白带有黄色渣渣是什么问题,優質欧美成人爽爽爽视频,中文字幕一区不卡在线,欧美日韩在线精品一区二区

當(dāng)前位置:首頁(yè)-新聞資訊

鋁卷成卷前的處理工作是怎樣的?

來(lái)源:http://www.menguosenlin.cn/ 發(fā)布時(shí)間:2021-04-20

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。
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(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 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(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。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。
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(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(lái)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.

国产午夜精品理论片A级漫画-久久精品国产99亚洲精品| av网址在线直接观看-黄色av全部在线观看| 亚洲永久免费在线观看-亚洲欧美导航一区二区导航| 国产一区二区三区噜噜-精品久久亚洲一区二区欧美| 国产一区二区三区四区五区麻豆-欧美一级在线视频播放| 日韩高清在线观看一区二区-美产av在线免费观看| 亚洲欧美日韩国产一区二区三区-国产欧美日韩一区二区免费| 中文字幕亚洲综合久久最新-久久精品视频免费久久久| 性色国产成人久久久精品二区三区-偷窥中国美女洗澡视频| 亚洲国产中文欧美一区二区三区-国产精品一区二区视频成人| 青青操大香蕉在线播放-国产亚洲欧美精品在线观看| 91精品国产影片一区二区三区-欧美精品久久久精品一区二区| 性色国产成人久久久精品二区三区-偷窥中国美女洗澡视频| 欧美一区二区三区调教视频-三上悠亚国产精品一区二区三区| 中文字幕人妻少妇第一页-隔壁的女孩在线看中文字幕| 亚洲av日韩五月天久热精品-国产日韩欧美一区二区三区群战| 熟女少妇免费一区二区-麻豆一区二区三区免费在线观看| 蜜臀av日日欢夜夜爽一区-av在线免费永久播放| 国产一区二区三区四区五区麻豆-欧美一级在线视频播放| 丝袜美腿人妻连续中出-在线观看日韩三级视频| 亚洲一区精品一区在线观看-日本久久久一区二区三区| 中文字幕日韩不卡久久-五月天中文字幕啊av| 日本中文字幕啊啊啊啊-久久精品伊人久久精品伊人| 一区二区三区国产高清mm-美女张开腿让帅哥桶爽| 99在线观看精品视频免费-国产极品一区二区三区四区| 黑丝av少妇精品久久久久久久-中文字幕久久久人妻无码| 少妇一区二区三区粉嫩av-国产精品区久久久久久久| 青青草原免费国产在线视频-精品人妻乱码一区二区三区四区| 韩漫一区二区在线观看-精品国产免费未成女一区二区三区| 亚洲区欧美区在线视频-亚洲碰碰人人AV熟女天堂| 亚洲一区二区少妇激情-国产精品美女久久高潮| 亚洲精品一区网站在线观看-黄页视频免费观看网站| 国产精品久久99精品毛片-国产四季高清一区二区三区| 中文字幕社区电影成人-欧美精美视频一区二区三区| 亚洲精品在线观看一二三区-在线观看国产中文字幕视频| 国产高清av免费在线观看-黄片毛片大全一区二区三区| 中文字幕日韩精品不卡在线一区-国产tv日韩在线观看视频| 日本韩国亚洲欧美三级-日本东京不卡网一区二区三区| 日韩高清在线观看一区二区-美产av在线免费观看| 婷婷六月视频在线观看-久久亚洲综合国产精品| 久久精品人妻一区二区三区极品-久久99热这里只有精品免费|