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鋁卷成卷前的處理工作是怎樣的?

來源:http://www.whidbeyartsource.com  發布時間:2021-09-25 15:26:13  

鋁卷在成卷之前,需求做一些預處理工段,以保證鋁卷表面的干凈。免得其表面存在殘留的油脂及光滑劑,對涂裝及運用發生影響。所以,鋁卷在成型前要對它進行下面幾個方面的預處理。
Before the aluminum coil is rolled, some pretreatment sections need to be done to ensure the cleanness of the surface of the aluminum coil. In order to avoid residual grease and smoothing agent on the surface, which will affect the coating and application. Therefore, the aluminum coil should be pretreated in the following aspects before forming.
首先,不妨運用熱水對鋁卷進行洗刷。熱水洗刷主若是將基板表面殘留的脫脂劑洗刷干凈,保證這些殘留物能溶解當中,以防這些脫脂劑對基板形成二次污染。運用方式多為浸洗和噴淋刷洗的方式。所用水質硬度不要很高,不然,水中的礦物質會在基板表面生成礦斑。
First of all, you might as well use hot water to wash the aluminum roll. Hot water washing is mainly used to clean the degreasing agent remaining on the surface of the substrate to ensure that these residues can be dissolved, so as to prevent these degreasing agents from secondary pollution to the substrate. The application methods are mostly immersion washing and spray brushing. The hardness of the water used should not be very high, otherwise the minerals in the water will form mineral spots on the surface of the substrate.


其次,熱堿脫脂由于預涂線線速較快,所以所用的脫脂劑通常濃度較高,典型的脫脂劑含有氫氧化鈉(NaOH)、碳酸鈉(Na2Co3)、水玻璃(Na2SiO3)、磷酸鹽等組份。熱堿脫脂工序通常分兩步處理以確保鋁卷基板表面洗刷干凈,且多用噴淋刷洗的方式。
Secondly, due to the fast line speed of precoating, the degreaser used for hot alkali degreasing usually has a high concentration. The typical degreaser contains sodium hydroxide (NaOH), sodium carbonate (Na2CO3), sodium silicate (Na2SiO3), phosphate and other components. The hot alkali degreasing process is usually divided into two steps to ensure that the surface of aluminum coil substrate is cleaned, and spray brushing is often used.
再次,對它進行鈍化處理。鈍化處理是經過加壓噴淋、浸涂或輥涂等方式使鈍化劑在基材表面形成轉化膜。通常運用加壓噴淋的方式,鈍化液在運用過程中發生的泥渣往往會擁塞噴孔,從而影響噴淋得功效。
Thirdly, passivate it. Passivation treatment is to form a conversion film on the surface of the substrate by means of pressurized spraying, dip coating or roll coating. Generally, pressurized spraying is used, and the sludge generated during the application of passivation solution often congests the spray hole, thus affecting the spraying effect.
浸涂的方式盡管處理了這一問題,但鈍化液的打發量較大。以上兩種方式在本質操縱中都需求用水清洗有余的鈍化液,就會發生廢水的收回和凈化問題,輥涂是好的鈍化施工方式,擁有涂布平均、經濟適用、不需淋洗等優勢。鋁板通常選用鉻酸鹽/氧化物型處理劑,該類處理劑含有鉻酸鹽、鉻酸、磷酸及促成劑氟化物和鉬酸鹽。該類處理劑一定加入磷酸,不然就不能用來處理食物和飲料用鋁板。
Although the dip coating method solves this problem, the amount of passivation solution is large. The above two methods require water to clean the surplus passivation solution in the essential operation, which will lead to the recovery and purification of wastewater. Roller coating is a good passivation construction method, which has the advantages of average coating, economic applicability and no leaching. Chromate / oxide type treatment agent is usually selected for aluminum plate, which contains chromate, chromic acid, phosphoric acid and promoter fluoride and molybdate. This kind of treatment agent must be added with phosphoric acid, otherwise it can not be used to treat aluminum plate for food and beverage.
從悉數市場狀況來看,人們對與高端產物的需求仍然在不停增添的,相當抵制哪些冒充偽劣產物,而鋁卷也將會成為咱們所需產物的一部分,是它讓咱們的產物更美麗、更高級。鋁卷在電子、包裝、建筑、機械等方面得到了管飯的使用。將來的發展中鋁卷還可以占據一部分市場的,鋁卷制作廠家也會逐步增多,產物的競爭到會歸結為技藝競爭和品牌競爭。
Judging from all the market conditions, people's demand for high-end products is still increasing, which is quite resistant to fake and shoddy products, and aluminum coil will also become a part of the products we need, which makes our products more beautiful and advanced. Aluminum coil has been used in electronics, packaging, construction, machinery and so on. In the future development, aluminum coil can also occupy a part of the market, and the manufacturers of aluminum coil will gradually increase. The competition of products will come down to skill competition and brand competition.

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