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    乐天堂棋牌正版什么材质的比较好用?
    发布来源:http://affordabLe-Louisvuittonbags.com/  2019-5-29 15:04:51 发布人:济南坚固fun88安装

      要问fun88安装轧辊用什么材料更好,当然还是fun88安装轧辊厂家更了解的,今天跟大家一起来看看fun88安装轧辊用什么材料更好?

      To ask what is the best material for color steel rolls, of course, or what is the best material for color steel rolls manufacturers know. Today, let's see with you what is the best material for color steel rolls.

      1. 钢板基材颜色可以选择体积或热浸镀钢铁的生产,尽管乐天堂棋牌正版卷的一部分有机涂层具有良好的耐蚀性,但仍有一个小缺口有机涂料、空气和水可能进入,反过来,可能生锈的基础材料,所以没有涂层基质制成的彩色钢板,使用寿命短,划痕传播很容易导致涂层剥落。乐天堂棋牌正版卷的基材以镀锌钢板或镀锌合金钢为主。

      1. The color of steel sheet can be produced by volume or hot-dipped steel. Although some organic coatings of color steel sheet coil have good corrosion resistance, there is still a small gap in organic coatings, air and water which may enter. Conversely, it may be rusty base materials. Therefore, the color steel sheet without coating matrix has short service life, and scratch propagation can easily lead to coating peeling. The base material of color steel coil is mainly galvanized steel or galvanized alloy steel.

      2. 彩色涂料的生产工艺可分为基材预处理、化学转化膜(非有机金属涂层)和有机非金属涂层。另外,一些生产线有后涂工艺。

      2. The production process of color coatings can be divided into substrate pretreatment, chemical conversion coatings (non-organic metal coatings) and organic non-metallic coatings. In addition, some production lines have post-coating process.

      3.基材预处理:如果镀锌钢板作为基材没有直接进入彩色涂装工艺生产后,在运输过程中可能会出现铁锈(白锈)、粉尘等污染。如果这些不能去除,就会影响油漆的质量。成品彩涂辊的质量及其理化性能与前处理密切相关。另外,镀锌生产后,为了防止锈蚀和油污,涂装前也应将油污清除。

      3. Substrate pretreatment: If galvanized steel sheet is not directly into the production of color painting process, rust (white rust), dust and other pollution may occur during transportation. If these can not be removed, it will affect the quality of paint. The quality and physical and chemical properties of finished color coating rollers are closely related to pretreatment. In addition, after galvanizing production, in order to prevent rust and oil pollution, oil pollution should also be removed before painting.

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      目前比较流行的预处理方法是碱液脱脂。

      At present, the prevailing pretreatment method is alkali degreasing.

      4. 化学转化膜:有两种作用,一是进一步提高防锈性,二是提高基材与涂料的附着力,提高基材的涂料性能。一般有三个步骤:首先磷化,在金属表面形成大量的晶体,然后用磷盐溶液在金属表面形成磷化膜;二是钝化密封,磷化膜仍有一些孔,与铬酸盐和孔点发生化学反应,形成保护膜。三为纯水冲洗,用盐或离子除去水使液体失活。

      4. Chemical conversion film: There are two functions: one is to further improve the anti-rust property, the other is to improve the adhesion between the base material and the coating, and to improve the coating performance of the base material. Generally, there are three steps: first, phosphating, forming a large number of crystals on the metal surface, and then using phosphate solution to form a phosphating film on the metal surface; second, passivation and sealing, the phosphating film still has some holes, and reacts with chromate and pore points to form a protective film. Third, rinse with pure water and deactivate the liquid by removing water with salt or ion.

      5. 有机涂料:有机涂料可分为底漆和面漆,底漆要求不高,可以顺涂,但现在为了保证安全生产,通常是逆涂底漆。后涂工艺:后涂工艺包括印刷、压花、剥落保护膜、贴合等工序,提高了乐天堂棋牌正版的装饰和保护性能。另外,一些国外涂装工艺和调平矫直在冷轧、镀锌生产线上采用的工艺。

      5. Organic coatings: Organic coatings can be divided into primer and topcoat. Primer requirements are not high and can be applied smoothly. But now, in order to ensure safe production, reverse primer is usually used. Post-coating process: The post-coating process includes printing, embossing, peeling protective film, fitting and other processes, which improves the decoration and protection performance of color steel plate. In addition, some foreign painting processes and leveling and straightening processes are used in cold rolling and galvanizing production lines.