EP1098009A2 - Aluminiumknetlegierung des Typs AlMgSi mit Sn und Mn - Google Patents
Aluminiumknetlegierung des Typs AlMgSi mit Sn und Mn Download PDFInfo
- Publication number
- EP1098009A2 EP1098009A2 EP00121632A EP00121632A EP1098009A2 EP 1098009 A2 EP1098009 A2 EP 1098009A2 EP 00121632 A EP00121632 A EP 00121632A EP 00121632 A EP00121632 A EP 00121632A EP 1098009 A2 EP1098009 A2 EP 1098009A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- aluminum alloy
- wrought aluminum
- maximum
- alloy
- 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
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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- 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
Definitions
- the invention relates to a wrought aluminum alloy of the AlMgSi type for high-performance machining.
- Aluminum alloys of this type are used as high performance machining materials used because these place particularly high demands on machinability is sufficient. They are therefore also known as machine alloys.
- Pb Lead
- a disadvantage of alloying lead to achieve this desired the property is the health hazard posed by this element, especially for those who have such a workpiece to edit.
- the lead content has a negative effect on the Creep behavior of the aluminum alloy, so that the workpieces or the products made from it at higher temperatures are only conditional can be used.
- Such machine alloys are from CH 239 996 and from FR 977 514 known.
- the alloys described in these documents In addition to lead, elements that promote chip breakage can also be beneficial contain: tin (Sn), bismuth (Bi), cadmium (Cd) or thallium (Tl), which alone or in a mixture also with lead together with proportions between 0.3 and 4 wt .-% can be involved in the structure of the alloy.
- such alloys have actually been used very significant proportions of these elements, as is also shown from the Embodiment of CH 239 996 can be seen in which more than 2 wt .-% of a chip-promoting additive used is namely lead alone with a proportion of 2.56% by weight.
- cadmium or thallium is also undesirable because the environmental compatibility of these elements is sometimes not without problems is or are costly.
- alloy components that improve the mechanical Properties of the alloy used are the metals Copper (Cu), nickel (Ni) or zinc (Zn) provided in proportions of contain a maximum of 6 or 4 or 10% by weight in the known alloys could be.
- Cu Copper
- Ni nickel
- Zn zinc
- lead is fundamentally a very suitable one Element for achieving the desired machinability.
- AlMgSi alloys have been proposed been used instead of the lead element to achieve the desired Machinability properties include tin.
- Such alloys are, for example, in US 5 810 952 A or in US 5 776 269 A. Additional component of these alloys in addition to tin is bismuth, which is used as an element to improve machinability to optimize. So such a lead-free AlMgSi alloy has sufficient strength, copper contents are between 0.3 and 0.4 wt .-% alloyed.
- AA 6020 registered, hardenable alloy Copper essential component intended to increase strength. The copper content can be between 0.3 and 0.9% by weight. This alloy has a tin content between 0.9 and 1.5% by weight.
- the invention is based on the state of the art discussed therefore based on the task of a lead-free wrought aluminum alloy Type AlMgSi with a strength and machinability accordingly to provide the known machine alloys, their manufacturability is improved, and especially in an extrusion has a larger temperature-related processing window.
- the invention provides a wrought aluminum alloy which not just an unusually small amount - namely only 0.6 to 1.5 %
- By weight - of an element which favors machining and yet the same and in some cases even improved cutting properties has, but only a single element as one Machining-favoring element - contrary to the previously known proposals, where in addition to this element other elements regularly have been added - contains.
- the use of tin is the only one Chip breaking is a key element in terms of its environmental compatibility harmless. Because in the known machine alloys several elements that favor machining in larger ones Shares were not included in the light of this prior art to be expected that the alloy according to the invention with the defined Narrow share intervals of the elements used such positive cutting properties would have.
- the wrought aluminum alloy according to the invention has compared to the Known wrought aluminum alloys, a lot in extrusion larger temperature related working window, so that with this Wrought aluminum alloy solution heat treatment in the heat of pressing can.
- This property can also be the prior art can not be removed at any point.
- in the light of State of the art not to expect the alloy at a low Press temperature could be processed. Therefore there is also a downstream one Solution annealing with the resulting disadvantages avoided.
- solution annealing with the alloy according to the invention can be done in the heat of extrusion, can by extrusion manufactured objects in their full length subjected to the stretching process are and do not need - as with the known state of the art Technology - be cut into pieces that fit into a solution annealing furnace. Consequently, the number of useless stretchers is at one such manufacturing processes as with the alloy according to the invention possible, significantly reduced.
