卷帘门腐蚀的幕后黑手！

Daily use of rolling shutter door, sometimes because of some reasons appear corrosion phenomenon, so rolling shutter door corrosion reason is what? Now we and rolling door manufacturers together to understand what is behind the rolling door corrosion.

1、卷帘门在制作过程中难免会损伤到表面，或出现缺陷及其他对外表面有操作的物质。

1. Rolling shutter door in the production process will inevitably damage to the surface, or defects and other external surface operation of the material.
                            

2、腐蚀不会使大面积的表面受侵蚀， 而是在损伤处及其周围的局部腐蚀，是以点蚀或缝隙腐蚀的形式，这种腐蚀会向深度和广度发展。

2. Corrosion will not erode a large area of the surface, but local corrosion in and around the damage, in the form of pitting or crevice corrosion, which will develop to depth and breadth.

3、很多时候因为忽略了这些有害因素，不重视或做得不好。但是，这些物质的存在对氧化保护膜潜在的危害，保护膜一旦被损坏，被减薄或用其它方法使之改变，不锈钢会受到腐蚀。

3. Most of the time because of ignoring these harmful factors, do not pay attention to or do not do well. However, the existence of these substances is potentially harmful to the oxidation protective film. Once the protective film is damaged, thinned or changed by other methods, the stainless steel will be corroded.