7B04-T7451 aluminum alloy plate and preparation method thereof
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A 7B04-T7451, aluminum alloy plate technology, applied in the field of plate manufacturing, can solve problems such as blank production technology
Inactive Publication Date: 2021-05-14
NORTHEAST LIGHT ALLOY CO LTD
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[0004] The purpose of the present invention is to solve the problem that the production technology of 7B04 alloy T7451 state plate in my country is blank at present, and provide a kind of 7B04-T7451 aluminum alloy plate and its preparation method
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specific Embodiment approach 1
[0014] Specific Embodiment 1: In this embodiment, a 7B04-T7451 aluminum alloy plate contains elements and mass fractions: Zn is 5.0% to 6.5%, Mg is 1.8% to 2.8%, Cu is 1.4% to 2.0%, and Mn is 0.2%-0.6%, Cr 0.1%-0.25%, Fe 0.05%-0.25%, Si≤0.1%, Ni≤0.1%, Ti≤0.05%, and the balance is Al.
[0015] The single element content of the impurity alloy is ≤0.05%, and the total element content of the impurity alloy is ≤0.15%.
specific Embodiment approach 2
[0016] Specific embodiment two: the preparation method of a kind of 7B04-T7451 aluminum alloy plate in this embodiment is completed according to the following steps:
[0017] 1. According to mass fraction: Zn is 5.0%~6.5%, Mg is 1.8%~2.8%, Cu is 1.4%~2.0%, Mn is 0.2%~0.6%, Cr is 0.1%~0.25%, Fe is 0.05% ~0.25%, Si≤0.1%, Ni≤0.1%, Ti≤0.05%, and the balance is Al Weighing aluminum-zinc master alloy, pure magnesium ingot, electrolytic copper, aluminum-manganese master alloy, aluminum-iron master alloy, aluminum-silicon master alloy Alloy, Al-Ni master alloy, Al-Ti master alloy and pure aluminum ingot;
[0018] 2. Put the weighed aluminum-zinc master alloy, pure magnesium ingot, electrolytic copper, aluminum-manganese master alloy, aluminum-iron master alloy, aluminum-silicon master alloy, aluminum-nickel master alloy, aluminum-titanium master alloy and pure aluminum ingot into the heating device Melting at 700°C to 750°C for 5h to 7h to obtain molten aluminum alloy; casting the mo...
specific Embodiment approach 3
[0024] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the heating device described in Step 2 is a reverberatory furnace or an intermediate frequency induction furnace.
[0025] Other steps are the same as in the second embodiment.
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Abstract
The invention discloses a 7B04-T7451 aluminum alloy plate and a preparation method thereof, and relates to the technical field of plate manufacturing. The invention aims to solve the problem that the 7B04 alloy T7451 state plate production technology is blank in China at present. The method comprises the following steps that surface treatment is performed on an aluminum alloy ingot, the aluminum alloy ingot is sawn and then placed into a heating device, is heated and is subjected to heat preservation, and a heat-preserved aluminum alloy long plate is obtained; the aluminum alloy cast ingot obtained after heat preservation is rolled, and a rolled aluminum alloy long plate is obtained; and the rolled aluminum alloy long plate is subjected to length fixed-length shearing, then solid solution quenching is carried out, straightening and stretching are carried out after solid solution quenching, then aging treatment is carried out, and finally saw cutting is carried out, so that the 7B04-T7451 aluminum alloy plate is obtained. The 7B04-T7451 aluminum alloy plate and the preparation method thereof can be obtained.
Description
technical field [0001] The invention relates to the technical field of plate manufacturing, in particular to a 7B04-T7451 aluminum alloy plate and a preparation method thereof. Background technique [0002] 7XXX series aluminum alloys have the characteristics of high specific strength, good hot workability, high corrosion resistance and toughness, and are widely used in important industrial fields such as aerospace, transportation and bridge construction. In the manufacture of spacecraft, 7XXX series aluminum alloys are mainly used to manufacture important parts such as skins, wing ribs, landing gear, and propeller blades. 7B04 aluminum alloy is an earlier and widely used superhard aluminum alloy. At present, the supply state of 7B04 alloy thick-gauge plates sold in the domestic market is mainly in the T651 state, and the country does not yet have a mature manufacturing process for aluminum alloy plates in the 7B04-T7451 state. [0003] Therefore, in order to make up for th...
Claims
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