2021-8-17 09:58| 发布者: steelfu4mo| 查看: 541| 评论: 0 |原作者: 佛山万庆物资
Small home appliance color plate is generally electrogalvanized and cold plate as the substrate, used for the production of refrigerator and large air conditioning system, freezer, bread machine, furniture and so on.Transportation industry is generally with electrogalvanized and cold plate as the substrate, mainly used for oil pan, automotive interior parts, etc.
Foshan Wanqing materials co., LTD. Main home appliances PCM color coating board, VCM coated steel plate, can be used for refrigerator (brushed panel), air conditioning shell (alternative), refrigerator enclosure, casing, washing machine shell, medical refrigerator, electronic wine cabinet, electronic refrigerator side panel, TV back cover, water heater shell, DVD shell, set top box shell, elevator interior decoration, security door, fire door panel, etc., color can be deployed according to user needs.
使用电镀锌板为基板，涂上有机涂料烘烤所得的产品为电镀锌彩涂板，由于电镀锌板的锌层薄，通常含锌量为20/20g/m2，因 此该产品不适合使用在室外制作墙、屋顶等。但因具有美丽的外观和优良的加工性能，因此主要可用于家电、音响、钢家 具、室内装璜等。从防腐机理的角度看，锌、铝在多数大气环境下具有较高的稳定性，利用它作为钢铁基体的防护性涂(镀)层是普遍公认的有效经济的方法，其应用历史已达一百多年。锌在腐蚀环境介质中会形成一层薄且致密的附着性很强的腐蚀产物(氧化锌，氢氧化锌，碱性盐：Zn(OH)2和ZnCl2或ZnCO3)。这些产物覆盖在其表面对周围环境介质起着屏蔽作用，从而阻止进一步腐蚀。此外，锌的电极电位较铁为负，属于阳极性镀层，它具有牺牲自身的保护作用。镀锌层在大气环境中的腐蚀尽管随气候类型的变化发生很大变化(一般在海洋性气候中很严重)，然而在相同的环境条件下，其寿命正比于镀锌层的附着量。美国ASTM发表在《金属手册》中的结果可见欲延长其寿命，可用增加镀锌层厚度的方法来实现。
Using galvanized plate as the substrate, coated with organic paint baking products for galvanized color coating plate, because the zinc layer of galvanized plate, usually contain zinc content of 20 / 20g / m2, so the product is not suitable for use in outdoor production walls, roof, etc.But because of the beautiful appearance and excellent processing performance, so mainly can be used in home appliances, audio, steel furniture, indoor decoration, etc.From the perspective of anti-corrosion mechanism, zinc and aluminum have high stability in most atmospheric environment, using it as a protective coating (coating) of steel matrix layer is generally recognized as an effective and economic method, its application history has reached more than one hundred years.Zinc in the corrosive environment medium will form a thin and dense attachment of strong corrosion products (zinc oxide, zinc hydroxide, alkaline salt: Zn (OH) 2 and ZnCl2 or ZnCO3).These products cover their surfaces to shield the ambient medium, thus preventing further corrosion.In addition, the electrode potential of zinc is negative than iron, which belongs to the anodic coating, which has the protective effect of sacrificing itself.The corrosion of galvanized layer in atmospheric environment changes greatly with climate type (generally severe in Marine climate), but its life is proportional to the attachment of galvanized layer under the same environmental conditions.The results of ASTM published in the Metal Manual show that its life can be extended by increasing the thickness of the galvanized layer.