EP0140827B1 - Verfahren zur Herstellung feinkörniger Aluminiumwalzprodukte - Google Patents
Verfahren zur Herstellung feinkörniger Aluminiumwalzprodukte Download PDFInfo
- Publication number
- EP0140827B1 EP0140827B1 EP84810363A EP84810363A EP0140827B1 EP 0140827 B1 EP0140827 B1 EP 0140827B1 EP 84810363 A EP84810363 A EP 84810363A EP 84810363 A EP84810363 A EP 84810363A EP 0140827 B1 EP0140827 B1 EP 0140827B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- iron
- annealing
- manganese
- alloy
- rolled
- 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.)
- Expired
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
Definitions
- the invention relates to a process for the production of aluminum rolled products with iron as the predominant alloying element, which, after final annealing after annealing at at least 250 ° C., have a grain size of less than 10 ⁇ m.
- Gram size means the average diameter of all grains present.
- Such small grains in the annealed condition are, among other things, a good prerequisite for high strength or yield strength with good ductility at the same time; this applies to all thickness ranges from millimeter sheet to film a few micrometers thick.
- the invention is therefore based on the object of providing a process based on low-alloy aluminum-iron alloys which, using the semi-continuous ingot casting plants which are in widespread use, allows the production of rolled products in which the final roll thickness is at an annealing above 250 ° C, the grains are smaller than 10 ⁇ m.
- the object is achieved in that an alloy consisting of 0.8 to 1.5% by weight of iron, each up to 0.5% silicon and manganese, the sum of silicon and manganese between 0.2 and 0 .8%, and other components up to 0.3% each, up to 0.8% in total, the rest aluminum, is cast at a solidification rate of 2.5 to 25 cm / min, after hot rolling with a cooling rate of at least 0.5 K / sec brought to temperatures below 120 ° C and then cold rolled to a reduction in thickness of at least 75% without intermediate annealing and that the annealing temperature at final thickness does not exceed 380 ° C.
- the specified method is less suitable for solidification speeds outside the defined range.
- the ratio of deformability to strength can be increased as the final annealing temperature increases. It was found for the alloy range according to the invention that the final annealing temperature must not exceed 380 ° C. in order to avoid grains of more than 10 ⁇ m with certainty.
- the steps following hot rolling are also critical for the production of fine grains.
- the tests showed that, in order not to endanger the formation of fine grains, the cooling rate in the area between the hot rolling end temperature and about 120 ° C must not fall below 0.5 K / sec; the cooling rate below 120 ° C is insignificant in this regard.
- Such cooling rates can be achieved when the strip passes through a water tank or when the strip is cooled by means of intensive air flow.
- the first annealing after hot rolling, a final annealing or, if necessary, an intermediate annealing, must not take place at a thickness which is more than a quarter of the final hot rolling thickness.
- the proportion by weight of iron must be higher than 0.8%; otherwise grains of more than 10 ⁇ m in size are formed after the final annealing. On the other hand, if there is more than 1.5% iron, the eutectic composition is approached; this harbors the risk of forming coarse precipitates during casting, which would seriously impair the deformability.
- ingots of both alloys with a cross section of 412x1000mm are cast at a speed of 10cm / min; the solidification rate was 7 cm / min.
- the bars were milled over, preheated to 540 ° C and hot rolled to 8mm.
- the hot rolled strip passed through a water box and was cold rolled to 0.7 mm.
- a three-hour annealing was carried out at 350 ° C; then cold rolling to 0.1 mm.
- After 20 hours of final annealing at 320 ° C the following values were achieved (the mechanical values measured in the rolling direction):
- Example 2 Up to 0.1 mm thick, the two alloys were processed in the same way as in Example 1. It was then cold rolled to 13 ⁇ m and finally annealed at 280 ° C.
- the manufacturing procedure corresponds in one case (AE) to that of Example 1, in the other case (AK) it was modified so that the hot rolled strip was not passed through a water box, but was immediately rewound.
