Method for producing cutting blades

A method for producing a disposable wood chipping cutting blade with a profiled cross section having cutting edges and scratching edges oriented perpendicular to the cutting edges, the method comprising:

• heating a steel or iron-based alloy material to a temperature that is greater than room temperature and lower than a conversion temperature Ac1;
• cold rolling the steel or iron-based alloy material to form a profile blank whose cross-sectional profile comprises a guide path groove arranged between opposite facing edge regions;
• subjecting each edge region to metal-removal machining to form the cutting edges and the scratching edges oriented perpendicular to the cutting edges;
• and
• after the metal-removal machining, subjecting the edge regions to hardening to achieve to a hardness of at least 58 HRC,
• wherein the cutting edges are defined by flanks oriented a first wedge angle “β” of 26 degrees to 34 degrees,
• wherein the scratching edges are arranged on ends of tapered projections defined by a second wedge angle “α” of 25 degrees to 33 degrees, and
• wherein the tapered projections are located on an opposite side of the cutting blade from a side having the guide path groove, and
• wherein the disposable wood chip cutting blade is produced after the hardening.