Passivation is a surface treatment applied to metals, particularly stainless steel, to improve their resistance to corrosion and industrial wear. This process is used after cleaning or pickling to remove impurities and ferrous contaminants from the surface, promoting the formation of a stable protective oxide layer that prevents oxidation and prolongs the useful life of the product.
Passivation is widely used in the chemical, food, pharmaceutical and energy sectors and in industrial production plants where it is essential to keep metal surfaces free of contaminants and resistant to aggressive agents. It is used, for example, on equipment, tanks, pipes and machinery that must withstand corrosive environments or high temperatures.
Passivation systems can be manual or fully automatic and typically use immersion tanks, spraying systems or high-speed washing. The most common technologies involve the recirculation of chemical solutions (often acids such as nitric or citric acid), circulated by pumps and dedicated equipment that ensure uniform treatment and operator safety.
Ceever designs and manufactures automated immersion or spray passivation systems that are programmable and can be integrated with production management systems (MES).
