Underbody Coating

UNDERBODY COATING

DEFINITION

Underbody coating provides long term protection from corrosion to car's underbody. It also protects parts like internal body panels, frame rails and other inner cavities that are not physically accessible but are prone to corrosion.

TYPES OF UNDERBODY COATING

1 . Rubberized underbody coating

This is generally thought of as the best underbody coating for your car. It preserves the underbody well, protecting it from scratches. Applying this to the undercarriage is not much of a hassle either.

2 . Wax Based Underbody Coating

This – more or less – ephemeral undercoating will wear away in a few months’ time. On the upside, wax-based undercoating puts up a big fight against moisture. It is also the most affordable option out there.

3 . Asphalt Based Automotive Undercoating

Best suited for lorries, trucks and large vehicles this provides a greater degree of protection compared to rubber-based coatings. However, asphalt-based coatings contain little amounts of rubber for sound-insulation purposes. The process of applying this coating is a bit time-consuming though.

4 . Polyurethane Underbody Coating

This coating closes up splits and fractures on the underbody of the vehicle. It offers up good protection against corrosion and also bonds with the metal. Unlike in the case of asphalt-based coating, you can paint over the polyurethane coating.

ADVANTAGES OF UNDERBODY COATING

• Fights rust

It plays an important role in keeping corrosion at bay. Underbody coating can come in handy especially if you live near the sea, where there is too much humidity, and rusting is just one of those everyday things. You should also seriously consider undercoating if you reside in a place where it snows in winter.

• Absorbs noise

very thick undercoating can soften the noises that reach the cabin. Since the undercoating is often made up of rubber it absorbs some of the rackets. The occupants of the car could spare themselves of the road noises – at least up to a certain extend.

• Reinforcement

If your car comes with stock underbody coating, using another coating on top of it, is not going to hurt. It will offer additional reinforcement, protecting the underbody from water, road debris, gravel and small pebbles. There would also be a lesser chance for the factory coat to flake away.

• Prolong cars life Good undercoating not only defends the underbody from corrosion but also protects the engine and transmission as well! Less rusting coupled with slower wear and tear can surely add years to the lifespan of your vehicle. There would be fewer dents, dings and scratches on the undercarriage for you to fret about.

How is underbody coating done in a car?

1. The car is hoisted on a lift and the underbody is inspected for flaws
2. The under body is cleaned removing out the dirt and grease
3. Critical components like silencer are covered in a film to avoid the coating from sticking to it
4. Rest of the under body is spray painted evenly.
5. The silencer film is removed and zinc coating is sprayed on it
6. Final inspection is done to look out for flaws
7. Done , the car is ready to leave the workshop WHAT IS ED COATING ED Coating is known by many names like Electrodeposition, Electropheretic, Electrophoresis Coating, Cationic E-Coat and Cathodic Electro Deposition just to name a few. It is an organic coating method that uses electrical current to deposit paint onto a part or assembled product. Because of its ability to coat even the most complex parts and assembled products with specific performance requirements, ED Coating is used throughout industry as a means to coat products in various categories such as: automobiles, automotive parts, transformers, metal office furniture, home appliances, fixtures and much more. ED COATING PROCESS This is a process where water based paint consisting of Pigment, Resin and Solvent is electroplated or coated on either ferrous or non-ferrous surface. This is usually found in automobile body parts as a prime coat before spray painting. With features like high throwing power; evenness in coating thickness and high corrosion resistant, it had already taken over many other processes such as epoxy powder painting, wet paint spraying and zinc electroplating.

• Excellent Coverage of Complex Configurations With Recessed Areas
• Internal Coverage For Parts With Crevices
• Uniform Film Thickness
• Controllable Consistent Film Build
• Benchmark Corrosion Protection
• Compatible with other Coating Technology
• Capability to Coat Aluminum and Zinc Die-Cast, Steel, Galvanized Steel and Other Metals

PROPERTIES OF ED COATING

Thickness	10 - 35 microns (µm)
Pencil Hardness	2H - 3H (Mitsubishi - Uni)
Salt Spray(Zinc Phosphate Treated)	1,000 hours (5% Nacl, 35o C)
Adhesion	100/ 100 (1mm Square)
Brightness	15 - 65 ( 60 )
Impact Test	50 cm PASS (1/2 in dia x 500gm)
Alkali Resistance	Above 240 hours (0.1N NaoH)
Acid Resistance	Above 48 hours (0.1N H2SO4)
Composite Corrosion Test	100 cycle (SST 2 hours,Dry 60o C 2 hours, wet 50o C, 95% RH, 4 hrs)
Filiform Rust Resistance	1.0MM - 1.5MM

THE PROS AND CONS OF VEHICLE UNDERCOATING

The Vehicle Undercoating Pros

1.The production against corrosion and rust

Undercoating offers a layer of protection against corrosion and rust. Any debris will be repelled by the undercoating.You can expect years of protection from undercoating although it wears out in the end. This is the reason why the process is popular.

2. To extend the life of vechile

Corrosion isn’t just about causing an issue with the metal under your car but it can also get into cables and wires – in fact anything made of aluminum or steel can be affected including the engine and transmission.

3. Cover small damages

You can undercoat damaged parts of the car such as scratches, chips and nicks caused by debris flying up as you drive.Modern undercoating can cover small areas of damage.

4. Many options

There are different methods to choose from. One is electronic which is used to stop the corrosion of rust already present.Then have standard undercoating which applies a thick, tar-like substance.Another option is dripless oil spray with fills the body of the vehicle with something wax-like and then sets hard.Finally there is the drip-oil way which can drip for up to 2 days.

5. Reduce noise under car

undercoating vehicle will reduce noise inside car.

The Vechicle Undercoating Cons

Its not effective on cars with corrosion

Applying undercoat over rust means that although stopping more moisture and airflow to the rusted area, the rusting process will still keep happening.An undercoat will slow down the corrosion rather than reverse or stop it. should attempt to remove the rust before applying an undercoat.This isn’t always easy though, since rust can penetrate deeply into the metal, so encapsulating the rust and then applying an undercoat could be a waste of money.

2. Doesnt work so well on old cars

Undercoating doesn’t work so well on old cars because the residue from under the car has to be removed before the undercoating is applied.If don’t remove the debris first, the already-present debris will be sealed in.

3. Its useless on new cars

Undercoating might not be wise if tend to change cars every few years, since it takes between 3 and 5 years before rust starts to show.In fact it might be 10 years before car is affected in any way at all by corrosion.This means if get a new car every few years then undercoating it would be a waste of money because it simply isn’t required.

4. It makes vehicle heavier

It makes the vehicle 10 to 20 pounds heavier which affects fuel economy (how far you can travel on one tank of gas).This is negligible in terms of fuel costs but still something to bear in mind.

CONCLUSION

The undercoating of cars is explained in detail in above so iam concluding my script that i have done.