WO2013037919A1 - HERSTELLVERFAHREN FÜR AlMgSi-ALUMINIUMBAND - Google Patents
HERSTELLVERFAHREN FÜR AlMgSi-ALUMINIUMBAND Download PDFInfo
- Publication number
- WO2013037919A1 WO2013037919A1 PCT/EP2012/068005 EP2012068005W WO2013037919A1 WO 2013037919 A1 WO2013037919 A1 WO 2013037919A1 EP 2012068005 W EP2012068005 W EP 2012068005W WO 2013037919 A1 WO2013037919 A1 WO 2013037919A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hot
- strip
- temperature
- rolled
- rolling
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
Definitions
- the invention relates to a method for producing a strip of AlMgSi alloy, in which a ingot of an AlMgSi alloy is cast, the ingot is subjected to homogenization, the hot rolled to rolled slab is rolled, then optionally cold rolled to final thickness and finished rolled band
- the invention relates to advantageous uses of a correspondingly produced AlMgSi aluminum strip.
- AlMgSi alloys for the production of hoods and other body parts of a motor vehicle particularly important. However, it restricts the choice of material with regard to the aluminum alloy.
- AlMgSi alloys whose main alloying constituents are magnesium and silicon have relatively high strengths in the T6 state while at the same time exhibiting good forming behavior in the T4 state and outstanding corrosion resistance.
- AlMgSi alloys are the alloy types AA6XXX, for example, the alloy types AA6016, AA6014, AA6181, AA6060 and AA6111.
- AlMgSi alloy aluminum tapes are produced by casting a roll bar, homogenizing the roll bar, hot rolling the roll bar and cold rolling the hot strip. The homogenisation of the rolling ingot takes place at a temperature of 380 to 580 ° C for more than one hour. By a final solution annealing at typical temperatures of 500 ° C to 570 ° C with
- the tapes can be delivered in state T4.
- the state T6 is set after quenching by thermal aging at temperatures between 100 ° C and 220 ° C.
- the problem is that coarse Mg 2 Si precipitates are present in hot-rolled aluminum strips of AlMgSi alloys, which are broken and reduced in the subsequent cold rolling by high degrees of deformation.
- Hot strips of AlMgSi alloy are usually produced in thicknesses of 3 mm to 12 mm and fed to a cold rolling with high degrees of deformation. Since the temperature range in which the AlMgSi phases form, is traversed very slowly in conventional hot rolling, these phases form very coarse.
- the temperature range for forming the above-mentioned phases is alloy-dependent. But it lies between 230 ° C and 550 ° C so in the range of hot rolling temperatures. It could
- EP 2 270 249 A1 which is assigned to the Applicant, it has been proposed that the AlMgSi alloy strip immediately after discharge from the last hot roll pass a
- Aluminum tapes are produced in the state T4, which in the state T4 has an elongation at break of A80 of more than 30% or a uniform elongation A g of more than 25%.
- very high elongation at break values were found in the T6 state. But it has been shown that this
- the present invention based on the object to provide an improved method for producing an aluminum strip of an AlMgSi alloy available, with which AlMgSi- aluminum strips can be produced with a very good forming behavior in the state T4 process reliable.
- the stated object of a method is achieved in that the hot strip immediately after leaving the last Hot rolling pass a temperature of more than 130 ° C,
- this cooling process takes place within the last two hot rolling passes, i. the
- Curing in state T6 can be achieved particularly reliably.
- a process-reliable cooling of the hot strip is achieved in that the hot strip using at least one sinker cooler and the emulsion
- a board cooler consists of a
- Blade cooler may be present in a hot rolling mill to cool rolled hot strip to rolling temperature prior to hot rolling and to achieve higher production speeds.
- Cooling process which preferably takes place within the last two rolling passes, at least 400 ° C,
- the temperature of the hot strip after the penultimate rolling pass is 290 ° C to 310 ° C. It has been found that these temperatures both allow a sufficient freezing of the precipitates and on the other hand at the same time the last pass can be carried out without problems. If the rolled hot strip at the outlet immediately after the last hot roll pass a temperature of 200 ° C to 230 ° C, an optimal process speed can be achieved during hot rolling without deteriorating the properties of the produced aluminum strip.
