When the chromium content is more than 12.5%, it will form a fine layer of non-disorderly passivation film, the anti-rust function will have a leap forward type of consolidation, and the corrosion resistance can be greatly enhanced, which is why the chromium content in stainless steel should be more than 12% of the factors.
含铬量在12.5%以上时，就会构成一层细密的不乱的钝化膜，防锈机能发作跃进式的实变，耐锈蚀才能大大增强，这即是为何不锈钢中的含铬量要有12%以上的因素。
There is also a way, that is, in the stainless steel telescopic door to participate in chromium together, and then add the appropriate Ni, Mo, V and other alloying elements, rust resistance is strong.
还有一种办法，即是在不锈钢伸缩门参加铬的一起，再加放适当的Ni、Mo、V等合金元素后，防锈机能较强。
Secondly, the corrosion resistance level of the stainless steel telescopic door is also related to the amount of carbon, the amount of chromium and the appearance treatment.
其次是不锈钢伸缩门的耐蚀性级还与碳量、含铬量，外表处理状况有关。
Stainless steel retractable door with the advance of carbon content, the anti-rust function is reduced, and the anti-rust function of 3Cr13 is not as good as 2Cr13.
不锈钢伸缩门跟着含碳量的前进，防锈机能降低，3Cr13的防锈机能不及2Cr13。
With the advance of the content of steel, the anti-rust function rises.
跟着钢中含量的前进，防锈机能上升。
The appearance treatment method and the condition together affect the rust prevention ability.
外表处理办法和状况一起影响防锈才能。
The anti-rust function of chrome-plated rolling gate, electrolytic polishing, mirror polishing, sand belt and craft polishing decreases successively.
卷闸门外表镀铬，电解抛光、镜面抛光、砂带、手艺抛光的防锈机能依次递减。