Seven-series aluminum alloy profile and manufacturing method thereof
A technology for aluminum alloy profiles and a manufacturing method, which are applied in the fields of 7 series aluminum alloy profiles and their manufacturing, Al-Zn-Mg-Cu aluminum alloy profiles and their manufacturing fields, can solve the problem that high strength and high ductility cannot be achieved at the same time. Application range and other issues, to achieve excellent strength and ductility, reduce production costs, and improve efficiency
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Embodiment 1
[0037] A method for manufacturing a 7-series aluminum alloy profile, comprising the following steps:
[0038] A. Calculate the amount of each aluminum alloy raw material and prepare the aluminum alloy raw material according to the ratio. The mass percentage ratio of each element of the 7-series aluminum alloy raw material is as follows:
[0039] element Si Fe Cu mn Mg Cr Zn Zr Ti Impurities Al content 0.5 0.5 2.0 0.3 4.0 0.3 8.0 0.2 0.03 0.05 margin
[0040] Add the prepared aluminum alloy raw materials into the melting furnace and mix them evenly to melt them into liquid aluminum alloys, then melt and cast the liquid aluminum alloys into aluminum alloy ingots. The semi-continuous casting method of filtering and casting, the diameter of the aluminum alloy ingot is 400mm;
[0041] B. The aluminum alloy ingot obtained in step A is subjected to solution treatment, the temperature of solution treatment is 450° C., and the solution ...
Embodiment 2
[0046] The difference between Example 2 and Example 1 is that the mass percentage ratio of each element of the 7-series aluminum alloy raw material in step A is as follows:
[0047] element Si Fe Cu mn Mg Cr Zn Zr Ti Impurities Al content 0.4 0.35 2.0 0.2 3.0 0.2 8.0 0.1 0.03 0.05 margin
Embodiment 3
[0049] The difference between Example 3 and Example 2 is that the temperature of the solution treatment in step B is 430° C., and the solution holding time is 6 hours.
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