EP1972695B1 - Production process of an aluminium alloy - Google Patents
Production process of an aluminium alloy Download PDFInfo
- Publication number
- EP1972695B1 EP1972695B1 EP20080002908 EP08002908A EP1972695B1 EP 1972695 B1 EP1972695 B1 EP 1972695B1 EP 20080002908 EP20080002908 EP 20080002908 EP 08002908 A EP08002908 A EP 08002908A EP 1972695 B1 EP1972695 B1 EP 1972695B1
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- EP
- European Patent Office
- Prior art keywords
- weight
- max
- alloy
- gew
- aluminium
- 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.)
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- 229910000838 Al alloy Inorganic materials 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 40
- 239000000956 alloy Substances 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 239000011777 magnesium Substances 0.000 claims description 13
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 10
- 229910052749 magnesium Inorganic materials 0.000 claims description 10
- 229910052712 strontium Inorganic materials 0.000 claims description 9
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 238000004512 die casting Methods 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
Definitions
- the invention relates to a method for producing an aluminum alloy, in particular for die casting.
- AlSiMg alloys especially the AlSi9MgMnSr alloy, which are sold under different trade names such as "Silafont 36", "Aural 2" and the like, are mostly used for the production of die-cast components (see, for example, the document: Koch H. et al. : “Silafont - 36 - The new low-iron high pressure casting alloy", Light Metals, 1995, pages 1011-1018 .).
- the iron is largely replaced by manganese.
- improvements in elongation are expected due to the reduced iron content and strontium addition.
- these die cast alloys are characterized not only by excellent castability but also by very good elongation in the cast state, maximum elongation after heat treatment and, moreover, by very good corrosion resistance.
- the object of the invention is therefore to provide a simple process for producing an AlSi9MgMnSr alloy which has at least as good properties as the commercially available AlSi9MgMnSr alloys.
- the master alloy is an aluminum alloy which contains the remaining manganese, the entire strontium and optionally iron and possibly the remaining magnesium of the aluminum alloy to be produced, ie an AlMnSr alloy which optionally additionally contains Fe and / or Mg, ie B an AlMnSrFe, AlMnSrMg or AlMnSrFeMg alloy.
- the manganese content of the master alloy is selected such that the manganese content in the alloy to be produced within wide limits of 0.3 to 1 wt.% Can be adjusted taking into account the burnup in the base alloy.
- the strontium content of the master alloy is selected so that the strontium content in the alloy to be produced is 50-300, preferably 150-250 ppm.
- the die cast alloy thus produced has the same properties as the commercial AlSi9MgMnSr die cast alloys. It is at least equivalent to commercially available AlSi9MgMnSr die-cast alloys both in terms of joining technology and in terms of their dynamic and static properties.
- the method according to the invention it is possible to economically convert a commercially available base alloy into a high-quality die casting variant without accepting metallurgical problems.
- the die-cast alloy produced by the process according to the invention can be used particularly well in motor vehicle and engine construction.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Continuous Casting (AREA)
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung einer Aluminium-Legierung, insbesondere für den Druckguss.The invention relates to a method for producing an aluminum alloy, in particular for die casting.
Zur Herstellung von Druckgussbauteilen werden meist AlSiMg-Legierungen verwendet, vor allem die Legierung AlSi9MgMnSr, die unter unterschiedlichen Handelsnamen wie "Silafont 36", "Aural 2" und dergleichen vertrieben werden (siehe z.B. das Dokument:
In der Automobilindustrie ist es von Bedeutung, eine bestimmte Legierung nicht nur von einem sondern von verschiedenen Herstellern beziehen zu können, damit z. B. bei Ausfall eines Herstellers kein Lieferengpass entsteht. Ferner sollen die Legierungen einzelner Hersteller miteinander vermischt werden können, ohne dass schmelzmetallurgische Probleme entstehen. Es hat sich jedoch gezeigt, dass, wenn die AlSi9MgMnSr-Legierungen verschiedener Hersteller vermischt werden, mitunter Legierungen entstehen können, die sowohl in gefügetechnischer Hinsicht wie in ihren dynamischen und statischen Eigenschaften unzureichend sind, und dies trotz gleicher chemischer Zusammensetzung.In the automotive industry, it is important to be able to obtain a particular alloy not only from one but from different manufacturers, so z. B. in case of failure of a manufacturer no supply bottleneck arises. Furthermore, the alloys of individual manufacturers should be able to be mixed together without melting-metallurgical problems. It has been found, however, that when the AlSi9MgMnSr alloys from different manufacturers are mixed, it is sometimes possible to produce alloys which are unsatisfactory both in terms of joining technology and in terms of their dynamic and static properties, and despite their chemical composition.
