EP2625300A2 - Alliage de cuivre - Google Patents

Alliage de cuivre

Info

Publication number
EP2625300A2
EP2625300A2 EP11817508.2A EP11817508A EP2625300A2 EP 2625300 A2 EP2625300 A2 EP 2625300A2 EP 11817508 A EP11817508 A EP 11817508A EP 2625300 A2 EP2625300 A2 EP 2625300A2
Authority
EP
European Patent Office
Prior art keywords
copper
weight
alloy according
based alloy
sulfur
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
Application number
EP11817508.2A
Other languages
German (de)
English (en)
Other versions
EP2625300B1 (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.)
KME Special Products GmbH and Co KG
Original Assignee
KME Germany GmbH
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 filed Critical KME Germany GmbH
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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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 e).
  • copper sulfide ⁇ CU 2 S copper sulfide
  • Cu 2 e copper telluride
  • the low melting points of lead and bismuth limit hot workability, e.g. B. by extrusion, considerably, so that an economic processability on conventional manufacturing facilities not, or is given only limited.
  • 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 first 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 components, 0.05 to 0.80 wt.% Manganese (Mn), 0.10 to 0.80 wt.% Sulfur (S), optionally one or more elements derived from 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 S
  • 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 suicide (Cu 2 S) and manganese sulfide (MnS).
  • the manganese content is particularly preferably 0.10 to 0.20% by weight. Also preferred is a sulfur content which is between 0.20 to 0.60 wt .-%.
  • a copper-based alloy according to claim 4. It consists of 0.30 to 1.50% by weight of calcium (Ca), optionally one or more elements selected from the group consisting of 0.005 to 0.05% by weight of manganese (Mn), 0.005 to 0.05% by weight of sulfur (S), 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 (AI), 0.01 to 0.5% by weight of magnesium (Mg) and the remainder copper (Cu) and unavoidable impurities.
  • Ca calcium
  • Mn manganese
  • S sulfur
  • P 0.002 to 0.05% by weight of phosphorus
  • Cr chromium
  • AI 0.01 to 0.5% by weight of aluminum
  • Mg magnesium
  • Cu copper
  • the calcium content in the aforementioned copper alloy is between 0.5 to 1, 0 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 is added to improve the flow properties of the copper alloy during casting. Manganese refines the grain and improves its machinability in combination with sulfur.
  • 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 two copper materials CuSMn and CuCa have a machinability that is equal to or better than CuSP.
  • a machinability index of 90% for CuSMn, 86% for CuCa and 76 and 79% for the reference materials CuTeP and CuSP was determined.
  • the materials have 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 are 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 two proposed copper alloys is that a processability with conventional manufacturing and processing machines is possible, in particular, the alloys have both a sufficient cold workability and a very good hot workability.
  • CuSMn, CuCa and the reference materials CuTeP and CuSP were melted in a crucible induction furnace and cast into billets in the continuous casting process.
  • the composition of the materials is shown in Table 1.
  • the composition of CuSMn complies with claims 1, 2 and 3
  • CuCa complies with claims 4 and 5.
  • the composition of the reference materials meets the requirements of the EN and ASTM standards for the materials CuTeP and CuSP.
  • the extruded round bolts were extruded without problems to press rods in an extrusion process with a heating temperature> 850 ° C and then pulled with a cross-sectional decrease of 10 to 15% to the final dimension of ⁇ j> 35 mm.
  • Comparative machinability tests were performed in the form of drilling tests on the bars listed in Table 2. Preference has been given to machining by drilling, because the production of small holes (e.g., in burner nozzles) is the most difficult machining shape. If a material shows positive results here, turning or tapping is no problem either.
  • Drilling tool 2 mm ⁇ solid carbide drill with internal cooling
  • Drilling strategy Introduce 45 holes into rod sections at the front:
  • the individual ratings have been added, with a maximum of 80 points are achievable.
  • This overall assessment of machinability should be defined here as a machinability index, with 80 points corresponding to a maximum achievable machinability index of 100%.
  • the new materials CuCa and CuSMn according to the invention achieve the following machinability indices in comparison to the reference materials:
  • the alloying elements aluminum (AI), 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 0.05 to 0.80 wt .-%, preferably 0.10 to 0.30 wt .-%, in particular 0.10 to 0.20% by weight and sulfur in a proportion of 0.10 to 0.80% by weight, in particular 0.20 to 0.60% by weight.
  • the desired material properties are achieved with a copper-based alloy containing calcium as the alloying constituent in a proportion of 0.30 to 1.50% by weight, preferably between 0.5 and 1.0% by weight. contains%.
  • the two copper materials CuSMn and CuCa shown have the aforementioned independent chip-breaking phases, namely the mixed phase comprising Cu 2 S and MnS or the electropatic phase CusCa.
  • 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.
  • composition of the materials according to the invention CuSMn, CuCa and the reference materials CuTeP and CuSP

Landscapes

  • 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)

Abstract

L'invention concerne des alliages à base de cuivre contenant des additifs manganèse et soufre et/ou calcium ainsi que des sous-produits. Les alliages de cuivre sont exempts de tellure et de plomb et se caractérisent par une grande conductivité électrique et une bonne usinabilité.
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 true EP2625300A2 (fr) 2013-08-14
EP2625300B1 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)

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
See references of WO2012062248A2 *

Also Published As

Publication number Publication date
MX2012011929A (es) 2013-02-07
BR112013008521A2 (pt) 2016-07-12
PL2625300T3 (pl) 2017-04-28
EP2625300B1 (fr) 2016-12-21
WO2012062248A2 (fr) 2012-05-18
US20130183194A1 (en) 2013-07-18
JP2013544962A (ja) 2013-12-19
WO2012062248A3 (fr) 2013-07-25
DE102010038060A1 (de) 2012-04-12
WO2012062248A8 (fr) 2012-11-29

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