Underbody Coating

UNDER BODY COATING

• Underbody coating is usually a dense cladding (often based on rubber )applied uniformly to the undercarriage of the automobile.
• It is normally sprayed or painted on when the car is just out of the dealership and is clean.
• This is because it can prevent further damage to the undercarriage.
• In India the under body of your car is always exposed to muddy water,stones,rugged road &potholes.
• This makes it prone to wear and tear,which is offen not in plan sight but could lead to serious issues if not taken care of.
• Applying to undercoat,as soon as you get your new car,is the best way to keep the chassis intact.
• This covers the undersurface saving it from road grime and other stuff.

PRE-TREATMENT

• The first step in preparing BIW for subsequent coating is the pre-treatment process.
• The degreasing solution is composed of alkaline salt and surfactants and can include caustic soda,tri-sodium phosphate, and sodium carbonate.
• The surfactants are types of detergents for emulsifying oils and lubricants on the BIW

ELECTRODEDEPOSITION (ED)

• The metal underbody and frames of automobiles are coated to prevent corrosion,whereas other areas like the roof are not rust Poofed.
• The ED processes are modified as per the BIW (material) property.
• This ED coating provides rust and corrosion protection.

RUST-PROOF MATERIAL

• The third step is underbidy coating (UBC) and seam sealing using PVC and urethane.
• The sealant is applied around and inside the door,hood,trunk,and front dash and onto the exterior and interior of metal joints and outer area of the back wheelwell.

PRIMER

• The fourth coating step is the application of a primer surface or simple primer.
• Also be environmentally compatible with emission regulations.
• These primers are used to improve adhesion between the E-coat and top coat ,provide chipping protection.

TOP-COAT

• The finel step in the body coating process is to apply the topcoat,which consists of two layers-the basecoat and clear coat.
• Its UV light degradation promotes unmatched colour retention and provide a smooth unblemished even finish.

NOTES FOR THE UNDER BODY COATING BELOW UP.....

THANK YOU SIR FOR GIVEN THIS OPPORTUNITY