Surface treatment method of galvanized guardrail

Galvanizing: Galvanizing refers to the appearance processing skills of plating a layer of zinc on the surface of metal alloys or other materials to play a role of beauty and rust prevention. The first choice is hot-dip galvanizing. Zinc is easily soluble in acid and alkali, so it is called amphoteric metal. Zinc hardly changes in the dull air. In the humid air, the appearance of zinc will form a fine basic zinc carbonate film.

  In the atmosphere containing sulfur dioxide, hydrogen sulfide and ocean, the corrosion resistance of zinc is poor. Especially in the high-temperature and high-humidity atmosphere containing organic acid, zinc coating is easily corroded. After the zinc coating is passivated, dyed or coated with a light protectant, its protective and decorative properties can be significantly improved.

  Dip plastic dip plastic is also known as plastic coating, hot dip plastic, hot compress plastic coating. Dip molding (plastic coating) is a plastic coating process. It can be divided into liquid immersion (coated) plastic and powder immersion (coated) plastic according to the different raw materials used in dipping. Plastic dipping products have been widely used in domestic and foreign production and various aspects, such as: our daily clothes hangers, pliers, rubber sleeves on scissors, water valve wrenches, etc.