- the thickness of the finished hot strip is 3 mm to 12 mm, preferably 5 mm to 8 mm, so that conventional cold rolling stands for cold rolling can be used.
- the aluminum alloy used is from
- Alloy type AA6xxx preferably AA6014, AA6016, AA6060, AA6111 or AA6181.
- All alloy types AA6xxx have in common that they have a particularly good forming behavior characterized by high elongation values in the state T4 and high
- the finished rolled aluminum strip is a
- the aluminum strip after the solution annealing and quenching is heated to more than 100 ° C and then wound up at a temperature of more than 55 ° C, preferably more than 85 ° C and paged.
- This embodiment of the method after cold aging by a shorter heating phase at lower temperatures, allows to set the state T6 in the strip or sheet in which the sheet-formed or strip-formed components are used in the application.
- These fast-curing aluminum strips are for this purpose only to temperatures of about 185 ° C for only 20 min. heated to reach the higher yield limits in state T6.
- the aluminum strip produced according to the invention is characterized in the state T4 after aging
- a g is the maximum elongation of the sample at which no constriction of the sample is observed during the tensile test. The sample is thus stretched evenly in the region of the uniform expansion.
- An aluminum alloy of the type AA6016 has the following
- the strength of the aluminum strip is suitable for magnesium contents of less than 0.25% by weight.
- Aluminum alloy responsible and thus also for the high strength, which can be achieved in the application, for example after a Lackiereinbumble.
- Si contents of less than 1.0 wt .-% the hardenability of the aluminum strip is reduced, so that only reduced strength can be provided in the application.
- Si contents of more than 1.5% by weight do not lead to an improvement in the curing behavior of the alloy.
- the Fe content should be limited to a maximum of 0.5% by weight to coarse
- Copper content to a maximum of 0.2 wt .-% leads above all to improved corrosion resistance of the aluminum alloy in the specific application.
- the manganese content of less than 0.2% by weight reduces the tendency to form coarser manganese precipitates.
- chromium ensures a fine microstructure, it should be limited to 0.1% by weight in order to avoid coarse precipitation.
- a reduction of the zinc content to a maximum of 0.1% by weight improves in particular the corrosion resistance of the aluminum alloy or of the finished sheet in the respective application.
- titanium provides grain refining during casting, but should be limited to a maximum of 0.1% by weight for a good grain size
- An aluminum alloy of the type AA6060 has the following
- inventive method can be prevented, so that a sheet having an improved elongation and high
- An aluminum alloy of the type AA6014 has the following
- An aluminum alloy of type AA6181 has the following
- An aluminum alloy of type AA6111 has the following
- tapes made of these aluminum alloys which were produced using the method according to the invention, exhibit particularly high uniform expansion values in the condition T4 coupled with a particularly pronounced increase in the yield strength
- Chassis part outer or inner panel in the automotive industry, preferably as a body component solved. Above all, visible body parts, such as hoods,
- Fenders, etc. as well as the outer skin parts of a rail vehicle or airplane benefit from the high yield strengths Rp0.2 with good surface properties even after forming with high degrees of deformation.
- an aluminum alloy produced according to the invention which is subjected to a solution annealing with subsequent heat treatment after its production.
- state T4 it has, as already stated, a uniform elongation A g of more than 25%, for example, at a yield strength Rp0.2 of 80 to 140 MPa.
- a fast-hardening AlMgSi alloy strip which can also be easily formed at the same time, can be made available.
- the heat aging to reach the state T6 can be 185 ° C for 20 min., To the required To achieve stretching limit increases.
- An aluminum alloy strip produced according to the invention has, according to a next embodiment
- Uniform expansion A g of more than 25% in the rolling direction, transverse to the rolling direction and diagonally to the rolling direction, so that a particularly isotropic forming capacity are possible.
- Aluminum strips have a thickness of 0.5 mm to 12 mm.
