▎ 摘　　要

NOVELTY - The welding agent comprises 4-6 wt.% magnesium powder, 2.5-3.3 wt.% silicon-calcium powder, 1-2 wt.% copper powder, 3-4 wt.% nickel powder, 3-4 wt.% niobium powder, 1-2 wt.% graphene, 2.2-5.4 wt.% lanthanum hexaboride powder, 1-2.7 wt.% lanthanum powder, 7.3-10.5 wt.% potassium fluoborate powder, and 2.5-4 wt.% calcium sulfate powder, where the aluminium powder is supplemented to 100 wt.%. USE - Aluminum bus electrified repairing welding agent. ADVANTAGE - The agent improves the conductive performance, and has better hardness, tensile strength and corrosion resistance. The welding agent improves the tensile strength of the welding seam, fatigue performance and toughness, by using a certain proportion of magnesium powder and silicon-calcium powder, and by adding magnesium element. The welding agent improves the surface finish, and reduces the corrosion resistance and conductivity. The corrosion resistance is reduced. The dosage of the magnesium powder is improved to a better effect on a certain limit.