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怎么判斷花紋板的質量好壞?

  有0人瀏覽   日期:2019-11-05

文章摘要: 花紋板......

怎樣判斷花紋板的質量好壞?


  1. 首先,我們在看鋁板的時候,首先要停止標識檢查:鋁合金型材和包裝上能不能標注產品合格證和消費許可證號等。

  One. First of all, when we look at the aluminum plate, we should first stop the identification inspection: whether the product qualification certificate and consumption license number can be marked on the aluminum alloy profile and packaging.

  2.外觀質量:除清潔外,鋁合金型材不允許出現裂紋、剝落、腐蝕、氣泡等缺陷,不允許出現腐蝕斑、電灼傷(氧化電極點)、黑點、氧化膜等缺陷。這還取決于鋁型材的顏色和光澤以及是否存在色差。顏色越深,含有的雜質越多。

  2. Appearance quality: in addition to cleaning, no crack, peeling, corrosion, bubble and other defects, no corrosion spot, electric burn (oxidation electrode point), black spot, oxide film and other defects are allowed for aluminum alloy profiles. It also depends on the colour and gloss of the aluminium profile and whether there is a colour difference. The darker the color, the more impurities it contains.

  3.氧化膜厚度:陽極氧化鋁型材的氧化膜是通過鋁型材兩端和酸堿溶液通電而形成的。它具有保護和裝飾作用,可由渦流測厚儀停止普通氧化膜厚度在8~15μm之間。氧化膜越厚,其耐腐蝕性越高,氧化成本越高。

  Three. Thickness of oxide film: the oxide film of anodized aluminum profile is formed by electrifying both ends of aluminum profile and acid-base solution. It has the function of protection and decoration. The thickness of common oxide film can be stopped between 8 and 15 μ m by eddy current thickness gauge. The thicker the oxide film, the higher the corrosion resistance and the higher the oxidation cost.

  4.封孔質量:陽極氧化后,鋁型材外表面有許多縫隙。如果密封不停止或不好,鋁型材的耐腐蝕性就會降低。常用的封孔質量檢測方法有酸浸法、導納法和磷酸丁酸法。酸浸法是現場檢測中常用的方法。鋁型材外表面用丙酮擦洗干凈,去除油污和灰塵,外表面滴入體積比為50%的硝酸,輕輕擦洗,1分鐘后用清水沖洗干凈。然后擦干。往表面滴一滴醫用紫羅蘭1分鐘后,擦去紫羅蘭色并徹底清潔表面。仔細檢查留下的痕跡。封孔不好的鋁型材會留下明顯的痕跡。痕跡越重,封孔質量越差。

  Four. Sealing quality: after anodizing, there are many cracks on the outer surface of aluminum profile. If the seal does not stop or is not good, the corrosion resistance of the aluminum profile will be reduced. The commonly used methods of sealing quality are acid leaching, admittance and phosphoric acid butyric acid. Acid leaching is a common method in field detection. The outer surface of the aluminum profile shall be cleaned with acetone to remove oil and dust. The outer surface shall be dripped with nitric acid with volume ratio of 50%. The aluminum profile shall be cleaned with clean water after 1 minute. Then dry. Drop a drop of medical violet on the surface for 1 minute, wipe off the violet color and thoroughly clean the surface. Check the traces carefully. The aluminum profile with poor hole sealing will leave obvious traces. The heavier the trace, the worse the sealing quality.

  5.硬度:普通牌號6063鋁型材硬度在8~12hw之間,用維氏硬度計測定。影響鋁合金型材硬度的主要原因有兩個:?原始數據中雜質太多,人工時效的溫度和時間控制不好。

  5. Hardness: the hardness of ordinary 6063 aluminum profile is between 8-12hw, measured by Vickers hardness tester. There are two main reasons that affect the hardness of aluminum alloy profiles? There are too many impurities in the original data, so the temperature and time of artificial aging are not well controlled.

  6.耐腐蝕性:該指標主要影響鋁型材的使用壽命。耐腐蝕性檢驗包括銅加速乙酸鹽霧試驗和堿滴試驗。介紹了堿滴試驗。即,在35℃1℃下,將約10mg和100g/L NaOH溶液滴在鋁型材外部,目視檢查液滴是否發生腐蝕,并計算其氧化膜的穿透時間。這個測試很容易在夏天停止戶外的粗步判斷。為了保證檢測的準確性,必須在嚴格的實驗室要求下停止檢測。

  6. Corrosion resistance: this index mainly affects the service life of aluminum profiles. Corrosion resistance test includes copper accelerated acetic acid salt spray test and alkali drop test. The alkali drop test is introduced. That is, at 35 ℃ and 1 ℃, drop about 10mg and 100g / L NaOH solution on the outside of the aluminum profile, visually check whether the drop corrodes, and calculate the penetration time of its oxide film. It's easy for this test to stop rough outdoor judgment in the summer. In order to ensure the accuracy of testing, testing must be stopped under strict laboratory requirements.

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