Anti-fatigue and corrosion-resistant forged Al-Mg-Si-Zr aluminum alloy wheel and preparation method thereof
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A technology for corrosion-resistant aluminum alloys and aluminum alloys, applied in the field of forging aluminum alloys, can solve the problems of poor corrosion resistance and fatigue resistance, and achieve the effects of enhancing fatigue resistance and corrosion resistance, avoiding fatigue cracks, and improving hardness
Pending Publication Date: 2022-08-09
山东骏程金属科技有限公司 +1
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[0004] Aiming at the problems existing in the application process of automobile wheels in the prior art, the purpose of the present invention is to solve the problems of poor fatigue resistance and poor corrosion resistance in the actual application process of automobile wheels, and to provide an anti-fatigue and corrosion-resistant Forged Al-Mg-Si-Zr aluminum alloy wheels
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Embodiment 1
[0039]An anti-fatigue and anti-corrosion forged Al-Mg-Si-Zr aluminum alloy wheel, the element composition is: Si: 0.70%, Mg: 1.1%, Cu: 0.28%, Fe: 0.21%, Mn: 0.12%, Cr: 0.3%, Ti: 0.02%, Zr: 0.08% and balance Al.
[0040] The specific implementation method is as follows:
[0041] (1) Ingredients: Weigh pure aluminum water, pure aluminum ingot, aluminum-silicon alloy ingot, pure magnesium ingot, pure copper ingot, pure zinc ingot, aluminum-zirconium alloy ingot, aluminum-titanium alloy ingot and aluminum-titanium ingot according to the mass percentage of the elements. Boron wire is smelted to obtain aluminum alloy melt;
[0042] (2) Preparation of round cast rods: Preparation of round cast rods: the aluminum alloy melt is set at 750℃-780℃, the casting speed is 35mm / min~60mm / min, the cooling water strength is 0.04MPa~0.08MPa and the cooling water temperature is Under the condition of 20℃~40℃, cast into a round cast rod with a diameter of 254mm and a length of 6000mm;
[0043] (...
Embodiment 2
[0055] An anti-fatigue and anti-corrosion forged Al-Mg-Si-Zr aluminum alloy wheel, the element composition is: Si: 0.78%, Mg: 1.15%, Cu: 0.32%, Fe: 0.24%, Mn: 0.13%, Cr: 0.25%, Ti: 0.05%, Zr: 0.12% and balance Al.
[0056] The preparation method is the same as in Example 1
Embodiment 3
[0058] An anti-fatigue and anti-corrosion forged Al-Mg-Si-Zr aluminum alloy wheel, the element composition is: Si: 0.75%, Mg: 1.13%, Cu: 0.30%, Fe: 0.22%, Mn: 0.12%, Cr: 0.26%, Ti: 0.03%, Zr: 0.10% and balance Al.
[0059] The preparation method is the same as in Example 1.
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Abstract
The invention belongs to the technical field of forged aluminum alloy, and particularly relates to an anti-fatigue and corrosion-resistant forged Al-Mg-Si-Zr aluminum alloy wheel and a preparation method thereof. The aluminum alloy wheel is composed of Si, Mg, Cu, Fe, Mn, Cr, Ti, Zr and the balance Al. The aluminum alloy material is forged by optimizing alloy components, carrying out graded homogenization treatment on a cast rod and adopting an optimized aluminum rod heating process and a solid solution and aging process after die forging, the fatigue performance can be circulated for about 7 * 107 weeks under the pressure of 200 Mpa, and the stripping corrosion resistance reaches the PA level. In addition, the tumbling process and the surface treatment process are added, the fatigue resistance and the corrosion resistance of the aluminum alloy wheel are further enhanced, the requirement of a wheel biaxial fatigue test is met, and the requirement of an international first-class main engine plant is met.
Description
technical field [0001] The invention belongs to the technical field of forged aluminum alloys, in particular to a fatigue-resistant and corrosion-resistant forged Al-Mg-Si-Zr aluminum alloy wheel and a preparation method thereof. Background technique [0002] Wheels are an important part of automobiles, and lightweight is the development trend of future automobiles. Forged aluminum alloy wheels have advantages in realizing automobile lightweighting, energy saving and emission reduction. Wheels are also the key parts and safety parts of the car. If the wheels are fatigued and cracked when the car is running at high speed, the car will be destroyed in light, and people will be killed in heavy. Therefore, while the wheels are lightweight, they also need to ensure sufficient mechanical properties and fatigue resistance. The existing forged aluminum alloy material, the fatigue performance can only cycle N=8x10 under the specified stress level σ=200Mpa 6 Left and right cycles, t...
Claims
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