COLD BLACKENING CHEMICAL - VCBLK HB-18 Cold blackening is a process used to impart a durable black finish to metal surfaces, primarily steel and iron, through a chemical reaction. The VCBLK HB-18 is a specific cold blackening chemical formulation designed for this purpose. Here’s an overview of what VCBLK HB-18 is, its uses, and some considerations: * Process 1. Preparation: The metal surface must be cleaned and degreased thoroughly to ensure proper adhesion of the blackening layer. 2. Application: The VCBLK HB-18 solution is applied to the metal surface, typically through immersion, brushing, or spraying. 3. Reaction Time: The metal is left in the solution for a specified time to achieve the desired thickness of the black oxide layer. 4. Rinsing and Sealing: After blackening, the metal is rinsed to remove any excess chemical and often sealed with oil or another protective coating to enhance durability and corrosion resistance.