Aufgabe der Erfindung ist es daher, ein einfaches Verfahren zur Herstellung einer AlSi9MgMnSr-Legierung bereitzustellen, die zumindest gleich gute Eigenschaften wie die handelsüblichen AlSi9MgMnSr-Legierungen aufweist.The object of the invention is therefore to provide a simple process for producing an AlSi9MgMnSr alloy which has at least as good properties as the commercially available AlSi9MgMnSr alloys.
Dies wird erfindungsgemäß durch das im Anspruch 1 gekennzeichnete Verfahren erreicht.This is inventively achieved by the method characterized in claim 1.
Nach der Erfindung wird von einer handelsüblichen AlSi9Mg-Gusslegierung als Basislegierung ausgegangen, die folgende Zusammensetzung aufweist:
- 9,0 bis 12,5 Gew.% Silizium, 0,1 bis 0,45 Gew.%, insbesondere mindestens 0,3 Gew.% Magnesium und maximal 0,25 Gew.%, insbesondere maximal 0,15 Gew.% Eisen, maximal 0,15 Gew.% Titan, maximal 0,10 Gew.% Zink, maximal 0,10 Gew.% Mangan, maximal 0,05 Gew.% Kupfer, wobei Aluminium den Rest bildet und die Verunreinigungen einzeln maximal 0,03 Gew. %, insgesamt maximal 0,1 Gew.% ausmachen.
- 9.0 to 12.5% by weight of silicon, 0.1 to 0.45% by weight, in particular at least 0.3% by weight of magnesium and not more than 0.25% by weight, in particular not more than 0.15% by weight of iron 0.15% by weight of titanium, not more than 0.10% by weight of zinc, not more than 0.10% by weight of manganese, not more than 0.05% by weight of copper, with aluminum forming the remainder and the impurities individually a maximum of 0.03 % By weight, totaling at most 0.1% by weight.
Vorzugsweise wird als Basislegierung folgende Legierung verwendet:
- Si 9,0 - 12,5 Gew.%
- Fe 0,15 Gew.%
- Cu 0,02 Gew.%
- Mn 0,10 Gew.%
- Mg 0,10 - 0,45 Gew.%
- Zn 0,07 Gew.%
- Ti 0,15 Gew.%
- sowie A1 als Rest und Verunreinigungen einzeln maximal 0,03 Gew.%, insgesamt maximal 0,1 Gew.%. Das heißt, die bevorzugte Basislegierung entspricht einer Legierung nach DIN EN AB-43300, jedoch kann der Si-Gehalt statt 9,0 bis 10,0 Gew.% bei der Legierung nach dieser Norm erfindungsgemäß mehr als 10,0 Gew.% entsprechend dieser Norm erfindungsgemäß 0,10 - 0,45 Gew.% betragen.
- Si 9.0-12.5% by weight
- Fe 0.15% by weight
- Cu 0.02% by weight
- Mn 0.10% by weight
- Mg 0.10-0.45% by weight
- Zn 0.07% by weight
- Ti 0.15% by weight
- and A1 as the remainder and impurities individually a maximum of 0.03% by weight, in total not more than 0.1% by weight. That is, the preferred one Base alloy corresponds to an alloy according to DIN EN AB-43300, but the Si content instead of 9.0 to 10.0 wt.% In the alloy according to this standard according to the invention more than 10.0 wt.% According to this standard according to the invention 0.10 - 0.45 wt.% Be.
