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Why does the stainless steel belt surface rust?

Mar 29, 2019

Precision stainless steel strips are widely used in our daily life and industrial fields. Due to environmental changes, improper human operation and other factors, over time, most of the steel strip products will have rust changes on the surface. So how did these rusts come about? Below we take the 301 stainless steel belt as an example to explain.
There are two reasons for rusting 301 stainless steel strips: one is chemical corrosion and the other is electrolytic corrosion.
What is chemical corrosion? Generally speaking, during the use of 301 stainless steel strip products, a layer of oil, dust, acid, alkali, salt, etc. will be attached to the surface. Under certain conditions, these stains will chemically react with the stainless steel strip to destroy the surface. The passivation film reduces the protective ability and produces chemical corrosion.
The other is electrolytic corrosion. The general stainless steel strip contains several different metal components. These metal components cause electrical corrosion in the galvanic cells due to the influence of corrosive media of themselves or the outside.
 As a spring-specific stainless steel belt, the 301 stainless steel belt has a wide range of applications. To reduce the rusting speed of the product during use, it is necessary to choose a suitable high-quality stainless steel belt.