
Tungsten copper cap electrode, the bottom plate is provided with two positioning posts and a “Y”-shaped positioning groove, the electrode joint is a circular connecting piece, the ring is sleeved into the positioning post, the tail is embedded in the positioning groove, and the wire is from ” The lower end of the Y-shaped positioning groove is led out, the positioning groove defines the displacement of the electrode joint, the positioning post passes through the electrode, the electrode, the electrode…