CN109628803B - Aluminum alloy checkered plate in 4017-H2X state and preparation method thereof - Google Patents
Aluminum alloy checkered plate in 4017-H2X state and preparation method thereof Download PDFInfo
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- 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
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Abstract
The invention relates to a 4017-H2X aluminum alloy checkered plate and a preparation method thereof, wherein the checkered plate is composed of the following raw materials in percentage by weight: 0.6-1.6% of Si, less than or equal to 0.7% of Fe, 0.1-0.5% of Cu, 0.6-1.2% of Mn, 0.1-0.5% of Mg0.2%, less than or equal to 0.2% of Zn, less than 0.05% of other single impurities, less than 0.15% of total impurities and the balance of Al. The preparation method comprises the following steps: proportioning, smelting and casting; carrying out ingot casting soaking and machining and milling; hot rolling; cold rolling and cogging; cold rolling and embossing; continuous annealing; withdrawal straightening or crosscutting. The 4017-H22 or H24 state checkered plate prepared by the method has no naked eye crack, no orange peel grain and fine surface after being bent for 90 degrees. The checkered plate prepared by the invention can be painted and is suitable for being used as building materials and manufacturing decorative parts.
Description
Technical Field
The invention relates to the field of metal manufacturing, in particular to a 4017-H2X state aluminum alloy checkered plate and a manufacturing method thereof.
Background
The common checkered plate is mostly processed by using 1060, 3003 and 5052 aluminum alloys in 1 series, 3 series and 5 series as plate bases, and rarely uses 4 series aluminum alloys as plate bases. In comparison, the 1-series and 3-series aluminum alloy checkered plates have low hardness and slightly poor wear resistance, and are often used in common environments and in rust prevention aspects with relaxed application requirements. The 5 series aluminum alloy checkered plate has better corrosion resistance but has slightly poorer anodic oxidation effect than the 6 series aluminum alloy. The 4-series checkered plate has particularly good wear resistance and good anti-skid capability, and is usually used as building materials and decorative parts, such as anti-skid plates of traffic and building floors, boxcars, refrigerators, elevators and the like, and packaging decorative materials of screen frameworks and the like.
At present, no mature preparation process of the aluminum alloy material in the 4017-H2X state exists, and no related product of the aluminum alloy in the 4017-H2X state exists.
Disclosure of Invention
The 4017-H2X state aluminum alloy checkered plate has certain hardness and good wear resistance, has no naked eye cracks after being bent at 90 degrees, has no orange peel lines, has a fine and smooth surface, can be painted, and is suitable for being used as building materials and manufacturing decorative parts, such as anti-skid plates of traffic, building floors, freight cars, refrigerators, elevators and the like, and packaging decorative materials of screen frameworks and the like.
The invention adopts the following technical scheme:
A4017-H2X state aluminum alloy checkered plate is composed of the following raw materials by weight: 0.6 to 1.6 percent of Si, less than or equal to 0.7 percent of Fe, 0.1 to 0.5 percent of Cu, 0.6 to 1.2 percent of Mn, 0.1 to 0.5 percent of Mg, less than or equal to 0.2 percent of Zn, less than 0.05 percent of other single impurities, less than 0.15 percent of total impurities and the balance of Al.
Further, the 4017-H2X state aluminum alloy checkered plate is composed of the following raw materials in percentage by weight: 0.6 percent of Si, less than or equal to 0.7 percent of Fe, 0.1 percent of Cu, 0.6 percent of Mn, 0.1 percent of Mg, less than or equal to 0.2 percent of Zn, less than 0.05 percent of other single impurities, less than 0.15 percent of impurities in total, and the balance of Al.
Further, the 4017-H2X state aluminum alloy checkered plate is composed of the following raw materials in percentage by weight: 1.6 percent of Si, less than or equal to 0.7 percent of Fe, 0.5 percent of Cu, 1.2 percent of Mn, 0.5 percent of Mg, less than or equal to 0.2 percent of Zn, less than 0.05 percent of other single impurities, less than 0.15 percent of impurities in total, and the balance of Al.
