A method for passivating the surface area of coated metal strips and apparatus for the application of the passive layer on a metallic coated steel strip

摘要

The invention relates to a method for the passivation of the surface of covered with a coating metal strips, in particular of tin-coated steel bands (s) which, with a belt speed (v) are moved by a coating system. In order to achieve an efficient passivation of the metal band surface to allow even at high band speeds and at the same time a lubrication of the coated metal band surface is, according to the coating process, on the coated and with the belt speed (v) moving metal strip is an aqueous solution of a surface-active substance is sprayed. The present invention furthermore shows a device for the application of a metallic coating on a steel strip, in particular in a band tinning installation, as well as the use of substances for the lubrication and / or for the passivation in the production of tin-coated steel bands, which in the form of an aqueous solution to the tin-coated steel strip can be sprayed.