EP0040649A1 - Alliage à base de plomb et de cuivre - Google Patents

Alliage à base de plomb et de cuivre Download PDF

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Publication number
EP0040649A1
EP0040649A1 EP80200481A EP80200481A EP0040649A1 EP 0040649 A1 EP0040649 A1 EP 0040649A1 EP 80200481 A EP80200481 A EP 80200481A EP 80200481 A EP80200481 A EP 80200481A EP 0040649 A1 EP0040649 A1 EP 0040649A1
Authority
EP
European Patent Office
Prior art keywords
lead
copper alloy
selenium
der
die
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Withdrawn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
EP80200481A
Other languages
German (de)
English (en)
Inventor
Max Reinert
Ulrich Dr. Dipl.-Ing. Heubner
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Priority to EP80200481A priority Critical patent/EP0040649A1/fr
Publication of EP0040649A1 publication Critical patent/EP0040649A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C11/00—Alloys based on lead
    • C22C11/04—Alloys based on lead with copper as the next major constituent

Definitions

  • the invention relates to a lead-copper alloy containing 0.03 to 0.08% by mass of copper for the production of metal sheets and strips for the building industry and for the production of cable sheaths.
  • the lead-copper alloy according to DIN 17640 has proven to be very advantageous due to its resistance to thermal cycling. Examples of applications are roof and groove coverings, facade cladding, seals and insulation. In house technology, pressure pipes, drain pipes and drain bends made of lead have proven themselves for a long time due to their durability, easy installation options and the noise reduction of flowing water.
  • Lead offers a further advantage due to its good damping properties against sound, especially as sound insulation in building and mechanical engineering.
  • This lead material is also used for sheathing telephone and power cables.
  • the most important requirement with regard to the high durability of this lead material is a wide range of its plastic deformability.
  • a yardstick for this is the elongation at break during the tensile test, on the other hand the number of bends of the material, the thermal alternating stress and the creep rupture strength at room temperature.
  • an improved fatigue strength is required compared to soft lead.
  • sufficient recrystallization resistance - i.e. Lack of coarse grain as a result of deformation at elevated temperature - desirable.
  • the lead-copper alloy with 0.03 to 0.08 mass% copper still contains 0.005 to 0.05 mass%, preferably 0.01 to 0.025 mass%, selenium contains.
  • selenium contains 0.005 to 0.05 mass%, preferably 0.01 to 0.025 mass%.
  • the addition of selenium achieves a grain-refining effect in that the smallest lead selenide particles act as crystallizers for the lead. These solidify primarily from the melt during solidification.
  • the selenium grain refinement goes hand in hand with a finer copper distribution.
  • the lead-copper alloy can also contain production-related impurities.
  • the finer copper distribution associated with selenium grain refinement therefore has very advantageous consequences for the mechanical-technological properties.
  • the hardness HV 1/180 was increased from 3.2 to 3.8, likewise the yield strength and tensile strength, while the elongation at break remains high on average. This is then expressed in the number of back and forth bends that increase with increasing selenium content until breaking, but above all in the strong increase in service life that is important for the construction industry when subjected to changes in temperature.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
EP80200481A 1980-05-22 1980-05-22 Alliage à base de plomb et de cuivre Withdrawn EP0040649A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP80200481A EP0040649A1 (fr) 1980-05-22 1980-05-22 Alliage à base de plomb et de cuivre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80200481A EP0040649A1 (fr) 1980-05-22 1980-05-22 Alliage à base de plomb et de cuivre

Publications (1)

Publication Number Publication Date
EP0040649A1 true EP0040649A1 (fr) 1981-12-02

Family

ID=8187002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200481A Withdrawn EP0040649A1 (fr) 1980-05-22 1980-05-22 Alliage à base de plomb et de cuivre

Country Status (1)

Country Link
EP (1) EP0040649A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169616A (en) * 1985-01-11 1986-07-16 London Scandinavian Metall Grain refining metals
CN110129615A (zh) * 2019-04-18 2019-08-16 河南豫光金铅股份有限公司 一种电缆护套用Pb-Cu合金及其冶炼方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Zeitschrift fur Metallkunde, Band 70 Nr. 12, 1979 Stuttgart U. HEUBNER "Die Kornfeining und Gefugestabilisierung von Blei und Bleilegierungen mit Hilfe von Schwefel, Selen und Tellur" seiten 761 bis 767 * seiten 764, 765 766 * *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169616A (en) * 1985-01-11 1986-07-16 London Scandinavian Metall Grain refining metals
CN110129615A (zh) * 2019-04-18 2019-08-16 河南豫光金铅股份有限公司 一种电缆护套用Pb-Cu合金及其冶炼方法

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR NL

17P Request for examination filed

Effective date: 19820514

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19830525

RIN1 Information on inventor provided before grant (corrected)

Inventor name: REINERT, MAX

Inventor name: HEUBNER, ULRICH, DR. DIPL.-ING.