Blackening equipment for metal
Blackening equipment for metal is used to apply a black oxide finish to various metal surfaces, enhancing corrosion resistance and providing an aesthetic black finish. Several types of equipment and methods are available, each suitable for different applications and scales of production.
1. Hot Blackening Systems: These involve a series of tanks for cleaning, rinsing, blackening, and sealing. The process typically includes cleaning the metal parts in a hot alkaline solution, rinsing, immersing them in a heated black oxide solution, and then sealing with oil or another corrosion inhibitor. Hot blackening provides a durable finish and is commonly used in industrial applications (EPI) (EPI).
2. Room Temperature Blackening: This process is simpler and more environmentally friendly compared to hot blackening. It can be performed at room temperature, making it suitable for smaller operations or in-house processing. Products like Insta-Blak 333 from Electrochemical Products, Inc. (EPI) and Caswell Inc.'s black oxide kits are popular for this method. They offer quick processing times and eliminate the need for heating equipment, reducing energy costs and hazards associated with hot solutions (Caswell Plating) (EPI).
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