Method for coding a plate-like workpiece, method for identifying a plate-like workpiece, radiation processing device and coding system

摘要

The method according to the invention for coding a plate-like workpiece (4), in particular a sheet, comprises: defining a coding region (13); Applying a magnetic layer (7) to the surface of the workpiece (4); Merging portions of the magnetic layer (7) with the surface of the workpiece (4) by subjecting the workpiece (4) to radiation (3) within the coding region (13); Cooling the workpiece (4); Removing the unfused parts of the magnetic layer (7). The method according to the invention makes it possible to make workpieces easily traceable independently of any surface treatments that may or may not be performed later.