Flux-cored wire, preparation and application thereof

A technology of flux-cored welding wire and flux core, applied in welding equipment, welding medium, manufacturing tools, etc., to achieve good crack resistance and stable impact toughness at low temperature

Active Publication Date: 2011-08-24
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In some developed countries, high-strength steel has its matching flux-cored welding wire, but at present, most of the welding materials used for high-strength s...

Method used

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  • Flux-cored wire, preparation and application thereof
  • Flux-cored wire, preparation and application thereof

Examples

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Embodiment

[0046] For the flux-cored welding wire of this embodiment, the composition of the flux core and its percentage content in the total mass of the flux-cored welding wire are as follows: TiO 2 , Mn, Si, SiO 2 , ZrO 2 , MgO, A1 2 o 3 , CaCO 3 , CaF 2 , Cr, Mo, Ni, V, Fe, Mg, Al.

[0047] The preparation method of the flux-cored welding wire in this embodiment: use the steel strip method to produce the flux-cored welding wire, O-shaped butt joint, fill the outer skin made of low-carbon steel strip with powder, the filling rate is 14~22%, and reduce the diameter after forming Finally, a finished welding wire with a diameter of 1.0~1.6mm is obtained.

[0048] The application of flux-cored wire in this embodiment: use argon-rich gas (Ar80%+CO 2 20%) under the protection of the flux-cored welding wire of the present invention at room temperature 25°C and relative humidity of 70%, the flux-cored welding wire of the present invention with a diameter of Φ1.2mm uses a current of 220...

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Abstract

The invention discloses a flux-cored wire, which consists of a sheath and a flux core, wherein the sheath is made from low-carbon steel; the flux core is 14 to 22 percent based on the mass of the flux-cored wire; based on the total mass, the flux core comprises the following components in percentage by mass: 1.6 to 5.0 percent of TiO2, 0.4 to 1 percent of SiO2, 1.0 to 3.0 percent of Mn, 0.2 to 0.4 percent of Si, 0.20 to 0.50 percent of MgO, 0.10 to 0.20 percent of Al2O3, 0.10 to 0.20 percent of CaCO3, 0.21 to 0.41 percent of CaF2, 0.6 to 1.4 percent of Cr, 0.8 to 2.0 percent of Mo, 3 to 6 percent of Ni, 0.05 to 0.10 percent of V, 0.01 to 0.02 percent of Re, 0.15 to 0.35 percent of Mg, 0.15 to 0.35 percent of Al, and the balance of Fe. The flux-cored wire provided by the invention has the advantages of high intensity, toughness and crack resistance.

Description

technical field [0001] The invention relates to a flux-cored welding wire and its preparation and application. Background technique [0002] Flux-cored wire is a high-efficiency welding material developed in the 1950s. It not only inherits the advantages of adjustable electrode components, but also overcomes the shortcomings of non-continuous and automatic welding of electrodes. Its deposition efficiency is as high as 4 times that of electrodes. It has the advantages of beautiful weld shape and small welding deformation. [0003] With the advancement of science and technology, and the popularization and application of new processes, new materials, and new technologies, flux-cored welding wire, a new type of high-efficiency welding material, has been accepted by people for its high efficiency and excellent welding quality. Widely used in steel structure, shipbuilding and other industries. High-strength steel has the advantages of reducing weight, reducing plate thickness, a...

Claims

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Application Information

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IPC IPC(8): B23K35/362B23K35/40
Inventor 韩海峰刘玉双吕奎清杜晓琪田海成李磊
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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