• powder

Powder Coating

At Aravali Fence LLC, we have a world class powder coating facility in our newly established completely conveyorized powder coating plant with sophisticated automatic processes. The plant is located 160 Kms from Mumbai, India.

We are the pioneers in using Oxsilan – the eco-friendly solution for metal treatment. We have a comprehensive pre-treatment facility (details of which are given below). The metal surface is free from all undesirable impurities like oil, grease, scales etc. before Oxsilan reaction takes place. Oxsilan results in better adhesion of powder and better corrosion resistance.

 
  What is Powder Coating?  
 

Powder coating is a type of coating that is applied as dry powder, i.e. a dry finishing process. Finely ground particles of pigment and resin are electro-statically charged and sprayed on to the surface to be coated.

 
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We have maintained a healthy paranoia in our pre-treatment process, for its absolutely critical for the surface to be well cleaned for a good powder coating finish. The pre-treatment line includes a hot spray line along with a pre-heating oven (an approximate temperature maintained here for a typical application is 200 degree C EMT (effective metal temperature) for ten minutes). The hot spray pre-treatment line is a sequence of ten spray zones - one hot water rinse, two hot degreasers, two cold rinse, one de-ionized rinse for better cleaning, then Oxsilan & three more DI rinses, Before entering the pre-heating oven for drying prior to powder coating.


Our powder coating line has a set up for double coating, each having its own curing facility. For highest quality of coating the surface is passed through first powder coat, then partial curing oven (@ 200 degree C for fifteen minutes for a typical application), and then through a second powder coat and finally through the final curing oven (@ 200 degree C for twenty four minutes). This allows us to get higher DFT (over 100 microns), which gives an excellent quality, durability and longevity.

Powder coating booth has been designed in association with powder spray systems from leaders in this industry. This spray system is coupled with electro-mechanical reciprocator. For the highest quality of finishing we have installed special powder management system with 'Spray Police Part Sensing System", advantages of which are:

 


  • Automatic triggering of guns which results in spraying only during presence of parts, no spray in the line gaps
  • Better film thickness accuracy
  • Less wastage
 

The automatic intelligent guns bring with them the most cutting edge technology. These guns ensure highest quality finish, better productivity and uniform dry film thickness.

We have also established a reverse osmosis plant with automatic control system in connect with the pre-treatment and effluent treatment plant for complying with effluent quality as per the norms.

For controlling chemical concentrations in bath solution, conductivity, pH, in process parameters as well as final inspection parameters such as DFT, hardness, adhesion, salt spray etc., we have a sophisticated well equipped lab, enabling us to meet if not surpass international quality standards.

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A-1 Fence Products Company Pvt Ltd