广东佛山厂家有花无花镀锌板卷汽车车身镀锌板耐腐蚀白铁皮 ...

汽车车身耐腐蚀状况受所处环境、使用材料、结构设计、生产制造工艺和维修保养等因素影响。其中，生产制造工艺中的车身电泳涂装防腐在国内主机厂已被广泛关注，且展开了同步工艺分析，但是镀锌板材料的使用率由于受成本约束却仍相对滞后。对于汽车车身防腐工艺十分有必要建立一套行之有效的车身镀锌板设计数据库，从而制定乘用车车身镀锌板使用规范，来有效提高产品的防腐性能，优化防腐设计成本。

The corrosion resistance of automobile body is affected by the environment, use materials, structural design, manufacturing process and maintenance factors. Among them, the anticorrosion of the car body electrophoresis coating in the manufacturing process has been widely concerned in the domestic oEMS, and the synchronous process analysis has been carried out, but the utilization rate of galvanized sheet materials is still relatively lagging behind due to the cost constraints. For the automobile body anti-corrosion process, it is necessary to establish a set of effective body galvanized plate design database, so as to formulate the use specifications of passenger car body galvanized plate, to effectively improve the anti-corrosion performance of products and optimize the anti-corrosion design cost.

镀锌层的厚度是决定钢基板耐腐蚀性的最重要因素之一，根据瑞典防腐研究表明，镀锌层在7～10mm厚时防腐蚀性能最为合理，也有国内进行的相关研究认为，镀层厚度大于60g/m2时具有较好的耐膜下腐蚀性能。同时，镀锌钢板在实际使用中的耐蚀性，不但取决于镀锌钢板本身，还决定于镀锌钢板的加工工艺状态和使用环境，这三个因素也可成为镀锌钢板腐蚀三角形。

The thickness of the galvanizing layer is one of the most important factors to determine the corrosion resistance of the steel substrate. According to the Swedish anticorrosion study, the corrosion resistance of the galvanizing layer is the most reasonable at 7~10mm thick. There are also domestic studies that the coating thickness is greater than 60g / m2. At the same time, the corrosion resistance of galvanized steel plate in actual use not only depends on the galvanized steel plate itself, but also depends on the processing process state and use environment of galvanized steel plate. These three factors can also become the corrosion triangle of galvanized steel plate.

汽车整车腐蚀一般按照三类进行分析：一是外观腐蚀，主要是外观面表面发生锈蚀，对外观件定义一般是3年无锈蚀；二是内侧腐蚀，产品件孔隙或腔体表面发生腐蚀，严重时锈穿孔，一般定义为10年无穿孔；三是结构腐蚀，重要功能件结构腐蚀会导致功能失效，从而出现安全性问题。上述三类腐蚀根据严重程度需要采用镀锌板。

Vehicle corrosion is generally analyzed according to three types: first, appearance corrosion, mainly corrosion on the appearance surface, the second part is internal corrosion, product pores or cavity surface corrosion, severe rust perforation, generally defined as no perforation in 10 years; third, structural corrosion, structural corrosion of important functional parts will lead to functional failure, resulting in safety problems. The above three types of corrosion shall adopt galvanized plate according to their severity.

随着镀锌技术的发展和汽车防腐蚀性能要求的进一步提升，镀锌钢板在车身上的应用越来广泛，欧美汽车白车身镀锌钢板的应用比例高达90%。

With the development of galvanizing technology and the further improvement of the anti-corrosion performance requirements of automobiles, the application of galvanized steel plate in the car body is more and more extensive, and the application proportion of galvanized steel plate in white in Europe and America is as high as 90%.