- the extrusion process necessary pressing temperature considerably among those for the previously known copper-containing wrought aluminum alloys are necessary.
- the necessary pressing temperature is around 30 - 50 ° C reduced compared to copper-containing AlMgSi alloys.
- the temperature-related work window is larger, so that not only a solution heat treatment in the heat of pressing in a larger temperature range can be done, but also makes a faster extrusion as well as an extended quenching delay.
- make these advantages is also involved in a forging or rolling process Workpiece made of such a wrought aluminum alloy, noticeable.
- the claimed wrought aluminum alloy compares better with that of the prior art Corrosion resistance.
- An aluminum wrought alloy of the type AlMgSi has produced parts by weight, which not only have excellent properties in terms of their Machinability and its strength, but also special inexpensive, especially in extrusion processing can. Above all, the exclusion of copper as an alloy component, the is deliberately not integrated into the alloy and only as an impurity tolerated, allows an extrusion product with solution heat treatment in which press heat and press quenching are manufactured can. A machine alloy is thus provided, which is not only particularly economical in their production but also in their processing is.
- the elements iron are only inevitable impurities, Copper and zinc without impairing the determined alloy properties tolerated up to certain proportions in the alloy. Higher On the other hand, contents impair the desired alloy properties. However, these elements do not need to be part of the alloy to be.
- the alloys Stanal 32 ", AA6020 “and KA62 “ were produced by the so-called T6 process and the separate solution annealing step contained therein. The remaining alloys were produced by the T5 process with solution annealing in the press heat. From the comparison above it is clear that the machining behavior of objects produced from an alloy according to the invention is excellent and corresponds to that which could previously only be achieved with lead-containing AlMgSi alloys, in particular it should also be noted that the copper-containing AlMgSi alloys have been subjected to a separate solution annealing step before the heat-hardening step to at least partially achieve the same cutting behavior as an article made from an alloy according to the invention.
Abstract
Description
- 0,6 bis 2,0 Gew.-% Magnesium (Mg),
- 0,6 bis 3,0 Gew.-% Silizium (Si),
- 0,6 bis 1,5 Gew.-% Zinn (Sn),
- 0,4 bis 1,0 Gew.-% Mangan (Mn),
- 1,0 bis 1,2 Gew.-% Magnesium,
- 0,8 bis 1,0 Gew.-% Silizium,
- 0,9 bis 1,1 Gew.-% Zinn und
- 0,6 bis 0,8 Gew.-% Mangan.
- 1,1 Gew.-% Magnesium,
- 0,95 Gew.-% Silizium,
- 1,1 Gew.-% Zinn,
- 0,65 Gew.-% Mangan,
- 0,19 Gew.-% Eisen
- Rest Aluminium,
- alle weiteren Elemente in ihrer Summe kleiner 0,05 Gew.-%
Eine zweite Probe mit demselben Blockformat derselben Legierung wurde bei einer Blocktemperatur von 530 - 540°C nach dem Guß homogenisiert und mit unmittelbarer Wasserabschreckung bei einer Mindesttemperatur von 530 - 540°C verpreßt, wobei auch bei dieser Probe der Schritt des Lösungsglühens durch die beim Verpressen notwendige Wärme automatisch mit durchgeführt worden ist. Anschließend wurde dieses Profil ebenfalls bei 170°C auf seine höchste Härte warm ausgelagert. Bei dieser Probe wurde eine 0,2%-Streckgrenze Rp0,2 von 348 Mpa, eine Zugfestigkeit Rm von 371 Mpa und eine Bruchdehnung A5 von 10 % ermittelt. Die nachfolgende Tabelle zeigt die Untersuchungsergebnisse zusammengefaßt und im Vergleich zu denjenigen einer vorbekannten Aluminiumknetlegierung:
Fertigungsparameter | Zugversuchskennwerte | |||||
Strangpresstemperatur [°C] | Strangpressgeschwindigkeit [m/min] | separates Lösungsglühen | Rp0,2 [MPa] | Rm [MPa] | A5 [%] | |
AlMgSi1Cu0,5 (AA6110A) | 510 | 6 | nein | 275 | 305 | 12 |
540 | 3 | nein | 314 | 338 | 12 | |
500 | 6 | ja | 352 | 372 | 12 | |
Probe 1 | 510 | 6 | nein | 345 | 367 | 10 |
Probe 2 | 540 | 3 | nein | 348 | 371 | 10 |
Zerspanungsverhalten beim | ||||||
Fräsen | Bohren | Senken | Gewindeherstellung | Sägen | Drehen | |
AlMgSi0,5 | C | D | B | C | A | C |
AlMgSi1 | B | C | B | B | A | B |
AlMgSiCuSnBi (Stanal 32) | A | A | A | A | A | A |
AlMgSiCuSn (AA6020) | A | A | A | A | A | A |
AlMgSiCuSnBi (KA62) | B | B | B | B | B | B |
AlMgSi1Pb1,4 | A | A | A | A | A | A |
AlMgSi1Sn0,8 Proben 1, 2 | A | A | A | A | A | A |
Bewertungsstufen: A = sehr gut bis D = sehr schlecht |
Claims (11)
- Aluminiumknetlegierung des Typs AlMgSi, gekennzeichnet durch folgende Anteile seiner Hauptlegierungsbestandteile:0,6 bis 2,0 Gew.-% Magnesium (Mg),0,6 bis 3,0 Gew.-% Silizium (Si),0,6 bis 1,5 Gew.-% Zinn (Sn),0,4 bis 1,0 Gew.-% Mangan (Mn),
- Aluminiumknetlegierung nach Anspruch 1, dadurch gekennzeichnet, daß die unvermeidbaren Verunreinigungen elementbezogen einen Anteil von jeweils maximal 0,05 Gew.-% nicht überschreiten.
