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Many people have a misunderstanding about stainless steel and believe that stainless steel will never rust. In actual fact, stainless steel is made of iron-chromium alloy and then incorporated with other trace elements, and its corrosion resistance is good. The reason is that the surface is formed with a passivation film. In nature, it exists in the form of a more stable oxide. That is, although the degree of oxidation of stainless steel is different depending on the conditions of use, it is eventually oxidized. This phenomenon is usually called eclipse. Many stainless steel mirrors in old passenger elevators will be oxidized due to prolonged use, making it difficult to see. Electrochemical reaction or chemical reaction occurs on the metal surface exposed to the corrosive environment and is uniformly corroded. The weak corrosion resistance of the stainless steel elevator surface passivation film forms a pitting reaction due to a self-excited reaction, resulting in the formation of small holes, together with the close proximity of chloride ions, forming a strong corrosive solution and accelerating the speed of the corrosion reaction. There is also intergranular corrosion cracking inside the stainless steel, all of which damages the passivation film on the stainless steel surface. Therefore, in order to maintain the gorgeous surface of the stainless steel products and to extend their service life, regular maintenance is required. In reality, once it is found that the stainless steel surface of the elevator has rusted, it must take measures to deal with it. Otherwise, serious accidents may occur, and even casualties may occur. Therefore, we must learn more about the maintenance of stainless steel surfaces on elevators. As for how to maintain it, we will not introduce it here. If you want to understand it, you can directly contact us. Contact: Tony Yu Email:sales@aoyama-elevator.jp Previous: What Are The Conditions For The New Drive Motor For High-speed Elevators? Next: It Is Very Important To Do Maintenance Work On Stainless Steel Elevators
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Mnogi ljudi imaju nesporazu od nehrđajućeg čelika, da nehrđajući čelik nikad nije zahrđao. Zapravo, nehrđajući čelik je izrađen od Fe-CR legure i ostalih elemenata u tragovima, a otpornost na koroziju je dobra. Razlog je da je površina formiranja sloj pasivizacijskog filma, u prirodi ga u stabilniji oblik oksida, drugim riječima, od nehrđajućeg čelika Iako je uporaba različitih uvjeta, stupanj oksidacije nije isti, ali u konačnici je oksidiran , Ovaj fenomen se često naziva pomračenje. Mnogi stari putnički lift unutar ogledala od nehrđajućeg čelika, bit će zbog dugoročne uporabe ovog mjeseca da uzrokuju oksidativnu koroziju, postaju vrlo teško vidjeti. Površina metala izložena koroziji u okolišu svih elektrokemijskih reakcija ili kemijskih reakcija, jednolika korozija. Dizala od nehrđajućeg čelika Površinska pasivizacijska folija između slabe otpornosti na koroziju mjesta, zbog samouzravljive reakcije u obliku reakcije pittinga, formiranje malih rupa, povezanih s kloridnim ionima blizu formiranja jake korozivne otopine, ubrzava brzinu reakcije korozije. Postoje intergranularni pukotine korozije u nehrđajućem čeliku, koji imaju štetan učinak na pasivizacijski film na površini nehrđajućeg čelika. Stoga se mora redovito održavati prekrasna površina proizvoda od nehrđajućeg čelika i produljiti vijek trajanja. U stvarnoj situaciji, kada se površina nehrđajućeg čelika dizala pronađe zahrđala, mora se brinuti. Inače, može doći do nekih ozbiljnih nesreća, pa čak i žrtava. Stoga moramo znati više o načinu održavanja površine dizala od nehrđajućeg čelika.