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Self-protection surfacing flux-cored wire and preparation method

A technology of self-protection and welding wire, which is applied in welding equipment, manufacturing tools, welding media, etc., can solve the problems of low strength of self-protection flux-cored welding wire, and achieve the effects of reducing the generation of pores and cracks, good forming effect and improving quality

Active Publication Date: 2021-06-01
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

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  • Self-protection surfacing flux-cored wire and preparation method

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Embodiment 1

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

[0066] a. Mixing powder: 3kg chromium carbide, 2kg ferromanganese, 0.8kg tantalum iron, 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 of marble for mixing;

[0067] b. Filling: Roll the cold-rolled steel strip into a U-shaped section, then fill 10kg of 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: drawing the tubular welding wire sealed in step b, and testing the filling rate after drawing and forming, that is, the flux-cored welding wire obtained from the shielded surfacing.

Embodiment 2

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

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

[0072] b. Filling: Roll the cold-rolled steel strip into a U-shaped section, then fill 10kg of 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: drawing the tubular welding wire sealed in step b, and testing the filling rate after drawing and forming, that is, the flux-cored welding wire obtained from the shielded surfacing.

Embodiment 3

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

[0076] a. Powder mixing: 3.1kg chromium carbide, 1.6kg ferromanganese, 0.76kg tantalum iron, 0.36kg tungsten carbide, 0.5kg calcium hexaboride, 0.8kg graphite, 0.06kg cerium oxide, 1.5kg rare earth magnesium silicon Iron alloy, 0.5kg fluorspar, 0.4kg silica, 0.12kgLi 2 CO 3 , 0.3kg of marble for mixing;

[0077] b. Filling: Roll the cold-rolled steel strip into a U-shaped section, then fill 10kg of 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: drawing the tubular welding wire sealed in step b, and testing the filling rate after drawing and forming, that is, the flux-cored welding wire obtained from the shielded surfacing.

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Abstract

The invention discloses a self-protection surfacing flux-cored wire and a preparation method, and belongs to the field of welding materials. The flux-cored wire comprises a welding wire skin material and welding flux, the welding wire skin material is filled with the welding flux, the welding flux comprises, by weight, 30%-40% of chromium carbide, 15%-25% of ferromanganese, 7.5%-9.5% of ferrotantalum, 3%-8% of tungsten carbide, 1%-5% of calcium hexaboride, 6%-8% of graphite, 0.5%-1% of cerium oxide, 10%-15% of rare earth magnesium-silicon-iron alloy, 3%-5% of fluorite, 4%-7% of silica, 1%-2% of Li2CO3 and 2%-3% of marble, and the filling rate of the welding flux in the welding wire skin material is 30%-45%. According to the flux-cored wire, the hardness and wear resistance of the surfacing metal can be remarkably improved by selecting all the components in the welding flux and optimizing the adding amount of all the components, so that the service life of a repairing material can be prolonged, and the requirements of special fields for the mechanical property of the surfacing metal are met.

Description

technical field [0001] The present application relates to the field of welding materials, in particular to a flux-cored welding wire for self-shielding surfacing welding and a preparation method thereof. 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 material and energy consumption caused by it are 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 parts in mechanical equipment in the industrial field is metal-to-metal wear, which will lead to a reduction in the service life of mechanical parts. At present, remanufacturing methods are used to reduce the consumption of spare parts. The simplest and most effective method of remanufacturing is welding repair, that is, accordin...

Claims

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Application Information

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Patent Type & Authority Applications(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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