Black, which is the most common custom color in metal fabrication. So, how many ways can we make the surface of the product appear black? Let me introduce it to you today.
Black powder coating
Spray powder coating on the surface of the workpiece. Under the action of static electricity, the powder will evenly adsorb on the surface of the workpiece to form a powdery coating; The powder coating becomes the final coating after high-temperature baking and leveling.
Black oxide
The workpiece is usually immersed in a strong oxidizing chemical solution. For example, in the aqueous solution of sodium hydroxide (600g/cm3) and sodium nitrite (100g/cm3) with boiling temperature of 147~152 ℃, a beautiful, dense and antirust black iron oxide film is formed on the surface after a certain time.
Black anodize
Generally used for aluminum parts, It is an electrolytic oxidation process. In this process, the surface of aluminum and aluminum alloy is usually converted into an oxide film, which has protective, decorative and some other functional characteristics.
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