Ceever: surface treatment of metals

In the actions of surface treatment, the washing agents are chemical products which are used in the operations of removal of contaminants from a part.
In the treatment of metal surfaces, the washing agents can be divided into two groups:

  • Detergents: typically produced in aqueous solution that exert a physical-chemical contaminant on, causing separation from the surface and preventing the redeposition
  • Solvents, products that interact with the contaminant, allowing the solubilization

The agents used in the treatment of metal surfaces are divided into:

  • Organic solvents pure (without water)
  • Detergents in aqueous solutions (water only)
  • Mixed systems (mixtures of solvents and detergents)

A washing agent used during the treatment of metal surfaces must possess precise characteristics. A product which may be used, cold or hot, in liquid or vapor phase, in the processes of surface treatment of metals should preferably possess:

  • Good capacity for removal of contaminants
  • Good penetrating ability, to perform an adequate treatment of metal surfaces, even of any cavity and / or intersticesof the manufactured article
  • Good chemical stability, to avoid reactions during treatment of metal surfaces, to prevent possible corrosion of the materials with which they are constructed wash installations.
  • Characteristics such as to allow recovery and recycling in the plant for the surface treatment of metal
  • Low environmental impact, both for the dispersion in the environment of the product for which the toxicity on humans and the biosphere in general
  • chemical-physical characteristics which permit the use and the surface treatment of metals under conditions of plant safety.
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