EP4253585A1 - Procédé de fabrication d'une tôle ou d'une bande et tôle ou bande ainsi fabriquée - Google Patents
Procédé de fabrication d'une tôle ou d'une bande et tôle ou bande ainsi fabriquée Download PDFInfo
- Publication number
- EP4253585A1 EP4253585A1 EP22165279.5A EP22165279A EP4253585A1 EP 4253585 A1 EP4253585 A1 EP 4253585A1 EP 22165279 A EP22165279 A EP 22165279A EP 4253585 A1 EP4253585 A1 EP 4253585A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- sheet
- rolling
- hot
- final
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 title claims description 6
- 239000002184 metal Substances 0.000 title claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 24
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- 238000005097 cold rolling Methods 0.000 claims description 33
- 238000000137 annealing Methods 0.000 claims description 29
- 238000005098 hot rolling Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- 239000011777 magnesium Substances 0.000 claims description 16
- 239000002244 precipitate Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 7
- 230000000171 quenching effect Effects 0.000 claims description 7
- 238000005554 pickling Methods 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 238000001953 recrystallisation Methods 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910019018 Mg 2 Si Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052733 gallium Inorganic materials 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 230000008092 positive effect Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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
- C22F1/047—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 magnesium 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
- C22C21/06—Alloys based on aluminium with magnesium 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
- C22C21/06—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
Definitions
- the invention relates to a method for producing a sheet or strip and a sheet or strip produced therewith.
- optical scattering centers for example foreign phases in the oxide layer, must be reduced so that the directed light reflection responsible for the degree of gloss can take place unimpaired. This is particularly true for scattering centers whose size is comparable to or larger than the wavelength of visible light (400 to 750 nm).
- EP3011067B1 proposes to reduce fine Mg 2 Si precipitates formed during the manufacturing process by means of intermediate annealing and subsequent cooling during cold rolling. This intermediate annealing takes place between the solvus temperature of the precipitates and the melting temperature of the aluminum alloy.
- the invention has therefore set itself the task of changing the method of the type described at the beginning in such a way that both the degree of gloss and its durability are further improved in the case of a sheet or strip made of a 5xxx aluminum alloy.
- the invention solves the problem set with regard to the method through the features of claim 1.
- Mg-containing precipitates can be acted upon before cold rolling.
- quenching takes place to a temperature below the precipitation temperature of Mg-containing precipitates.
- quenching takes place with an average cooling rate of at least 10 °C/s, for example at least 50 °C/s.
- the grains of the aluminum matrix are significantly stretched, resulting in higher corrosion resistance due to increased path length for intergranular corrosion - this in turn can have a positive effect on the stability of the gloss level.
- the intermediate annealing in combination with the comparatively high degree of cold rolling results in an improved and more stable level of gloss or improved corrosion resistance on the sheet or strip.
- the above can be further improved if the cold rolling is carried out with a cold rolling degree ⁇ 75% of the final hot strip thickness to the final thickness.
- this is provided in several stitches and may optionally include a pickling step as an intermediate step between these stitches.
- the method according to the invention includes a final annealing of the cold-rolled sheet or strip with a second holding temperature ⁇ recrystallization temperature of the aluminum alloy.
- the first holding temperature is preferably in the range from ⁇ 400 ° C to ⁇ 600 ° C, so that essentially all Mg-containing precipitates are dissolved in the aluminum alloy. This can be achieved in particular if the first holding temperature of the intermediate annealing is in the range from 450 °C to 560 °C.
- the intermediate annealing has a first holding time in the range of > 2 s (seconds) to 6 min (minutes).
- this range of the first holding time can, among other things, prevent the formation of coarse grain due to excessive grain growth and thus orange peel when forming or bending the sheet or strip.
