Cathode Electro Deposition is most advanced and environment friendly Water Based coating to be done on metal components. A combination of dip and spray ensures reach of paint at every corner of component having intrinsic shape as well.
CED is chemically resistant, mechanically durable, pleasant in appearance having very Good Salt Spray life and is sought for by all automobile users.
Electro-deposition of primer coating has become universal for a modern automotive paint shop. In ED, charged particles from the paint emulsion move to Anode (AED) or Cathode (CED) under electrical forces. The direct current established through the bath makes the pigment and resin base
of the paint wander towards the body surfaces.
Coating reaches all the recessed area. Deposited film does not re-dissolve. However, the un-deposited material is rinsed. Ultra filtrate (UF) equipments are used for ED paint ingredients separation of those not forming film and recovery of Paints. Deposited film after stoving becomes hard, durable polymeric film.
The CED process can be done in Batch Type (Dip Tanks) or continuous conveyorised type.
The major steps in CED process are:
Pre-Treatment
CED
Ultra Filtration
Curing
Fully automatic operation, film thickness can be controlled.
Uniform coating
Better coverage in box and interior surfaces
Good coverage of sharp corners
No runs and sags
No solvent boils
Better chip and corrosion resistance
Nearly 100% paint utilization.
Superior in anti-pollution, safety, health hazards.
