EP1649950A2 - Verfahren zur Herstellung von Kupferlegierungen - Google Patents

Verfahren zur Herstellung von Kupferlegierungen Download PDF

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Publication number
EP1649950A2
EP1649950A2 EP05022523A EP05022523A EP1649950A2 EP 1649950 A2 EP1649950 A2 EP 1649950A2 EP 05022523 A EP05022523 A EP 05022523A EP 05022523 A EP05022523 A EP 05022523A EP 1649950 A2 EP1649950 A2 EP 1649950A2
Authority
EP
European Patent Office
Prior art keywords
copper
cast
zirconium
chromium
melt
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.)
Withdrawn
Application number
EP05022523A
Other languages
English (en)
French (fr)
Other versions
EP1649950A3 (de
Inventor
Russell Nippert
Brian Swank
Ilpo Koppinen
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.)
Luvata Oy
Original Assignee
Luvata Oy
Outokumpu Copper Products Oy
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 Luvata Oy, Outokumpu Copper Products Oy filed Critical Luvata Oy
Publication of EP1649950A2 publication Critical patent/EP1649950A2/de
Publication of EP1649950A3 publication Critical patent/EP1649950A3/de
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/004—Copper alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/006—Continuous casting of metals, i.e. casting in indefinite lengths of tubes
    • 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

