First of all, it is necessary to test and confirm the strength and elongation of the aluminum plate to see if it is in the H32 state. Because the 5052H32 aluminum plate can generally meet 90-degree bending and shallow stretching, stamping requires no cracking. But if it is deep stretched, it may still crack.

According to the material, the bending performance of duralumin and forged aluminum is not good. Secondly, according to the state of the aluminum plate, the bending performance of the unstrengthened aluminum plate (usually O state) is good. Good bending performance, give two examples: pure aluminum plate, anti-rust aluminum (5XXX, 6XXX). The bending performance of 5052 is good.

5052 aluminum sheet can be bent, which is characterized by good plasticity after solution treatment, particularly good heat treatment strengthening effect, high strength below 150°C, and particularly good low temperature strength; poor welding performance; tendency to stress corrosion cracking; It needs to be covered with aluminum or other protective treatment.

There are several reasons for cracking. First, the strength of the aluminum plate is too high and it will crack when processed. Check and confirm the strength and elongation of the aluminum plate to see if it is in the H32 state. 2. 5052H32 aluminum plate can generally meet the requirements of 90-degree bending, shallow stretching and stamping without cracking. If it is deep drawing, it will crack. Second, the chemical composition of the aluminum plate is unqualified, and the impurity alloy exceeds the standard.

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