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EP2625300B1 - Alliage de cuivre - Google Patents

Alliage de cuivre Download PDF

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Publication number
EP2625300B1
EP2625300B1 EP11817508.2A EP11817508A EP2625300B1 EP 2625300 B1 EP2625300 B1 EP 2625300B1 EP 11817508 A EP11817508 A EP 11817508A EP 2625300 B1 EP2625300 B1 EP 2625300B1
Authority
EP
European Patent Office
Prior art keywords
copper
weight
alloy
cusp
cutep
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.)
Active
Application number
EP11817508.2A
Other languages
German (de)
English (en)
Other versions
EP2625300A2 (fr
Inventor
Thomas Helmenkamp
Dirk Rode
Uwe Quadfasel
Hark Schulze
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.)
Cunova GmbH
Original Assignee
KME Germany GmbH and Co KG
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 KME Germany GmbH and Co KG filed Critical KME Germany GmbH and Co KG
Priority to PL11817508T priority Critical patent/PL2625300T3/pl
Publication of EP2625300A2 publication Critical patent/EP2625300A2/fr
Application granted granted Critical
Publication of EP2625300B1 publication Critical patent/EP2625300B1/fr
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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
    • C22C9/05—Alloys based on copper with manganese 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
    • 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
    • C22C9/01—Alloys based on copper with aluminium as the next major constituent