- Example 2 Up to 0.1 mm the above-mentioned alloy was processed as in Example 1. However, the 20-hour final annealing was carried out in one variant (GE) at 320 ° C and in another variant (GK) at 400 ° C.
- Alloy E1 was processed as in Example 1 to and with the water cooling of the hot-rolled strip.
- the strip was further cold-rolled to 2.8 mm, annealed at 360 ° C for 3 hours, further rolled to 0.8 mm, annealed at 350 ° C for 3 hours, finish-rolled to 0.1 mm and finally, as in Example 1, 20 hours at 320 ° C annealed (KW).
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Cereal-Derived Products (AREA)
- Forging (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84810363T ATE29742T1 (de) | 1983-08-23 | 1984-07-24 | Verfahren zur herstellung feinkoerniger aluminiumwalzprodukte. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH4584/83A CH654027A5 (de) | 1983-08-23 | 1983-08-23 | Verfahren zur herstellung feinkoerniger aluminiumwalzprodukte. |
CH4584/83 | 1983-08-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0140827A1 EP0140827A1 (de) | 1985-05-08 |
EP0140827B1 true EP0140827B1 (de) | 1987-09-16 |
Family
ID=4278817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84810363A Expired EP0140827B1 (de) | 1983-08-23 | 1984-07-24 | Verfahren zur Herstellung feinkörniger Aluminiumwalzprodukte |
Country Status (6)
Country | Link |
---|---|
US (1) | US4483719A (no) |
EP (1) | EP0140827B1 (no) |
AT (1) | ATE29742T1 (no) |
CH (1) | CH654027A5 (no) |
DE (2) | DE3330814C2 (no) |
NO (1) | NO162081C (no) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8800082D0 (en) * | 1988-01-05 | 1988-02-10 | Alcan Int Ltd | Battery |
GB8906468D0 (en) * | 1989-03-21 | 1989-05-04 | Alcan Int Ltd | Metal treatment |
DE3913324A1 (de) * | 1989-04-22 | 1990-10-31 | Vaw Ver Aluminium Werke Ag | Aluminiumwalzhalbzeug und verfahren zu seiner herstellung |
DE3914020A1 (de) * | 1989-04-28 | 1990-10-31 | Vaw Ver Aluminium Werke Ag | Aluminiumwalzprodukt und verfahren zu seiner herstellung |
US5141820A (en) * | 1991-01-04 | 1992-08-25 | Showa Aluminum Corporation | Aluminum pipe for use in forming bulged portions thereon and process for producing same |
US5380379A (en) * | 1993-08-18 | 1995-01-10 | Alcoa Aluminio Do Nordeste S.A. | Aluminum foil product and manufacturing method |
DE4420533A1 (de) * | 1994-06-14 | 1995-12-21 | Salzburger Aluminium Ag | Verfahren zur Herstellung von Formgußteilen aus Aluminiumlegierungen |
US5725695A (en) * | 1996-03-26 | 1998-03-10 | Reynolds Metals Company | Method of making aluminum alloy foil and product therefrom |
NL1003401C2 (nl) * | 1996-06-24 | 1998-01-07 | Hoogovens Aluminium Bv | Aluminiumplaat met een goede vervormbaarheid en een werkwijze voor het vervaardigen daarvan. |
DE19948820B4 (de) * | 1999-08-05 | 2004-03-04 | Vaw Aluminium Ag | Wärmeabschirmblech bestehend aus einer Aluminiumlegierung |
DE29923957U1 (de) * | 1999-08-05 | 2001-07-05 | Vaw Ver Aluminium Werke Ag | Aluminiumlegierung |
CN102641889B (zh) * | 2012-04-06 | 2015-11-04 | 东北大学 | 一种钎焊复合铝箔的制备方法 |
CN102836875B (zh) * | 2012-08-29 | 2015-09-02 | 三门峡天一铝业有限公司 | 汽车热交换器用铝板、铝箔、铝带连续复合轧制工艺 |