Further, the 4017-H2X state aluminum alloy checkered plate is composed of the following raw materials in percentage by weight: 1.1% of Si, 0.7% of Fe0.7%, 0.4% of Cu, 0.9% of Mn, 0.4% of Mg, 0.2% of Zn, less than 0.05% of other single impurities, less than 0.15% of total impurities and the balance of Al.
The invention also provides a preparation method of the aluminum alloy checkered plate in the 4017-H2X state, which comprises the following steps:
step 1: burdening according to the raw material composition, and carrying out smelting and casting;
step 2: carrying out ingot casting soaking and machining and milling;
and step 3: hot rolling the blank to a thickness of 6.0 to 10.0 mm;
and 4, step 4: cold rolling and cogging: cold rolling and cogging the hot rolled blank, cold rolling deformation with total rolling reduction not less than 40% is carried out on the blank, the rolling thickness is 2.1-5.1 mm, the refractive index is controlled by cold rolling oil to be more than 90%, and the blank moves at 40 DEG CViscosity number of 2.2-2.4 mm2/s；
And 5: cold rolling and embossing: cold rolling and embossing rolling with the processing rate of 20-50% by using a pattern roller, wherein the cold rolling and embossing speed is 70-180 m/min;
step 6: and (3) continuous annealing: cleaning the embossed checkered plate strip, then carrying out rapid annealing through a continuous annealing furnace, setting the temperature of the continuous annealing furnace between 350 ℃ and 410 ℃ and the running speed of the strip at 2-8 m/min, and carrying out water cooling, drying, straightening and coiling after discharging;
and 7: straightening or transversely cutting: and pulling and straightening the continuously annealed aluminum alloy checkered plate into a plate shape or transversely cutting the plate to prepare a corresponding coiled material or plate.
Further, the smelting and casting operations in the step 1 are as follows:
mixing the raw materials, standing and refining at 700-750 ℃ for 5-8 hours, degassing, adding a grain refiner, filtering, and measuring the hydrogen content in a launder to be less than or equal to 0.1mL/100 gAL; then casting by a semi-continuous casting method at the temperature of 690-730 ℃, wherein the casting speed is 50-65 mm/min.
Further, in the step 2, the temperature of ingot casting soaking is 590-610 ℃, and the heat preservation time of ingot casting soaking is 6-8 hours.
Further, the hot rolling in step 3 is specifically performed by:
heating the cast ingot to 430-480 ℃, preserving heat for more than 3 hours, and hot rolling the cast ingot in a 1+1 type hot rolling mill set to obtain a hot rolled blank with the thickness of 6.0-10.0 mm, wherein the final rolling temperature is 260-340 ℃.
Further, the rolling oil temperature for cold rolling and cogging in the step 4 is 35-45 ℃.
Further, when X in the 4017-H2X is 2, the temperature of the continuous annealing furnace in the step 6 continuous annealing is set between 370 and 410 ℃; 4017-H2X, wherein X is 4, the temperature of the continuous annealing furnace is set to 350-390 ℃ in the continuous annealing of step 6.
The invention aims to produce the checkered plate with the thickness of 1.0-6.35 mm and the state of 4017-H22 or H24, the continuous annealing mode and the parameter setting are key procedures of the whole product, and the continuous annealing mode and the parameter setting play a decisive role in the surface and the performance of the product.
The prepared 4017-H22 and H24 state aluminum alloy checkered plate has the following bending performance: after 90 degrees of bending, no naked eye crack, no orange peel grain and fine and smooth surface.
Tensile properties are shown in table 1:
tensile Properties of aluminum alloy checkered plates in the states of Table 14017-H22 and H24
The invention has the beneficial effects that:
1. the invention has the technical effects that H22 or H24 annealing is carried out on the 4017 aluminum alloy checkered plate by utilizing the uniformity (furnace temperature interval +/-3 ℃) and the rapid heating characteristic of a continuous annealing furnace, so that the high surface and high bending performance of the material are realized, and a new product is developed for the checkered plate. Compared with the common box-type furnace annealing, the continuous annealing furnace has extremely high heating speed and short heating time. The total heating time of the aluminum strip in the continuous annealing furnace is only 2-5 minutes, and the grains of the aluminum strip after recrystallization annealing are fine. For the checkered plates in the states of 4017-H22 and H24, on one hand, the material is fine and beautiful in surface after being bent; on the other hand, the structure is uniform, and the crystal grains are fine.
