基于Q460钢的名义成分设计了电弧熔丝增材制造建筑钢十向节点专用药芯丝材的成分，制备了药芯丝材并研究了其工艺性能；利用该药芯丝材，采用电弧熔丝增材制造技术制备建筑钢十向节点，研究了其尺寸精度、组织和力学性能。结果表明：试验制备药芯丝材在电弧熔丝增材制造过程中的电弧稳定、飞溅小，堆积金属无裂纹、气孔等缺陷；采用该药芯丝材电弧熔丝增材制造建筑钢十向节点的成形精度符合要求，组织主要由细小铁素体和少量珠光体组成，其拉伸性能、室温和-40℃冲击性能均满足传统Q460钢十向节点的力学性能要求。

Based on the nominal chemical composition of Q460 steel, the composition of a special flux cored wire was designed for the wire-arc additive manufacturing of building ten-directional steel point. The flux cored wire was prepared and its process performance was studied. The building ten-directional steel point was fabricated by the wire-arc additive manufacturing technique with this flux cored wire, and the dimensional accuracy, microstructure and mechanical properties were studied. The results show that the flux cored wire prepared by the experiments had stable arc and small spatter during the wire-arc additive manufactuning. No cracks, pores and other defects were formed in the depositing metal. The forming accuracy of the ten-directional building steel point by the wire-arc additive manufacturing with the flux cored wire met the requirements. The microstructure consisted of fine ferrite and little pearlite. The tensile properties and impact performance at room temperature and -40℃ met the mechanical property requirements of the traditional building ten-directional steel point of Q460 steel.