| 摘要 |
For pulling concave dents out of sheet metal, a device is used that has a base body made of metal on which a pulling device engages. In the base body at least one, preferably a plurality of pull electrodes are disposed, which are guided in passages and can be moved in relation to the base body. The electrodes are welded together with the sheet metal and subsequently a pulling force is applied to the base body such that the dent is pulled out. The contact surface between the base body and the electrodes is provided with a coating that firmly bonds with the surface of the base body, particularly an anodization. |
