Microplasma offers electroplating as a solution for corrosion of the surfaces.
The electroplating process ensures durability and environment protection.
The technology is environmentally friendly, the electroplating process being performed in weak acid electrochemical baths with imported materials.
Flaw sheet of the weak acid zinc plating :
• Pretreatment of the pieces
• Loading the parts in barrels or frames
• Surface chemical cleaning
• Cascade double wash
• Chloride acid pickling
• Cascade double wash
• Cascade double wash
• Weak acid zinc plating
• Cascade double wash
• Blue passivation
• Cascade double wash
• Drying parts in the drying tank
• Unloading parts
The pickling bath eliminates rust, organic debris and mineral dust in a rational and economic manner. The electrochemical cleansing bath contains a silica-free alkali cleansing solution, used for ferrous and non-ferrous material. Zinc coating is blue passivated in order to increase corrosion resistance.
Zinc electroplating advantages Zinc coating is broadly used to protect metals against corrosion. In iron - zinc-coating case, the base metal has an electrochemical charge more positive than zinc has. Therefore, in humid conditions, galvanic couple to be formed in the pores of the coating will act towards gradual dilution of protective metal (zinc), building a good protection for metals against corrosion.
Electrochemical plating vs. thermal plating
The electroplated zinc has a high degree of purity; therefore his chemical resistance is higher.
The electroplated zinc consists of thick plate distribution micro-deposits. A more accurate control of the zinc layer thickness.
Normal temperatures are needed (zinc plating doesn't lead to Iron-Zinc alloys). The resulting coatings are characterized by: excellent brightness, ductility, adhesion and consistent distribution.
Zinc is a silvery blue-grey metal with amphoteric properties, solvable both in acids and concentrated solutions of alkaline hydroxides, from which zincates result.
• Density: 7.13 g/cm³
• Melting point: 419°C
• Boiling point: 907°C
• Vickers density: app. 40-100HV