Shear blade, device and shearing method suitable for trimming high-strength steel

The embodiment of the invention provides a shear blade, device and shearing method suitable for high-strength steel trimming, the shear blade is an annular piece, the two side faces, perpendicular to the axial direction, of the shear blade are annular planes, the outer side face, in the annular direction, of the shear blade is an outer shear blade face, and the inner side face, in the annular direction, of the shear blade is an inner shear blade face; according to the trimming shear, the shearing quality defect caused by the problems of shear blade breakage, edge blocking and the like is remarkably improved, the non-planned repair rate caused by the shearing quality problem of the trimming shear is greatly reduced, the product satisfaction rate is increased, the repair rate of a high-strength steel product is reduced, the production cost is reduced, and the production efficiency is improved. The production line is stable in production, and the trimming quality is guaranteed. 本申请的实施例提供了一种适用于高强钢切边的剪刃、装置及剪切方法，所述