WO2024052220A1 - Bleifreie messinglegierung und daraus hergestelltes lagerbauteil - Google Patents

Bleifreie messinglegierung und daraus hergestelltes lagerbauteil Download PDF

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Publication number
WO2024052220A1
WO2024052220A1 PCT/EP2023/074001 EP2023074001W WO2024052220A1 WO 2024052220 A1 WO2024052220 A1 WO 2024052220A1 EP 2023074001 W EP2023074001 W EP 2023074001W WO 2024052220 A1 WO2024052220 A1 WO 2024052220A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
lead
brass alloy
free brass
less
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.)
Ceased
Application number
PCT/EP2023/074001
Other languages
German (de)
English (en)
French (fr)
Inventor
Florian Seuss
Patrick Feldner
Volker Bräutigam
Alexander Dehnelt
Sven Reimus
Miroslava Sakaliyska
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.)
VDM Metals International GmbH
Diehl Brass Solutions Stiftung and Co KG
Original Assignee
VDM Metals International GmbH
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 VDM Metals International GmbH, Diehl Brass Solutions Stiftung and Co KG filed Critical VDM Metals International GmbH
Priority to KR1020257007729A priority Critical patent/KR20250065335A/ko
Priority to EP23767826.3A priority patent/EP4584406A1/de
Priority to CN202380061867.5A priority patent/CN119836482A/zh
Priority to JP2025514617A priority patent/JP2025529998A/ja
Publication of WO2024052220A1 publication Critical patent/WO2024052220A1/de
Priority to US19/069,296 priority patent/US20250197970A1/en
Priority to MX2025002756A priority patent/MX2025002756A/es
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C22C9/04—Alloys based on copper with zinc as the next major constituent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/08—Attachment of brasses, bushes or linings to the bearing housing

Definitions

  • the invention relates to a lead-free brass alloy.
  • the invention is therefore based on the object of specifying a lead-free brass alloy that is easy to machine and has good frictional wear resistance.
  • the brass alloy according to the invention contains: 59 to 62% by weight Cu, 2.0 to 2.5% by weight Mn, 0.5 to 1.5% by weight Si, less than 0.1% by weight Pb, the balance Zn and unavoidable contamination.
  • the brass alloy according to the invention has less than 0.1% by weight of Pb and is therefore considered lead-free. It has been shown that the brass alloy according to the invention shows satisfactory machinability despite the low lead content of less than 0.1% by weight. In particular, no unwanted long spiral chips are formed during machining. In addition, the friction properties of the lead-free brass alloy according to the invention are comparable to those of a lead-containing brass alloy.
  • An advantageous embodiment of the invention provides that the ratio of the weight percent of Mn to Si corresponds to the inequality 2.2 ⁇ Mn/Si ⁇ 3.2. It has been found that this ratio between manganese and silicon leads to an optimal chemical composition and the formation of manganese silicides.
  • manganese silicides are arranged in parallel on a functional surface. This increases the proportion of manganese silicides in the functional surface and improves the friction properties.
  • the parallel arrangement of the manganese silicides is achieved through a manufacturing process that involves hot forming.
  • the lead-free brass alloy according to the invention preferably contains less than 0.1% by weight of Fe, preferably 0.07% by weight of Fe.
  • the lead-free brass alloy according to the invention preferably contains less than 0.5% by weight of Sn, preferably 0.07% by weight of Sn.
  • composition of the lead-free brass alloy according to the invention is particularly preferred: 61.2% by weight Cu, 2.3% by weight Mn, 0.8% by weight Si, 0.07% by weight Fe, 0.07% by weight Sn , less than 0.1% by weight of Pb, the balance of Zn and unavoidable impurities.
  • the lead-free brass alloy according to the invention preferably contains less than 0.2% by weight of Ni, preferably 0.02% by weight to less than 0.2% by weight of Ni.
  • a preferred embodiment of the invention provides that the lead-free brass alloy contains less than 0.1% by weight of Al, preferably 0.01% by weight to less than 0.1% by weight of Al.
  • the lead-free brass alloy can also contain less than 0.25% by weight of Cr and/or less than 0.25% by weight of Ti and/or less than 0.25% by weight of Co.
  • the invention relates to a bearing element or a bushing which is made from the lead-free brass alloy according to the invention. Because of your Due to its good friction properties, the lead-free brass alloy is ideal for the production of bearing elements and bushings.
  • Fig. 1 shows a functional surface of a lead-free brass alloy according to the invention
  • Fig. 3 shows a chip image produced by machining a lead-free brass alloy according to the invention.
  • An exemplary embodiment of the lead-free brass alloy has the following composition: 61.2% by weight Cu, 2.3% by weight Mn, 0.8% by weight Si, 0.07% by weight Fe, 0.07% by weight Sn, less than 0.1% by weight of Pb, the balance of Zn and unavoidable impurities.
  • the lead-free brass alloy can be processed into semi-finished products such as plates, pipes or rods, from which components such as bearing elements, bushings or the like can then be made.
  • Fig. 1 shows a functional surface of a semi-finished product that was made from the lead-free brass alloy. It can be seen that there are manganese silicides arranged in parallel on the functional surface. The comparatively high surface area of the manganese silicides on the functional surface improves their friction properties.
  • the machinability of the lead-free brass alloy is compared with a reference alloy.
  • the table below shows the compositions of the lead-free brass alloy and the reference alloy:
  • FIG. 2 shows the chip pattern of the lead-free brass alloy
  • Fig. 3 shows the chip pattern of the lead-containing reference alloy. It can be seen that both alloys produce chips of approximately the same size and type. The chip quality of the lead-free brass alloy is therefore okay.
  • the coefficient of friction was determined in identical tests for both alloys. It was found that both the lead-free brass alloy and the lead-containing reference alloy have almost identical coefficients of friction. The coefficient of friction is approximately 0.012.
  • the lead-free brass alloy can be used, for example, for the production of bearing elements, bushings or other components in which relative movement occurs between two components.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Sliding-Contact Bearings (AREA)
PCT/EP2023/074001 2022-09-08 2023-09-01 Bleifreie messinglegierung und daraus hergestelltes lagerbauteil Ceased WO2024052220A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1020257007729A KR20250065335A (ko) 2022-09-08 2023-09-01 무연 황동 합금 및 이것으로 제조된 베어링 부품
EP23767826.3A EP4584406A1 (de) 2022-09-08 2023-09-01 Bleifreie messinglegierung und daraus hergestelltes lagerbauteil
CN202380061867.5A CN119836482A (zh) 2022-09-08 2023-09-01 无铅黄铜合金及由其制备的轴承构件
JP2025514617A JP2025529998A (ja) 2022-09-08 2023-09-01 無鉛真鍮合金及びそれから製造される軸受部品
US19/069,296 US20250197970A1 (en) 2022-09-08 2025-03-04 Lead-free brass alloy and bearing component produced therefrom
MX2025002756A MX2025002756A (es) 2022-09-08 2025-03-07 Aleacion de laton sin plomo y componente de cojinete producido a partir de la misma

