 (en) |
JP (1) | JP6254679B2 (en) |
KR (1) | KR102195080B1 (en) |
CN (1) | CN105164292A (en) |
DE (1) | DE102013007274B4 (en) |
ES (1) | ES2820568T3 (en) |
RU (1) | RU2661691C2 (en) |
WO (1) | WO2014173498A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106521232B (en) * | 2016-11-22 | 2018-05-18 | 陕西斯瑞新材料股份有限公司 | It is a kind of it is high-strength, in lead Novel copper alloy Cu-Zn-Cr-RE conducting bars and preparation method |
CN107511469A (en) * | 2017-10-13 | 2017-12-26 | 安阳恒安电机有限公司 | A kind of squirrel cage motor rotor low pressure cast copper equipment, cast copper and its cast copper method |
RU2709909C1 (en) * | 2018-11-26 | 2019-12-23 | Федеральное государственное автономное образовательное учреждение высшего образования "Белгородский государственный национальный исследовательский университет" (НИУ "БелГУ") | Low-alloyed copper alloy |
US20230243018A1 (en) * | 2020-06-30 | 2023-08-03 | Mitsubishi Materials Corporation | Copper alloy, copper alloy plastic working material, component for electronic/electrical devices, terminal, bus bar, lead frame and heat dissipation substrate |
CN113234955A (en) * | 2021-04-30 | 2021-08-10 | 浙江利丰电器股份有限公司 | Silver-copper alloy material for manufacturing commutator copper sheet |
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DE503187C (en) | 1925-07-02 | 1930-07-22 | Heinrich Frei | Runner for single or multi-phase AC motors with pronounced poles and n sheet metal runners |
US2304067A (en) | 1940-07-29 | 1942-12-08 | Fairbanks Morse & Co | Production of rotors for electric machines |
GB949570A (en) * | 1960-08-03 | 1964-02-12 | Licentia Gmbh | Improvements in and relating to dynamo-electric machines |
JPS52120222A (en) * | 1976-04-01 | 1977-10-08 | Sumitomo Electric Ind Ltd | Copper alloy for heating element |
JPS5610059A (en) | 1979-07-04 | 1981-02-02 | Yaskawa Electric Mfg Co Ltd | Cage type rotor |
JPS586950A (en) | 1981-07-07 | 1983-01-14 | Furukawa Electric Co Ltd:The | Electrically conductive material for rotor |
DE3324687A1 (en) | 1983-06-14 | 1984-12-20 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Asynchronous machine with a double-cage armature winding |
JPS61147830A (en) * | 1984-12-18 | 1986-07-05 | Furukawa Electric Co Ltd:The | Copper alloy for fin of heat exchanger for automobile |
JPS6250425A (en) * | 1985-08-29 | 1987-03-05 | Furukawa Electric Co Ltd:The | Copper alloy for electronic appliance |
EP0485627B1 (en) * | 1990-05-31 | 2004-10-20 | Kabushiki Kaisha Toshiba | Lead frame and semiconductor package using it |
JP2864279B2 (en) * | 1990-06-20 | 1999-03-03 | 本田技研工業株式会社 | Combination of sliding members |
JP2692507B2 (en) | 1992-09-03 | 1997-12-17 | 日立工機株式会社 | Squirrel cage rotor manufacturing equipment |
JP3362479B2 (en) | 1993-11-05 | 2003-01-07 | 株式会社日立製作所 | Rotating electric machine rotor |
JPH1129379A (en) | 1997-02-14 | 1999-02-02 | Ngk Insulators Ltd | Composite material for semiconductor heat sink and its production |
DE10014643C2 (en) | 2000-03-24 | 2003-01-30 | Siemens Ag | Method of manufacturing a rotor cage for an asynchronous motor |
US20050134137A1 (en) * | 2003-12-17 | 2005-06-23 | Sweo Edwin A. | Method for manufacturing squirrel cage rotor |
DE202004020873U1 (en) * | 2004-03-31 | 2006-03-30 | Ziehl-Abegg Ag | Electric motor for ventilator fan has inner stator supplied with three-phase current and outer squirrel-cage rotor connected to housing with attached fan blades |
JP4660735B2 (en) * | 2004-07-01 | 2011-03-30 | Dowaメタルテック株式会社 | Method for producing copper-based alloy sheet |
JP4680765B2 (en) * | 2005-12-22 | 2011-05-11 | 株式会社神戸製鋼所 | Copper alloy with excellent stress relaxation resistance |
JP2009179864A (en) * | 2008-01-31 | 2009-08-13 | Kobe Steel Ltd | Copper alloy sheet superior in stress relaxation resistance |
RU2395151C1 (en) * | 2009-04-22 | 2010-07-20 | Андрей Витальевич Шишов | Rotor of asynchronous motor |
DE102009018951A1 (en) * | 2009-04-25 | 2010-11-04 | Ksb Aktiengesellschaft | Squirrel cage with cast shorting bars |
JP2011027280A (en) * | 2009-07-22 | 2011-02-10 | Daikin Industries Ltd | Heat transfer pipe for hot water supply |
KR101503208B1 (en) | 2010-08-27 | 2015-03-17 | 후루카와 덴키 고교 가부시키가이샤 | Copper alloy sheet and manufacturing method for same |
CN102394118A (en) * | 2011-09-13 | 2012-03-28 | 无锡市嘉邦电力管道厂 | Copper alloy cable |
-
2013
- 2013-04-26 DE DE102013007274.3A patent/DE102013007274B4/en active Active
-
2014
- 2014-04-10 WO PCT/EP2014/000957 patent/WO2014173498A1/en active Application Filing
- 2014-04-10 RU RU2015150333A patent/RU2661691C2/en active
- 2014-04-10 CN CN201480009627.1A patent/CN105164292A/en active Pending
- 2014-04-10 EP EP14718324.8A patent/EP2989224B1/en active Active
- 2014-04-10 US US14/779,161 patent/US9973068B2/en active Active
- 2014-04-10 ES ES14718324T patent/ES2820568T3/en active Active
- 2014-04-10 JP JP2016509319A patent/JP6254679B2/en active Active
- 2014-04-10 KR KR1020157023572A patent/KR102195080B1/en active IP Right Grant
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Also Published As
Publication number | Publication date |
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CN105164292A (en) | 2015-12-16 |
KR102195080B1 (en) | 2020-12-28 |
WO2014173498A1 (en) | 2014-10-30 |
KR20160002690A (en) | 2016-01-08 |
US20160056698A1 (en) | 2016-02-25 |
RU2661691C2 (en) | 2018-07-19 |
DE102013007274B4 (en) | 2020-01-16 |
ES2820568T3 (en) | 2021-04-21 |
EP2989224B1 (en) | 2020-07-22 |
JP6254679B2 (en) | 2017-12-27 |
US9973068B2 (en) | 2018-05-15 |
DE102013007274A1 (en) | 2014-10-30 |
JP2016518525A (en) | 2016-06-23 |
RU2015150333A (en) | 2017-06-02 |
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