ALMGSI STRIP FOR APPLICATIONS HAVING HIGH FORMABILITY REQUIREMENTS

The invention relates to a method for producing a strip made of an AlMgSi alloy in which a rolling ingot is cast of an AlMgSi alloy, the rolling ingot is subjected to homogenization, the rolling ingot which has been brought to rolling temperature is hot-rolled, and then is optionally cold-rolled to the final thickness thereof. The problem of providing a method for producing an aluminum strip made of an AlMgSi alloy and an aluminum strip, which has a higher breaking elongation with constant strength and therefore enables higher degrees of deformation in producing structured metal sheets, is solved in that the hot strip has a temperature of no more than 130° C. directly at the exit of the last rolling pass, preferably a temperature of no more than 100° C., and the hot strip is coiled at that or a lower temperature. 1. An aluminum strip comprising a AlMgSi alloy , wherein the aluminum ally is one of the alloy type AA6014 , AA6016 , AA6060 , AA6111 , or AA6181 produced with a method comprising:casting a rolling ingot;homogenizing the rolling ingot;hot rolling the rolling ingot using multiple hot rolling passes, the rolling ingot having been brought to a hot rolling temperature, and then optionally cold rolling the rolling ingot to a final thickness to produce a hot strip;wherein a cooling operation is performed within the last two hot rolling passes using at least one plate cooler and an emulsion charged hot rolling pass itself, wherein the hot rolling passes are carried out by the working rolls of a hot rolling mill, such that immediately after the exit from the last rolling pass from the hot rolling mill the hot strip has an exit temperature not above 130° C. and the hot strip is coiled at this or a lower temperature at the exit of the hot rolling mill to produce a finished rolled aluminum strip;wherein the aluminum strip in the T4 state has a breaking elongation A80 of at least 30% with a yield point of Rp0.2 from 80 to 140 MPa; andwherein the aluminum strip is ...

Method for manufacturing AlMgSi aluminium strip

The invention relates to a method for producing a strip made of an AlMgSi alloy, in which a rolling ingot made of an AlMgSi alloy is cast, the rolling ingot is subjected to homogenization, the rolling ingot having been brought to rolling temperature is hot-rolled and is optionally cold-rolled to the final thickness thereafter. The problem of providing an improved method for producing aluminum strip made of an AlMgSi alloy, with which AlMgSi strips having very good shaping behaviour can be produced reliably, is solved in that immediately after exit from the final rolling pass, the hot strip has a temperature of between more than 130° C., preferably 135° C., and at most 250° C., preferably at most 230° C., and the hot strip is wound up at this temperature. 1. A method for manufacturing a strip from an AlMgSi alloy , comprising casting a rolling ingot from an AlMgSi alloy , wherein the rolling ingot undergoes homogenization , the rolling ingot which has been brought to a rolling temperature is hot rolled then optionally cold rolled to final thickness , and the finished rolled strip is solution annealed and quenched , wherein immediately after being discharged from the last hot rolling pass , the hot strip is at a temperature of more than 130° C. to 250° C. , preferably to 230° C. , and the hot strip is coiled at this temperature.2. The method as claimed in claim 1 , wherein the hot strip is quenched to the outlet temperature using at least one plate cooler and the hot rolling pass itself claim 1 , loaded with emulsion.3. The method as claimed in claim 1 , wherein prior to the start of the cooling process claim 1 , the temperature of the hot strip is more than 400° C.4. The method as claimed in claim 1 , wherein the temperature of the hot strip after the penultimate roiling pass is more than 250° C.5. The method as claimed in claim 1 , wherein the temperature of the hot strip after the last rolling pass prior to coiling is 200° C. to 230° C.6. The method as claimed in ...

Method for manufacturing AlMgSi aluminium strip

The invention relates to a method for producing a strip made of an AlMgSi alloy, in which a rolling ingot made of an AlMgSi alloy is cast, the rolling ingot is subjected to homogenization, the rolling ingot having been brought to rolling temperature is hot-rolled and is optionally cold-rolled to the final thickness thereafter. The problem of providing an improved method for producing aluminum strip made of an AlMgSi alloy, with which AlMgSi strips having very good shaping behaviour can be produced reliably, is solved in that immediately after exit from the final rolling pass, the hot strip has a temperature of between more than 130° C., preferably 135° C., and at most 250° C., preferably at most 230° C., and the hot strip is wound up at this temperature. 1. A method for manufacturing a strip from an AlMgSi alloy , comprising casting a rolling ingot from an AlMgSi alloy , wherein the rolling ingot undergoes homogenization , the rolling ingot which has been brought to a rolling temperature is hot rolled then optionally cold rolled to final thickness , and the finished rolled strip is solution annealed and quenched , wherein immediately after being discharged from the last hot rolling pass , the hot strip is at a temperature of more than 130° C. to 250° C. , preferably to 230° C. , and the hot strip is coiled at this temperature.2. The method as claimed in claim 1 , wherein the hot strip is quenched to the outlet temperature using at least one plate cooler and the hot rolling pass itself claim 1 , loaded with emulsion.3. The method as claimed in claim 1 , wherein prior to the start of the cooling process claim 1 , the temperature of the hot strip is more than 400° C.4. The method as claimed in claim 1 , wherein the temperature of the hot strip after the penultimate rolling pass is more than 250° C.5. The method as claimed in claim 1 , wherein the temperature of the hot strip after the last rolling pass prior to coiling is 200° C. to 230° C.6. The method as claimed in ...

