How manufacturers deal with stainless steel chains turning black when not used for a long time

In human production and daily life, stainless steel chains produced by manufacturers are used in many places. When left unused for a long time, they tend to oxidize and turn black, affecting their appearance and even directly impacting safety. The reasons for stainless steel chains turning black and the solutions are frequently encountered in manufacturing. Here, we will briefly introduce a few effective methods.

The oxidation of stainless steel is influenced by various factors, such as temperature, oxygen concentration, humidity, atmosphere, and the condition of the metal surface. Among these, temperature is the primary factor affecting high-temperature oxidation of stainless steel. As the temperature increases, the formation rate of the oxide layer accelerates. The reason for the blackening of the stainless steel surface is that the protective coating is damaged, allowing the steel surface to come into contact with oxygen and undergo a chemical reaction. The occurrence of yellow rust usually indicates partial damage to the surface film, which has been penetrated by corrosive gases, liquids, or electrolytes.

Solutions for chain blackening provided by manufacturers:

Use cleaning agents and cleaning cloths to clean the surface. Keeping the stainless steel surface clean and dry can slow down the oxidation process.

Spray corrosive gases or misting agents as surface rust removers, which can effectively remove surface oxides and achieve rust removal.

Use manual polishing machines to polish the surface. Polished surfaces become smoother and free of burrs, reducing damage to the surface film and extending the lifespan of the stainless steel.

In summary, the blackening caused by oxidation of stainless steel chains can be resolved by choosing the correct treatment methods. In daily use, greater attention should be paid to the maintenance and care of stainless steel.