Definitions

  • the invention relates to a method for manufacturing copper alloys, particularly copper based precipitation hardenable alloys, in which method hot extrusion of the copper alloy is avoided.
  • Manufacturing of precipitation hardening alloys requires a process stage for putting the alloying elements into a solid solution. Usually that is done by having a separate solution annealing heat treatment or by combining hot working, such as hot extrusion or hot rolling with rapid quenching. According to this developed technology the solid solution is achieved by controlling the solidification and subsequent cooling.
  • the conventional method for manufacturing a rod of copper based precipitation hardenable alloys such as copper-chromium (CuCr), copper-chromium-zirconium (CuCrZr) and copper-zirconium (CuZr), is to cast a billet and then to treat the billet by hot extrusion.
  • This kind of a treatment is described in the US patent 4,421,570 for the material to be used in a method for making molds for continuous casting.
  • Typical conventionally cast billets have surface defects that have to be corrected before extrusion by machining or by another overhauling method. Further, depending on the billet casting conditions the copper alloying elements, chromium and/or zirconium, may start to precipitate out of the solution.
  • the rod After extrusion the rod is drawn to a given size, aged and further drawn to a final diameter, if necessary. In some cases the rod may be drawn to a given size and then formed into components prior to being aged.
  • the object of the present invention is to eliminate some drawbacks of the prior art and to achieve an improved method for manufacturing copper based precipitation hardenable alloys, such as copper-chromium (CuCr), copper-chromium-zirconium (CuCrZr) and copper-zirconium (CuZr), by using a continuous casting for an elongated casting, such as a rod, instead of a cast billet and thus to shorten the manufacturing process.
  • CuCr copper-chromium
  • CuCrZr copper-chromium-zirconium
  • CuZr copper-zirconium
  • a copper based precipitation hardenable alloy such as copper-chromium (CuCr), copper-chromium-zirconium (CuCrZr) and copper-zirconium (CuZr) is cast by continuous casting directly into an elongated casting having advantageously an essentially circular, rectangular or ring-like cross-section, preferably a rod having advantageously an external diameter between 8 mm and 50 mm.
  • the casting is then drawn to a predetermined size.
  • This drawn product is further aged in some alternative manner for the final product.
  • These embodiments for aging are for instance solution annealing, forming directly into components or drawn further into a fine wire followed by an aging thermal treatment.
  • the copper based precipitation hardenable alloys to be manufactured in the method of the invention contain 0,1 to 1,5 % in weight chromium and/or 0,01 to 0,25 % in weight zirconium, the remainder being copper and the usual impurities.
  • the continuous casting in the method of the invention is carried out horizontally, vertically upwards or vertically downward or even in some direction between the horizontal and the vertical direction.
  • continuous casting is used for describing continuously-operated casting of at least one elongated piece having advantageously essentially circular, rectangular or ring-like cross-section with a thickness or an external diameter maximum for further cold working of the material. Other sizes, or even other shapes, may also be cast depending on the final size requirements.
  • continuous casting in the method of the invention very long lengths of the castings up to 5 ton in weight are produced when comparing with the cast billet in the prior art ready for extrusion having a typical weight of 160 kg.
  • the alloying elements are kept during the continuous casting stage in a supersaturated solid solution.
  • This solution is accomplished by casting the copper alloy through a die having a connection with a cooler that enables fast solidification of 23 °C/s to 70 °C/s for the copper alloy. This solidification further allows for a reduction in temperature below the temperature necessary for precipitation of the copper based alloy.
  • the casting of the copper based alloy is drawn to a predetermined size.
  • the further treatment of the drawn product to the final product in accordance with the invention can be carried out by alternative ways: One embodiment is to make for the drawn product a solution annealing, another embodiment is to form the drawn product directly into components, for instance cold heading resistance welding electrodes as the final product or a still another embodiment is to age at the temperature 440 to 470 °C for 2 to 3 hours and to draw further down into the final product, such as a fine wire. If necessary, all the embodiments are followed by an ageing thermal treatment.
  • the solution annealing in accordance with one embodiment of the invention is carried out in the temperature range of 980 - 1000 °C for 5 - 30 minutes in the case of the copper chromium alloy and in the temperature range of 900 - 925 °C for 10 - 30 minutes in the case of the copper zirconium alloy in order to recrystallize the predetermined size drawn product.
  • the annealed product is formed directly into components as the final product or the annealed product is further drawn into a new desired dimension. This product having the new desired dimension is further formed into components as the final product or the product having the new desired dimension is aged before forming into components as the final product.
  • a melting furnace 1 copper chromium alloy is melted in a melting furnace 1 and the melt is flowed to a holding furnace 2.
  • the melt is directed to a continuous casting machine 3, which is operated so that the cast direction is essentially vertically upwards so that the holding furnace 2 is under the continuous casting machine 3 and the melt is sucked upwards into a nozzle of the continuous casting machine 3.
  • the melt is solidified with cooling media circulating the melt to be solidified and to create a solid casting 4.
  • the casting 4 from the continuous casting machine 3 is in a shape of a rod.
  • the rod is further fed into a drawing machine 5 where the rod is drawn to the desired dimensions of a final product 6, which is for instance a wire. If necessary, depending on the use of the final product 6, an aging 7 at the temperature of 440 - 470 °C for 2 to 3 hours is carried out.
  • Fig. 2 copper zirconium alloy is melted in a melting furnace 11 and the melt is flowed to a holding furnace 12. From the holding furnace 12 the melt is directed to a continuous casting machine 13, which is operated so that the cast direction is essentially vertically downward so that the holding furnace 12 is above the continuous casting machine 13 and the melt is fed downward into a die of the continuous casting machine 13. In the continuous casting machine 13 the melt is solidified with cooling media circulating the melt to be solidified inside the casting machine and to create a solid casting 14.
  • the casting 14 from the continuous casting machine 13 is in a shape of a rod.
  • the rod is further fed into a drawing machine 15 where the cast rod is drawn to the dimensions desired for further processing.
  • the drawn rod 16 from the drawn machine 15 is further fed into a solution annealing treatment in a furnace 17.
  • the annealed rod 18 from the furnace 17 is alternatively for instance cut into desired objects 19 as final products of the method of the invention, which objects 19 are aged 24, if necessary.
  • Another alternative to treat the annealed rod 18 is to draw the rod 18 in another drawing machine 23 into a desired final dimension of the method of the invention.
  • the drawn product 20 is further alternatively for instance cut into desired objects 21, which are aged 26, if necessary.
  • the drawn product 20 will be aged 25 before forming 22 the desired objects or keeping the product 21 for instance in the form of a wire.
  • copper chromium zirconium alloy is melted in a melting furnace 31 and the melt is flowed to a holding furnace 32.
  • the melt is directed to a continuous casting machine 33, which is operated so that the cast direction is essentially horizontal so that the holding furnace 32 is essentially on the same level as the continuous casting machine 33 and the melt is fed into a die of the continuous casting machine 33.
  • the melt is solidified with cooling media circulating the melt to be solidified inside the casting machine and to create a solid casting 34.
  • the casting 34 from the continuous casting machine 33 is in a shape of a rod.
  • the rod 34 is further fed into a drawing machine 35 where the cast rod is drawn to the dimensions desired for further processing.
  • the drawn product 34 is aged 40 at temperature 440 - 470 °C for 2 to 3 hours and the aged product 36 is formed for desired components 42 or kept in a form of for instance a wire depending on the purpose of further processing.
  • the aged product 36 is further fed into another drawing machine 37 to draw the product to a final dimension.
  • the drawn product 38 from the drawing machine 37 is further cut into components or kept as a form of a wire.
  • the final product 39 in the form of for instance cut components or a wire made of the drawn product 38 is again aged 41, if necessary depending on the use of the final product 39.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Continuous Casting (AREA)
  • Metal Extraction Processes (AREA)
EP05022523A 2004-10-22 2005-10-14 Verfahren zur Herstellung von Kupferlegierungen Withdrawn EP1649950A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/971,932 US20060086437A1 (en) 2004-10-22 2004-10-22 Method for manufacturing copper alloys