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022122830.4 2022-09-08
DE102022122830.4A DE102022122830A1 (de) 2022-09-08 2022-09-08 Bleifreie Messinglegierung und daraus hergestelltes Lagerbauteil

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US19/069,296 Continuation US20250197970A1 (en) 2022-09-08 2025-03-04 Lead-free brass alloy and bearing component produced therefrom

Publications (1)

Publication Number Publication Date
WO2024052220A1 true WO2024052220A1 (de) 2024-03-14

Family

ID=87974239

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/074001 Ceased WO2024052220A1 (de) 2022-09-08 2023-09-01 Bleifreie messinglegierung und daraus hergestelltes lagerbauteil

Country Status (8)

Country Link
US (1) US20250197970A1 (https=)
EP (1) EP4584406A1 (https=)
JP (1) JP2025529998A (https=)
KR (1) KR20250065335A (https=)
CN (1) CN119836482A (https=)
DE (1) DE102022122830A1 (https=)
MX (1) MX2025002756A (https=)
WO (1) WO2024052220A1 (https=)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09316570A (ja) * 1996-05-30 1997-12-09 Chuetsu Gokin Chuko Kk ワンウェイクラッチ用エンドベアリング及び その他の摺動部品
EP2009122A1 (de) 2007-06-28 2008-12-31 Wieland-Werke Ag Kupfer-Zink-Legierung, Verfahren zur Herstellung und Verwendung
GB2478413A (en) * 2010-03-01 2011-09-07 Daido Metal Co A sliding bearing for use in turbochargers for internal combustion engines formed from a copper alloy
WO2016045770A1 (de) 2014-09-25 2016-03-31 Wieland-Werke Ag Elektrisches verbindungselement
EP3269835A1 (de) 2014-05-16 2018-01-17 Otto Fuchs - Kommanditgesellschaft - Sondermessinglegierung und legierungsprodukt
EP3272888A1 (de) 2016-07-21 2018-01-24 Wieland-Werke AG Werkstoff aus einer kupfer-zink-legierung, verfahren zur herstellung eines solchen werkstoffs und gleitelement aus einem solchen werkstoff

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101340487B1 (ko) 2011-09-30 2013-12-12 주식회사 풍산 쾌삭성 무연 구리합금 및 이의 제조방법
JP6376822B2 (ja) 2014-04-23 2018-08-22 大豊工業株式会社 すべり軸受用銅合金およびすべり軸受

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09316570A (ja) * 1996-05-30 1997-12-09 Chuetsu Gokin Chuko Kk ワンウェイクラッチ用エンドベアリング及び その他の摺動部品
EP2009122A1 (de) 2007-06-28 2008-12-31 Wieland-Werke Ag Kupfer-Zink-Legierung, Verfahren zur Herstellung und Verwendung
GB2478413A (en) * 2010-03-01 2011-09-07 Daido Metal Co A sliding bearing for use in turbochargers for internal combustion engines formed from a copper alloy
EP3269835A1 (de) 2014-05-16 2018-01-17 Otto Fuchs - Kommanditgesellschaft - Sondermessinglegierung und legierungsprodukt
WO2016045770A1 (de) 2014-09-25 2016-03-31 Wieland-Werke Ag Elektrisches verbindungselement
EP3272888A1 (de) 2016-07-21 2018-01-24 Wieland-Werke AG Werkstoff aus einer kupfer-zink-legierung, verfahren zur herstellung eines solchen werkstoffs und gleitelement aus einem solchen werkstoff

Also Published As

Publication number Publication date
US20250197970A1 (en) 2025-06-19
MX2025002756A (es) 2025-06-02
KR20250065335A (ko) 2025-05-12
CN119836482A (zh) 2025-04-15
EP4584406A1 (de) 2025-07-16
DE102022122830A1 (de) 2024-03-14
JP2025529998A (ja) 2025-09-09

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