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.

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