EP3260561A1 - Affinement de grains d'alliages de coulée cuivre/zinc/silicium à l'aide de fer et de bore - Google Patents

Affinement de grains d'alliages de coulée cuivre/zinc/silicium à l'aide de fer et de bore Download PDF

Info

Publication number: EP3260561A1
Authority: EP; European Patent Office
Prior art keywords: iron; boron; content; weight; alloy
Prior art date: 2013-07-24
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

EP17001201.7A

Other languages

German (de)

English (en)

Other versions

EP3260561B1 (fr

Inventor

Michael Scharf

Jochen Aufrecht

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.)

Wieland Werke AG

Original Assignee

Wieland Werke 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.)

2013-07-24

Filing date

2014-07-03

Publication date

2017-12-27

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=51063400&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3260561(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2014-07-03 Application filed by Wieland Werke AG filed Critical Wieland Werke AG

2017-12-27 Publication of EP3260561A1 publication Critical patent/EP3260561A1/fr

2020-06-24 Application granted granted Critical

2020-06-24 Publication of EP3260561B1 publication Critical patent/EP3260561B1/fr

Status Active legal-status Critical Current

2034-07-03 Anticipated expiration legal-status Critical

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
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising

Definitions

the invention relates to the grain refining of copper-zinc-silicon casting alloys in which boron and iron and optionally nickel are added for grain refinement.
molded parts made of copper alloys are produced as castings.
molded parts are fittings, elbows, T-pieces for media-carrying piping systems, components for pumps and valves as well as structural parts in mechanical and plant engineering and in vehicle construction.
silicon-containing brasses are used as material for this purpose.
a material In order to ensure the mechanical stability of the molded part, a material is required, which already has a homogeneous structure in the cast state. Inhomogeneities in the structure must be taken into account by costly safety margins or they can lead to failure of the component. With wrought materials, the homogeneity of the structure is achieved by forming. In order to achieve a homogeneous structure without forming steps, the material must already have a fine-grained structure in the cast state. After casting, the molding is in many cases by machining, grinding or polishing, such as sealing surfaces, reworked. For this purpose, the material must be free from voids and hard particles. Furthermore, a coarse dendritic microstructure has a negative effect on the corrosion resistance of the material.
the material In the production of castings, the material is usually melted and poured twice: the first time the alloy is melted, the alloy composition is roughly adjusted. The alloy is poured into ingots. For the production of the castings, the ingots are melted down and the alloy is cast into moldings. A change in the alloy composition during this second reflow and pouring operation is undesirable but unavoidable due to the burning of some elements, such as Zn, Zr or P. For the quality of the product, the casting condition after the second casting is crucial.
boron as a grain refining agent for copper alloys is known. So will in DE 10 2005 024 037 A1 proposed to add 0.00001 to 0.5% boron to a copper-zinc-silicon alloy. Boron-fines of small amounts of boron are detected by alloys containing approximately 76% copper, 21% zinc and 3% silicon.
the publication CN 103114220 A discloses a Cu-Zn-Si alloy containing 0.11-0.2% Fe and 0.001-0.01% B, Ag and / or Ti.
the invention has for its object to provide improved grain refining agent for copper-zinc-silicon casting alloys.
a grain refining of the cast structure should be able to be achieved largely independently of the zinc or copper content.
grain refining agents for copper contents greater than 80% by weight are particularly desirable.
the invention is related to the use of boron and iron as grain refining agents by the features of claim 1 and with respect to Use of boron, iron and nickel as grain refining agent represented by the features of claim 3.
the other dependent claims relate to advantageous embodiments and further developments of the invention.
grain refining of the cast structure occurs when boron content and iron content are in a certain ratio.
Iron can be partially replaced by nickel.
the ratio of boron content and the sum of iron and nickel content is at least 0.025 and at most 0.12.
the respective element contents are defined as parts by weight of the total alloy.
iron borides or nickel borides or iron-nickel Mischboride can form. These borides lead to the formation of a fine grain in the cast structure of the material.
the alloy may contain tin.
Tin improves the corrosion resistance of the material. With tin contents greater than 2.0% by weight, unwanted tin blends may occur due to the interaction of all alloy constituents.