- Aluminum strips with thicknesses of 0.5 mm to 2 mm are
- body parts for example in
- Automotive used while aluminum strips with greater thicknesses of 2 to 4.5 mm, for example, in
- Individual components can also be manufactured in a cold-rolled strip with a thickness of up to 6 mm.
- aluminum strips with thicknesses of up to 12 mm can be used. These very thick aluminum strips are usually provided only by hot rolling.
- a method according to the invention for producing a strip of a MgSi-aluminum alloy comprising the steps of a) producing and homogenizing the rolling ingot, b) hot rolling, c)
- the rolled ingot thus produced is at a
- Homogenization temperature of about 550 ° C for 8 h
- Fig lb is shown as the rolling ingot 1 in the present embodiment of the invention
- the hot strip 4 is hot rolled, wherein the ingot 1 has a temperature of 400 to 550 ° C during hot rolling.
- the hot strip 4 after leaving the hot rolling mill 3 and before the penultimate hot rolling pass, the hot strip 4
- the hot strip is cooled here to a temperature of 290 ° C to 310 ° C before the last hot rolling pass. For this sprays the
- Platinum cooler 5 shown only schematically, the hot strip 4 with cooling rolling emulsion and ensures an accelerated cooling of the hot strip 4 on the latter
- the work rolls of the hot rolling stand 3 are also subjected to emulsion and cool the hot strip 4 in the last hot roll pass down further.
- the hot strip 4 at the outlet of the sinker cooler 5 'in the present embodiment has a temperature of 200 ° C to 230 ° C and is then on the
- the hot strip 4 directly at the outlet of the last hot roll pass a temperature of more than 135 ° C to 250 ° C, preferably 200 ° C to 230 ° C has or
- Winding temperature to a frozen crystal structure state which leads to very good uniform expansion properties A g of more than 25% in the state T4. It can still be processed faster and better due to the higher winding temperature.
- the hot strip with a thickness of 3 to 12 mm, preferably 5 to 8 mm is wound on the take-up reel 6. As already stated, is the
- the aluminum strip 11 can be singulated into individual sheets, which are present after a cold aging in the state T4.
- Chassis applications or components such as brake anchor plates may alternatively be performed piece annealing and the sheets are then quenched.
- the aluminum strip or the aluminum sheet is brought by cold aging at 100 ° C to 220 ° C in order to achieve maximum values for the yield strength. For example, a thermal aging even at 205 ° C / 30 min.
- the aluminum strips produced according to the illustrated embodiment for example, have a thickness of 0.5 to 4.5 mm after cold rolling. Tape thicknesses of 0.5 to 2 mm are usually for bodywork applications or
- the aluminum strips contain aluminum and impurities as a residual proportion, individually not more than 0.05% by weight and in total not more than 0.15% by weight.
- Hot strip within the last two hot rolling passes from about 470 ° C to 490 ° C to 135 ° C to 250 ° C using a Board cooler and the hot rolling itself cooled and wound up.
- Table 2 the measured values of these tapes are marked "Inv.”
- Cold rolling to a final thickness of 0.865 mm.
- the T6 state was achieved by cold aging followed by aging at 205 ° C for 30 minutes.
- the uniform elongation A g increased from 23.0% to a maximum of 26.6% across the rolling direction in the According to the invention produced bands compared to the conventionally produced tapes.
- the microstructure set with the method according to the invention leads to the particularly advantageous combination of high uniform elongation A g of more than 25% at very high values for the yield strength Rp0.2 of 80 to 140 MPa.
- the yield strength Rp0.2 increases to at least 185 MPa, with the uniform elongation A g still remaining at more than 12%.