Publications (2)

Publication Number Publication Date
EP1649950A2 true EP1649950A2 (de) 2006-04-26
EP1649950A3 EP1649950A3 (de) 2008-02-27

Family

ID=35788614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05022523A Withdrawn EP1649950A3 (de) 2004-10-22 2005-10-14 Verfahren zur Herstellung von Kupferlegierungen

Country Status (4)

Country Link
US (1) US20060086437A1 (de)
EP (1) EP1649950A3 (de)
JP (1) JP2006138015A (de)
CN (1) CN1804072A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001848A1 (en) 2012-06-29 2014-01-03 Le Bronze Industriel Crucible for a machine for continuously casting a bar or a coil of a metal alloy
WO2016034484A1 (de) * 2014-09-03 2016-03-10 Federal-Mogul Wiesbaden Gmbh Gleitlager oder teil davon, verfahren zur herstellung desselben und verwendung einer cucrzr-legierung als gleitlagerwerkstoff
US12115576B2 (en) 2020-03-19 2024-10-15 Upcast Oy Process of producing a non-ferrous metallic tube

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4721067B2 (ja) * 2007-07-12 2011-07-13 日立電線株式会社 電気・電子部品用銅合金材の製造方法
RU2378403C2 (ru) * 2007-12-10 2010-01-10 Сергей Алексеевич Костин Способ получения слитка из дисперсионно-твердеющего низколегированного сплава на медной основе и способ производства из него металлопродукции
TWI520799B (zh) 2010-01-26 2016-02-11 三菱綜合材料股份有限公司 含反應性元素的銅合金線材之製造方法
WO2013047276A1 (ja) 2011-09-29 2013-04-04 日本碍子株式会社 銅合金線材およびその製造方法
CN102994675A (zh) * 2012-12-11 2013-03-27 包钢集团设计研究院（有限公司） 铬锆银铜贯流式风口
CN103409651B (zh) * 2013-07-18 2015-04-29 中国船舶重工集团公司第七二五研究所 真空熔炼中消除铜铬锆合金棒表面产生冷豆或气孔的方法
JP6030186B1 (ja) 2015-05-13 2016-11-24 株式会社ダイヘン 銅合金粉末、積層造形物の製造方法および積層造形物
CN105088001B (zh) * 2015-09-02 2017-05-10 河南科技大学 一种高强高导接触线用铜合金及其制备方法
WO2018079304A1 (ja) 2016-10-25 2018-05-03 株式会社ダイヘン 銅合金粉末、積層造形物の製造方法および積層造形物
CN107737890B (zh) * 2017-09-20 2019-04-16 中天合金技术有限公司 一种射频同轴电缆用无氧铜管的制备方法
CN109175283B (zh) * 2018-10-29 2020-05-01 福建紫金铜业有限公司 一种热管素材管加工工艺
CN111363948B (zh) * 2020-04-24 2021-11-09 浙江大学 一种高强高导铜合金的高效短流程制备方法
CN114713650A (zh) * 2022-03-31 2022-07-08 江阴电工合金股份有限公司 高延展性高抗软化铜铬锆接触线的生产工艺及装置
CN120843885B (zh) * 2025-09-24 2026-01-23 江西理工大学 一种高强度高导电铜锆合金的铸造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6749699B2 (en) * 2000-08-09 2004-06-15 Olin Corporation Silver containing copper alloy
DE10206597A1 (de) * 2002-02-15 2003-08-28 Km Europa Metal Ag Aushärtbare Kupferlegierung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001848A1 (en) 2012-06-29 2014-01-03 Le Bronze Industriel Crucible for a machine for continuously casting a bar or a coil of a metal alloy
WO2016034484A1 (de) * 2014-09-03 2016-03-10 Federal-Mogul Wiesbaden Gmbh Gleitlager oder teil davon, verfahren zur herstellung desselben und verwendung einer cucrzr-legierung als gleitlagerwerkstoff
US12115576B2 (en) 2020-03-19 2024-10-15 Upcast Oy Process of producing a non-ferrous metallic tube

Also Published As

Publication number Publication date
EP1649950A3 (de) 2008-02-27
CN1804072A (zh) 2006-07-19
JP2006138015A (ja) 2006-06-01
US20060086437A1 (en) 2006-04-27

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