Method for manufacturing aluminum alloy plates or aluminum alloy coils
A technology of aluminum alloy sheet and production method, which is applied in the field of metal materials, can solve the problems of poor processing performance, poor structure uniformity, and low cold deformation of aluminum alloy sheet or coil, and achieve the elimination of cold deformation energy storage and fine structure state Effect
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Embodiment 1
[0041]The rolled 7075 alloy with a thickness of 4.5mm without aluminum clad layer was heated to 410°C at a rate of 200°C / min, kept at a temperature of 20 minutes, cooled to room temperature in water, then placed in a salt bath furnace and heated to 473°C, and kept at a temperature of 60 minutes. Water cooled to room temperature, and then placed in an air furnace, heated to 125°C, kept for 24 hours, and cooled to room temperature, to obtain a T6 aluminum alloy plate.
[0042] According to GB / T 3246, the aluminum alloy plate obtained in Example 1 is subjected to a low-magnification grain size test to obtain its low-magnification grain size diagram, such as figure 2 shown.
[0043] According to GB / T 16865, the aluminum alloy plate obtained in Example 1 was tested for mechanical properties, and the results of the mechanical properties test were obtained, as shown in Table 1.
Embodiment 2
[0049] Heat the rolled 7475 alloy with a thickness of 2.5mm to 410°C at a rate of 200°C / min, hold it for 15 minutes, cool it to room temperature with water, then place it in a salt bath furnace, heat it to 473°C, and hold it for 30 minutes. Water cooled to room temperature, and then placed in an air furnace, heated to 125°C, kept for 24 hours, and cooled to room temperature, to obtain a T6 aluminum alloy plate.
[0050] According to GB / T 3246, the aluminum alloy plate obtained in Example 2 is subjected to a high-magnification grain size test to obtain its high-magnification grain size diagram, such as Figure 4 shown.
[0051] According to GB / T 16865, the aluminum alloy plate obtained in Example 2 was tested for mechanical properties, and the results of the mechanical properties test were obtained, as shown in Table 1.
Embodiment 3
[0057] Put the rolled 7075 alloy with a thickness of 6.0mm without aluminum clad layer in a roller hearth air quenching furnace, heat it to 410°C at a speed of 200°C / min, keep it warm for 20min, cool it to room temperature, and then place it in a salt bath furnace Internally heated to 473°C, held for 60 minutes, water-cooled to room temperature, then placed in an air furnace, heated to 125°C, held for 24 hours, and cooled to room temperature to obtain a T6 aluminum alloy plate.
[0058] According to GB / T 3246, the aluminum alloy plate obtained in embodiment 3 is subjected to a low-magnification grain size test to obtain its low-magnification grain size diagram, such as Image 6 shown.
[0059] According to GB / T 16865, the aluminum alloy sheet obtained in Example 3 was tested for mechanical properties, and the results of the mechanical properties test were obtained, as shown in Table 1.
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