EP3024956A1 - Korngefeinte kupfer-gusslegierung mit eisen und bor - Google Patents
Korngefeinte kupfer-gusslegierung mit eisen und borInfo
- Publication number
- EP3024956A1 EP3024956A1 EP14735475.7A EP14735475A EP3024956A1 EP 3024956 A1 EP3024956 A1 EP 3024956A1 EP 14735475 A EP14735475 A EP 14735475A EP 3024956 A1 EP3024956 A1 EP 3024956A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- iron
- content
- boron
- weight
- copper
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 120
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910052796 boron Inorganic materials 0.000 title claims abstract description 57
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 57
- 239000010949 copper Substances 0.000 title claims abstract description 17
- 229910045601 alloy Inorganic materials 0.000 title claims description 38
- 239000000956 alloy Substances 0.000 title claims description 38
- 229910052802 copper Inorganic materials 0.000 title claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 11
- 238000005266 casting Methods 0.000 title description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 36
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 17
- 229910000676 Si alloy Inorganic materials 0.000 claims abstract description 16
- QBOMBCGAEZXOSM-UHFFFAOYSA-N [Si].[Zn].[Cu] Chemical compound [Si].[Zn].[Cu] QBOMBCGAEZXOSM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 6
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000007670 refining Methods 0.000 claims description 24
- 229910052718 tin Inorganic materials 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 229910052745 lead Inorganic materials 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- 239000011701 zinc Substances 0.000 description 10
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 8
- 238000007792 addition Methods 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 229910052726 zirconium Inorganic materials 0.000 description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229910001297 Zn alloy Inorganic materials 0.000 description 3
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 208000011893 Febrile infection-related epilepsy syndrome Diseases 0.000 description 1
- 241001275902 Parabramis pekinensis Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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 a copper casting alloy.
- the invention relates to a copper-zinc-silicon alloy in which boron and iron and optionally nickel are added.
- molded parts made of copper alloys are produced as castings.
- molded parts are fittings, elbows, tees 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.
- the homogeneity of the structure is achieved by forming.
- the material 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. 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.
- 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.
- the casting condition after the second casting is crucial.
- EP 1 777 305 A1 proposes to add 0.0005 to 0.04% zircon for grain refining to a copper-zinc-silicon alloy.
- a disadvantage of zirconium is its burning during melting and casting. In the production of castings, it is therefore difficult to ensure the desired zirconium content in the finished component.
- EP 1 817 438 B1 it is proposed to add 0.05 to 2% by weight of manganese to a copper-zinc-silicon alloy in order to improve the microstructure. It is also proposed to add to the alloy additionally 0.01 to 0.05 wt .-% zirconium as grain refining agent. This is consistent with studies showing that the addition of manganese without zirconium does not cause grain refining.
- boron as a grain refining agent for copper alloys.
- DE 10 2005 024 037 A1 proposes adding 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 invention has for its object to provide improved copper 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 includes a copper alloy having the following composition [in% by weight]: Cu 70.0 to 97.0%,
- the ratio of boron content and the sum of iron and nickel content is at least 0.025 and at most 0.12.
- the invention is based on the consideration that by the simultaneous addition of boron and iron to a silicon-containing copper-zinc alloy, a grain refining of the cast structure occurs when boron content and iron content are in a certain ratio to one another. 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 weight aspects of the total alloy. Are boron content and the sum of iron and nickel content in the relation to each other, 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 according to the invention is limited to a maximum of 0.25 wt .-%.
- the lead content of the alloy may be at most
- 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 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 provides 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 Wt .-%, already arises at the first casting of the alloy, a fine-grained structure.
- the nickel content may amount to 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 iron 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
- the invention further includes the use of boron and iron in combination as grain refining agents in copper-zinc-silicon alloys.
- the ratio of boron content of the alloy [in% by weight] and iron content of the alloy [in% by weight] is at least 0.025 and at most 0, 12.
- the copper-zinc-silicon alloy may have the following composition [in wt. -%] exhibit:
- boron and iron in the above ratio of contents
- 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 wt .-% and at most 0.5 wt .-%.
- Grain refining of copper-zinc-silicon alloys includes all the above-described preferred embodiments of a silicon-containing copper-zinc alloy according to the invention.
- the invention further includes the use of boron, iron and nickel in combination as grain refining agents in copper-zinc-silicon alloys.
- the ratio of boron content of the alloy [in wt .-%] and the sum of iron and nickel content of the alloy [in wt .-%] at least 0.025 and at most 0.12, the copper-zinc-silicon alloy can have the following composition [in% by weight]:
- grain refining of the cast structure may occur in a copper-zinc-silicon alloy.
- the boron content is at least 0.005 wt .-% and at most 0.025 wt .-%.
- 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 of the above-described preferred embodiments of a silicon-containing copper-zinc alloy according to the invention. The invention will be explained in more detail with reference to the embodiments shown in Table 1.
- 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 1 1 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.
- a fine-grained cast structure is always to be observed after the second casting. The quotient of boron content and iron content in these samples is between 0.03 and 0.1. The addition of tin has no influence on the formation of the fine-grained casting structure.
