In copper electrolytic refining,high quality cathode copper can be produced by adding WHN1 together with suitable amount of gelatin and sulfocarbamide.
This articel has detailes introductions on application of cold working technology and popularization of diamond tools in processing cathode carbon block,in order.
Several kinds of tungsten thermonic cathode were introduced.Moreover, the advances in the cathode with a monoatomic layer on the molybdenum substrate were reviewed.
To realize the high efficiency of dernisting, thenew type cathode wires and anode tubes with superperformance were developed for increasing the current density and field intensity.
Brazing quality and product reliability are both increased as using high frequency pulse microplasma arc heating process for assembly brazing of cathode and photoetching grid of electron tube.