鋁卷是鑄軋機經過壓延，拉彎角加工后，進行飛剪的金屬產品，它的表面有一層氧化膜，可以起到很好的保護卷材的作用，但有時我們會發現氧化膜存在顏色不均的情況。這是怎么回事呢？下面，鋁卷加工廠家就給大家簡單介紹一下卷材表面氧化膜不均勻的原因及預防方法吧。
Aluminum coil is a metal product that is processed by casting and rolling mill after rolling and angle bending and flying shear. Its surface has a layer of oxide film, which can play a good role in protecting the coil. However, sometimes we find that the oxide film has uneven color. What's the matter? Next, the aluminum coil processing manufacturer will briefly introduce the causes and prevention methods of uneven oxide film on the surface of the coil.
1、工藝操作在工件堿性蝕刻處理不完整，原本的氧化膜部分存在污垢；堿性蝕刻后立即處理，表面仍為堿性；在轉移過程中工件接觸異物。
1. The alkaline etching treatment of the workpiece in the process operation is incomplete, and the original oxide film part has dirt; Immediately after alkaline etching, the surface is still alkaline; The workpiece contacts foreign matters during transfer.
預防方法：在生產過程中要嚴格保證合金鋁卷工藝的完整性，才能生產出更好的產品。
Prevention method: During the production process, the integrity of the alloy aluminum coil process must be strictly guaranteed to produce better products.

2、擺動在插槽中工作面積過大，在氧化膜上產生的顏色不一致。
2. The working area of the swing in the slot is too large, and the color produced on the oxide film is inconsistent.
預防方法：氧化工件回轉起伏小，可以安靜的處置，但是當溶液溫度過低時容易出現地圖狀花斑，顯得不自然。
Prevention method: The oxidation workpiece can be handled quietly because of its small fluctuation in rotation, but when the solution temperature is too low, it is easy to appear map-like spots, which appears unnatural.
3、加工包覆層被破壞的部分時，雖然表層是高質量的鋁材料，但是內層卻是雜鋁，二者在質量以及性能上差別比較大，因此氧化后會產生“白癜風”狀斑點。
3. When processing the damaged part of the coating, although the surface layer is made of high-quality aluminum material, the inner layer is made of aluminum. The quality and performance of the two are quite different, so the oxidation will produce "vitiligo" spots.
預防方法：材料嚴格把控，減少或清除雜鋁。
Prevention method: material shall be strictly controlled to reduce or remove aluminum impurities.
以上是對于鋁卷表層氧化膜不均勻的原因及預防方法的介紹，希望可以對您有所幫助。您可以來我們網站http://www.speif.com咨詢了解更多相關的事項！
The above is an introduction to the causes and prevention methods of uneven oxide film on the surface of aluminum coil. I hope it can help you. You can come to our website http://www.speif.com Consult for more relevant matters!