如果地形上只有几个钉子洞，彩钢板的腐蚀速度不快。下图显示的是在未对钉孔进行所有处理的情况下，彩钢瓦腐蚀造成的损坏。虽然不是很明显，但在猪舍这种腐蚀性的地理环境中，我们不需要冒险。
2、 锈蚀损伤
彩钢板简言之，锈蚀损伤主要是由生锈的铸铁件引起的，如生锈的钢钉和铁丝掉在彩涂厚钢板表面，以及彩涂厚钢板表面经过一段时间的涂层而造成的损伤。锈病是同时解释铁铸件为传染病。这是因为铁锈呈蜂窝状，容易消化水分，消化后的铁锈会加速铸铁件的腐蚀。下图显示，铸铁的腐蚀附着在彩涂厚钢板上，导致彩涂卷材厚钢板腐蚀。
彩钢板中的悬挑结构（①、②、④）和彩涂厚钢板（③）均为热镀锌件。指出造成这些困难的原因，有助于以后掌握这些困难。首先，①、②为电弧焊焊点，均为电弧焊引起的腐蚀。① 两个热浸镀锌C型钢檩条固定在同一个焊接工程上方便；②独特封闭型外焊一块镀锌钢板比较方便，这是
彩钢板由于这两种工作造成预制构件热浸镀锌层损坏所致，其中一个因损伤面小而腐蚀缓慢（①），因损伤面大而腐蚀快（②）。
顺便说一下，那时电弧焊完成后，应涂一层冷水漆和一层银漆，以避免焊接位置与蒸汽体接触，从而减少腐蚀。--当位置（2）的腐蚀开始向外扩散时，它会“感觉”到与之接触的涂有彩色涂层的厚钢板。彩涂厚钢板热浸镀锌层损坏时，会发生腐蚀（3）。当彩涂厚钢板（3）的锈水再次滴落时，会在热镀锌C型钢檩条上“摸”一下，再次引起腐蚀
If there are only a few nail holes in the landform, the corrosion rate of color steel tile is not fast. The following photo shows the damage to the color steel tile corrosion without doing all the treatment for the nail hole. Although it is not very obvious,
we don't need to take chances in the corrosive geographical environment of pig house.
2、 Rust damage
In short, rust damage is mainly caused by rusty iron castings, such as rusty steel nails and iron wires falling on the surface of color coated thick steel plate, and the damage caused by coating on the surface of color coated thick
steel plate after a period of time. Rust is simultaneous interpreting iron castings as infectious diseases. It is because rust is honeycomb like and easy to digest water, and rust after digestion will speed up the corrosion of iron castings. The following
picture shows that the corrosion of cast iron is adhered to the color coated thick steel plate, which leads to the corrosion of color coated coil thick steel plate.
The overhanging structure (①, ②, ④) and color coated thick steel plate (③) in the
above photos are hot-dip galvanized parts. It is helpful to master the difficulties later by marking the reasons for their current situation. At first, ① and ② are arc welding welding welding points, all of which are corrosion caused by arc welding. ①
It is convenient to fix two hot-dip galvanized C-section steel purlins to the same welding work; ② it is convenient to weld a piece of galvanized steel plate outside for unique and closed type, which is caused by the two kinds of work The hot-dip galvanizing
coating of prefabricated components was damaged, and the corrosion of one was slow due to small damage surface (①) and fast corrosion due to large damage surface (②).
By the way, at that time, after the completion of arc welding, a layer of cool water paint should be painted and a layer of silver paint should be applied to avoid the contact between the welding position and the steam body, which can reduce the
corrosion. ——When the corrosion at position (2) begins to spread outside, it will "sense" the color coated thick steel plate that contacts with it. When the hot-dip galvanized layer of the color coated thick steel plate is damaged, the corrosion will
occur (3). When the rust water of color coated thick steel plate (3) drips down again, it will "feel" on the hot-dip galvanized C-section steel purlin, causing the corrosion again