- the curability with an ARPO, 2 of 97 and 107 MPa is still very good in the tapes produced according to the invention.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014530230A JP5699255B2 (ja) | 2011-09-15 | 2012-09-13 | AlMgSi系アルミニウムストリップの製造方法 |
CA2848457A CA2848457C (en) | 2011-09-15 | 2012-09-13 | Method for manufacturing almgsi aluminium strip |
KR1020157031267A KR101974624B1 (ko) | 2011-09-15 | 2012-09-13 | Almgsi 알루미늄 스트립 제조 방법 |
RU2014114792/02A RU2576976C2 (ru) | 2011-09-15 | 2012-09-13 | СПОСОБ ПРОИЗВОДСТВА AlMgSi ПОЛОСЫ |
KR1020147009878A KR20140057666A (ko) | 2011-09-15 | 2012-09-13 | Almgsi 알루미늄 스트립 제조 방법 |
CN201280044926.XA CN103842550B (zh) | 2011-09-15 | 2012-09-13 | AlMgSi铝带的制造方法 |
US14/205,645 US20150152535A2 (en) | 2011-09-15 | 2014-03-12 | Method for manufacturing AlMgSi aluminium strip |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11181519.7A EP2570509B1 (de) | 2011-09-15 | 2011-09-15 | Herstellverfahren für AlMgSi-Aluminiumband |
EP11181519.7 | 2011-09-15 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/205,645 Continuation US20150152535A2 (en) | 2011-09-15 | 2014-03-12 | Method for manufacturing AlMgSi aluminium strip |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013037919A1 true WO2013037919A1 (de) | 2013-03-21 |
Family
ID=46851493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/068005 WO2013037919A1 (de) | 2011-09-15 | 2012-09-13 | HERSTELLVERFAHREN FÜR AlMgSi-ALUMINIUMBAND |
Country Status (10)
Country | Link |
---|---|
US (1) | US20150152535A2 (de) |
EP (1) | EP2570509B1 (de) |
JP (1) | JP5699255B2 (de) |
KR (2) | KR20140057666A (de) |
CN (1) | CN103842550B (de) |
CA (1) | CA2848457C (de) |
ES (1) | ES2459307T3 (de) |
PT (1) | PT2570509E (de) |
RU (1) | RU2576976C2 (de) |
WO (1) | WO2013037919A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011000635A1 (de) | 2009-06-30 | 2011-01-06 | Hydro Aluminium Deutschland Gmbh | Almgsi-band für anwendungen mit hohen umformungsanforderungen |
WO2022263782A1 (fr) | 2021-06-17 | 2022-12-22 | Constellium Neuf-Brisach | Bande en alliage 6xxx et procede de fabrication |
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DE102013221710A1 (de) | 2013-10-25 | 2015-04-30 | Sms Siemag Aktiengesellschaft | Aluminium-Warmbandwalzstraße und Verfahren zum Warmwalzen eines Aluminium-Warmbandes |
AU2016206897B2 (en) * | 2015-01-12 | 2019-01-17 | Novelis Inc. | Highly formable automotive aluminum sheet with reduced or no surface roping and a method of preparation |
ES2700140T3 (es) | 2015-06-25 | 2019-02-14 | Hydro Aluminium Rolled Prod | Banda de AlMg de alta resistencia y adecuadamente conformable así como procedimiento para su fabricación |
CA2961443C (en) | 2015-07-20 | 2018-03-20 | Novelis Inc. | Aa6xxx aluminum alloy sheet with high anodized quality and method for making same |
CA3008021C (en) * | 2016-01-08 | 2020-10-20 | Arconic Inc. | 6xxx aluminum alloys, and methods of making the same |
CN110621797A (zh) | 2017-05-11 | 2019-12-27 | 阿莱利斯铝业迪弗尔私人有限公司 | 具有优异成型性的Al-Si-Mg合金轧制片材产品的制造方法 |
US10030295B1 (en) | 2017-06-29 | 2018-07-24 | Arconic Inc. | 6xxx aluminum alloy sheet products and methods for making the same |
DE102020123740A1 (de) | 2020-09-11 | 2022-03-17 | Speira Gmbh | Verfahren und Vorrichtung zur elektrostatischen Beschichtung von Metallbändern |
EP4190932A1 (de) * | 2021-12-01 | 2023-06-07 | Constellium Bowling Green LLC | Bleche, platten oder zuschnitte aus einer aluminiumlegierung der serie 6xxx mit verbesserter formbarkeit |
