CHOPPER KNIFE WITH HARDENING COATING

摘要

A chopper knife (100, 200) for an agricultural machine comprises a plate-shaped blade (105) having a front region (120) and a rear region (110). The blade is confined in transversal direction by longitudinal edges (106, 107). The front region comprises at least one elongate cutting edge (150, 151) provided with a coating (140, 141) extending along a surface of the blade over a width (d) perpendicular to a longitudinal edge. The width (d) of the coating (140, 141) decreases in a direction (D) from the front region (120) towards the rear region (110) of the blade (105).