Aluminum alloy section for automobile bumper as well as preparation method of aluminum alloy section
A technology of aluminum alloy profiles and automobile bumpers, which is applied in the field of aluminum alloy profiles for automobile bumpers and its preparation, can solve the problems of performance not meeting the requirements of use, immature production technology, low production efficiency, etc., and achieve excellent corrosion resistance and welding performance, reduce the weight of the vehicle body, and save production costs
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[0017] Example 1
[0018] A method for preparing aluminum alloy profiles for automobile bumpers includes the following steps:
[0019] (1) Melting: Zn: 6.0%, Mg: 0.9%, Mn: 0.2%, Cu: 0.1%, Cr: 0.1%, Ti: 0.2% by mass percentage, the rest is the proportion of Al and inevitable impurity elements Put into the smelting furnace, Cu, Cr, Mn, Ti are added in the form of master alloy, Mg and Zn are added in the form of pure metal, the order of addition is master alloy, pure Zn, pure Mg, at 730℃-750℃ For smelting, keep the temperature until all the materials are melted to obtain an aluminum alloy solution. During the smelting process, the proportion of each alloy composition is strictly controlled, and the mass percentage of Fe is controlled within <0.15%, the mass percentage of other impurities is controlled below 0.1%;
[0020] (2) Refining: Pour the aluminum alloy melt obtained in step (1) into a static furnace at 730°C, and use the method of blowing argon gas and refining agent together to...
Example Embodiment
[0024] Example 2
[0025] A method for preparing aluminum alloy profiles for automobile bumpers includes the following steps:
[0026] (1) Melting: Zn: 6.3%, Mg: 0.8%, Mn: 0.25%, Cu: 0.12%, Cr: 0.12%, Ti: 0.2% by mass percentage, the rest is the proportion of Al and inevitable impurity elements Put into the smelting furnace, Cu, Mn, Cr, Ti are added in the form of master alloy, Mg and Zn are added in the form of pure metal, the order of addition is master alloy, pure Zn, pure Mg, at 730℃-750℃ For smelting, keep the temperature until all the materials are melted to obtain an aluminum alloy solution. During the smelting process, the proportion of each alloy composition is strictly controlled, and the mass percentage of Fe is controlled within <0.15%, the mass percentage of other impurities is controlled below 0.1%;
[0027] (2) Refining: Pour the aluminum alloy melt obtained in step (1) into a static furnace at 740°C, and use the method of blowing argon gas and refining agent together...
Example Embodiment
[0031] Example 3
[0032] A method for preparing aluminum alloy profiles for automobile bumpers includes the following steps:
[0033] (1) Melting: Zn: 6.2%, Mg: 1.0%, Mn: 0.2%, Cu: 0.15%, Cr: 0.2%, Ti: 0.25% by mass percentage, the rest is the proportion of Al and inevitable impurity elements Put into the smelting furnace, Cu, Mn, Cr, Ti are added in the form of master alloy, Mg and Zn are added in the form of pure metal, the order of addition is master alloy, pure Zn, pure Mg, at 730℃-750℃ Smelting, keep the temperature until all the materials are melted to obtain an aluminum alloy solution. During the smelting process, the proportion of each alloy component is strictly controlled, and the mass percentage of Fe is controlled at <0.15%, the mass percentage of other impurities is controlled below 0.1%;
[0034] (2) Refining: Pour the aluminum alloy melt obtained in step (1) into a static furnace at 740°C, and use the method of blowing argon gas and refining agent together to perform...
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