Flux-cored wire for inhibiting mutual diffusion of elements between steel pipe column and coating and preparation method

The invention discloses a flux-cored wire for inhibiting mutual diffusion of elements between a steel pipe column and a coating and a preparation method. Belongs to the technical field of high-temperature alloy reinforced surface engineering. Comprising metal type flux core powder and an alloy belt skin, and the alloy belt skin is an Inconel 625 nickel base alloy belt skin. The powder coating rate of the flux-cored wire ranges from 20 wt% to 25 wt%. Manual TIG welding is adopted for cladding on the surface of the Q345 low alloy steel, argon can effectively isolate air around a welding pool, nitric oxidation of metal in the pool is avoided, tungsten electrode electric arcs are stable, the fusion depth is small, heat input in the welding process is easy to adjust, the cladding layer forming quality is high, and the method is suitable for all-position welding and preparation of the cladding layer. 抑制钢管柱与涂层间元素互扩散的药芯焊丝及制备方法。属于高温合金强化表面工程技术领域。包括金属型药芯粉末与合金带皮；所述合金带皮为Inconel 625镍基合金带皮。所述药芯焊丝包粉率为20~25wt.%。本发明采用的手工TIG焊在Q