標準號：IS 11826-1986
發布日期：1987/3/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：1.1 This recommended practice is intended as an aid in establishing and maintaining a procedure for chemical colouring of metallic fabricated components used in engineering industries from steel, copper, brass, zinc, cadmium, aluminium, etc.1.2 Metal colouring processes are employed mainly for decorative pur-poses. Sometimes the colour produced has a functional purpose like identification, corrosion resistance, etc.1.2.1 Chemical colouring of metals is the process of imparting a desired colour to the surface of the metals by chemical means for achieving either one or all of the characteristics mentioned under 1.2.1.2.2 Chemical colouring may be applied to a wide range of metals and its alloys and also to articles electroplated. The electrodeposit shall be of sufficient thickness to withstand the action of the colouring chemicals applied.