Ecoat
Systems
Erzinger’s cathodic electroplating (KTL) painting lines are built to the strictest quality requirements.
Batch coating lines are systems equipped with a set of tanks for immersing the package of parts and a handling system for transferring the skids throughout the process. All the tanks have agitation and, if necessary, temperature control in order to guarantee the efficiency of the electroplating process. They have a high level of automation and can be integrated with 4.0 systems to monitor the line’s performance.
E-coat painting lines are characterized by simplified automation and high productivity. They are built to adapt to the different spaces available, through the development of layouts customized to the client’s needs.
Erzinger has the entire portfolio of adjacent products necessary for the proper functioning of this type of solution.
Pre-treatment
Its purpose is to act on metal surfaces by chemical deposition. The main objective is to guarantee the final resistance of the product against corrosion and excessive wear of the parts, as well as providing anchorage for the coating.
Ecoat Tank
The main tank used to paint parts using the electrodeposition process. The object to be painted is immersed in a bath of paint diluted in deionized water and, through a difference in electrical potential, an organic coating is deposited. This coating forms a uniform, cohesive film on the surface of the part.
Anodes
The part to be painted is the cathode of the circuit, the negative pole of the rectifier is connected to it, while the positive pole (anode) is housed inside the dialysis cells. These remove the acid that is continuously released during the painting process, ensuring constant pH and conductivity.
Ultra-filtered tanks
Ultrafiltered tanks remove excess E-Coat paint deposited on parts after the painting process. The bath used is called permeate. Rinsing the parts with the permeate allows the paint that has not adhered to the part, but has been mechanically dragged by it, to be recovered.
Movement System
It consists of transfer trolleys that move and lift the skids throughout the production process. The trolleys are automatic and follow programming instructions that set the time for each stage.
How the
System Works
Electroplating is a painting process that works on the principle of the attraction of opposite poles.
It occurs when a conductive metal object, immersed in a paint bath, is subjected to an electric current, while it is connected to one of the poles and the paint particles or electrodes to the other pole. The result is always a continuous and uniform coating.
Application process
Below is an example of how baths can be composed in an E-Coat line.
Pre-treatment
Degreasing
Rinse 1
Decapante
Rinse 2
Neutralizer
Refiner
Phosphate
Passivator
Rinse 3
Pre-treatment
Ecoat
Ultra filtered 1
Ultra filtered 2
Drying
Oven
