▎ 摘　　要

NOVELTY - A solder additive for brazing of high nitrogen steel, comprises a reinforcing agent, a water-based adhesive and a BJQ mixture in a mass ratio of 1:7 to 8:3 to 5. The reinforcing agent is nickel-plated graphene or vanadium-plated graphene or a mixture of any two of the mass ratios. The BJQ mixture is a mixture of bismuth glass powder, fumed silica and tartaric acid in a mass ratio of 1:3.5:1. USE - Solder additive for brazing of high nitrogen steel. ADVANTAGE - The high nitrogen steel base material hardly melts thus the nitrogen element is not lost and does not deform, which improves the joint strength and mechanical properties of the joint to a certain extent and the welded joint is very well formed.