the alloy may contain phosphorus.
phosphorus serves to deoxidize the melt. Furthermore, it can favorably influence the formation of the initial cast structure and the corrosion properties. Phosphorus increases the fluidity of the melt and reduces the susceptibility of the material to stress corrosion cracking.
the lead content of the alloy is limited to a maximum of 0.25 wt .-%.
the lead content of the alloy may preferably be at most 0.1% by weight.
the alloy may contain small amounts of antimony and / or arsenic. These two elements reduce the tendency of the material for Entzinkung.
the ratio of boron content and the sum of iron and nickel content may be at least 0.05 and at most 0.075.
the boron content may be at least 0.005% by weight, more preferably at least 0.01% by weight and at most 0.025% by weight.
Boron contents of at least 0.005 wt .-%, preferably at least 0.01 wt .-%, in conjunction with iron and optionally nickel borides can form particularly rapidly. With a boron content greater than 0.025 wt .-% can lead to the formation of undesirable large borides.
the iron content may be at least 0.1% by weight and at most 0.5% by weight.
This preferred selection of iron content is stoichiometrically particularly favorable conditions for the formation of borides in suitable frequency and size.
this preferred iron content is combined with a boron content of not less than 0.01% by weight and not more than 0.025% by weight. -% is already present at the first casting of the alloy, a fine-grained structure.
the nickel content may be at most 0.3 wt .-%.
nickel can at least partially replace the iron.
the sum of iron and nickel content at least 0.1 wt .-% and at most 0.5 wt .-% amount.
the copper content of the alloy may be more than 80% by weight, preferably at least 81% by weight. Copper contents of more than 80% by weight make the alloy particularly corrosion-resistant and therefore suitable for use in fluid-carrying piping systems, such as drinking water pipes.
the silicon content in this copper content is typically at least 3 wt .-% and at most 4 wt .-%.
the zinc content is then below 16 wt .-%, and is preferably at least 8 wt .-% and at most 15 wt .-%.
grain refining of the cast structure may occur in a copper-zinc-silicon alloy.
the boron content is preferably at least 0.005% by weight and at most 0.025% by weight.
the iron content is preferably at least 0.1% by weight and at most 0.5% by weight.
the aspect of the inventive use of boron and iron for grain refining of copper-zinc-silicon casting alloys includes all the preferred embodiments of a silicon-containing copper-zinc casting alloy described above.
grain refining of the cast structure may occur in a copper-zinc-silicon alloy.
the boron content is preferably at least 0.005% by weight and at most 0.025% by weight.
the iron content is preferably at least 0.1% by weight and at most 0.5% by weight.
the nickel content is preferably at least 0.05% by weight and at most 0.3% by weight.
the aspect of the inventive use of boron, iron and nickel for grain refining of copper-zinc-silicon alloys includes all the preferred embodiments of a silicon-containing copper-zinc alloy described above.
Table 1 shows the composition in% by weight of 18 test alloys.
the penultimate column of the table gives the ratio of boron content and the sum of iron and nickel content.
the alloys were melted and poured off.
the individual casts were melted down again and poured off a second time.
the samples were characterized metallographically.
the last column of the table indicates whether the structure after the second casting was coarse or fine grained.
Samples 1 to 3 contain no boron.
the cast structure is always coarse-grained.
Sample 4 and sample 11 contain small amounts of boron. Again, the structure is coarse-grained.
Samples 5 to 10 contain both boron (0.01 to 0.02 wt%) and iron (0.1 to 0.3 wt%). Sample 8 additionally contains 0.4% by weight of tin. For samples 5 to 10, a fine-grained cast structure is always observed after the second casting. The quotient of boron content and iron content in these samples is between 0.03 and 0.11. The addition of tin has no influence on the formation of the fine-grained casting structure.
the samples 5, 7, 8 and 15, in contrast to the other samples after the first casting have a fine-grained structure.
These samples are characterized in that the quotient of boron content and the sum of iron and nickel content is between 0.05 and 0.065. If one chooses the alloy composition so that the quotient mentioned lies exactly in this window, then the formation of iron borides or nickel borides or iron-nickel Mischboriden is particularly favored. Iron borides with the stoichiometric formula Fe 3 B would correspond exactly to this weight ratio of boron and iron.
sample 18 On the basis of sample 18, the influence of manganese on the cast structure was examined in the form of a random sample. Sample 18 contains no boron but about 0.08 wt% manganese. The manganese-containing sample always shows a coarse-grained cast structure.