JP6496490B2 (ja) * | 2014-04-16 | 2019-04-03 | 三菱アルミニウム株式会社 | アルミニウム合金軟質箔およびその製造方法 |
CN106536772A (zh) * | 2014-07-09 | 2017-03-22 | 海德鲁铝业钢材有限公司 | 铝合金或该合金组成的扁铝制品应用于铝‑塑料复合构件 |
EP4015658A1 (de) * | 2020-12-18 | 2022-06-22 | Speira GmbH | Aluminiumfolie mit verbesserter barriereeigenschaft |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1208504B (de) * | 1961-08-10 | 1966-01-05 | Metall Werke Merkur G M B H | Verfahren zur Herstellung hochglanzfaehiger Aluminiumbleche bzw. -baender |
US3304208A (en) * | 1964-08-03 | 1967-02-14 | Revere Copper & Brass Inc | Production of fine grain aluminum alloy sheet |
US3397044A (en) * | 1967-08-11 | 1968-08-13 | Reynolds Metals Co | Aluminum-iron articles and alloys |
US3827917A (en) * | 1969-06-18 | 1974-08-06 | Kaiser Aluminium Chem Corp | Aluminum electrical conductor and process for making the same |
US3691972A (en) * | 1970-07-09 | 1972-09-19 | Reynolds Metals Co | Aluminous metal articles and method |
DE2423597C3 (de) * | 1973-05-17 | 1983-11-03 | Alcan Research and Development Ltd., Montreal, Quebec | Verfahren zur Herstellung dispersionsverfestigter Aluminlegierungsbleche und -folien mit gleichmäßig verteilten feinen intermetallischen Teilchen |
US3960607A (en) * | 1974-03-08 | 1976-06-01 | National Steel Corporation | Novel aluminum alloy, continuously cast aluminum alloy shapes, method of preparing semirigid container stock therefrom, and container stock thus prepared |
US3938991A (en) * | 1974-07-15 | 1976-02-17 | Swiss Aluminium Limited | Refining recrystallized grain size in aluminum alloys |
GB1524354A (en) * | 1974-11-15 | 1978-09-13 | Alcan Res & Dev | Method of producing aluminium alloy sheet products |
AR206656A1 (es) * | 1974-11-15 | 1976-08-06 | Alcan Res & Dev | Metodo para producir un producto en hoja de aleacion de aluminio a partir de una aleacion de al-fe |
US4028141A (en) * | 1975-03-12 | 1977-06-07 | Southwire Company | Aluminum iron silicon alloy |
US4138275A (en) * | 1976-08-10 | 1979-02-06 | Sumitomo Electric Industries, Ltd. | Method of manufacturing aluminum alloy for electric conductor |
JPS53144813A (en) * | 1977-05-24 | 1978-12-16 | Sumitomo Electric Ind Ltd | Manufacture of electroconductive aluminum alloy |
-
1983
- 1983-08-23 CH CH4584/83A patent/CH654027A5/de not_active IP Right Cessation
- 1983-08-26 DE DE3330814A patent/DE3330814C2/de not_active Expired
- 1983-09-30 US US06/537,942 patent/US4483719A/en not_active Expired - Fee Related
-
1984
- 1984-07-24 DE DE8484810363T patent/DE3466247D1/de not_active Expired
- 1984-07-24 AT AT84810363T patent/ATE29742T1/de not_active IP Right Cessation
- 1984-07-24 EP EP84810363A patent/EP0140827B1/de not_active Expired
- 1984-08-21 NO NO84843337A patent/NO162081C/no unknown
Also Published As
Publication number | Publication date |
---|---|
DE3466247D1 (en) | 1987-10-22 |
NO843337L (no) | 1985-02-25 |
CH654027A5 (de) | 1986-01-31 |
EP0140827A1 (de) | 1985-05-08 |
DE3330814C2 (de) | 1986-10-02 |
NO162081B (no) | 1989-07-24 |
ATE29742T1 (de) | 1987-10-15 |
NO162081C (no) | 1989-11-01 |
US4483719A (en) | 1984-11-20 |
DE3330814A1 (de) | 1985-03-21 |
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