Copper element welding method and device

• Main Authors: XIAO QIULEI, ZHANG XIU'EN, LIANG YU, XU PINGWEI, OU MEIGUI
• Format: Patent
• Language: Chinese; English
• Published: 01.06.2021
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention relates to a copper element welding method and device. Aiming at the characteristics of high conductivity and low resistance of electrical copper, local contact of a welding end face is adopted to carry out gasification blasting cleaning and smooth a welding end face, a certain stress is applied after blasting is carried out for a period of time, and the contact area of two end faces is increased by utilizing deformation of the copper, so that the current density is linearly reduced; and an interface resistor on the end face is used for rapid heating, a final joint face is attached through full plastic deformation of the end face, liquefied copper is extruded out, and the welding face is welded at the temperature lower than the melting point of the copper through deformation recrystallization. According to the copper element welding method and device, welding flux and welding zone melting are not needed, so that the welding precision is high, no other impurity alloy elements are introduced, no r