| 摘要 |
The invention relates to a movable backing system (1) to clamp plate-shaped backing workpieces (W) for friction agitation welding and friction stir welding and to a friction agitation or stir welding system. The movable backing system (1) comprises an upper unit (20) to be arranged above the backing workpieces (W) to support the backing workpieces (W), a lower unit (30) to be arranged below the backing workpieces (W) to support the backing workpieces (W), and a connecting means (40) connecting the upper and the lower unit (30) to be arranged in a gap between the backing workpieces (W) to be welded. |