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Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

EP17001201.7A 2013-07-24 2014-07-03 Affinement de grains d'alliages de coulée cuivre/zinc/silicium à l'aide de fer et de bore Active EP3260561B1 (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
DE102013012288.0A DE102013012288B4 (de)	2013-07-24	2013-07-24	Korngefeinte Kupfer-Gusslegierung
PCT/EP2014/001832 WO2015010768A1 (fr)	2013-07-24	2014-07-03	Alliage de fonderie en cuivre à grains affinés comprenant du fer et du bore
EP14735475.7A EP3024956B1 (fr)	2013-07-24	2014-07-03	Alliage de fonderie en cuivre à grains affinés comprenant du fer et du bore

Related Parent Applications (2)

Application Number	Title	Priority Date	Filing Date
EP14735475.7A Division-Into EP3024956B1 (fr)	2013-07-24	2014-07-03	Alliage de fonderie en cuivre à grains affinés comprenant du fer et du bore
EP14735475.7A Division EP3024956B1 (fr)	2013-07-24	2014-07-03	Alliage de fonderie en cuivre à grains affinés comprenant du fer et du bore

Publications (2)

Publication Number	Publication Date
EP3260561A1 true EP3260561A1 (fr)	2017-12-27
EP3260561B1 EP3260561B1 (fr)	2020-06-24

Family

ID=51063400

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
EP14735475.7A Active EP3024956B1 (fr)	2013-07-24	2014-07-03	Alliage de fonderie en cuivre à grains affinés comprenant du fer et du bore
EP17001201.7A Active EP3260561B1 (fr)	2013-07-24	2014-07-03	Affinement de grains d'alliages de coulée cuivre/zinc/silicium à l'aide de fer et de bore

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
EP14735475.7A Active EP3024956B1 (fr)	2013-07-24	2014-07-03	Alliage de fonderie en cuivre à grains affinés comprenant du fer et du bore

Country Status (4)

Country	Link
EP (2)	EP3024956B1 (fr)
DE (1)	DE102013012288B4 (fr)
ES (1)	ES2813073T3 (fr)
WO (1)	WO2015010768A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1991002826A1 (fr)	1989-08-18	1991-03-07	London & Scandinavian Metallurgical Co. Limited	Affinage du grain d'alliages a base de cuivre
DE102005024037A1 (de)	2004-10-11	2006-04-13	Diehl Metall Stiftung & Co.Kg	Kupfer-Zink-Silizium-Legierung, deren Verwendung und deren Herstellung
EP1777305A1 (fr)	2004-08-10	2007-04-25	Sanbo Shindo Kogyo Kabushiki Kaishah	Moulage d'alliage de cuivre avec des granules de cristal raffiné
EP1817438B1 (fr)	2005-12-14	2008-10-01	Gebr. Kemper GmbH + Co. KG Metallwerke	Alliage de cuivre peu sensible aux migrations
WO2009047919A1 (fr) *	2007-10-10	2009-04-16	Toto Ltd.	Laiton de décolletage exempt de plomb présentant une excellente aptitude à la coulée
US20090263272A1 (en)	2007-10-10	2009-10-22	Toru Uchida	Lead-free free-machining brass having improved castability
CN103114220A (zh)	2013-02-01	2013-05-22	路达(厦门)工业有限公司	一种热成型性能优异的无铅易切削耐蚀黄铜合金

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JPH04180531A (ja) *	1990-11-14	1992-06-26	Nikko Kyodo Co Ltd	通電材料
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WO2005021828A2 (fr) *	2003-08-21	2005-03-10	Honeywell International Inc.	Cibles pvd comprenant du cuivre dans des melanges ternaires, et procedes pour former des cibles pvd contenant du cuivre
PT1812612E (pt)	2004-10-11	2010-06-28	Diehl Metall Stiftung & Co Kg	Liga metálica de cobre-zinco-silício, o respectivo uso e fabrico
US20070253858A1 (en) *	2006-04-28	2007-11-01	Maher Ababneh	Copper multicomponent alloy and its use
KR101340487B1 (ko) *	2011-09-30	2013-12-12	주식회사 풍산	쾌삭성 무연 구리합금 및 이의 제조방법

