| 摘要 |
1531207 Renewing working surfaces of electrodes HERAEUS ELEKTRODEN GmbH 20 Sept 1977 [22 Sept 1976] 39036/77 Heading C7B The plate-like working surfaces of metal electrodes e.g. perforated or expanded metal sheets 1, secured by spot welds 4 to sheet metal members 3 having an electrical connection to a metal rod 2 (current terminal), are renewed by releasing the welded connection between the working surfaces and sheet metal members, punching or boring out the points at which welded connection is formed, providing the working surfaces removed with new active coatings and reconnecting to the same members by spot welding. Resilient connecting members 5 may be used. Sheets 1 and members 3 may be of Ti, Nb or Ta. Specification 1435683 is referred to. |
