Zhejiang Chengpeng Industry and Trade Co., Ltd.About UsNo. 3, Weiwu West Road, Tongqin Industrial Park, Wuyi County,321200 ,Jinhua City, Zhejiang Province, ChinaChengpeng Company was established in 1999 and located in Wuyi, Zhejiang,near to Shanghai and Ningbo .We are a professional manufacturer fully integrated with design, producing and sales of stainless steel drinkware including vacuum flasks, vacuum travel mug ,hydration bottle...and so on. Among more than 300 skilled employees, our experienced R&D teams reach to 30 staffs. And we are proud to be the only drinkware factory liscensed officially to operate electrolysis by ourselves in Zhejiang province.Moreover, all our products are approved by SGS, TUV and other international author
What causes stainless steel rusted Do you know why the stainless steel can be anti-rust? There is a thin, firm and fine stable chromium rich oxide film (protective film) formed on stainless steel surface, that’s why the stainless steel can be anti-rust.The corrosion resistance is obtained by preventing oxygen atoms from penetrating and oxidizing. Once the film is continuously damaged for some reason, the oxygen atoms in the air or liquid will continuously separate out to form loose iron oxide, and the metal surface will be continuously corroded. But the anti-rust performance depends on the use environment,some times stainless steel materials may rust for the following causes:
Chloride ion exists in the service environment
Chloride ions exist widely, such as salt / sweat / sea water / sea breeze / soil, etc. Stainless steel corrodes rapidly in the presence of chloride ions, even more than ordinary low carbon steel. Therefore, there are requirements for the service environment of stainless steel, and it needs to be wiped frequently to remove dust and keep clean and dry. (this can give him a "improper use".) there is an example in the United States: an enterprise uses an oak container to contain a solution containing chloride ions. The container has been used for more than 100 years. It is planned to replace it in the 1990s. Because the oak material is not modern enough, the container leaks due to corrosion 16 days after replacing it with stainless steel.
Without solution treatment
The alloy elements do not dissolve into the matrix, resulting in low alloy content and poor corrosion resistance.
Inherent intergranular fracture
This material without titanium and niobium has the tendency of intergranular corrosion. Intergranular corrosion can be reduced by adding titanium and niobium and stabilizing treatment. It is a kind of high alloy steel that can resist corrosion in air or chemical corrosion medium. Stainless steel has beautiful surface and good corrosion resistance. It gives full play to the inherent surface properties of stainless steel without surface treatment such as color plating. It is commonly called stainless steel. Representative properties include 13 chromium steel, 18-8 chromium nickel steel and other high alloy steels.
