A seamless flux-cored welding wire with good vertical welding manufacturability

Abstract

The invention discloses a seamless flux cored wire with good vertical position welding manufacturability, and relates to the field of welding materials. The seamless flux cored wire is composed of low carbon steel outer skin and flux core powder, and the flux core powder is prepared from the mixing of materials, by mass, 35%-50% of rutile, 2%-4% of dehydrated feldspar, 4%-6% of aluminum magnesium alloy, 2%-3% of ferrotitanium, 9%-14% of low carbon ferromanganese, 1%-2% of zircon sand, 3%-8% of aluminum oxide, 4%-6% of quartz, 0.5%-1% of sodium fluoride and the balance iron powder. According to the seamless flux cored wire with the good vertical position welding manufacturability, the flux core powder is added online synchronously, after the flux core powder is added into the outer skin steel belt, the outer skin steel belt is then subjected to rolling forming and welding seaming, and afterwards subjected to annealing, reducing and copper plating so that the seamless flux cored wire can be prepared. The prepared seamless flux cored wire is stable in mechanical property, low in diffusible hydrogen, high in moisture absorption performance, excellent in antirust performance, and good in welding manufacturability; meanwhile, all-position welding can be conducted, the seamless flux cored wire is particularly applicable to welding of position of vertical welding, and can be used for welding of a D36 level steel plate.

Description

technical field [0001] The invention relates to the field of welding materials, in particular to a seamless flux-cored welding wire with good vertical welding manufacturability. Background technique [0002] In recent years, my country's steel and welding consumables have transitioned from high-speed development to a period of steady development in which outdated production capacity is eliminated and innovation drives transformation and upgrading. The structural adjustment and product upgrading process of welding consumables products will be significantly accelerated. In technical fields such as welding, due to the large amount of welding engineering, the demand for automated and efficient welding methods is more urgent. [0003] Because flux-cored wire can realize continuous automatic welding, which promotes the automation and high-efficiency development of welding technology, and the composition of flux-cored wire is easy to adjust, it has been widely used. In addition to ...

AI Technical Summary

Problems solved by technology

At present, most flux-cored welding wires can meet the requirements of use, but as the thickness of the marine steel plate decreases, the weld bead is poorly formed when the welding wire is welded vertically without swinging, and the welding throat is too large, which will cause stress concentration at the welding toe. Potential hazard to structure

The seamless flux-cored welding wire described in Chinese Patent Publication No. CN105014259A is applied to the field of brazing, and the seamless flux-cored welding wire described in Chinese Patent Publication No. CN105057925A is a metal powder core type and cannot be used for all-position welding

After searching, no seamless flux-cored wire related to this application can be found that can be welded in all positions and has good vertical welding processability.

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