| 摘要 |
PURPOSE: An aluminum alloy selective reagent set is provided to minimize time and cost by allowing aluminum alloy to be selected in an easy manner. CONSTITUTION: A reagent set includes a mixture solution of 10 to 20% NaOH and 10 to 20% NaClO3 as a first reagent, 6 to 8% HF solution as a second reagent, 1 to 2% NaOH solution as a third reagent, and 0.1 to 0.5% CuCl2 solution as a fourth reagent. An aluminum alloy with a surface changed into black after test of the first reagent is classified as 7000:Al-Zn line alloy. An aluminum alloy with a surface changed into black after test of the second reagent is classified as 2000:Al-Cu line alloy. An aluminum alloy with a surface changed into gray after test of the first reagent, white after test of the second reagent, and dark blue-brown after test of the mixture of third and fourth reagents, is classified into 3000:Al-Mn line alloy. An aluminum alloy with a surface changed into white after test of the first reagent, white after test of the second reagent, and dark blue-brown after test of the mixture of third and fourth reagents, is classified into 1000:non-alloy or 6000:Al-Mg-Si line alloy. An aluminum alloy with a surface changed into gray-white after test of the first reagent, white after test of the second reagent, and dark blue-gray after test of the mixture of third and fourth reagents, is classified into 5000:Al-Mg line alloy.
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