There are many stainless steel products used in our life, and kitchen supplies are often touched by everyone. Some elevator door jambs and sliding doors will also be processed with Jinan stainless steel plate. In order to put these materials into normal use, we can take measures to prevent the corrosion of stainless steel in advance.
Stainless steel products are very hard materials in people's eyes, so it is considered that stainless steel should not have corrosion, but stainless steel profiles will also have some problems in natural state,
Correct method to prevent pitting corrosion of stainless steel
Achieve the weight loss caused by pitting corrosion Large; For thinner solutions, the pitting rate increases with the increase of temperature. For example, in a solution with a concentration of 4% ~ 10% sodium chloride High temperature occurs at higher temperatures. Methods to prevent pitting corrosion of stainless steel: prevent the concentration of halogen ions* The uniformity of oxygen or oxidizing solution, stir the solution to prevent the solution from being at rest. Increase the concentration of oxygen or remove oxygen. Increase pH. Compared with neutral or acidic chlorides, the obvious alkaline chloride solution causes less pitting corrosion, or there is no (hydrogen and oxygen ions play a corrosion inhibition role) to prevent the corrosion caused by chloride ion adsorption. Cathodic corrosion protection is adopted. Work at the lowest possible temperature. Add passivator in corrosive medium. In many media, low concentration of nitrate or chromate can well prevent ions from preferentially adsorbing on the metal surface.
By sharing the above contents with stainless steel processing manufacturers, we can understand the causes and solutions of corrosion of stainless steel products. We must also pay attention to prevention during use, so as to better use in the later stage.