A method for the production of an electrode for vacuum circuit-breakers or vacuum spark gaps

摘要

1459475 Electrodes for vacuum switches ENGLISH ELECTRIC CO Ltd 4 April 1975 [23 May 1974] 23127/74 Addition to 1194674 Headings H1N and H1D In the manufacture of a vacuum interrupter electrode as claimed in claim 9 of the parent specification a plate 4 of the low melting point metal is supported on the top surface of a horizontally supported disc 1 formed as a matrix of the high melting point metal particles sintered together and the assembly 1, 4 is heated within an evacuated enclosure (not shown) to a temperature and for a time sufficient to remove deleterious traces of oxygen from the plate and disc without melting the plate. The assembly 1, 4 is then heated to a higher temperature sufficient to melt the plate and cause it to infiltrate the matrix. A plurality of discs 1, 11 and plates 4, 14 may be treated together and support themselves in a column including mild steel separating plugs 6.