|Types of Protective Coating
|Application Method of Coating
All metals have properties that cause them to react as an anode or a cathode when coupled to another material in a corrosive environment. The application of zinc coating to iron substrates forms a protective layer and results in corrosion protection referred to as cathodic protection or sacrificial protection.
Aluminizing or Spray Galvanizing provides well mechanical interlocking based on quality abrasive blasted pre-treatment. Coating thickness of up to 500 microns can be applied though the industry standard is 100 - 150 microns. Aluminizing process is ideal in high temperature environment to prevent oxidation and corrosion. Coating with sealant provides a base for paints for longer life to structures.
Testing Process The advantages of our services can be understood by the following Every coating process is tested for adherence to IS & BS standards .We carry out the job of spray galvanizing / aluminizing to the coating thickness of 175 - 200 microns to be confirmed by the thickness measurement gauge before and after the coating process
The brief details of the test carried out on Zinc or Aluminized coating surfaces are:
Thickness of Coating: This test is carried out to ensure that the coating provided is to the accepted standards. A self-calibrated coating thickness gauge with test pieces is used for testing the thickness of Zinc/Aluminum Coating as per IS: 3203:1982.
Purity Test : Purity of Zinc / Aluminum wire used is tested in an external laboratory ascertain which should 99.95% pure be as per IS: 209.A certificate to this effect can be provided to the customer along with our test certificate if desired.