Die Basislegierung auch mit mehr als 10,0 Gew.% Silizium bzw. weniger als 0,30 Gew.% Magnesium wird als Gusslegierung im Handel angeboten. Die Basislegierung wird dann in die gewünschte Druckgusslegierung übergeführt. Dazu wird die Basislegierung geschmolzen und innig mit der Vorlegierung vermischt, und zwar in einer solchen Menge, dass eine AlSi9MgMnSr-Druckgusslegierung der gewünschten, nachstehend angegebenen Zusammensetzung entsteht:
- 9,5 bis 11,5 Gew.% Silizium,
- 0,3 bis 1,0, insbesondere 0,4 bis 0,8 Gew.% Mangan,
- 0,1 bis 0,6, insbesondere 0,3 bis 0,5 Gew.% Magnesium,
- max. 0,25 Gew.% Eisen,
- maximal 0,15, vorzugsweise maximal 0,10 Gew.% Titan,
- maximal 0,10, vorzugsweise maximal 0,08 Gew.% Zink,
- maximal 0,05 Gew.% Kupfer,
- 50 bis 300, insbesondere 150 bis 250 ppm Strontium sowie Aluminium als Rest und Verunreinigungen einzeln max. 0,03 Gew. %, insgesamt max. 0,1 Gew.%.
- 9.5 to 11.5 wt% silicon,
- From 0.3 to 1.0, in particular from 0.4 to 0.8,% by weight of manganese,
- 0.1 to 0.6, in particular 0.3 to 0.5 wt.% Magnesium,
- Max. 0.25% by weight iron,
- not more than 0.15, preferably not more than 0.10% by weight of titanium,
- not more than 0.10, preferably not more than 0.08% by weight of zinc,
- not more than 0.05% by weight of copper,
- 50 to 300, in particular 150 to 250 ppm strontium and aluminum as balance and impurities individually max. 0.03% by weight, in total max. 0.1% by weight.
Die Vorlegierung ist eine Aluminiumlegierung, die das restliche Mangan, das gesamte Strontium sowie ggf. Eisen und ggf. das restliche Magnesium der herzustellenden Aluminium-Legierung enthält, also eine AlMnSr-Legierung, die zusätzlich ggf. Fe und/oder Mg enthält, d. h. z. B. eine AlMnSrFe-, AlMnSrMg- oder AlMnSrFeMg-Legierung.The master alloy is an aluminum alloy which contains the remaining manganese, the entire strontium and optionally iron and possibly the remaining magnesium of the aluminum alloy to be produced, ie an AlMnSr alloy which optionally additionally contains Fe and / or Mg, ie B an AlMnSrFe, AlMnSrMg or AlMnSrFeMg alloy.
Der Mangan-Gehalt der Vorlegierung wird dabei derart gewählt, dass sich der Mangan-Gehalt in der herzustellenden Legierung in weiten Grenzen von 0,3 bis 1 Gew.% unter Berücksichtigung des Abbrandes in der Basislegierung einstellen lässt. Gleichermaßen wird der Strontium-Gehalt der Vorlegierung so gewählt, dass der Strontium-Gehalt in der herzustellenden Legierung 50 - 300, vorzugsweise 150 - 250 ppm beträgt.The manganese content of the master alloy is selected such that the manganese content in the alloy to be produced within wide limits of 0.3 to 1 wt.% Can be adjusted taking into account the burnup in the base alloy. Similarly, the strontium content of the master alloy is selected so that the strontium content in the alloy to be produced is 50-300, preferably 150-250 ppm.
Die so hergestellte Druckgusslegierung weist die gleichen Eigenschaften wie die handelsüblichen AlSi9MgMnSr-Druckgusslegierungen auf. Sie ist sowohl in gefügetechnischer Hinsicht wie in ihren dynamischen und statischen Eigenschaften den handelsüblichen AlSi9MgMnSr-Druckgusslegierungen zumindest gleichwertig.The die cast alloy thus produced has the same properties as the commercial AlSi9MgMnSr die cast alloys. It is at least equivalent to commercially available AlSi9MgMnSr die-cast alloys both in terms of joining technology and in terms of their dynamic and static properties.
Mit dem erfindungsgemäßen Verfahren ist es möglich, wirtschaftlich sinnvoll eine handelsübliche Basislegierung in eine hochwertige Druckgussvariante überzuführen, ohne metallurgische Probleme in Kauf zu nehmen. Die nach dem erfindungsgemäßen Verfahren hergestellte Druckgusslegierung ist insbesondere im Kraftfahrzeug- und Motorenbau hervorragend verwendbar.With the method according to the invention, it is possible to economically convert a commercially available base alloy into a high-quality die casting variant without accepting metallurgical problems. The die-cast alloy produced by the process according to the invention can be used particularly well in motor vehicle and engine construction.
