A kind of seamless self-protection flux-cored wire, the present invention adopts low carbon steel strip as the outer skin of the wire, and then sets the flux-cored powder inside the outer skin, and the flux-cored powder in the present invention uses lithium fluoro-barium as the main gas and slag making agent, in the process of welding, lithium fluoro-barium is more easy to gasify under the action of the heat of the arc, and the formation of the protective gas capsule protects the molten pool and the molten drop, and prevents the infringement of the air oxygen and nitrogen on the molten pool and the molten drop, at the same time, compared with the lithium fluoro-barium or calcium fluoride, it can achieve shorter arc control, which is more conducive to all-position welding and reducing the infringement of air on the molten pool and the molten drop. At the same time, compared with barium fluoride or calcium fluoride, lithium fluorobarium can achieve shorter arc control, which is more conducive to all-position welding and reduce the infringement of the air on the molten pool and the molten droplet, etc. The present invention is particularly suitable for X80 pipeline steel, long-distance pipelines, oil storage tanks, bridges, marine platforms, high-rise steel buildings and other fields, and can solve the problems of the existing seamless self-protecting flux cores that are susceptible to moisture absorption, easy to rust, and difficult to transport and storage, etc..
At present, we produce 11 kinds of seamless flux-cored wires, AK-50M series and AKM-50 series. In the “products” section, we provide a detailed description of the two series of seamless flux-cored wires. You can refer to them.