鋁卷在成卷之前，需求做一些預(yù)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(duì)涂裝及運(yùn)用發(fā)生影響。所以，鋁卷在成型前要對(duì)它進(jìn)行下面幾個(gè)方面的預(yù)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.
，不妨運(yùn)用熱水對(duì)鋁卷進(jìn)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(dāng)中，以防這些脫脂劑對(duì)基板形成二次污染。運(yùn)用方式多為浸洗和噴淋刷洗的方式。所用水質(zhì)硬度不要很高，不然，水中的礦物質(zhì)會(huì)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(yù)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(duì)它進(jìn)行鈍化處理。鈍化處理是經(jīng)過(guò)加壓噴淋、浸涂或輥涂等方式使鈍化劑在基材表面形成轉(zhuǎn)化膜。通常運(yùn)用加壓噴淋的方式，鈍化液在運(yùn)用過(guò)程中發(fā)生的泥渣往往會(huì)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(wèn)題，但鈍化液的打發(fā)量較大。以上兩種方式在本質(zhì)操縱中都需求用水清洗有余的鈍化液，就會(huì)發(fā)生廢水的收回和凈化問(wèn)題，輥涂是好的鈍化施工方式，擁有涂布平均、經(jīng)濟(jì)適用、不需淋洗等優(yōu)勢(shì)。鋁板通常選用鉻酸鹽/氧化物型處理劑，該類(lèi)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(lèi)處理劑一定加入磷酸，不然就不能用來(lái)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(shù)市場(chǎng)狀況來(lái)看，人們對(duì)與高端產(chǎn)物的需求仍然在不停增添的，相當(dāng)?shù)种颇男┟俺鋫瘟赢a(chǎn)物，而鋁卷也將會(huì)成為咱們所需產(chǎn)物的一部分，是它讓咱們的產(chǎn)物更美麗、更高級(jí)。鋁卷在電子、包裝、建筑、機(jī)械等方面得到了管飯的使用。將來(lái)的發(fā)展中鋁卷還可以占據(jù)一部分市場(chǎng)的，鋁卷制作廠家也會(huì)逐步增多，產(chǎn)物的競(jìng)爭(zhēng)到會(huì)歸結(jié)為技藝競(jìng)爭(zhēng)和競(jìng)爭(zhēng)。
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.