ED Coating Plants

CED PLANTS
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, and pleasant in appearance having very Good Salt Spray life and is sought for by all automobile users.


Anode cell installed in ced bath	CED bath (water filled) without anode cell installed	CED bath (under filling) with anode cells installed

ELECTRO - DEPOSITION COATING (ED COATING PLANTS)
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.

E-COAT PROCESS	Customers today demand higher quality and durability from the products they buy. Not only do they expect these products to perform well, but they want the finish to look good and resist corrosion for a much longer period of time. This finishing processes is designed which is called as electro coating (E-coating).
E-coating is a method of painting which uses electrical current to deposit the paint. The process works on the principal of "Opposites Attract". This process is also known as Electro Deposition (ED). The e-coat process can be divided into these four distinct zones: Pretreatment Electro coat Bath and Ancillary Equipment Post Rinses Bake Oven

ADVANTAGES OF ELECTRO - DEPOSITION OVER CONVENTIONAL PRIMER :
  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.

SPECIFICATIONS :
A) Number of stations in C E D baking oven

7
Oven operation Stop & go type
PT – CED PROCESS SCHEDULE

ABBREVIATIONS: - TAL = TOTAL ALKALI, FAL = FREE ALKALI, TA = TOTAL ACIDITY, FA = FREE ACIDITY, ACC = ACCELERATOR CONTENT, EC = ELECTRICAL CONDUCTIVITY.