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

Abstract

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 metallurgical reaction behavior is intensified, combustion of powder is more sufficient, the smoke dust generation amount is reduced, and environmental pollution and harm to the body of a welder are reduced.

Description

technical field

[0001] The invention belongs to the technical field of carbon steel flux-cored welding wire, and relates to a low-smoke environment-friendly carbon steel flux-cored welding wire. Background technique

[0002] Since the traditional carbon steel flux-cored welding wire must be added with various alloy powders such as slagging agent, arc stabilizing agent, deoxidizer, and combustion accelerant during the manufacturing process, a large amount of smoke and dust will be generated in the welding wire when the workers are working on the welding wire. . According to statistics, the amount of welding wire fume generated during welding is 7-10 g / kg welding wire. In addition to causing environmental pollution, welding fume also has an impact on the health of welders, which can easily lead to many occupational diseases such as: lung cancer, manganese poisoning, and electro-optic ophthalmia. Inflammation, skin allergies, skin cancer, respiratory infections, etc. At prese...