Colorized Galvanizing Coated Steel Products and its Process

The colorized hot dip galvanizing coating with different shades has been obtained with ease and stable commercial operations in single dip process. Presently, there is no single coating industries in India which is producing commercial colorized hot dip galvanizing coating in single step using both type of batch as well as continuous hot dip technique for various steel components.

Steel sheet coupons are coated with the colorized hot dip galvanizing coatings in different color shades by batch type hot dip method.  The present invention relates to steel industrial sectors related to batch hot dip galvanizing coating lines for large components like towers, pillars, pipes, rods, roof sheets, bridge angles, gates etc. as well as small components like screws, nut-bolts, fasteners, spanners, solar panel liners, steel handles, cap-covers, sheep components etc.as well as continuous hot dip galvanizing coating line of cold rolled steel sheets.

Salient Technical Features: 

• Zinc base alloy coating with the colorized surface appearance of different types of shades having better chromaticity.
• The colorized galvanizing coating have
• Enhanced stability of the obtained less Iridescence colour in normal air cooling
• Minimum variation of bath composition particularly least content of Mn and Ti.
• Minimum requirement of dipping time as well as no need of the precisely controlled coating cooling rate,
• Resistance to crack and scratch
• Inherent sacrificial cathodic protection capacity,
• Better resistance to colour fading for outdoor and indoor applications etc.

The colorized hot dip galvanizing coating with different shades has been obtained with ease and stable commercial operations in single dip process.