Deposition equivalent

The deposition equivalent in electrocoating (ETL) indicates the amount of electricity required to deposit a certain amount of paint on a surface. This quantity is measured either in ampere seconds per gram (As/g) or in ampere seconds per milliliter (As/ml).

In ETL, a conductive surface is immersed in a bath of paint emulsion and an electrical voltage is applied. The paint particles migrate to the surface and form a uniform coating. The deposition equivalent is a measure of the efficiency of the process, as it relates the electrical energy required to the amount of paint deposited. A lower deposition equivalent indicates a higher efficiency, as less electrical energy is required to deposit the same amount of paint. This is particularly important for optimizing energy consumption and controlling costs in the coating process.