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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
  • Description
  • Claims
  • Application Information

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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 fully meet the needs of low-temperature welding, so as to overcome the current high production cost of low-temperature welding materials

Method used

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

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Embodiment 1

[0036] The flux-cored welding wire of the present embodiment, the composition of medicinal powder and the percentage content that accounts for described flux-cored welding wire gross mass 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 alloy 0.65, Re 0.016, filling rate 14.5%. Mild steel is used for the carbon steel skin.

[0037] 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 13-18%, and reduce the diameter after forming Finally, a finished welding wire with a diameter of 1.0-1.6mm is obtained.

[0038] Application of the flux-cored wire in this embodiment: the flux-cored wire of the present invention adopts CO 2 Gas protection, under the conditions of room temperature 25°C and relativ...

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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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