Why do stainless steel screws rust

Stainless steel screws are very common in daily life, and screws are used in many places. Today, the stainless steel screw factory analyzes what are the reasons for the rust of stainless steel screws? Perhaps most people think that stainless steel screws will not rust. But in life, we often see that some stainless steel screws that have been used are rusted, which makes most people very distressed. Rust not only affects the appearance of the screw and the product, but also destroys the original use performance and firmness of the screw. . Therefore, in the process of using stainless steel screws, we must pay attention to the key points of use, which can restrain the rust time of stainless steel screws to a large extent and increase their lifespan.
The stainless steel screw factory sorted out the reasons for the rust of stainless steel screws:
One of the reasons for the rust of stainless steel screws: dust or foreign metal particles attachments, in humid air, the attachments and the condensation water of the stainless steel screws connect the two to form a micro battery, which initiates an electrochemical reaction and protects the film. Damaged, called electrochemical corrosion.
The second reason for the rust of stainless steel screws: the surface of stainless steel screws adheres to organic juice (such as melon, vegetable, noodle soup, sputum, etc.), which forms organic acid in the presence of water and oxygen, and the organic acid will corrode the metal surface for a long time.
The third reason for the rust of stainless steel screws: the surface of stainless steel adheres to containing acid, alkali, and salt substances (such as alkaline water and lime water splashing on the decoration wall), causing local corrosion.
The fourth reason for the rust of stainless steel screws: (such as the atmosphere containing a lot of sulfides, carbon oxides, and nitrogen oxides), in contact with condensed water, sulfuric acid, nitric acid, and acetic acid liquid spots are formed, causing chemical corrosion.
The above-mentioned conditions can cause damage to the protective film on the surface of the stainless steel screw and cause rust. To ensure that the surface of stainless steel screws is beautiful and not corroded. We have to clean the surface. Passivation and other treatments.
When using stainless steel screws in daily life, you must pay attention to the situation that the above-mentioned stainless steel screw factory organizes to prevent stainless steel screws from rusting lightly.