How can I prevent discoloration of black dye?
[Troubleshooting] Black dye that easily turns red. Here are methods to improve corrosion resistance.
Black dyeing treatment is also referred to as "ferric oxide treatment." When iron products are reacted in a high-temperature alkaline solution, black iron oxide known as ferric oxide is produced. The black dyeing film has the property of gradually discoloring (oxidizing) to red over time as it reacts with water and oxygen in the air. The time it takes for discoloration to occur varies depending on the type of iron material, processing history, thickness of the black dyeing film, and storage conditions. To prevent discoloration of the black dyeing, it is important to constantly protect the surface with oil or similar substances and to avoid reactions with moisture in the air. Care should be taken during long-term storage as the oil may dry out. Our company adjusts the black dyeing treatment process according to the type of iron material. Additionally, while products are usually completed with an oil coating, if desired, a clear coat can be applied to further enhance corrosion resistance. Please feel free to consult us with any concerns regarding black dyeing.
- Company:笹川メッキ 新潟県三条市
- Price:Other