COLOUR MARKING METAL SURFACES

摘要

Apparatus related to marking a metal surface are provided. The solution comprises receiving (600) control data comprising information on the marking of a pattern on the metal surface;controlling (604, 606) a temperature control unit and a gas unit to produce a temperature and atmosphere in space under a cover on the basis of the control data;controlling (602) the focus and bandwidth of a laser marking unit on the basis of the control data to produce the pattern defined in the control data on the metal surface; and controlling (608) a coating unit on the basis of the control data to produce a coating on the metal surface.