Metallic heat tanning:
Aesthetic and durable protection of metal surfaces
Hot dip plating is a chemical process that forms a deep black oxide layer on the surface of metal. During the process, the metal surface reacts with iron nitride and iron carbonide, resulting in the black colour.
Heat-tanning has several advantages, including:
- Increased corrosion resistance: the oxide layer formed by hot pickling protects the metal surface from corrosion.
- Improves wear resistance: the oxide layer formed by hot-dip pickling makes the metal surface harder, making it more resistant to wear.
- Increases surface hardness: the oxide layer with hot-burnished coating increases the hardness of the metal surface, making it more resistant to damage.
- Provides a more aesthetically pleasing surface: the black surface with hot-burnishing gives metal parts a more aesthetic appearance.
Hot dip pickling is widely used for surface treatment of various metals, including:
- Steel
- Iron
- Copper
- Brass
- Bronze
Hot dip galvanising is often used in the following applications:
- Brass, bronze, bronze plating
- Metal parts
- Metal parts
- Connectors
Hot tanning is a relatively simple process, which consists of the following steps:
- The workpieces are cleaned of dirt and grease.
- The workpieces are placed in a chemical solution containing sodium nitrate, sodium carbonate and other additives.
- The workpieces are heated at 130-140 °C.
- The workpieces are kept in the chemical solution for 1-2 hours.
- The workpieces are removed from the chemical solution and rinsed with cold water.
If you are manufacturing or using metal parts, heat-tanning is an excellent way to protect surfaces aesthetically and durably. Our skilled staff will be happy to assist you in selecting and implementing a hot dip process.