Electro-deposition enameling (ETE)

Electro-deposition enamelling (ETE) is a process for coating workpieces with an enamel layer using electrochemical processes. This process combines the advantages of the dipping process with precise control by means of electrical voltages, allowing an even and adhesive enamel coating to be applied.

In the ETE process, the workpiece is first thoroughly cleaned and immersed in an immersion bath containing a suspension of fine enamel particles, water and additives. By applying an electrical voltage, the workpiece is integrated into the circuit either as a cathode or anode. The electric field effect causes the enamel particles to migrate to the surface of the workpiece, where they are deposited evenly.

After electrostatic deposition, there is a drying phase, followed by a firing process at high temperatures. During the firing process, the enamel particles fuse together to form a hard, resistant layer that is characterized by high corrosion resistance, chemical resistance and a smooth, aesthetic surface.

Electro-deposition enameling is used in various industries, including the household appliance industry (e.g. for washing machines and ovens), sanitary technology and mechanical engineering. The process offers a high level of process control, low material loss and a uniform coating thickness, even on complex-shaped workpieces. It is considered particularly environmentally friendly as no solvents are used and the amount of waste is minimized.