Electrlytic Zinc Plating
In house Hot Dip Galvanizing facility, operating completely under the surveillance of BBI QC Department.
Baseline Bolting Industries has got in-house facility for “Electrolytic Zinc Plating” which helps to make quicker deliveries under 100% in house Quality Control surveillance.
In this galvanic process, a zinc coating is deposited onto the product surface by means of electrolysis. The electrolytic process uses an aqueous solution in combination with electrolysis to produce a solid zinc deposit. The result is a smooth and bright layer. The layer thickness varies from 5 - 40 µm and this is determined by the current density and the immersion time in the zinc bath. The galvanized layer is then treated with passivation solutions such as chromate or dichromate, which increase the corrosion resistance and gives a decorative appearance. The passivation layer is a thin zinc-chromium / zinc-oxide layer on top of the zinc coating. The zinc layer has a light blue translucent hue. This process comprises oxy-hydrogen gas, which, in the case of forged steel types, can be absorbed into the material structure.