EP4124667A1 - Alliage de laiton sans plomb et antimoine - Google Patents

Alliage de laiton sans plomb et antimoine Download PDF

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Publication number
EP4124667A1
EP4124667A1 EP22184790.8A EP22184790A EP4124667A1 EP 4124667 A1 EP4124667 A1 EP 4124667A1 EP 22184790 A EP22184790 A EP 22184790A EP 4124667 A1 EP4124667 A1 EP 4124667A1
Authority
EP
European Patent Office
Prior art keywords
lead
alloy
antimony
brass alloy
free brass
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.)
Pending
Application number
EP22184790.8A
Other languages
German (de)
English (en)
Inventor
Florian Seuss
Patrick Feldner
Hartmut Ricken
Alexander Dehnelt
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.)
Diehl Brass Solutions Stiftung and Co KG
Original Assignee
Diehl Brass Solutions Stiftung 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 Diehl Brass Solutions Stiftung and Co KG filed Critical Diehl Brass Solutions Stiftung and Co KG
Publication of EP4124667A1 publication Critical patent/EP4124667A1/fr
Pending 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
    • 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
    • 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

Definitions

  • the invention relates to a lead and antimony-free brass alloy.
  • Pb was added in an amount of up to 4% by weight to improve the machinability of brass alloys.
  • the addition of Pb is no longer permitted due to legal requirements.
  • the EP 3 320 122 B1 discloses a brass alloy to which neither Pb nor Bi is added. To improve machinability, it is proposed to add 0.005 to 1.0% by weight of In to the brass alloy. Although the proposed addition of In improves machinability, relatively long spiral chips are formed during machining, which can lead to blockages during removal and to tool breakage.
  • the EP 2 913 415 A1 discloses another lead and bismuth-free brass alloy which, moreover, contains no Si.
  • the known alloy contains 60 to 65% by weight Cu and 0.01 to 0.15% by weight Sb.
  • the EP 2 467 507 B1 discloses a lead-free brass alloy containing Fe, Ni and Sn.
  • the object of the invention is to eliminate the disadvantages of the prior art.
  • a lead-free and antimony-free brass alloy with improved machinability should be specified.
  • the brass alloy should have low hot embrittlement, so that it can be processed by hot forming.
  • [%] means percent by weight.
  • the addition of 0.1 to 1.5% Mg proposed according to the invention can set the Pb content to less than 0.1% without the formation of undesirably long spiral chips during machining.
  • the proposed brass alloy is characterized not only by improved chip breaking, but also by low hot embrittlement. It can be processed by hot forming.
  • a "brass alloy free of lead and antimony” is understood to mean an alloy which contains less than 0.1% Pb and less than 0.001% Sb.
  • the alloy can contain less than 0.15% As and/or less than 0.15% P and/or less than 0.1% Al and/or less than 0.1% Sn.
  • Sn stabilizes the ⁇ solid solution.
  • As leads to improved corrosion resistance of the alloy, in particular As counteracts dezincification.
  • Addition of P improves the machinability of the alloy.
  • it contains 57 to less than 60%, preferably 57.5 to 58.5% Cu.
  • the proposed alloy is less expensive because of the relatively lower Cu contents.
  • Mg more than 0.5% Mg is contained.
  • the proposed Mg content contributes to improved machinability.
  • the content of Pb is suitably in the range of 0.05 to 0.09%.
  • the content of In is less than 0.005%.
  • the Zn content is 40 to 42.5%.
  • An alloy with the proposed Zn content shows good machinability.
  • the proposed lead and antimony-free brass alloy also enables good processability in the continuous casting process.
  • the chip images according to Figures 1 to 4 were each produced by turning alloys at a rotating speed of 850 rpm.
  • An indexable insert with the identifier KNMX160405-R81C907 was used.
  • the in the Figures 1 to 4 The displayed scale is 5 mm in each case.
  • the first example alloy is a reference alloy.
  • the first example alloy contains 58% Cu and 42% Zn, ie the first example alloy contains no addition of Mg.
  • example alloy 1 when example alloy 1 is longitudinally turned, long spiral chips are formed. Such spiral chips are undesirable when machining. They can lead to blockages during transport and tool breakage.
  • the second example alloy contains 58% Cu, 41.5% Zn and 0.5% Mg. It can be seen that the chips produced during longitudinal turning are shorter than those in 1 shown chips.
  • FIG 3 shows a chip image after longitudinal turning of a third example alloy.
  • the third example alloy consists of 58% Cu, 41% Zn and 1% Mg. It can be clearly seen that the chips produced are shorter than the chips produced by longitudinal turning of the second example alloy.
  • the fourth example alloy consists of 58% Cu, 40.5% Zn and 1.5% Mg.
  • the chips produced when turning the fourth example alloy are even smaller than the chips produced by longitudinal turning of the third example alloy.
  • the proposed addition of 0.1 to 1.5% Mg to a lead-free and antimony-free brass alloy means that chip breaking can be significantly improved.
  • the proposed brass alloy is also characterized by low hot embrittlement. It can be processed by means of hot forming, in particular in the continuous casting process.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Domestic Plumbing Installations (AREA)
  • Conductive Materials (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Contacts (AREA)
  • Lead Frames For Integrated Circuits (AREA)
  • Sliding-Contact Bearings (AREA)
EP22184790.8A 2021-07-27 2022-07-13 Alliage de laiton sans plomb et antimoine Pending EP4124667A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021119474.1A DE102021119474A1 (de) 2021-07-27 2021-07-27 Blei- und Antimonfreie Messinglegierung

