black perforated metal screen

Latest articles

black perforated metal screen

...

black perforated metal screen black perforated metal screen

Read More
  • Every part of the plating can be zinc plated, even in dents, sharp corners and hidden places can be fully maintained. The cost of hot dip galvanized rust prevention is lower than that of other paint coatings. The galvanizing process is more convenient than other coating construction methods, and can prevent the time required after the device is painted on the site. In suburban environment, the standard hot-dip galvanized rust prevention thickness can adhere to more than 50 years without repair. In urban or offshore areas, the standard hot-dip galvanized rust protection layer can last 20 years without repair.

    black perforated metal screen

    ...

    black perforated metal screen black perforated metal screen

    Read More

  • Post time: 15-12-22

    black perforated metal screen

    ...

    black perforated metal screen black perforated metal screen

    Read More
  • Post-plating (passivation, hot melting, sealing and dehydrogenation, etc.) for the purpose of enhancing protective properties, decoration and other special purposes. After galvanized, chromate passivation or other conversion treatment is generally required to form the corresponding type of conversion film, which is one of the key processes to ensure the quality of post-plating.

    black perforated metal screen

    ...

    black perforated metal screen black perforated metal screen

    Read More
  • The key and important parts with tensile strength greater than 1034Mpa should be relieved of stress at 200±10℃ for more than 1 hour before plating, and the carburized or surface hardened parts should be relieved of stress at 140±10℃ for more than 5 hours. The cleaning agent used for cleaning shall have no effect on the binding force of the coating and no corrosion on the substrate. Acid activation Acid activation solution should be able to remove corrosion products and oxide film (skin) on the surface of parts without excessive corrosion on the matrix.

    black perforated metal screen

    ...

    black perforated metal screen black perforated metal screen

    Read More
  • The iron is clean and clean, and then solvent treatment, after drying immersed in zinc liquid, iron and molten zinc reaction to produce an alloyed zinc layer, the process is: degreasing – washing – pickling – assisted plating – drying – hot dip galvanizing – separation – cooling passivation. The thickness of the alloy layer of hot plating wire mainly depends on the chemical composition of the steel silicon content, the size of the steel cross-sectional area, the roughness of the steel surface, the temperature of the zinc pot, the time of dipping zinc, cooling speed, cold rolling deformation, etc.

    black perforated metal screen

    ...

    black perforated metal screen black perforated metal screen

    Read More
  • black perforated metal screen

    ...

    black perforated metal screen black perforated metal screen

    Read More
  • C, coating uniformity: galvanized layer is basically uniform with copper sulfate solution test etched five times without exposing iron.

    black perforated metal screen

    ...

    black perforated metal screen black perforated metal screen

    Read More
  • The composition of hot dip galvanizing layer is composed of hot dip galvanizing layer, which is composed of iron zinc alloy between iron matrix and surface pure zinc layer. The shape of the workpiece is formed by the iron zinc alloy layer in hot dip, so that the iron and pure zinc layer touch outstanding. When the iron workpiece is immersed in a molten zinc solution, the initial zinc and iron (body) are formed at the interface. This is a crystal made up of zinc atoms in the solid metal iron. When two metal atoms are fused together, the gravitational force between the atoms is very small.

    black perforated metal screen

    ...

    black perforated metal screen black perforated metal screen

    Read More
  • black perforated metal screen

    ...

    black perforated metal screen black perforated metal screen

    Read More
  • 

    Popular articles

    Latest articles

    Links