日本不卡二区,夜夜高潮夜夜爽高清完整版1,丁香成人免费视频,欧美日本高清

當前位置:首頁-新聞資訊

如何做好鋁卷成卷前的準備工作?

來源:http://m.igugo.cn/ 發(fā)布時間:2021-07-01

從悉數(shù)市場狀況來看,人們對與產(chǎn)物的需求仍然在不停增添的,相當?shù)种颇男┟俺鋫瘟赢a(chǎn)物,而鋁卷也將會成為咱們所需產(chǎn)物的一部分,是它讓咱們的產(chǎn)物更美麗。鋁卷在電子、包裝、建筑、機械等方面得到了管飯的使用。
Judging from all the market conditions, people's demand for products is still increasing, which are quite resistant to fake and shoddy products, and aluminum coil will become a part of the products we need, which makes our products more beautiful. Aluminum coil is widely used in electronics, packaging, construction, machinery, etc.
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(fā)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。
In order to ensure the cleanness of the surface of the aluminum coil, some pretreatment sections should be done before the coil is formed. So as to avoid the residual grease and smooth agent on the surface, which will affect the coating and application. Therefore, aluminum coil should be pretreated in the following aspects before forming.
,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(zhì)硬度不要很高,不然,水中的礦物質(zhì)會在基板表面生成礦斑。
First of all, you might as well use hot water to wash the aluminum coil. Hot water scrubbing is mainly to clean the residual degreaser on the surface of the substrate, to ensure that these residues can be dissolved, so as to prevent the secondary pollution of the substrate caused by these degreasers. The application methods are mostly immersion 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 speed of precoating line, the degreaser used in 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 washed clean, and spray brushing is often used.
再次,對它進行鈍化處理。鈍化處理是經(jīng)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(zhuǎn)化膜。通常運用加壓噴淋的方式,鈍化液在運用過程中發(fā)生的泥渣往往會擁塞噴孔,從而影響噴淋得功效。浸涂的方式盡管處理了這一問題,但鈍化液的打發(fā)量較大。
Thirdly, it was passivated. Passivation treatment is to form a conversion film on the surface of substrate by pressure spraying, dip coating or roll coating. The sludge generated in the process of using passivation solution will often jam the spray hole, thus affecting the spray efficiency. Although the dip coating method can solve this problem, the amount of passivation solution is large.
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,就會發(fā)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(jīng)濟適用、不需淋洗等優(yōu)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。
Both of the above two methods need water to clean the excess 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 application and no washing. Chromate / oxide type treatment agent is usually used for aluminum plate, which contains chromate, chromic acid, phosphoric acid and promoters fluoride and molybdate. This kind of treatment agent must be added phosphoric acid, otherwise it can not be used to deal with food and drink aluminum plate.

午夜大秀场美女裸体视频| 成年人操bb| 西野翔综合久久中文字幕| 中文人妻久久久久久| 无码码免费麻豆| 夜夜性夜夜爽| 超碰久在热| 日韩精品中文字幕不卡一区二区在线| 又粗又长又黄视频| 欧美成年人网| 日韩精品一区二区久久久久爆乳| 国产欧美韩在线| 亚洲自拍偷拍精品| 国内美女诱惑久久久久久免费| 亚洲一区二区三区午夜福利| 九九中文字幕在线| 好吊色| 好屌妞这里有只精品| 五月丁香国产精品日韩欧美| 今婷5月天在线观看视频| 日韩免费久久视频| 色综合久久无道道| 欧美特一级a欧美黑人特一级a| 少妇霸气久久久| 十八女人毛片天堂| 伦理聚合pdy一区二区热门91| 日本无码久久九| the porn亚洲一区二区| 久久AV高潮AV高潮| 色AV影院| 少妇AV。| 操逼人妻大鸡巴| 九九精品一级二级三级| 一区二区无码毛片| 夜色av| 九九成人一级黄色片| 最近高清中文字幕免费AV| 色色综合91AV线上线下| 天天干天天干熟女干| 抽插免费视频一区二区| 熟女吧一区二区三区|