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(dāng)前位置:首頁-新聞資訊

如何做好鋁卷成卷前的準(zhǔn)備工作?

來源:http://m.igugo.cn/ 發(fā)布時(shí)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(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。鋁卷在電子、包裝、建筑、機(jī)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(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,對涂裝及運(yùn)用發(fā)生影響。所以,鋁卷在成型前要對它進(jìn)行下面幾個(gè)方面的預(yù)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(yùn)用熱水對鋁卷進(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 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(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 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(jìn)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(yùn)用加壓噴淋的方式,鈍化液在運(yùn)用過程中發(fā)生的泥渣往往會(huì)擁塞噴孔,從而影響噴淋得功效。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(huì)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(jì)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.

色情婷婷五月天| 日韩欧美一区二区三区免费观看| GOGOGO高清在线播放免费| 久久一级片全黄色| 97超碰资源站| 日韩欧美在线超碰| 亚洲欧AV在线| 亚洲专区21| a天堂视频在线免费观看| 明星一区二区三区| 国产美腿骚逼| 精品成人一区二区| 九九av污| 99亚洲一区二区综合| 日韩av无码av中文av| 亚洲女同恋中文一区二区| 国产在线777| 麻豆传媒三级在线| 久久久久国产精品区片区无码| 色婷婷肏屄| 三级小说视频区| 日韩欧美一级二级三级| 国产日韩欧美精品| 最新成人不卡| 大香蕉av超碰在线| 激情小说网在线视频| 日韩fc2精品偷拍综合| 亚洲欧美字幕| 日本色熟妇在线观看| 国产欧美国产在线xxxx| 大鸡巴怒操都市熟妇| 色98久久| 内容人妻一区二区| 久久精品国产蜜月| 少妇人妻中出AV| 中文字幕综合久久免费精品| 日韩不卡久久一区不卡视频| 日韩二区三区无码中文| 黄色影片| 且末县| 五月天激情成人图片|