Aluminium alloy for vehicle hub and preparation method thereof
A technology for an automobile wheel hub and a manufacturing method, which is applied in the metal field, can solve the problems of long production cycle, large equipment investment, complex process, etc., and achieves the effects of low production cost, reduction of unfavorable factors, and improvement of purity.
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[0028] The mass percentage of each component of an aluminum alloy for automobile wheels of the present invention is: Zn 4.5-6.3wt%, Mg 1.4-2.5wt%, Cu 0.5-0.9wt%, Zr 0.12-0.3%wt, Ti 0.05-0.15 wt%, Cr 0.05~0.2wt%, Sc 0.1~0.3wt%, and the rest is Al. Each component of the alloy also contains impurity elements with a mass percentage of Si<0.1wt% and Fe<0.2wt%.
[0029] The manufacturing method of the aluminum alloy for automobile wheel hub of the present invention is:
[0030] (1) First, press pure Al 60-84%, industrial pure Mg 1.49-2.66%, industrial pure Zn 4.64-6.49%, AlCu50 master alloy 1.0-1.8%, AlZr15 master alloy 0.8-2.0%, AlTi5B1 master alloy 1.0-3.0 %, 2.5-10% of AlCr2 master alloy and 5-15% of AlSc2 master alloy to weigh the raw materials. Among them, the amount of Mg element burning loss is relatively large, so try to use the upper limit of the composition when weighing;
[0031] (2) Melt pure Al to 760-800°C in a smelting furnace, and then add industrial pure Zn and various ...
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