▎ 摘　　要

NOVELTY - Graphene-reinforced TA1-Q345 middle layer welding wire comprises a medicine core and a welding skin. The medicinal powder comprises 30-40 wt.% vanadium powder, 30-40 wt.% niobium powder, 10-20 wt.% silver powder, 5-10 wt.% silicon powder and 0.1-0.5 wt.% graphene. USE - Used as graphene-reinforced TA1-Q345 middle layer welding wire. ADVANTAGE - The welding wire: solves the problem that the TA1Q345 laminated composite board cannot be directly welded butt; and prepared in a simple manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene-reinforced TA1-Q345 middle layer welding wire.