METHOD FOR COATING METALLIC SURFACES AND USE OF THE SUBSTRATES COATED IN THIS MANNER

摘要

The invention relates to a method for coating metallic surfaces by a mangane se- zinc phosphatizing process, using an aqueous phosphatizing solution, in whic h nickel is deliberately not added. Said method is characterized in that the zinc: manganese weight ratio of the phosphatizing solution is maintained in the region of between 0.05: 1 and 0.99: 1 and that the phosphatizing solutio n has the following contents: between 0.05 and 5 g/l zinc, between 0.075 and 5 .2 g/l manganese and between 0.008 and 0.050 g/l copper and/or hexafluoride complexes of titanium, hafnium and/or zirconium totalling between 0.002 and 0.5 g/l, calculated as F6. The invention also relates to the use of the meta l parts coated in this manner.