| 摘要 |
The subsequent fitting of a terminal bolt 1, consisting of an insert 3 (which is sheathed with lead and consists of copper or brass) to a pole link 5 is carried out by the bolt end being pointed and the bolt being butt-welded directly to the link via this end. In the final state, the insert, which is more conductive than lead, projects into the pole link, and a collar 6, which is formed by material displacement during the welding, also reinforces the lead sheathing 2, which protects the insert 3 against acid corrosion, in the transition region. <IMAGE>
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