Definitions

  • the invention relates to a copper alloy, in particular a lead and tellur990 copper alloy, as well as semi-finished products of such a copper alloy.
  • copper Due to its natural qualities, copper is an indispensable material in many areas of industry and technology. Particularly where materials of the highest electrical and thermal conductivity are required, copper and copper alloys are of great importance. However, the use of pure copper is difficult then if parts are to be machined. The high toughness of copper, which is particularly valued in chipless shaping, proves to be a disadvantageous material property here. Essential for this is the long chip formation, which inhibits the workflow during drilling and turning and leads to heavy wear of the tool cutting. On CNC-controlled, but also on conventional automatic lathes, pure copper can normally only be processed or processed with uneconomically high expenditure of time, personnel and tools.
  • lead and bismuth act in metallic form, while sulfur and tellurium act as intermetallic phase in the form of copper sulfide (Cu 2 S) or copper telluride (Cu 2 Te).
  • Cu 2 S copper sulfide
  • Cu 2 Te copper telluride
  • the low melting points of lead and bismuth limit the hot workability, for example by extrusion, considerably, so that an economic processability on conventional production facilities is not, or only limited.
  • a sulfur-containing copper alloy is known in which the machinability, ductility, particularly by extrusion molding, while maintaining and / or increasing the high resistance to wear under stress on slip, friction and wear, is improved and which contains 0.005 to 2% sulfur.
  • the DE 30 43 833 A1 discloses a tube for transporting water and / or hot water from a copper material with 0.05 to 2.8% magnesium.
  • the alloy may additionally contain aluminum and / or proportions of silicon and between 0.005 to 1.0% by weight of calcium. This copper alloy is also designed to prevent the deterioration of water quality.
  • the invention is therefore based on the prior art, based on the object to show a copper alloy, which has at least the same or better machinability and cold and hot workability over the known copper alloys CuTeP and CuSP.
  • a solution to this problem is according to the invention in a copper alloy according to claim 1.
  • a copper alloy based on copper with additions of manganese and sulfur as well as accompanying elements which does not require lead or tellurium but has good machinability is proposed.
  • the copper alloy is made of copper containing as alloying constituents 0.10 to 0.20% by weight of manganese (Mn), 0.10 to 0.80% by weight of sulfur (S), optionally one or more elements selected from among Selected from the group consisting of 0.002 to 0.05% by weight of phosphorus (P), 0.01 to 0.5% by weight of chromium (Cr), 0.01 to 0.5% by weight of aluminum (Al ), 0.01 to 0.5% by weight of magnesium (Mg), together with unavoidable impurities.
  • Mn manganese
  • S sulfur
  • P phosphorus
  • Cr chromium
  • Al aluminum
  • Mg magnesium
  • the chip breaker in the CuSMn alloy according to the invention is a mixed phase consisting of copper sulfide (Cu 2 S) and manganese sulfide (MnS).
  • Particularly preferred is a sulfur content which is between 0.20 to 0.60 wt .-%.
  • Phosphorus serves as a deoxidizer, which binds to the dissolved in the melt free oxygen and thus prevents gas bubbles (hydrogen disease) and oxidation of alloying constituents. Furthermore, phosphorus added to improve the flow properties of the copper alloy during casting.
  • Aluminum increases hardness and mating limit without reducing toughness.
  • Aluminum is an element that improves strength, machinability, and wear resistance as well as oxidation resistance at high temperatures.
  • Chromium and magnesium are used to improve the oxidation resistance at high temperatures. Particularly good results are achieved when mixed with aluminum to achieve a synergistic effect.
  • the inventively proposed copper material CuSMn has a machinability that is equal to or better than CuSP.
  • a machinability index of 90% for CuSMn and 76 and 79% for the reference materials CuTeP and CuSP was determined.
  • the material has an electrical conductivity of between 35 to 55 MS / m, in particular in a range of 48 to 53 MS / m.
  • inventively proposed copper alloys is free of toxic alloying elements and cost, since the alloying elements are available at low cost. It should also be emphasized that the scraps are reusable.
  • a particular criterion of the proposed copper alloy is that a processability with conventional manufacturing and processing machines is possible, in particular, the alloy has both a sufficient cold workability and a very good hot workability.
  • Semifinished products in the form of rolled products, pressed / drawn products, forged products or cast products can therefore be made available from the copper alloys proposed according to the invention.
  • each CuSMn and the reference materials CuTeP and CuSP were melted and cast in a continuous casting process to extrusion billets.
  • the composition of the materials is shown in Table 1.
  • the composition of CuMnS complies with claims 1, 2 and 3.
  • the composition of the reference materials meets the requirements of the EN and ASTM standards for the materials CuTeP and CuSP.
  • the continuously cast round bolts were extruded without problems to press bars in an extrusion process with a heating temperature ⁇ 850 ° C and then drawn with a cross-sectional decrease of 10 to 15% to the final dimension of ⁇ 35 mm.
  • the most commonly used state of supply for machinable copper is R250 according to EN 12164 or H02 according to ASTM B301.
  • Table 2 shows the mechanical-technological characteristics, Brinell hardness and spec. electrical conductivity of the thus finished drawn rods reproduced.
  • the new materials according to the invention with the standard materials CuTeP or CuSP have comparable mechanical characteristics and an equally good electrical conductivity. Due to the even better strength / elongation at break compared to the standard material CuSP, the material CuSMn offers the advantage of a better cold formability (for example for the production of "hammered" burner nozzles).
  • Comparative machinability tests in the form of drilling tests were performed on the bars listed in Table 2.
  • the machining by drilling was preferred to machining by turning or threading, because the production of small holes (eg in burner nozzles) is the most difficult machining shape. Shows a material here positive Results, the machining by turning or threading is also no problem.
  • the alloying elements aluminum (Al), calcium (Ca), cobalt (Co), chromium (Cr), iron (Fe), magnesium (Mg), manganese (Mn), molybdenum (Mo), nickel (Ni) were investigated in each case.
  • the proven materials CuSP and CuTeP served as comparison samples for the machinability tests. Qualitatively, the chip shape was measured when drilling 3 mm holes and the occurrence of drill breaks.
  • the desired material properties or property combinations were achieved by the addition of manganese, to a proportion of 0.10 to 0.20 wt .-% and sulfur in a proportion of 0.10 to 0.80 wt .-%, in particular 0.20 to 0.60 wt .-%.
  • the copper material CuSMn shown has the abovementioned independent chip-breaking phases, namely the mixed phase consisting of Cu 2 S and MnS.
  • the copper alloy CuSMn has a CuTeP-comparable or even slightly better hot and cold formability with the copper alloy CuSP or the copper alloy.
  • Table 1 ⁇ / u> Composition of the material according to the invention CuSMn and the reference materials CuTeP and CuSP material Composition in% by weight Cu Te S Mn Ca P unavoidable admixtures CuSMn 99.50 / 0.30 0.18 / 0,007 0.01 CuTeP 99.53 0.44 / / / 0,007 0.02

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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)
  • Forging (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (9)

  1. Alliage à base de cuivre, constitué de :
    0,10 à 0,20 % en poids de manganèse (Mn),
    0,10 à 0,80 % en poids de soufre (S),
    en option d'un ou de plusieurs éléments, qui sont choisis parmi le groupe qui est constitué de
    0,002 à 0,05 % en poids de phosphore (P),
    0,01 à 0,5 % en poids de chrome (Cr),
    0,01 à 0,5 % en poids d'aluminium (Al),
    0,01 à 0,5 % en poids de magnésium (Mg),
    ainsi que du reste de cuivre (Cu) et d'impuretés inévitables.
  2. Alliage à base de cuivre selon la revendication 1, dans lequel la proportion en soufre est comprise entre 0,20 et 0,60 % en poids.
  3. Alliage à base de cuivre selon la revendication 1 ou 2, dans lequel la conductivité électrique va de 35 à 55 MS/m.
  4. Alliage à base de cuivre selon la revendication 3, dans lequel la conductivité électrique va de 48 à 53 MS/m.
  5. Alliage à base de cuivre selon l'une quelconque des revendications 1 à 4, dans lequel l'indice d'usinabilité se situe entre 80 % et 95 %.
  6. Produit semi-fini constitué d'un alliage selon l'une quelconque des revendications 1 à 5 se présentant sous la forme d'un produit laminé.
  7. Produit semi-fini constitué d'un alliage selon l'une quelconque des revendications 1 à 5 se présentant sous la forme d'un produit extrudé/étiré.
  8. Produit semi-fini constitué d'un alliage selon l'une quelconque des revendications 1 à 5 se présentant sous la forme d'un produit forgé.
  9. Produit semi-fini constitué d'un alliage selon l'une quelconque des revendications 1 à 5 se présentant sous la forme d'un produit coulé.
EP11817508.2A 2010-10-08 2011-08-16 Alliage de cuivre Active EP2625300B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11817508T PL2625300T3 (pl) 2010-10-08 2011-08-16 Stop miedzi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010038060 DE102010038060A1 (de) 2010-10-08 2010-10-08 Kupferlegierung
PCT/DE2011/001598 WO2012062248A2 (fr) 2010-10-08 2011-08-16 Alliage de cuivre