Aluminium alloy which is resistant to intercrystalline corrosion

The invention relates to an aluminium alloy, the use of an aluminium alloy strip or sheet and a method for producing an aluminium alloy strip or sheet. An aluminium alloy which has only a slight tendency towards intercrystalline corrosion and which at the same time provides high levels of strength and good deformability and which contains standard alloy components so that the recycling of the aluminium alloy is simplified is provided herein. 1. Aluminium alloy comprising alloy components , which have the following composition in % by weight:2.91%≦Mg≦4.5%,0.5%≦Mn≦0.8%,0.05%≦Cu≦0.30%,0.05%≦Cr≦0.30%, Fe≦0.40%,', 'Si≦0.25%,', 'Ti≦0.20%,, '0.05%≦Zn≦0.9%,'}the balance Al and impurities individually less than 0.05% and in total a maximum of 0.15% and wherein the following applies to the alloy components Zn, Cr, Cu and Mn:(2.3* % Zn+1.25*l % Cr+0.65* % Cu+0.05* % Mn)+2.4≧% Mg.2. Aluminium alloy according to claim 1 , wherein the following further applies to the alloy components Zn claim 1 , Cr claim 1 , Cu and Mn:(2.3* % Zn+1.25* % Cr+0.65* % Cu+0.05* % Mn)+1.4≦% Mg.3. Aluminium alloy according to claim 1 , wherein the alloy component Cu has the following content in % by weight:0.05%≦Cu≦0.20%.4. Aluminium alloy according to claim 1 , wherein the alloy component Cr has the following content in % by weight:0.05%≦Cr≦0.20%.5. Aluminium alloy according to claim 1 , wherein the alloy components Mg and Zn have the following contents in % by weight:2.91%≦Mg≦3.6%,0.05%≦Zn≦0.75%.6. Aluminium alloy according to claim 1 , wherein the content of the alloy component Mg is at least 3.6% by weight and a maximum of 4.5% by weight.7. A method of using an aluminium alloy strip or sheet of an aluminium alloy according to claim 1 , comprising a step of producing at least one of chassis and structural components in vehicle claim 1 , aircraft or ship construction using said aluminium alloy.8. The method according to claim 7 , wherein the aluminium alloy strip or sheet is used for producing a ...

Aluminium alloy which is resistant to intercrystalline corrosion

The invention relates to an aluminium alloy, the use of an aluminium alloy strip or sheet and a method for producing an aluminium alloy strip or sheet. An aluminium alloy which has only a slight tendency towards intercrystalline corrosion and which at the same time provides high levels of strength and good deformability and which contains standard alloy components so that the recycling of the aluminium alloy is simplified is provided herein. 1. Aluminium alloy comprising alloy components , which have the following composition in % by weight:2.91%≦Mg≦4.5%,0.5%≦Mn≦0.8%,0.05%≦Cu≦0.30%,0.05%≦Cr≦0.30%, Fe≦0.40%,', 'Si≦0.25%,', 'Ti≦0.20%,, '0.05%≦Zn≦0.9%,'}the balance Al and impurities individually less than 0.05% and in total a maximum of 0.15% and wherein the following applies to the alloy components Zn, Cr, Cu and Mn:(2.3* % Zn+1.25* % Cr+0.65* % Cu+0.05* % Mn)+2.4≧% Mg.2. Aluminium alloy according to claim 1 , wherein the following further applies to the alloy components Zn claim 1 , Cr claim 1 , Cu and Mn:(2.3* % Zn+1.25* % Cr+0.65* % Cu+0.05* % Mn)+1.4≦% Mg.3. Aluminium alloy according to claim 1 , wherein the alloy component Cu has the following content in % by weight:0.05%≦Cu≦0.20%.4. Aluminium alloy according to claim 1 , wherein the alloy component Cr has the following content in % by weight:0.05%≦Cr≦0.20%.5. Aluminium alloy according to claim 1 , wherein the alloy components Mg and Zn have the following contents in % by weight:2.91%≦Mg≦3.6%,0.05%≦Zn≦0.75%.6. Aluminium alloy according to claim 1 , wherein the content of the alloy component Mg is at least 3.6% by weight and a maximum of 4.5% by weight.7. A method of using an aluminium alloy strip or sheet of an aluminium alloy according to claim 1 , comprising a step of producing at least one of chassis and structural components in vehicle claim 1 , aircraft or ship construction using said aluminium alloy.8. The method according to claim 7 , wherein the aluminium alloy strip or sheet is used for producing a ...

Aluminium alloy which is resistant to intercrystalline corrosion

The invention relates to an aluminum alloy, to the use of an aluminum alloy strip or sheet, and to a method for producing an aluminum alloy strip or sheet. The aim of providing an aluminum alloy that has only a slight tendency toward intercrystalline corrosion, provides high strength and good formability at the same time, and contains standard alloy components so that the recycling of the aluminum alloy is simplified, is achieved by an aluminum alloy that has the following composition in wt%: 2.91% < Mg < 4.5%, 0.5% < Mn < 0.8%, 0.05% < Cu < 0.30%, 0.05% < Cr < 0.30%, 0.05% < Zn < 0.9%, Fe < 0.40%, Si < 0.25%, Ti < 0.20%, the remainder Al and contaminants individually less than 0.05%, in total no more than 0.15%, wherein the following applies to the alloy components Zn, Cr, Cu, and Mn: (2.3* %Zn + 1.25* %Cr + 0.65* %Cu + 0.05* %Mn) + 2.4 > %Mg.

AlMgSi-sheet for applications with high shaping requirements