- Aluminiumknetlegierung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Magnesium-Anteil 1,0 bis 1,2 Gew.-% beträgt.
- Aluminiumknetlegierung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Silizium-Anteil 0,8 bis 1,0 Gew.-% beträgt.
- Aluminiumknetlegierung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Zinn-Anteil 0,9 bis 1,1 Gew.-% beträgt.
- Aluminiumknetlegierung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Mangan-Anteil 0,6 bis 0,8 Gew.-% beträgt.
- Aluminiumknetlegierung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß Chrom-Anteil maximal 0,1 Gew.-% beträgt.
- Verwendung einer Aluminiumknetlegierung des Typs AlMgSi nach einem der Ansprüche 1 bis 7 zum Herstellen stranggepreßter Produkte.
- Verwendung nach Anspruch 8, dadurch gekennzeichnet, daß das stranggepreßte Produkt beim Strangpressen unnmittelbar im Bereich des Austritts aus dem Werkzeug abgeschreckt wird.
- Verfahren zum Herstellen eines strangegepreßten Gegenstandes aus einer Aluminiumknetlegierung des Typs AlMgSi nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß während des Vorganges des Strangpressens in der Preßwärme ein Lösungsglühen erfolgt und daß nach einem Austritt des stranggepreßten Gegenstandes aus dem Preßwerkzeuges der stranggepreßte Gegenstand abgeschreckt wird und daß nachfolgend der stranggepreßte Gegenstand dem Vorgang des Warmaushärtens unterworfen wird.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß nach dem Austritt des Gegenstandes aus dem Preßwerkzeug dieser zunächst an Luft bis auf eine Temperatur von etwa 460 - 485°C abgekühlt wird, bevor der Schritt des Abschreckens vorgenommen wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19953212 | 1999-11-05 | ||
DE19953212A DE19953212A1 (de) | 1999-11-05 | 1999-11-05 | Aluminiumknetlegierung |
Publications (4)
Publication Number | Publication Date |
---|---|
EP1098009A2 true EP1098009A2 (de) | 2001-05-09 |
EP1098009A3 EP1098009A3 (de) | 2001-05-30 |
EP1098009B1 EP1098009B1 (de) | 2002-07-03 |
EP1098009B2 EP1098009B2 (de) | 2008-09-24 |
Family
ID=7927977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00121632A Expired - Lifetime EP1098009B2 (de) | 1999-11-05 | 2000-10-04 | Verfahren zur Herstellung einer Aluminiumknetlegierung des Typs AlMgSi mit Sn und Mn |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1098009B2 (de) |
JP (1) | JP2001181770A (de) |
KR (1) | KR100512154B1 (de) |
AT (1) | ATE220122T1 (de) |
AU (1) | AU6966400A (de) |
DE (2) | DE19953212A1 (de) |
ES (1) | ES2178998T3 (de) |
PT (1) | PT1098009E (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103805817A (zh) * | 2012-11-13 | 2014-05-21 | 现代摩比斯株式会社 | 具有高加工性的AlMgSi系铝合金、其制造方法及由此制造的汽车配件 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100099554A (ko) * | 2009-03-03 | 2010-09-13 | 현대모비스 주식회사 | 고가공성을 갖는 Al―SⅰMg계 알루미늄 합금 및 그의 제조방법 |
KR101103290B1 (ko) * | 2011-09-29 | 2012-01-11 | 주식회사동양강철 | 강도와 가공성이 우수한 압출 성형용 알루미늄 합금 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH239996A (fr) * | 1942-07-30 | 1945-11-30 | Alais & Froges & Camarque Cie | Alliage d'aluminium, propre au décolletage et à l'estampage. |