2013
- 2013-07-24 DE DE102013012288.0A patent/DE102013012288B4/de active Active
2014
- 2014-07-03 EP EP14735475.7A patent/EP3024956B1/fr active Active
- 2014-07-03 ES ES17001201T patent/ES2813073T3/es active Active
- 2014-07-03 WO PCT/EP2014/001832 patent/WO2015010768A1/fr not_active Ceased
- 2014-07-03 EP EP17001201.7A patent/EP3260561B1/fr active Active

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1991002826A1 (fr)	1989-08-18	1991-03-07	London & Scandinavian Metallurgical Co. Limited	Affinage du grain d'alliages a base de cuivre
EP1777305A1 (fr)	2004-08-10	2007-04-25	Sanbo Shindo Kogyo Kabushiki Kaishah	Moulage d'alliage de cuivre avec des granules de cristal raffiné
DE102005024037A1 (de)	2004-10-11	2006-04-13	Diehl Metall Stiftung & Co.Kg	Kupfer-Zink-Silizium-Legierung, deren Verwendung und deren Herstellung
EP1817438B1 (fr)	2005-12-14	2008-10-01	Gebr. Kemper GmbH + Co. KG Metallwerke	Alliage de cuivre peu sensible aux migrations
WO2009047919A1 (fr) *	2007-10-10	2009-04-16	Toto Ltd.	Laiton de décolletage exempt de plomb présentant une excellente aptitude à la coulée
US20090263272A1 (en)	2007-10-10	2009-10-22	Toru Uchida	Lead-free free-machining brass having improved castability
CN103114220A (zh)	2013-02-01	2013-05-22	路达(厦门)工业有限公司	一种热成型性能优异的无铅易切削耐蚀黄铜合金

Also Published As

Publication number	Publication date
DE102013012288B4 (de)	2025-10-16
WO2015010768A1 (fr)	2015-01-29
EP3024956A1 (fr)	2016-06-01
ES2813073T3 (es)	2021-03-22
EP3024956B1 (fr)	2018-06-27
EP3260561B1 (fr)	2020-06-24
DE102013012288A1 (de)	2015-01-29

Publication	Publication Date	Title
DE3834460C2 (fr)	1991-10-17
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DE102016219711B4 (de)	2023-11-16	Aluminiumlegierung zum Druckgießen und Verfahren zu ihrer Hitzebehandlung
EP3775309B1 (fr)	2021-12-15	Alliage d'aluminium pour coulée sous pression
DE102013008822A1 (de)	2014-11-27	Mine für Kugelschreiber und Verwendung
DE102012013817A1 (de)	2014-01-16	Formteile aus korrosionsbeständigen Kupferlegierungen
EP1888798B1 (fr)	2008-12-10	Alliage d'aluminium pour paliers lisses
EP3581667B1 (fr)	2023-04-12	Pièces moulées d'un alliage de cuivre résistant à la corrosion et pouvant être usiné
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DE1458428B2 (de)	1970-11-26	Kupferlegierung
EP3024956B1 (fr)	2018-06-27	Alliage de fonderie en cuivre à grains affinés comprenant du fer et du bore
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EP4481077A1 (fr)	2024-12-25	Alliage de laiton sans plomb
EP1980633B1 (fr)	2011-09-07	Usage d'un alliage de cuivre pour un vis sans fin
EP4569148A1 (fr)	2025-06-18	Matériau de coulée fait d'un alliage de cuivre-zinc, procédé de fabrication d'un produit coulé et pièce coulée
DE202007019373U1 (de)	2012-02-06	Verwendung einer Bronzelegierung für ein Schneckenzahnrad
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AT512120B1 (de)	2013-07-15	Aluminiumlegierung mit tantal
AT412725B (de)	2005-06-27	Mittel zur beeinflussung der erstarrungsstruktur von magnesium und magnesiumlegierungen
DE102017006970B4 (de)	2025-08-21	Gussbauteil aus einer Kupfergusslegierung und Gießverfahren
EP4294956A1 (fr)	2023-12-27	Alliage de laiton
DE102018212942B4 (de)	2021-05-12	Verfahren zum Erzeugen einer Schmelze einer Kupfergusslegierung und Gussstück, hergestellt aus dieser Schmelze
DE102022002927A1 (de)	2024-02-22	Kupfer-Zink-Knetlegierung, Halbzeug aus einer Kupfer-Zink-Knetlegierung und Verfahren zur Herstellung von solchem Halbzeug

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