Underbody Coating

  Under body coating is known as Electrolyte  paint coating 

once the BIW (BODY IN WHITE)  steel structure  internal and external  parts welding together process completed then the second process which electolyte  paint dipping or submerged with certain inclination angle and time to allow full surface is coated with electolyte coating

 The main principle is to avoid any lag (UNCOATING) present in the STEEL frame structure BIW

The biw will complete direct contact with electro coating bath  to avoid corrosion so that it will act as corrosion resistant  for entire stage.

The more electrolyte coating performs the more increase its corrosion  resistant life.

After that it will reach heating chamber to dry out from wet condition.

then it will reache primer coating  section for again one more dipping in paint coating bath to submerged in particular period of time

the next stage is called as under body sealant region in this is stage very complicated area will be applied  primary coating  with the help of semi \automatic robot machine operation as per facility of a plant

final stage which is inspection chamber (high lighting) passes through the paint coating area to detect any  fault present indication.if not detect it will go to assembly section 

there are 5 types of coating stages which are

1.submerged electrolyte coating

2.heating chamber

3.primer deposition coating area

4.under body sealant region

5.final inspection high lighiting chamber 

pros:

high corrosion resistant

lifelong withstanding electrolyte coating

 cons:

this process is very complicated

high investment cost need

this is very harmful to human and environment