济南不锈钢卷帘门：不锈钢卷闸门不容易生锈的原理

来源：http://www.jnyuqilin.com/  发布时间：2024-07-25 14:36:16

　　不锈钢卷闸门顾名思义就是不容易生锈的钢材所制，这里的"不锈"是相对的，不是的是相对于碳钢而言。不锈钢不容易生锈，但不是不生锈，只是在相同条件和环境中，较碳钢而言不容易被腐蚀和生锈。

　　Stainless steel roller shutter, as the name suggests, is made of steel that is not easily rusted. Here, "stainless" is relative, not absolute, relative to carbon steel. Stainless steel is not easy to rust, but it is not absolutely rust free. It is just that under the same conditions and environment, it is less likely to corrode and rust compared to carbon steel.

　　生锈"其实质是腐蚀或称之为锈蚀，是由于钢铁表面与大气中的氧、水分及其酸、碱、盐等物质发生化学作用或电化学作用而引起的变色或腐蚀称为锈蚀。表面产生的物质是"锈"是铁的氧化物，也叫做物质氧化的过程。

　　Rust "is essentially corrosion, also known as rusting, caused by chemical or electrochemical reactions between the surface of steel and oxygen, moisture, acids, bases, salts, and other substances in the atmosphere, resulting in discoloration or corrosion. The substance produced on the surface is" rust ", which is an oxide of iron, also known as the process of material oxidation.

　　不锈钢卷闸门为什么不易生锈，这就和铬有着直接的关系了，在基体内加入12.5%以上的铬。在氧化性腐败无能蚀介质中，铬能使钢表面很快地生成一层致密的钝化膜，防止金属基体被破坏。当含铬量在12.5%以上时，就会形成一层致密的稳定的钝化膜，防锈性能发生跃进式的实变，耐锈蚀能力大大增强，这就是为什么不锈钢中的含铬量要有12%以上的原因。

　　The reason why stainless steel roller shutter is not easy to rust is directly related to chromium, which is added to the substrate with more than 12.5% chromium. In oxidizing and non corrosive media, chromium can quickly form a dense passivation film on the surface of steel, preventing the metal substrate from being damaged. When the chromium content is above 12.5%, a dense and stable passivation film will be formed, and the rust prevention performance will undergo a leap forward transformation, greatly enhancing the corrosion resistance. This is why the chromium content in stainless steel should be above 12%.

　　还有一种方法，就是在不锈钢卷闸门加入铬的同时，再加放适量的Ni、Mo、V等合金元素后，防锈性能更强。

　　Another method is to add chromium to the stainless steel rolling shutter, and then add an appropriate amount of alloy elements such as Ni, Mo, V, etc. to enhance its rust prevention performance.

　　其次是不锈钢卷闸门的耐蚀性级还与碳量、含铬量，表面处理状态有关。不锈钢卷闸门随着含碳量的提高，防锈性能下降，3Cr13的防锈性能不及2Cr13。随着钢中含量的提高，防锈性能上升。表面处理方法和状态同时影响防锈能力。卷闸门表面镀铬，电解抛光、镜面抛光、砂带、手工抛光的防锈性能依次递减。

　　Secondly, the corrosion resistance level of stainless steel rolling gates is also related to the carbon content, chromium content, and surface treatment status. With the increase of carbon content, the rust prevention performance of stainless steel rolling gates decreases, and the rust prevention performance of 3Cr13 is inferior to that of 2Cr13. With the increase of steel content, the anti rust performance improves. The surface treatment method and state simultaneously affect the rust prevention ability. The rust prevention performance of the roller shutter surface is gradually reduced by chrome plating, electrolytic polishing, mirror polishing, sand belt polishing, and manual polishing.

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