Blackening Equipment For Metal - Blackening equipment for metal is used to apply a black oxide coating to metal surfaces, a process often used for improving corrosion resistance, reducing glare, or enhancing aesthetics. Here’s an overview of blackening equipment and processes: * Types of Blackening Processes 1. Hot Black Oxide Process - Requires immersion in heated tanks with alkaline solutions, such as sodium hydroxide and nitrates. Suitable for ferrous metals like steel and cast iron. Produces a durable, deep black finish. 2. Cold Blackening - Uses room-temperature chemical solutions. Simpler and safer to operate than hot processes but produces a less durable finish. Often used for small-scale or decorative applications. 3. Mid-Temperature Black Oxide - Operates at moderate temperatures (up to 220°F). Balances safety and performance compared to hot processes. 4. Electrolytic Blackening - Uses an electrochemical process for controlled blackening. Ideal for precision parts with strict tolerances. # Blackening Chemical Manufacturer.