1、就是要看6061铝板是否有明显的变形，表面是否平整光滑，有无裂纹或粗大、划痕、毛刺的地方，如果发现有好不要购买。
　　1. It is to see whether 6061 aluminum plate has obvious deformation, whether the surface is flat and smooth, whether there is crack or rough, scratch or burr. If it is found, it is better not to buy.
　　2、是仔细检查铝合金表面是否有不同色度的颜色，色差意味着质量不合格。当然，你也可以把同类型的型材放在一起比较，当然，如果色差太明显，好不要选择。检查合金铝板的截面厚度是否与标注的型号一致。
　　2. Carefully check whether the surface of aluminum alloy has different color. Color difference means the quality is unqualified. Of course, you can also compare the same type of profiles together, of course, if the color difference is too obvious, it is better not to choose. Check whether the section thickness of the alloy aluminum plate is consistent with the marked model.

　　3中,您可以使用光滑的硬东西划伤的表面合金铝板,将一个白色,6061铝板用手轻轻擦拭,观察,如果你不能抹去,表明材料的质量可能有问题,但是相反,如果你很容易擦掉,表明剖面表面氧化膜的厚度是合格的。

　　In 3, you can use the surface alloy aluminum plate scratched by smooth hard things, wipe a white and 6061 aluminum plate gently by hand, observe, if you can't wipe it off, it indicates that there may be a problem with the quality of the material, but on the contrary, if you easily wipe it off, it indicates that the thickness of the oxygen film on the surface of the profile is qualified.
　　对于市场上质量较差的机械框架合金铝板，消费者可以用一种简单的方法来识别合金铝板，让您在使用时更好。
　　For the mechanical frame aluminum alloy plate with poor quality in the market, consumers can use a simple method to identify the aluminum alloy plate, so that you can use it better.