Activated stranded wire welding wire for increasing penetration depth

Abstract

The invention discloses an activated stranded wire welding wire for increasing the penetration depth. The activated stranded wire welding wire is composed of an integrally-stranded multi-strand solid welding wire body, and an active agent with which the gaps of the stranded welding wire body are filled through extrusion. The cross section of the welding wire body is circular, and the diameter of the welding wire body ranges from 1.5 mm to 12.0 mm. The integrally-stranded multi-strand solid welding wire body is formed by stranding the solid welding wire in the middle axis, namely, the central wire, and 4 to 12 strands of solid welding wires around the central wire, namely, the peripheral wires. The active agent is composed of, by mass, 50% to 60% of SiO2, 10% to 20% of TiO2, 10% to 20% of Cr2O3, 0% to 12% of NaF, 0% to 11% of LiF, 0% to 8% of potassium fluozirconate, 0.1% to 1.0% of sodium stearate and 0.1% to 1% of yttrium oxide. The welding wire is large in welding penetration depth, an electric arc is stable, a weld joint is well formed, and the welding wire can have any length, is suitable for continuous automatic welding and can be used for electric arc welding, submerged-arc welding and electroslag welding of gas protection.

Description

technical field [0001] The invention relates to a welding material, in particular to an active strand welding wire capable of increasing penetration during welding. Background technique [0002] With the rapid development of industrial technology, large-scale and highly parameterized welded structures are increasing, and these welded structures require a large number of medium and thick plates to be manufactured. Submerged arc welding and gas shielded welding are the main processes for welding medium and thick plates at present. Increasing the welding penetration can not only reduce the size of the groove, reduce the amount of filler metal, and improve welding production efficiency, but also reduce the probability of defects such as lack of fusion and improve the safety of the welded structure. [0003] The welding wire used in submerged arc welding and gas shielded welding includes two types: solid welding wire and flux cored welding wire. At present, the diameters of com...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of existing flux-cored welding wires such as high cost, inferior wire feeding performance and poor wire feeding stability, as well as the disadvanta

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