| 摘要 |
The aim of the invention is the reduction of the impairment in current transfer from the contact plate (112), forming part of the electrode support arm (11), to the contact block (12), interacting with the electrode, caused by deposits between the contact plate (112) and the contact block (12) due to erosion during the fusion operation. Said aim is achieved, whereby the contact block (12) which may be brought into planar contact against a partial region of the electrode (21), is provided with a medial passage (124), running to the support arm (11), for removal of at least the large part of the erosion, said passage having a continuation (111) in the support arm (11). |