- the second holding temperature i.e. the holding temperature of the final annealing
- the defect density or dislocation density in the aluminum matrix introduced by cold rolling is reduced primarily through recovery processes while avoiding new grain formation. This makes it possible to set the required mechanical characteristics while maintaining the elongated grain structure created during cold rolling and increasing corrosion resistance. This is particularly the case when the second holding temperature is in the range from 200 to 280 °C, preferably in the range from 200 °C to 250 °C.
- the second holding time i.e. the holding time of the final annealing.
- the second holding time should be ⁇ 6h and/or ⁇ 30h.
- the second holding time is in the range from 8 to 24 hours (hours).
- the hot rolling is carried out with a hot rolling ratio of 95% or higher from the initial thickness to the final hot strip thickness.
- a sufficiently high level of work hardening can subsequently be available to ensure an elongated grain and to fragment Fe-containing phases.
- the level of gloss as well as the corrosion resistance and thus the stability of the level of gloss can be further improved.
- a sufficiently high hot strip thickness for the possibility of a comparatively high degree of deformation during cold rolling can be achieved if the sheet or strip is hot-rolled to a final hot strip thickness in the range of 5 to 12 mm, for example from 6 to 12 mm, or in particular from 6 to 10 mm .
- the sheet or strip is preferably rolled in rolling passes with decreasing roll roughness of the rolls for each rolling pass. This means, for example, that the surface roughness of the strip or sheet can be further reduced, which, according to the prior art, also has a positive effect on the shine of the untreated aluminum surface.
- the sheet or strip is cold-rolled to a final thickness in the range of 0.5 to 1.5 mm (millimeters), in particular to 0.8 to 1.3 mm.
- This Thickness range is particularly suitable for applications in decorative components whose geometric design requires high degrees of deformation and small bending radii.
- Hot rolling can be further facilitated if the rolling billets are kept at a heating temperature of ⁇ 400 ° C, in particular in the range from 400 ° C to 470 ° C, for at least one hour before hot rolling.
- This is the minimum temperature range that enables recrystallization processes and is therefore required to reduce the ingot thickness during hot rolling, while preventing coarsening of phases in the temperature range close to the melting temperature of the aluminum alloy.
- the invention solves the problem set by the features of claim 12.
- AI l l l (0°)/ l l (90°) ⁇ 15.
- the structure in the H2X state is preferably not recrystallized and therefore does not have any recrystallized components.
- the surface of the strip or sheet preferably has a gloss level of ⁇ 50 GU, measured according to ⁇ NORM EN ISO 7668 at an angle of 20° and transversely to the rolling direction. This value is preferably ⁇ 55 GU.
- a measuring device called “micro-TRI-gloss S” from BYK-Gardner GmbH can be used for this measurement.
- the sheet or strip preferably has a shiny or a shiny and anodized surface layer, the surface of the strip or sheet having a gloss level of ⁇ 60 GU, measured according to ⁇ NORM EN ISO 7668 at an angle of 20° and transverse to the rolling direction.
- the aluminum alloy of the strip or sheet from 0.50 to 1.1% by weight magnesium (Mg), from 0.01 to 0.30% by weight silicon (Si), from 0.01 to 0.7% by weight Iron (Fe) and the rest aluminum as well as impurities that are unavoidable due to production, each with a maximum of 0.05% by weight and a maximum of 0.15% by weight in total.
- Mg magnesium
- Si silicon
- Fe Iron
- the rest aluminum as well as impurities that are unavoidable due to production, each with a maximum of 0.05% by weight and a maximum of 0.15% by weight in total.
- the aluminum alloy can also have elements from the group individually or in combination: up to 0.20% by weight Manganese (Mn) up to 0.20% by weight Copper (Cu) up to 0.10% by weight Chromium (Cr) up to 0.25% by weight Zinc (Zn) up to 0.01% by weight Titanium (Ti) up to 0.03% by weight Gallium (Ga) up to 0.05% by weight Vanadium (V)
- Tapes A, B, C, D are of type EN AW-5xxx with the following chemical composition in% by weight: Mg: 0.8%, Si: 0.03%, Fe: 0.03% and the remainder aluminum as well as impurities that are unavoidable due to production, each with a maximum of 0.05% by weight and a maximum of 0.15 in total % by weight.
