| 摘要 |
1502525 Abrasion wheels EDENVALE ENG WORKS PTY Ltd 31 March 1976 [7 April 1975] 13047/76 Heading B3D [Also in Division B5] A grinding wheel which comprises a hub portion and bonded thereto a peripheral grinding portion is made by cold compacting a first portion in a mould and leaving the first portion in a green state in position in the mould, providing a mould cavity which defines the other portion adjacent the green state portion, introducing the necessary ingredients for the second portion into the cavity and applying heat and pressure to both to form the wheel. |