Publications (1)

Publication Number Publication Date
EP4124667A1 true EP4124667A1 (fr) 2023-02-01

Family

ID=82594778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22184790.8A Pending EP4124667A1 (fr) 2021-07-27 2022-07-13 Alliage de laiton sans plomb et antimoine

Country Status (11)

Country Link
US (1) US20230035864A1 (fr)
EP (1) EP4124667A1 (fr)
JP (1) JP2023021941A (fr)
KR (1) KR20230017150A (fr)
CN (1) CN115679151A (fr)
AU (1) AU2022209210A1 (fr)
BR (1) BR102022014247A2 (fr)
DE (1) DE102021119474A1 (fr)
IL (1) IL295024A (fr)
MX (1) MX2022009224A (fr)
ZA (1) ZA202207823B (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06179932A (ja) * 1991-07-01 1994-06-28 Nikko Kinzoku Kk 導電性ばね用銅合金
JPH08176707A (ja) * 1994-12-27 1996-07-09 Sumitomo Electric Ind Ltd ワイヤ放電加工用電極線
CN101161836A (zh) * 2007-10-16 2008-04-16 中南大学 一种无铅易切削镁黄铜合金及其制备方法
EP2133437B1 (fr) 2008-06-11 2011-06-15 Xiamen LOTA International Co., Ltd Alliage de laiton en magnésium de décolletage sans plomb et sans étain, et son procédé de fabrication
EP2913415A1 (fr) 2014-01-03 2015-09-02 JiaXing IDC Plumbing & Heating Technology Ltd Laiton sans plomb, sans bismuth, sans silicone
EP2467507B1 (fr) 2009-08-18 2019-02-27 Aurubis Stolberg GmbH & Co. KG Alliage de laiton
EP3320122B1 (fr) 2015-07-10 2020-08-12 Aurubis Stolberg GmbH & Co. KG Alliage de laiton
WO2020261603A1 (fr) 2019-06-25 2020-12-30 三菱マテリアル株式会社 Alliage de cuivre de décolletage et procédé de fabrication d'alliage de cuivre de décolletage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61178216A (ja) 1985-02-01 1986-08-09 Sanden Corp 車輛用空調装置における可変容量圧縮機の制御装置
JPH04236734A (ja) 1991-01-14 1992-08-25 Sumitomo Metal Mining Co Ltd Ｓｎ、Ｍｇ及びＰが添加された耐腐食性に優れる黄銅
CN101787461B (zh) * 2010-03-02 2014-11-19 路达(厦门)工业有限公司 一种环保型锰黄铜合金及其制造方法
JP5869422B2 (ja) * 2012-05-09 2016-02-24 サンエツ金属株式会社 耐高温脆性に優れた黄銅合金
DE102013107011A1 (de) * 2013-07-03 2015-01-08 Thyssenkrupp Steel Europe Ag Verfahren zum Beschichten von Cu-Langprodukten mit einer metallischen Schutzschicht und mit einer metallischen Schutzschicht versehenes Cu-Langprodukt
CN112226645B (zh) * 2020-09-03 2021-11-30 宁波金田铜业(集团)股份有限公司 一种无铅易切削黄铜及其制备方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06179932A (ja) * 1991-07-01 1994-06-28 Nikko Kinzoku Kk 導電性ばね用銅合金
JPH08176707A (ja) * 1994-12-27 1996-07-09 Sumitomo Electric Ind Ltd ワイヤ放電加工用電極線
CN101161836A (zh) * 2007-10-16 2008-04-16 中南大学 一种无铅易切削镁黄铜合金及其制备方法
EP2133437B1 (fr) 2008-06-11 2011-06-15 Xiamen LOTA International Co., Ltd Alliage de laiton en magnésium de décolletage sans plomb et sans étain, et son procédé de fabrication
EP2467507B1 (fr) 2009-08-18 2019-02-27 Aurubis Stolberg GmbH & Co. KG Alliage de laiton
EP2913415A1 (fr) 2014-01-03 2015-09-02 JiaXing IDC Plumbing & Heating Technology Ltd Laiton sans plomb, sans bismuth, sans silicone
EP3320122B1 (fr) 2015-07-10 2020-08-12 Aurubis Stolberg GmbH & Co. KG Alliage de laiton
WO2020261603A1 (fr) 2019-06-25 2020-12-30 三菱マテリアル株式会社 Alliage de cuivre de décolletage et procédé de fabrication d'alliage de cuivre de décolletage
EP3872198A1 (fr) 2019-06-25 2021-09-01 Mitsubishi Materials Corporation Alliage de cuivre de décolletage et procédé de fabrication d'alliage de cuivre de décolletage

