| 摘要 |
The invention relates to a Belleville spring washer comprising a base body 2 of annular profile, from which branches like tongues 3 project radially outwards and/or inwards; the ends 4 of the tongues are provided with greater hardness than that of the base body 2 of the Belleville spring washer, this greater hardness being produced by treatment by particle radiation, like an electronic beam or laser beam, in the shape of points 8, in the shape of serpentine lines 9 or else in the shape of parallel lines 10. Application to friction clutches. <IMAGE> |
