| 摘要 |
Apparatus and method of grinding an inner surface of a tank (12) the tankc consisting of a convex first part (12b), a convex second part (12c) and a cylindrical part (12a) by providing a a frame (14) for holding the tank (12) and a stand (16) rotably connected to the frame (14). Initially, the frame assumes a horizontal position and an amount of grinding material (28) is placed into the tank covering a part of the inner surface of the tank between the parts. Thereafter the cylindrical tank is rotated about the central axis causing the grinding material to move in a sliding and non-tumbling movement relative to the inner surface. The last step is repeated in a first tilted position and in a second tilted position wherein the grinding material extends on the inner surface between the cylindrical part and the respective points of interception between the parts and the central axis of the tank. |
