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怎樣分辨鋁合金型材是否合格

鋁合金型材可以分爲生鋁與熟鋁，生鋁是98%以下的鋁，性質比較的脆硬，只能翻砂鑄造産品；熟鋁是98%以上的鋁，它的性質柔軟，可以壓延或許沖軋很多種器皿。

1、化学成分的不合格，在产品中掺杂很多的杂铝和废铝的鋁合金型材它的本钱会大大的削减，但是它会导致修建鋁合金型材的化学成分不合格，严峻的还会危及到修建工程的安全。

2、残次的鋁合金型材会很多的削减封闭的时间，一起也削减了化学试剂的损耗，本钱降了，但是型材的耐腐蚀性能也大大的降低了。

3、氧化膜的厚度薄。国家标准规则修建鋁合金型材的氧化膜厚度应该不小于10um。假如厚度不够，那么鋁合金型材的表面就容易锈蚀、腐蚀。据专家的预算每削减1um的氧化膜厚度，那么每吨型材至少可削减电耗本钱150多元。

不合格的鋁合金型材，在使用的时候会由于空气、雨水还有阳光等影响，会导致鋁合金型材的变形，乃至还会形成玻璃的破裂还有脱落等现象。

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