2. The running speed of the strip is a main factor for determining the total time of the strip in the continuous annealing furnace, when the speed is 2-8 m/min, the 4017 aluminum alloy checkered plate can be quickly annealed within 2-5 minutes, the performance requirements of H22 and H24 states are met, and the performance of the product is qualitative.
Detailed Description
The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
The 1850mm continuous annealing/quenching line used in the examples was produced by the medium color science and technology co ltd, and was, in order from the unwinding side, an unwinder → a five-roll coarse straightening → hydraulic shear → a sewing machine → a cleaning device → a drying device → a continuous annealing furnace → a quenching device → drying → a straightener → a trimmer → a paper feeding device → a coiler. The length of the continuous annealing furnace is 32m, the motor power of the uncoiler is 75KW, the straightening machine is 13 rollers or 17 rollers, the diameter of the straightening machine is 100mm, the motor power of the coiling machine is 75KW, the continuous annealing furnace is heated by natural gas, the heating speed is extremely high, the furnace temperature is stable, the temperature is uniform, the maximum temperature difference is less than 3 ℃, the furnace heating is carried out by high-temperature high-pressure circulating hot air, a plurality of temperature measuring points are arranged in the furnace, and the aluminum alloy strip can be accurately heated.
The thickness of the produced checkered plate is 1.0-4.0 mm when the straightener is 17 rollers, and the thickness of the produced checkered plate is 4.0-6.35 mm when the straightener is 13 rollers. The crystal refiner used in the examples was AlTi5B1, i.e. aluminum titanium boron wire.
Example 1
The preparation of 4017-H22 state aluminum alloy checkered plate comprises the following steps:
step 1: preparing materials:
the raw materials are mixed according to the following weight percentage: 0.6 percent of Si, less than or equal to 0.7 percent of Fe, 0.1 percent of Cu, 0.6 percent of Mn, 0.1 percent of Mg0.1 percent, less than or equal to 0.2 percent of Zn, less than 0.05 percent of other single impurities, less than 0.15 percent of impurities in total, and the balance of Al.
Smelting and casting:
smelting the mixed metal at 700-750 ℃ for 5-8 hours, standing and refining according to the conventional method, degassing, adding a grain refiner, filtering, and measuring the hydrogen content in a launder to be less than or equal to 0.1mL/100 gAL; then casting by a semi-continuous casting method at the temperature of 690-730 ℃, wherein the casting speed is 50-65 mm/min, and the size of the cast ingot is determined according to the actual width of the product.
Step 2: homogenizing heat treatment:
carrying out homogenization heat treatment on the ingot at 590-610 ℃ for 8-12 hours, carrying out machining after the ingot is taken out of the furnace and air-cooled, and cutting the head and the tail to mill the surface.
And step 3: hot rolling:
heating the cast ingot to 430-480 ℃, preserving heat for more than 3 hours, and hot rolling the cast ingot in a 1+1 type hot rolling mill group to form a hot rolled blank with the thickness of 6.0-10.0 mm, wherein the final rolling temperature is 260-340 ℃.
And 4, step 4: cold rolling and cogging:
and (3) cold rolling and cogging the hot rolled blank, and performing cold rolling deformation with the total rolling reduction not less than 40% on the blank. The rolling thickness is 2.1 mm-5.1 mm. The cold rolling oil controls the refractive index to be more than 90 percent and the kinematic viscosity value at 40 ℃ to be 2.2-2.4 mm2And/s, controlling the rolling oil at 35-45 ℃.
And 5: cold rolling and embossing:
embossing and rolling with a pattern roller with the processing rate of 20-50%. The cold rolling embossing speed is 70-180 m/min.
Step 6: continuous annealing;
the embossed work-in-process panel strip was annealed on a 1850mm continuous annealing/quenching line. Firstly, uncoiling an embossed checkered plate strip on an uncoiler of a continuous quenching/annealing line, then sewing a strip coiling head with a strip coiling tail, and enabling the cleaned aluminum alloy strip to pass through a continuous annealing furnace at a preset speed of 2-8 m/min, wherein the furnace temperature is set between 370 ℃ and 410 ℃. The annealed strip comes out of the continuous annealing furnace, is properly cooled by water, dried and then enters a 13-roller straightener to be straightened, so that the aluminum alloy pattern plate strip obtains better flatness. And finally, winding the mixture.