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ADINEH MORTEZA ET AL: "Microstructure, mechanical properties and machinability of Cu-Zn-Mg and Cu-Zn-Sb brass alloys", MATERIALS SCIENCE AND TECHNOLOGY, vol. 35, no. 12, 19 June 2019 (2019-06-19), GB, pages 1504 - 1514, XP093005147, ISSN: 0267-0836, Retrieved from the Internet <URL:https://www.tandfonline.com/doi/pdf/10.1080/02670836.2019.1630089?needAccess=true> DOI: 10.1080/02670836.2019.1630089 *
HARUHIKO ATSUMI ET AL: "Fabrication and properties of high-strength extruded brass using elemental mixture of Cu40% Zn alloy powder and Mg particle", MATERIALS CHEMISTRY AND PHYSICS, ELSEVIER SA, SWITZERLAND, TAIWAN, REPUBLIC OF CHINA, vol. 135, no. 2, 6 May 2012 (2012-05-06), pages 554 - 562, XP028414791, ISSN: 0254-0584, [retrieved on 20120512], DOI: 10.1016/J.MATCHEMPHYS.2012.05.025 *
LEE DONG-BOK ET AL: "The effect of small additions of Zr, Cr, Mg, Al, and Si on the oxidation of 6:4 brass", METALS AND MATERIALS INTERNATIONAL, vol. 8, no. 3, 31 May 2002 (2002-05-31), Seoul, pages 327 - 332, XP093005172, ISSN: 1598-9623, Retrieved from the Internet <URL:https://link.springer.com/content/pdf/10.1007/BF03186103.pdf> DOI: 10.1007/BF03186103 *

Also Published As

Publication number Publication date
US20230035864A1 (en) 2023-02-02
KR20230017150A (ko) 2023-02-03
MX2022009224A (es) 2023-01-30
BR102022014247A2 (pt) 2023-02-07
JP2023021941A (ja) 2023-02-14
ZA202207823B (en) 2023-04-26
AU2022209210A1 (en) 2023-02-16
IL295024A (en) 2023-02-01
DE102021119474A1 (de) 2023-02-02
CN115679151A (zh) 2023-02-03

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