Method for producing a protective reinforcement for a blade having a curved leading edge or trailing edge

The invention proposes a method for producing a protective reinforcement for the leading edge (BA) or trailing edge of a blade (P), the leading edge (BA) or trailing edge being curved, the method comprising steps of flattening (102) a hollow tube (1) so as to form at least one fold line (6) extending along the tube (1), opening (104) the flattened tube (1) by cutting the tube (1) along a cutting line (8) opposite the fold line (6) with respect to the tube (1), so as to form two flanks (16, 18) linked at the fold line (6) and intended to be mounted on the pressure side and the suction side of the blade (P), the method being characterised by a preliminary step (100) of bending the hollow tube (1) carried out before the flattening (102) and adapted such that the fold line (6) after flattening(102) is curved and substantially matches the curved leading edge (BA) of the blade (P). 本发明提出种用于制造叶片(P)的前缘(BA)或尾缘的防护增强件的方法，所述前缘(BA)或尾缘是曲线形的，所述方法包括如下步骤：将中空管(1)整平(102)以形成沿着所述管(1)延伸的至少条折线(6)；通过沿着关于所述管(1)与所述折线(6)相对的切割线(8)切割所述管(