And 7: straightening plate shape/crosscut:
and (3) performing plate shape straightening or transverse cutting and cutting on the straightened 4017-H22 state aluminum alloy checkered plate into a coiled material finished product or a plate finished product according to the requirement.
Example 2
The preparation of 4017-H24 state aluminum alloy checkered plate comprises the following steps:
step 1: preparing materials:
the raw materials are mixed according to the following weight percentage: 1.6 percent of Si, less than or equal to 0.7 percent of Fe, 0.5 percent of Cu, 1.2 percent of Mn, 0.5 percent of Mg0.2 percent, less than or equal to 0.2 percent of Zn, less than 0.05 percent of other single impurities, less than 0.15 percent of total impurities and the balance of Al.
Smelting and casting:
smelting the mixed metal at 700-750 ℃ for 5-8 hours, standing and refining according to the conventional method, degassing, adding a grain refiner, filtering, and measuring the hydrogen content in a launder to be less than or equal to 0.1mL/100 gAL; then casting by a semi-continuous casting method at the temperature of 690-730 ℃, wherein the casting speed is 50-65 mm/min, and the size of the cast ingot is determined according to the actual width of the product.
Step 2: homogenizing heat treatment:
carrying out homogenization heat treatment on the ingot at 590-610 ℃ for 8-12 hours, carrying out machining after the ingot is taken out of the furnace and air-cooled, and cutting the head and the tail to mill the surface.
And step 3: hot rolling:
heating the cast ingot to 430-480 ℃, preserving heat for more than 3 hours, and hot rolling the cast ingot in a 1+1 type hot rolling mill group to form a hot rolled blank with the thickness of 6.0-10.0 mm, wherein the final rolling temperature is 260-340 ℃.
And 4, step 4: cold rolling and cogging:
and (3) cold rolling and cogging the hot rolled blank, and performing cold rolling deformation with the total rolling reduction not less than 40% on the blank. The rolling thickness is 2.1 mm-5.1 mm. The cold rolling oil controls the refractive index to be more than 90 percent and the kinematic viscosity value at 40 ℃ to be 2.2-2.4 mm2And/s, controlling the rolling oil at 35-45 ℃.
And 5: cold rolling and embossing:
embossing and rolling with a pattern roller with the processing rate of 20-50%. The cold rolling embossing speed is 70-180 m/min.
Step 6: continuous annealing;
the embossed work-in-process panel strip was annealed on a 1850mm continuous annealing/quenching line. Firstly, uncoiling an embossed checkered plate strip on an uncoiling machine of a continuous annealing/quenching line, then sewing a strip coiling head with a strip coiling tail, and enabling the cleaned aluminum alloy strip to pass through a continuous annealing furnace at a preset speed of 2-8 m/min, wherein the furnace temperature is set between 350 ℃ and 390 ℃. The annealed strip comes out of the continuous annealing furnace, is properly cooled by water, dried and then enters a 13-roller straightener to be straightened, so that the aluminum alloy pattern plate strip obtains better flatness. And finally, winding the mixture.
And 7: straightening plate shape/crosscut:
and (3) performing plate shape straightening or transverse cutting and cutting on the straightened 4017-H24 state aluminum alloy checkered plate into a coiled material finished product or a plate finished product according to the requirement.
Example 3
The preparation of 4017-H22 state aluminum alloy checkered plate comprises the following steps:
step 1: preparing materials:
the raw materials are mixed according to the following weight percentage: 1.1% of Si, 0.7% of Fe0.7%, 0.4% of Cu, 0.9% of Mn, 0.4% of Mg0.2%, less than 0.05% of other single impurities, less than 0.15% of total impurities and the balance of Al.
Smelting and casting:
smelting the mixed metal at 700-750 ℃ for 5-8 hours, standing and refining according to the conventional method, degassing, adding a grain refiner, filtering, and measuring the hydrogen content in a launder to be less than or equal to 0.1mL/100 gAL; then casting by a semi-continuous casting method at the temperature of 690-730 ℃, wherein the casting speed is 50-65 mm/min, and the size of the cast ingot is determined according to the actual width of the product.
