The casting is placed in a phosphating solution to form a water-insoluble crystalline phosphate film on the surface. It can prevent the casting from rust and certain corrosion.
Application: carbon steel, low and medium alloy steel, tool steel.
Castings are placed in the blackening solution to form an oxide film on the metal surface. It can prevent the casting from rust and certain corrosion.
Application: carbon steel, low and medium alloy steel, tool steel.
Dacromet or Geomet solution is sprayed on pretreated product surface, and then adheres to the surface by drying to form a protective coating with a thickness of around 4 to 8μm. It provides a better anti-corrosion, thermos-stability, permeability and recoat ability, compared with traditional electroplating processes. Geomet solution doesn't contain Chromium element and is called environment-friendly Dacromet. Surface appears sliver white or grey after coating.
Application: all materials.
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