Electron emission device vacuum sealing method and system based on electron beam welding

• Main Authors: XUAN YANG, GUO BAOCHAO, MA CHUNWEI, XIN ZHENGGAO, MI DAWEI, BU JIAWEI, YU YU
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; COMBINED OPERATIONS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WELDING; WORKING BY LASER BEAM

The invention provides an electron emission device vacuum sealing method and system based on electron beam welding. The method comprises the steps that a vacuum cavity is divided into an anode cover plate and a cathode cavity; a vacuum sealing joint is arranged to connect the cathode cavity and the anode cover plate; the vacuum sealing joint is of a step structure, a microwave sealing spring is installed on the inner side step end face of one side of the cathode cavity, and a raised edge is arranged; a non-magnetic stainless steel flange is welded on a step on the outer side of a vacuum sealing joint of the anode cover plate and the cathode cavity, a non-magnetic stainless steel surface is used as a sealing surface, a groove is formed in the stainless steel sealing surface on one side of the cathode cavity, and a C-shaped vacuum sealing ring is mounted in the groove; bolts are arranged on the outer side of the non-magnetic stainless steel sealing flange connector, and the stainless steel vacuum sealing surfac