Step 2: homogenizing heat treatment:
carrying out homogenization heat treatment on the ingot at 590-610 ℃ for 8-12 hours, carrying out machining after the ingot is taken out of the furnace and air-cooled, and cutting the head and the tail to mill the surface.
And step 3: hot rolling:
heating the cast ingot to 430-480 ℃, preserving heat for more than 3 hours, and hot rolling the cast ingot in a 1+1 type hot rolling mill group to form a hot rolled blank with the thickness of 6.0-10.0 mm, wherein the final rolling temperature is 260-340 ℃.
And 4, step 4: cold rolling and cogging:
and (3) cold rolling and cogging the hot rolled blank, and performing cold rolling deformation with the total rolling reduction not less than 40% on the blank. The rolling thickness is 2.1 mm-5.1 mm. The cold rolling oil controls the refractive index to be more than 90 percent and the kinematic viscosity value at 40 ℃ to be 2.2-2.4 mm2And/s, controlling the rolling oil at 35-45 ℃.
And 5: cold rolling and embossing:
embossing and rolling with a pattern roller with the processing rate of 20-50%. The cold rolling embossing speed is 70-180 m/min.
Step 6: continuous annealing;
the embossed work-in-process panel strip was annealed on a 1850mm continuous annealing/quenching line. Firstly, uncoiling an embossed checkered plate strip on an uncoiling machine of a continuous annealing/quenching line, then sewing a strip coiling head with a strip coiling tail, passing the cleaned aluminum alloy strip through a 1850mm continuous annealing furnace at a preset speed of 2-8 m/min, and setting the furnace temperature between 370 ℃ and 410 ℃. The annealed strip comes out of the continuous annealing furnace, is properly cooled by water, dried and then enters a 17-roll straightener to be straightened, so that the aluminum alloy pattern plate strip obtains better flatness. And finally, winding the mixture.
And 7: straightening plate shape/crosscut:
and (3) performing plate shape straightening or transverse cutting and cutting on the straightened 4017-H22 state aluminum alloy checkered plate into a coiled material finished product or a plate finished product according to the requirement.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (9)
1. The aluminum alloy checkered plate in the 4017-H2X state is characterized by comprising the following raw materials in percentage by weight: 0.6-1.6% of Si, less than or equal to 0.7% of Fe, 0.1-0.5% of Cu, 0.6-1.2% of Mn, 0.1-0.5% of Mg, less than or equal to 0.2% of Zn, less than 0.05% of other single impurities, less than 0.15% of total impurities and the balance of Al;
the preparation method of the aluminum alloy checkered plate in the 4017-H2X state comprises the following steps:
step 1: burdening according to the raw material composition, and carrying out smelting and casting;
step 2: carrying out ingot casting soaking and machining and milling;
and step 3: hot rolling the blank to a thickness of 6.0 to 10.0 mm;
and 4, step 4: cold rolling and cogging: carrying out cold rolling cogging on a hot-rolled blank, carrying out cold rolling deformation with the total reduction of not less than 40% on the blank, wherein the rolling thickness is 2.1-5.1 mm, the controlled refractive index of cold rolling oil is more than 90%, and the kinematic viscosity value at 40 ℃ is 2.2-2.4 mm/s;
and 5: cold rolling and embossing: cold rolling and embossing rolling with the processing rate of 20-50% by using a pattern roller, wherein the cold rolling and embossing speed is 70-180 m/min;
step 6: and (3) continuous annealing: cleaning the embossed checkered plate strip, then carrying out rapid annealing through a continuous annealing furnace, setting the temperature of the continuous annealing furnace between 350 ℃ and 410 ℃ and the running speed of the strip at 2-8 m/min, and carrying out water cooling, drying, straightening and coiling after discharging;
and 7: straightening or transversely cutting: and pulling and straightening the continuously annealed aluminum alloy checkered plate into a plate shape or transversely cutting the plate to prepare a corresponding coiled material or plate.
2. The 4017-H2X state aluminum alloy checkered plate of claim 1, which is characterized by comprising the following raw materials in percentage by weight: 0.6 percent of Si, less than or equal to 0.7 percent of Fe, 0.1 percent of Cu, 0.6 percent of Mn, 0.1 percent of Mg, less than or equal to 0.2 percent of Zn, less than 0.05 percent of other single impurities, less than 0.15 percent of impurities in total, and the balance of Al.