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EP2270249A1 (de) | 2009-06-30 | 2011-01-05 | Hydro Aluminium Deutschland GmbH | AlMgSi-Band für Anwendungen mit hohen Umformungsanforderungen |
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-
2011
- 2011-09-15 PT PT111815197T patent/PT2570509E/pt unknown
- 2011-09-15 ES ES11181519.7T patent/ES2459307T3/es active Active
- 2011-09-15 EP EP11181519.7A patent/EP2570509B1/de not_active Revoked
-
2012
- 2012-09-13 CA CA2848457A patent/CA2848457C/en active Active
- 2012-09-13 KR KR1020147009878A patent/KR20140057666A/ko active Search and Examination
- 2012-09-13 RU RU2014114792/02A patent/RU2576976C2/ru active
- 2012-09-13 JP JP2014530230A patent/JP5699255B2/ja active Active
- 2012-09-13 WO PCT/EP2012/068005 patent/WO2013037919A1/de active Application Filing
- 2012-09-13 CN CN201280044926.XA patent/CN103842550B/zh active Active
- 2012-09-13 KR KR1020157031267A patent/KR101974624B1/ko active IP Right Grant
-
2014
- 2014-03-12 US US14/205,645 patent/US20150152535A2/en not_active Abandoned
Patent Citations (4)
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WO1996007768A1 (en) * | 1994-09-06 | 1996-03-14 | Alcan International Limited | Heat treatment process for aluminum alloy sheet |
DE102008004163A1 (de) * | 2007-01-18 | 2008-07-24 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), Kobe | Blech aus einer Aluminiumlegierung |
US20110017370A1 (en) * | 2008-03-31 | 2011-01-27 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd,) | Aluminum alloy sheet with excellent post-fabrication surface qualities and method of manufacturing same |
EP2270249A1 (de) | 2009-06-30 | 2011-01-05 | Hydro Aluminium Deutschland GmbH | AlMgSi-Band für Anwendungen mit hohen Umformungsanforderungen |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011000635A1 (de) | 2009-06-30 | 2011-01-06 | Hydro Aluminium Deutschland Gmbh | Almgsi-band für anwendungen mit hohen umformungsanforderungen |
US10047422B2 (en) | 2009-06-30 | 2018-08-14 | Hydro Aluminium Deutschland Gmbh | AlMgSi strip for applications having high formability requirements |
EP2449145B1 (de) * | 2009-06-30 | 2019-08-07 | Hydro Aluminium Rolled Products GmbH | AlMgSi-Band für Anwendungen mit hohen Umformungsanforderungen |
US10612115B2 (en) | 2009-06-30 | 2020-04-07 | Hydro Aluminium Deutschland Gmbh | AlMgSi strip for applications having high formability requirements |
EP2270249B2 (de) † | 2009-06-30 | 2020-05-27 | Hydro Aluminium Deutschland GmbH | AlMgSi-Band für Anwendungen mit hohen Umformungsanforderungen |
WO2022263782A1 (fr) | 2021-06-17 | 2022-12-22 | Constellium Neuf-Brisach | Bande en alliage 6xxx et procede de fabrication |
FR3124196A1 (fr) | 2021-06-17 | 2022-12-23 | Constellium Neuf-Brisach | Bande en alliage 6xxx et procédé de fabrication |
Also Published As
Publication number | Publication date |
---|---|
KR20150126975A (ko) | 2015-11-13 |
ES2459307T3 (es) | 2014-05-08 |
CN103842550B (zh) | 2017-05-03 |
JP2014532114A (ja) | 2014-12-04 |
RU2576976C2 (ru) | 2016-03-10 |
KR20140057666A (ko) | 2014-05-13 |
CA2848457C (en) | 2016-10-04 |
CN103842550A (zh) | 2014-06-04 |
EP2570509A1 (de) | 2013-03-20 |
JP5699255B2 (ja) | 2015-04-08 |
EP2570509B1 (de) | 2014-02-19 |
PT2570509E (pt) | 2014-04-30 |
KR101974624B1 (ko) | 2019-05-02 |
RU2014114792A (ru) | 2015-10-20 |
US20150152535A2 (en) | 2015-06-04 |
US20140190595A1 (en) | 2014-07-10 |
CA2848457A1 (en) | 2013-03-21 |
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