- the strips A and B which follow the hot rolling according to the invention and are annealed in the strip pass-through furnace, have a gloss level that is up to 10 GU higher than the strips C and D. This is the case both for the untreated strip and for the surface-treated, namely brightened ( chemical or electrolytic) and then anodized, band the case.
- the soluble Mg-containing phases can be influenced by implementing intermediate annealing before cold rolling according to the invention.
- intermediate annealing before cold rolling according to the invention.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22165279.5A EP4253585A1 (fr) | 2022-03-29 | 2022-03-29 | Procédé de fabrication d'une tôle ou d'une bande et tôle ou bande ainsi fabriquée |
| PCT/EP2023/058212 WO2023187019A1 (fr) | 2022-03-29 | 2023-03-29 | Procédé de production d'une tôle ou d'une bande métallique, et tôle ou bande métallique produite au moyen de ce procédé |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22165279.5A EP4253585A1 (fr) | 2022-03-29 | 2022-03-29 | Procédé de fabrication d'une tôle ou d'une bande et tôle ou bande ainsi fabriquée |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4253585A1 true EP4253585A1 (fr) | 2023-10-04 |
Family
ID=80999423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22165279.5A Pending EP4253585A1 (fr) | 2022-03-29 | 2022-03-29 | Procédé de fabrication d'une tôle ou d'une bande et tôle ou bande ainsi fabriquée |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4253585A1 (fr) |
| WO (1) | WO2023187019A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018011069A1 (fr) * | 2016-07-13 | 2018-01-18 | Constellium Neuf-Brisach | Ébauches en alliage d'aluminium avec recuit éclair local |
| EP3011067B1 (fr) | 2013-06-17 | 2018-10-24 | Constellium Rolled Products Singen GmbH & Co.KG | Jonc enjoliveur de véhicule automobile en alliage aluminium-magnésium. |
| CN113106307A (zh) * | 2021-03-04 | 2021-07-13 | 中铝材料应用研究院有限公司 | 一种镜面铝合金板带材及其制备方法 |
-
2022
- 2022-03-29 EP EP22165279.5A patent/EP4253585A1/fr active Pending
-
2023
- 2023-03-29 WO PCT/EP2023/058212 patent/WO2023187019A1/fr unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3011067B1 (fr) | 2013-06-17 | 2018-10-24 | Constellium Rolled Products Singen GmbH & Co.KG | Jonc enjoliveur de véhicule automobile en alliage aluminium-magnésium. |
| WO2018011069A1 (fr) * | 2016-07-13 | 2018-01-18 | Constellium Neuf-Brisach | Ébauches en alliage d'aluminium avec recuit éclair local |
| CN113106307A (zh) * | 2021-03-04 | 2021-07-13 | 中铝材料应用研究院有限公司 | 一种镜面铝合金板带材及其制备方法 |
Non-Patent Citations (2)
| Title |
|---|
| ARNAUD WECK ET AL: "Mechanical properties of the aluminum roll-bond laminate AA5005AA5083AA5005", MATERIALS SCIENCE, ELSEVIER, AMSTERDAM, NL, vol. 528, no. 19, 14 April 2011 (2011-04-14), pages 6186 - 6193, XP028227901, ISSN: 0921-5093, [retrieved on 20110422], DOI: 10.1016/J.MSEA.2011.04.037 * |
| ENGLER OLAF: "Texture and anisotropy in the Al-Mg alloy AA 5005 - Part I: Texture evolution during rolling and recrystallization", MATERIALS SCIENCE, vol. 618, 24 August 2014 (2014-08-24), AMSTERDAM, NL, pages 654 - 662, XP055958588, ISSN: 0921-5093, DOI: 10.1016/j.msea.2014.08.037 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023187019A1 (fr) | 2023-10-05 |
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