Micro-smoke environment-friendly carbon steel flux-cored wire

The invention belongs to the technical field of carbon steel flux-cored wires, and relates to a micro-smoke environment-friendly carbon steel flux-cored wire. The welding wire powder is prepared from, by weight, 30%-35% of rutile, 11%-13% of wollastonite, 11%-13% of low-carbon ferromanganese, 1%-5% of silicate, 0.3%-1.2% of iron boride powder, 3%-8% of zirconite, 3%-6% of nickel, 0.5%-2% of ferrotitanium and the balance iron powder. According to the method, part of raw materials are melted and atomized to form a composite material, then the composite material is mixed with other materials to prepare welding wire powder, and more than 80% of low-melting-point harmful impurities (such as S, P and compounds thereof) are removed in the powder preparation process. And the burning loss of alloy elements is reduced, and the deposition performance of weld metal is facilitated. According to the welding wire prepared through the method, the droplet transition period of the welding wire can be prolonged, the metallurgic