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A kind of self-shielded surfacing flux-cored welding wire and preparation method thereof

A technology of self-shielding and welding wire, applied in welding equipment, manufacturing tools, welding media, etc., can solve the problem of low strength of self-shielding flux-cored wire, reduce the generation of pores and cracks, improve uniformity and fluidity, and better The effect of molding effect

Active Publication Date: 2022-08-05
江苏东南焊材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of low strength of self-shielding flux-cored welding wire in the prior art, this application provides a kind of self-shielding surfacing welding flux-cored welding wire and its preparation method

Method used

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  • A kind of self-shielded surfacing flux-cored welding wire and preparation method thereof

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Effect test

Embodiment 1

[0065] A preparation method of self-shielded surfacing flux-cored welding wire, comprising the following steps:

[0066] a. Mixing powder: mix the specified amount of 3kg chromium carbide, 2kg ferromanganese, 0.8kg tantalum, 0.8kg tungsten carbide, 0.2kg calcium hexaboride, 0.62kg graphite, 0.1kg cerium oxide, 1.26kg rare earth magnesium ferrosilicon alloy, 0.4kg fluorspar, 0.5kg silica, 0.1kgLi 2 CO 3 , 0.22kg marble for mixing;

[0067] b. Filling: Roll the cold-rolled steel strip into a U-shaped section, and then fill the 10kg powder mixed in step a into the U-shaped metal groove according to the filling rate of 30%, and then seal and roll;

[0068] c. Drawing and forming: the tubular welding wire sealed in step b is drawn, and the filling rate is detected after drawing and forming, which is obtained from the protective surfacing flux-cored welding wire.

Embodiment 2

[0070] A preparation method of self-shielded surfacing flux-cored welding wire, comprising the following steps:

[0071] a. Mixing powder: mix the specified amount of 4kg chromium carbide, 1.5kg ferromanganese, 0.75kg ferrotantalum, 0.3kg tungsten carbide, 0.1kg calcium hexaboride, 0.65kg graphite, 0.05kg cerium oxide, 1.3kg rare earth magnesium ferrosilicon alloy , 0.3kg fluorspar, 0.6kg silica, 0.2kgLi 2 CO 3 , 0.25kg marble for mixing;

[0072] b. Filling: Roll the cold-rolled steel strip into a U-shaped section, and then fill the 10kg powder mixed in step a into the U-shaped metal groove according to the filling rate of 45%, and then seal and roll;

[0073] c. Drawing and forming: the tubular welding wire sealed in step b is drawn, and the filling rate is detected after drawing and forming, which is obtained from the protective surfacing flux-cored welding wire.

Embodiment 3

[0075] A preparation method of self-shielded surfacing flux-cored welding wire, comprising the following steps:

[0076] a. Mixing powder: mix the specified amount of 3.1kg chromium carbide, 1.6kg ferromanganese, 0.76kg ferrotantalum, 0.36kg tungsten carbide, 0.5kg calcium hexaboride, 0.8kg graphite, 0.06kg cerium oxide, 1.5kg rare earth magnesium silicon Ferroalloy, 0.5kg fluorspar, 0.4kg silica, 0.12kg Li 2 CO 3 , 0.3kg marble for mixing;

[0077] b. Filling: roll the cold-rolled steel strip into a U-shaped section, and then fill the 10kg powder mixed in step a into the U-shaped metal groove according to the filling rate of 35%, and then seal and roll;

[0078] c. Drawing and forming: the tubular welding wire sealed in step b is drawn, and the filling rate is detected after drawing and forming, which is obtained from the protective surfacing flux-cored welding wire.

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Abstract

The application discloses a self-shielded surfacing flux-cored welding wire and a preparation method, which belong to the field of welding materials. The flux-cored welding wire includes a wire skin material and a flux, the flux is filled in the welding wire skin material, and the flux includes the following components by weight: 30-40% of chromium carbide, 15-25% of ferromanganese, and 7.5-9.5% of ferrotantalum %, tungsten carbide 3‑8%, calcium hexaboride 1‑5%, graphite 6‑8%, cerium oxide 0.5‑1%, rare earth magnesium ferrosilicon alloy 10‑15%, fluorspar 3‑5%, silica 4‑ 7%, Li 2 CO 3 1-2%, marble 2-3%; the filling rate of the flux in the welding wire skin material is 30-45%. In this application, by selecting each component in the flux and optimizing the addition amount of each component, the hardness and wear resistance of the surfacing metal can be significantly improved, so that the service life of the repair material can be prolonged, and the mechanical properties of the surfacing metal in special fields can be satisfied. Require.

Description

technical field [0001] The application relates to the field of welding materials, in particular to a self-shielded surfacing flux-cored welding wire and a preparation method. Background technique [0002] Wear, corrosion and fracture are the three main forms of material and energy consumption. Among them, in the application field of metal materials, wear as the main failure mode cannot be ignored, and the consumption of materials and energy caused by it is very huge. Wear failure will not only cause a huge waste of resources, but also may directly or indirectly lead to catastrophic accidents. The wear failure mode of many components in mechanical equipment in the industrial field is metal-to-metal wear, which will lead to a reduction in the service life of mechanical components. At present, remanufacturing methods are used to reduce the consumption of spare parts. The simplest and most effective method for remanufacturing is welding repair, that is, according to the differ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362B23K35/40
CPCB23K35/362B23K35/40B23K35/406
Inventor 潘秋俊潘伟
Owner 江苏东南焊材有限公司
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