日本h番全彩无遮挡h工口-国产精品无码无片在线观看3d-四虎国产成人永久精品免费-广东少妇大战黑人34厘米视频-人人妻人人狠人人爽天天综合网

當前位置:首頁-新聞資訊

鋁卷生產廠家講解鋁卷在成卷前的準備工作

來源:http://www.kangyanghua.com/ 發布時間:2020-11-05

鋁卷在成卷之前,需要做一些預處理工段,以保證鋁卷表面的清潔。以免其表面存在殘留的油脂及潤滑劑,對涂裝及使用產生影響。所以,鋁卷在成型前要對它進行以下幾個方面的額預處理。
Before the aluminum coil is rolled, some pretreatment sections are needed to ensure that the surface of the aluminum coil is clean. In order to avoid the existence of residual grease and lubricant on its surface, which will affect the coating and use. Therefore, aluminum roll in the following aspects of the amount of pre-treatment.
一,可以使用熱水對鋁卷進行清洗。熱水清洗主要是將基板表面殘留的脫脂劑清洗干凈,保證這些殘留物能溶解其中,以防這些脫脂劑對基板造成二次污染。使用方式多為浸洗和噴淋刷洗的方式。所用水質好硬度不要太高,否則,水中的礦物質會在基板表面生成礦斑。
1、 The aluminum coil can be cleaned with hot water. Hot water cleaning is mainly to clean the residual degreasing agent on the surface of the substrate, so as to ensure that these residues can be dissolved, so as to prevent the secondary pollution of the substrate caused by these degreasers. The usage is mostly immersion and spray brushing. The best water quality should not be too high hardness, otherwise, minerals in water will form mineral spots on the surface of the substrate.
二,熱堿脫脂由于預涂線線速較快,所以所用的脫脂劑一般濃度較高,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。熱堿脫脂工序一般分兩步處理以確保鋁卷基板表面清洗干凈,且多用噴淋刷洗的方式。
2、 Due to the fast linear speed of precoating line, the degreasing agent used in hot alkali degreasing is generally high. The typical degreasing agent contains sodium hydroxide (NaOH), sodium carbonate (Na2CO3), sodium silicate (Na2SiO3), phosphate and other components. The hot alkali degreasing process is generally divided into two steps to ensure that the surface of aluminum coil substrate is clean, and spray brushing is often used.

 


三,對它進行鈍化處理。鈍化處理是通過加壓噴淋、浸涂或輥涂等方式使鈍化劑在基材表面形成轉化膜。一般使用加壓噴淋的方式,鈍化液在使用過程中產生的泥渣往往會堵塞噴孔,從而影響噴淋得效果。浸涂的方式雖然解決了這一問題,但鈍化液的消耗量較大。以上兩種方法在實際操作中都需要用水沖洗多余的鈍化液,就會產生廢水的回收和凈化問題,輥涂是好的鈍化施工方式,具有涂布均勻、經濟實用、不需淋洗等優點。鋁板一般采用鉻酸鹽/氧化物型處理劑,該類處理劑含有鉻酸鹽、鉻酸、磷酸及促進劑氟化物和鉬酸鹽。該類處理劑必須加入磷酸,否則就不能用來處理食品和飲料用鋁板。
3、 It is passivated. Passivation treatment is to form conversion film on the surface of substrate by pressure spray, dip coating or roller coating. Generally, pressurized spray is used. Sludge produced in the process of passivation liquid often blocks the spray hole, thus affecting the spray effect. Although dip coating can solve this problem, the consumption of passivation solution is large. The above two methods need to wash the excess passivation liquid with water in actual operation, which will lead to the problem of wastewater recovery and purification. Roller coating is the best passivation construction method, which has the advantages of uniform coating, economic and practical, and no need of washing. Generally, chromate / oxide type treatment agent is used for aluminum plate, which contains chromate, chromic acid, phosphoric acid and accelerant fluoride and molybdate. Phosphoric acid must be added to this kind of treatment agent, otherwise it can not be used to treat aluminum plate for food and beverage.

主站蜘蛛池模板: 丁字裤少妇露黑毛| 麻豆av一区二区三区久久| 久久99热只有频精品8| av无码精品一区二区三区| 国产精品久久久久aaaa| 无码乱人伦一区二区亚洲一 | 亚洲人成中文字幕在线观看| 国产精品无码专区av在线播放| 超碰97人人做人人爱少妇| 精品一区二区三区四区五区六区 | 吃奶摸下的激烈视频| 亚洲av色影在线| 久久久亚洲av成人网站| 国产成人无码av在线播放dvd| 久久精品中文无码资源站| 亚洲精品无码国产| 午夜一区欧美二区高清三区| 久久久久亚洲av无码永不| 日韩精品成人一区二区三区| 国产精品videossex久久发布| 久久精品国产精品| 亚洲第一最快av网站| 免费两性的视频网站| 免费国产a国产片高清| 国产精品视频一区二区噜噜| 后入内射欧美99二区视频| 午夜射精日本三级| 国产性一交一乱一伦一色一情| 少妇精品导航| 性激烈的欧美三级视频| 污污内射久久一区二区欧美日韩 | 国产精品久免费的黄网站| 成全视频在线观看高清动漫| 人妻暴雨中被强制侵犯在线| 欧美丰满熟妇乱xxxxx图片| 日产精品一二三区| 久久无码高潮喷水抽搐| 国色天香成人网| 人妻无码一区二区三区| 成av人片一区二区三区久久| 欧美亚洲国产一区二区三区|