- 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 said
- 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.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17001201.7A EP3260561B1 (de) | 2013-07-24 | 2014-07-03 | Kornfeinung von kupfer-zink-silicium-gusslegierungen mit eisen und bor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013012288.0A DE102013012288A1 (de) | 2013-07-24 | 2013-07-24 | Korngefeinte Kupfer-Gusslegierung |
PCT/EP2014/001832 WO2015010768A1 (de) | 2013-07-24 | 2014-07-03 | Korngefeinte kupfer-gusslegierung mit eisen und bor |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17001201.7A Division-Into EP3260561B1 (de) | 2013-07-24 | 2014-07-03 | Kornfeinung von kupfer-zink-silicium-gusslegierungen mit eisen und bor |
EP17001201.7A Division EP3260561B1 (de) | 2013-07-24 | 2014-07-03 | Kornfeinung von kupfer-zink-silicium-gusslegierungen mit eisen und bor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3024956A1 true EP3024956A1 (de) | 2016-06-01 |
EP3024956B1 EP3024956B1 (de) | 2018-06-27 |
Family
ID=51063400
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14735475.7A Active EP3024956B1 (de) | 2013-07-24 | 2014-07-03 | Korngefeinte kupfer-gusslegierung mit eisen und bor |
EP17001201.7A Active EP3260561B1 (de) | 2013-07-24 | 2014-07-03 | Kornfeinung von kupfer-zink-silicium-gusslegierungen mit eisen und bor |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17001201.7A Active EP3260561B1 (de) | 2013-07-24 | 2014-07-03 | Kornfeinung von kupfer-zink-silicium-gusslegierungen mit eisen und bor |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP3024956B1 (de) |
DE (1) | DE102013012288A1 (de) |
ES (1) | ES2813073T3 (de) |
WO (1) | WO2015010768A1 (de) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2234986A (en) | 1989-08-18 | 1991-02-20 | London Scandinavian Metall | Grain refining of copper-based alloys |
JPH03115538A (ja) * | 1989-09-29 | 1991-05-16 | Tsuneaki Mikawa | 粒子分散強化特殊銅合金 |
JPH04180531A (ja) * | 1990-11-14 | 1992-06-26 | Nikko Kyodo Co Ltd | 通電材料 |
US5893953A (en) * | 1997-09-16 | 1999-04-13 | Waterbury Rolling Mills, Inc. | Copper alloy and process for obtaining same |
EP1656467A2 (de) * | 2003-08-21 | 2006-05-17 | Honeywell International Inc. | Kupferhaltige pvd-targets und herstellungsverfahren dafür |
CA2563094C (en) | 2004-08-10 | 2012-03-27 | Sanbo Shindo Kogyo Kabushiki Kaisha | Copper-based alloy casting in which grains are refined |
DE102005024037A1 (de) | 2004-10-11 | 2006-04-13 | Diehl Metall Stiftung & Co.Kg | Kupfer-Zink-Silizium-Legierung, deren Verwendung und deren Herstellung |
BRPI0516067B1 (pt) | 2004-10-11 | 2014-10-14 | Diehl Metall Stiftung & Co Kg | Liga de cobre/zinco/silício, e seu processo de produção |
DE502005002181D1 (de) | 2005-12-14 | 2008-01-17 | Kemper Gebr Gmbh & Co Kg | Verwendung einer migrationsarmen Kupferlegierung sowie Bauteile aus dieser Legierung |
US20070253858A1 (en) * | 2006-04-28 | 2007-11-01 | Maher Ababneh | Copper multicomponent alloy and its use |
EP2196549B1 (de) * | 2007-10-10 | 2019-03-13 | Toto Ltd. | Bleifreies automatenmessing mit hervorragender giessbarkeit |
WO2009047919A1 (ja) * | 2007-10-10 | 2009-04-16 | Toto Ltd. | 鋳造性に優れた無鉛快削性黄銅 |
KR101340487B1 (ko) * | 2011-09-30 | 2013-12-12 | 주식회사 풍산 | 쾌삭성 무연 구리합금 및 이의 제조방법 |
CN103114220B (zh) | 2013-02-01 | 2015-01-21 | 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 |
-
2013
- 2013-07-24 DE DE102013012288.0A patent/DE102013012288A1/de active Pending
-
2014
- 2014-07-03 WO PCT/EP2014/001832 patent/WO2015010768A1/de active Application Filing
- 2014-07-03 EP EP14735475.7A patent/EP3024956B1/de active Active
- 2014-07-03 EP EP17001201.7A patent/EP3260561B1/de active Active
- 2014-07-03 ES ES17001201T patent/ES2813073T3/es active Active
Also Published As
Publication number | Publication date |
---|---|
EP3024956B1 (de) | 2018-06-27 |
EP3260561B1 (de) | 2020-06-24 |
ES2813073T3 (es) | 2021-03-22 |
DE102013012288A1 (de) | 2015-01-29 |
EP3260561A1 (de) | 2017-12-27 |
WO2015010768A1 (de) | 2015-01-29 |
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