Chemical pretreatment of continuous galvanized steel sheet in the automotive industry

摘要

Since several years, new products appeared on the market replacing classic phosphate - based conversion coatings. This presentation will focus on the replacement of tricationic zinc phosphating systems far theautomotive industry. The basic chemistry and coating properties are presented.In the second part of the presentation, an outlook will be given on anti-corrosion packages for the comingdecade. An example of a very lean automotive paint shop will be discussed.