Claims (2)
- A method for producing an aluminium alloy of the following composition:9.5 to 11.5 % by weight silicon,0.3 to 1.0 % by weight manganese,0.1 to 0.5 % by weight magnesium,max. 0.25 % by weight iron,max. 0.15 % by weight titanium,max. 0.10 % by weight zinc,max. 0.05 % by weight copper,50 to 300 ppm strontium, and
aluminium as the remainder and impurities individually max. 0.03 % by weight, in total max. 0.1 % by weight, characterised in that a molten aluminium-base alloy, has the following composition:9.0 to 12.5 % by weight silicon,0.1 to 0.45 % by weight magnesium,max. 0.25% by weight iron,max. 0.15 % by weight titanium,max. 0.10 % by weight zinc,max. 0.10 % by weight manganese,max. 0.05 % by weight copper,aluminium as the remainder and impurities individually max. 0.03 % by weight, in total max. 0.1 % by weight, is an aluminium master alloy, which contains the remaining manganese, the total strontium and optionally iron and optionally magnesium, in a quantity such that an aluminium alloy of the above composition is formed. - A method according to claim 1, characterised in that the aluminium alloy to be produced has 0.4 to 0.8 % by weight manganese, 0.3 to 0.5 % by weight magnesium and/or 150 to 250 ppm strontium.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710012424 DE102007012424A1 (en) | 2007-03-15 | 2007-03-15 | Process for producing an aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1972695A1 EP1972695A1 (en) | 2008-09-24 |
| EP1972695B1 true EP1972695B1 (en) | 2010-08-18 |
Family
ID=39365620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20080002908 Active EP1972695B1 (en) | 2007-03-15 | 2008-02-16 | Production process of an aluminium alloy |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1972695B1 (en) |
| DE (2) | DE102007012424A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9038704B2 (en) | 2011-04-04 | 2015-05-26 | Emerson Climate Technologies, Inc. | Aluminum alloy compositions and methods for die-casting thereof |
| CN102888541A (en) * | 2012-10-30 | 2013-01-23 | 季华 | Preparation method of aluminum-titanium alloy |
| CN110541094A (en) * | 2019-09-30 | 2019-12-06 | 中信戴卡股份有限公司 | Die-casting aluminum alloy and automobile part |
| CN115927926B (en) * | 2022-11-30 | 2024-01-30 | 重庆剑涛铝业有限公司 | High-plasticity aluminum alloy for vehicle body structure and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1608245B2 (en) * | 1967-09-21 | 1975-10-02 | Metallgesellschaft Ag, 6000 Frankfurt | Process for the production of master alloys containing strontium |
| DE69033755T2 (en) * | 1989-03-07 | 2002-05-29 | Aluminum Company Of America, Alcoa Center | Process and device for vacuum pressure casting |
| US4937044A (en) * | 1989-10-05 | 1990-06-26 | Timminco Limited | Strontium-magnesium-aluminum master alloy |
| CH689143A5 (en) * | 1994-06-16 | 1998-10-30 | Rheinfelden Aluminium Gmbh | Aluminum-silicon casting alloys with high corrosion resistance, particularly for safety components. |
| US20030143102A1 (en) * | 2001-07-25 | 2003-07-31 | Showa Denko K.K. | Aluminum alloy excellent in cutting ability, aluminum alloy materials and manufacturing method thereof |
| US20050199318A1 (en) * | 2003-06-24 | 2005-09-15 | Doty Herbert W. | Castable aluminum alloy |
-
2007
- 2007-03-15 DE DE200710012424 patent/DE102007012424A1/en not_active Withdrawn
-
2008
- 2008-02-16 EP EP20080002908 patent/EP1972695B1/en active Active
- 2008-02-16 DE DE200850001133 patent/DE502008001133D1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007012424A1 (en) | 2008-09-18 |
| EP1972695A1 (en) | 2008-09-24 |
| DE502008001133D1 (en) | 2010-09-30 |
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