3. The 4017-H2X state aluminum alloy checkered plate of claim 1, which is characterized by comprising the following raw materials in percentage by weight: 1.6 percent of Si, less than or equal to 0.7 percent of Fe, 0.5 percent of Cu, 1.2 percent of Mn, 0.5 percent of Mg, less than or equal to 0.2 percent of Zn, less than 0.05 percent of other single impurities, less than 0.15 percent of impurities in total, and the balance of Al.
4. The 4017-H2X state aluminum alloy checkered plate of claim 1, which is characterized by comprising the following raw materials in percentage by weight: 1.1% of Si, 0.7% of Fe0.7%, 0.4% of Cu, 0.9% of Mn, 0.4% of Mg, 0.2% of Zn, less than 0.05% of other single impurities, less than 0.15% of total impurities and the balance of Al.
5. The 4017-H2X state aluminum alloy checkered plate as claimed in claim 1, wherein the smelting and casting operations in step 1 are as follows:
mixing the raw materials, standing and refining at 700-750 ℃ for 5-8 hours, degassing, adding a grain refiner, filtering, and measuring the hydrogen content in a launder to be less than or equal to 0.1mL/100 gAl; then casting by a semi-continuous casting method at the temperature of 690-730 ℃, wherein the casting speed is 50-65 mm/min.
6. The aluminum alloy checkered plate in the 4017-H2X state as claimed in claim 1, wherein the temperature for soaking the ingot in the step 2 is 590-610 ℃, and the holding time for soaking the ingot is 6-8 hours.
7. The 4017-H2X state aluminum alloy checkered plate as claimed in claim 1, wherein the hot rolling in step 3 is carried out by the following specific operations:
heating the cast ingot to 430-480 ℃, preserving heat for more than 3 hours, and hot rolling the cast ingot in a 1+1 type hot rolling mill set to obtain a hot rolled blank with the thickness of 6.0-10.0 mm, wherein the final rolling temperature is 260-340 ℃.
8. The 4017-H2X state aluminum alloy checkerboard of claim 1, wherein the rolling oil temperature of the cold rolling cogging in step 4 is 35-45 ℃.
9. The 4017-H2X state aluminum alloy checkered plate as claimed in claim 1, wherein when X is 2 in 4017-H2X, the temperature of the continuous annealing furnace in step 6 continuous annealing is set between 370 ℃ and 410 ℃; 4017-H2X, wherein X is 4, the temperature of the continuous annealing furnace is set to 350-390 ℃ in the continuous annealing of step 6.
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| CN109988948B (en) * | 2019-04-26 | 2021-05-18 | 郑州明泰实业有限公司 | 5182-O state aluminum alloy plate for automobile inner plate and production method thereof |
| CN112626389A (en) * | 2020-12-18 | 2021-04-09 | 亚太轻合金(南通)科技有限公司 | 4XXX series aluminum alloy and preparation method thereof |
| CN115747535B (en) * | 2022-09-07 | 2023-10-03 | 河南明晟新材料科技有限公司 | Manufacturing method for improving edge covering performance of 6016 automobile stamping plate |
| CN115634931A (en) * | 2022-10-24 | 2023-01-24 | 西南铝业（集团）有限责任公司 | Rolling process of ultrathin and ultra-wide checkered plate |
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| JP4067432B2 (en) * | 2002-03-12 | 2008-03-26 | 住友軽金属工業株式会社 | Method for producing Al-Mg aluminum alloy plate for hot blow molding and method for producing hot blow molded product |
| JP2003328094A (en) * | 2002-05-17 | 2003-11-19 | Sky Alum Co Ltd | Production method for rolled aluminum alloy plate for lithographic printing form plate support |
| CN101481764B (en) * | 2009-02-12 | 2010-09-15 | 郑州明泰实业有限公司 | Aluminum alloy rolled plate and producing method thereof |
| EP2964800B2 (en) * | 2013-03-07 | 2022-06-15 | Aleris Aluminum Duffel BVBA | Method of manufacturing an al-mg-si alloy rolled sheet product with excellent formability |
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