No-nickel flux-cored wire and preparation method and application thereof

A technology of flux-cored welding wire and powder, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problem of high production cost, and achieve the effect of high toughness and crack resistance and good crack resistance.

Active Publication Date: 2015-08-12
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of nickel-free flux-cored welding wire with high toughness and fu

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  • No-nickel flux-cored wire and preparation method and application thereof

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Example Embodiment

[0035] Example 1:

[0036] In the flux-cored welding wire of this embodiment, the composition of the powder and its percentage content in the total mass of the flux-cored wire are as follows: TiO 2 5.5%, SiO 2 0.8%, ZrO 2 1.2%, Mn 2.0%, Si 0.6%, MgO 0.42%, CaCO 3 0.15%, CaF 2 0.12%, NaF 0.16%, Fe2.884%, magnesium aluminum alloy 0.65, Re 0.016, filling rate 14.5%. Low carbon steel is used for the outer skin of carbon steel.

[0037] The preparation method of the flux-cored welding wire in this embodiment: the steel strip method is used to produce the flux-cored welding wire, the O-shaped butt joint, the powder is filled in the outer skin made of low-carbon steel strip, the filling rate is 13-18%, and the diameter is reduced after forming Afterwards, a finished welding wire with a diameter of 1.0 to 1.6 mm is obtained.

[0038] Application of the flux-cored wire in this embodiment: the flux-cored wire of the present invention uses CO 2 With gas protection, under the conditions of room...

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Abstract

The invention discloses a no-nickel flux-cored wire and a preparation method and application thereof. The no-nickel flux-cored wire consists of a carbon steel cover and medicine powder filled in the cover; the filling rate is 13.0-18.0%; the medicine powder comprises the following components in percentage by mass: 5.0-8.0% of TiO2, 0.6-1.5% of SiO2, 0.5-1.5% of ZrO2, 1.5-3.0% of Mn, 0.4-1.2% of Si, 0.20-0.60% of MgO, 0.10-0.50% of CaCO3, 0.10-0.20% of CaF2, 0.10-0.30% of NaF, 0.010-0.020% of Re, 0.40-0.70% of magnesium aluminum alloys, and the balance of Fe. The flux-cored wire has high toughness and excellent crack resistance, can be welded in all positions, and is specifically suitable for steel plates with yield strength equal to or higher than 390 MPa.

Description

technical field [0001] The invention relates to the technical field of low-temperature welding, in particular to a high-toughness nickel-free flux-cored welding wire and a preparation method and application thereof. Background technique [0002] Flux-cored welding 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] E501T-1 flux-cored welding wire is carbon dioxide gas-shielded flux-cored welding wire, which has good low-temperature impact toughness at -20°C. This welding wire is currently most widely used in shipbuilding, machinery manufacturing, pressure vessels, boilers, petroleum machinery, and chemical industry. Welding of important structures ...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/0266B23K35/3053B23K35/3602B23K35/406
Inventor 韩海峰李磊刘玉双田海成张亚平
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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