Publications (2)

Publication Number Publication Date
EP2625300A2 EP2625300A2 (fr) 2013-08-14
EP2625300B1 true EP2625300B1 (fr) 2016-12-21

Family

ID=45606890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11817508.2A Active EP2625300B1 (fr) 2010-10-08 2011-08-16 Alliage de cuivre

Country Status (8)

Country Link
US (1) US20130183194A1 (fr)
EP (1) EP2625300B1 (fr)
JP (1) JP2013544962A (fr)
BR (1) BR112013008521A2 (fr)
DE (1) DE102010038060A1 (fr)
MX (1) MX2012011929A (fr)
PL (1) PL2625300T3 (fr)
WO (1) WO2012062248A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023116142A1 (de) * 2023-06-20 2024-12-24 Sundwiger Messingwerk GmbH Neusilberlegierung
DE102023116139A1 (de) * 2023-06-20 2024-12-24 Sundwiger Messingwerk GmbH Bleifreie Messinglegierung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE1450094A1 (sv) 2014-01-30 2015-07-31 Arsenikfri mässing med förbättrad avzinkningshärdighet och skärbarhet
CN115786753B (zh) * 2023-02-02 2023-05-30 泰州泰锦合金材料有限公司 一种含稀土金属的碲铜合金材料及其制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1959509A (en) 1930-06-14 1934-05-22 Lucius Pitkin Inc Copper base alloy
US2027807A (en) 1932-05-13 1936-01-14 Chase Companies Inc Copper base alloy
DE1558707A1 (de) * 1967-09-12 1970-04-23 Ver Deutsche Metallwerke Ag Aus dem Schmelzfluss oder durch Sintern hergestellte Kupferlegierungen mit 0,005 bis 2% Schwefel
JPS5344136B2 (fr) * 1974-12-23 1978-11-27
JPS5675541A (en) * 1979-11-22 1981-06-22 Sumitomo Light Metal Ind Ltd Copper alloy for water or hot water supply piping material and heat exchanger tube material
JPS5760043A (en) * 1980-09-30 1982-04-10 Furukawa Electric Co Ltd:The Electrically conductive copper alloy with corrosion and heat resistance
JPS5852453A (ja) * 1981-09-21 1983-03-28 Furukawa Electric Co Ltd:The 自動車用ラジエ−タ−のフイン用銅合金
JPH06184672A (ja) * 1992-12-18 1994-07-05 Mitsubishi Materials Corp 給水給湯用耐孔食性銅合金配管
US20040115089A1 (en) * 1999-07-02 2004-06-17 Berkenhoff Gmbh. Weld-solder filler
JP2005171311A (ja) * 2003-12-11 2005-06-30 Nissan Motor Co Ltd 熱間鍛造用非調質クランクシャフト鋼

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023116142A1 (de) * 2023-06-20 2024-12-24 Sundwiger Messingwerk GmbH Neusilberlegierung
DE102023116139A1 (de) * 2023-06-20 2024-12-24 Sundwiger Messingwerk GmbH Bleifreie Messinglegierung
EP4481077A1 (fr) 2023-06-20 2024-12-25 Sundwiger Messingwerk GmbH Alliage de laiton sans plomb
EP4481076A1 (fr) 2023-06-20 2024-12-25 Sundwiger Messingwerk GmbH Alliage de reargent

Also Published As

Publication number Publication date
BR112013008521A2 (pt) 2016-07-12
PL2625300T3 (pl) 2017-04-28
WO2012062248A3 (fr) 2013-07-25
EP2625300A2 (fr) 2013-08-14
MX2012011929A (es) 2013-02-07
JP2013544962A (ja) 2013-12-19
DE102010038060A1 (de) 2012-04-12
US20130183194A1 (en) 2013-07-18
WO2012062248A8 (fr) 2012-11-29
WO2012062248A2 (fr) 2012-05-18

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