Method for producing a chromate film-containing plug metal component

摘要

A method for producing a chromate film-containing plug metal component (13, 24, 25, 30, 55, 55') is described. The method comprising the step of immersing the plug metal component into a bath which contains at least one of an organic dye and an organometallic composite dye. In a first method the plug metal component is immersed into a mixture of chromate film-forming substances and the dye, and in a second method the plug metal component is first immersed into a chromate film-forming bath and thereafter into a colouring bath comprising the dye.