FR977514A (fr) * | 1942-07-30 | 1951-04-02 | Alais & Froges & Camarque Cie | Alliage pour le décolletage et l'estampage |
JPH07197163A (ja) * | 1993-11-24 | 1995-08-01 | Showa Denko Kk | 冷間鍛造用アルミニウム合金 |
WO1996008586A1 (en) † | 1994-09-16 | 1996-03-21 | Aluminum Company Of America | Lead-free 6xxx aluminum alloy |
WO2000037697A1 (en) † | 1998-12-22 | 2000-06-29 | Impol, Industrija Metalnih Polizdelkov, D.D. | Aluminum free-cutting alloy, processes for the production thereo f and use thereof |
-
1999
- 1999-11-05 DE DE19953212A patent/DE19953212A1/de not_active Withdrawn
-
2000
- 2000-10-04 DE DE50000260T patent/DE50000260D1/de not_active Expired - Lifetime
- 2000-10-04 AT AT00121632T patent/ATE220122T1/de not_active IP Right Cessation
- 2000-10-04 EP EP00121632A patent/EP1098009B2/de not_active Expired - Lifetime
- 2000-10-04 ES ES00121632T patent/ES2178998T3/es not_active Expired - Lifetime
- 2000-10-04 PT PT00121632T patent/PT1098009E/pt unknown
- 2000-11-01 AU AU69664/00A patent/AU6966400A/en not_active Abandoned
- 2000-11-02 JP JP2000336228A patent/JP2001181770A/ja active Pending
- 2000-11-03 KR KR10-2000-0065135A patent/KR100512154B1/ko not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH239996A (fr) * | 1942-07-30 | 1945-11-30 | Alais & Froges & Camarque Cie | Alliage d'aluminium, propre au décolletage et à l'estampage. |
FR977514A (fr) * | 1942-07-30 | 1951-04-02 | Alais & Froges & Camarque Cie | Alliage pour le décolletage et l'estampage |
JPH07197163A (ja) * | 1993-11-24 | 1995-08-01 | Showa Denko Kk | 冷間鍛造用アルミニウム合金 |
WO1996008586A1 (en) † | 1994-09-16 | 1996-03-21 | Aluminum Company Of America | Lead-free 6xxx aluminum alloy |
WO2000037697A1 (en) † | 1998-12-22 | 2000-06-29 | Impol, Industrija Metalnih Polizdelkov, D.D. | Aluminum free-cutting alloy, processes for the production thereo f and use thereof |
Non-Patent Citations (4)
Title |
---|
"Research Disclosure", Nummer 39777, Mai 1997, S. 348 und Index, veröffentlicht von Hoogovens Aluminium NV † |
Auftragbestätigung von Niagara Leadfree vom 26/08/96, Order-Nr. 19669-03, (Position 3: Alu Rod 6012 (Sn instead of Pb) T9 ASTM B211) und Hersteller-Zertifikat (mill certificate) für Nr. 19669-03, erstellt am 20.08.1996 † |
Hatch J. E., "ALUMINUM, Properties and Physical Metallurgy", American Society for Metals, 5. Auflage, Januar 1993, S. 137 † |
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11, 26. Dezember 1995 (1995-12-26) -& JP 07 197163 A (SHOWA DENKO KK), 1. August 1995 (1995-08-01) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103805817A (zh) * | 2012-11-13 | 2014-05-21 | 现代摩比斯株式会社 | 具有高加工性的AlMgSi系铝合金、其制造方法及由此制造的汽车配件 |
Also Published As
Publication number | Publication date |
---|---|
EP1098009B2 (de) | 2008-09-24 |
JP2001181770A (ja) | 2001-07-03 |
ES2178998T3 (es) | 2003-01-16 |
DE50000260D1 (de) | 2002-08-08 |
KR20010070185A (ko) | 2001-07-25 |
EP1098009A3 (de) | 2001-05-30 |
ATE220122T1 (de) | 2002-07-15 |
DE19953212A1 (de) | 2001-05-31 |
EP1098009B1 (de) | 2002-07-03 |
AU6966400A (en) | 2001-05-10 |
KR100512154B1 (ko) | 2005-09-05 |
PT1098009E (pt) | 2002-11-29 |
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