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Flux-cored welding wire for enhancing continuous self-protection effect of welding zone and preparation method thereof

A technology of flux-cored welding wire and self-protection, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problems that have not yet been seen, enhance the continuous self-protection effect of welding partition, and achieve uniform surface hardness and preparation method. Simple and repeatable effect with little splash

Active Publication Date: 2018-05-22
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no technical report on enhancing the continuous self-protection effect of the welding zone by controlling the particle size of the components

Method used

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  • Flux-cored welding wire for enhancing continuous self-protection effect of welding zone and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A flux-cored welding wire that enhances the continuous self-protection effect of the welding zone, including a low-carbon steel strip and a flux core, the flux core is filled in the steel strip, and the composition of the flux core is prepared according to the following quality: including the low-carbon steel strip and the flux core, and the flux core The core is filled in the steel strip, and the composition of the drug core is prepared according to the following quality: 85g of 100 mesh high carbon ferrochromium, 1g of 100 mesh ferroboron, 8.5g of deoxidizer, 1g of arc stabilizer, 4.5g of 100 mesh iron pink. Among them, the deoxidizer is a mechanical mixture composed of silicon-manganese alloys of different particle sizes, graphite, aluminum powder and magnesium powder, specifically: 3g of 230-mesh silicon-manganese alloy, 3g of 50-mesh graphite, 2g of 50-mesh aluminum powder, 0.5 g of 50-mesh magnesium powder, the arc stabilizer is a mechanical mixture composed of po...

Embodiment 2

[0032] A flux-cored welding wire that enhances the continuous self-protection effect of the welding zone, including a low-carbon steel strip and a flux core, the flux core is filled in the steel strip, and the composition of the flux core is prepared according to the following quality: including the low-carbon steel strip and the flux core, and the flux core The core is filled in the steel strip, and the drug core components are prepared according to the following quality: 80g of 100 mesh high carbon ferrochrome, 2g of 100 mesh ferroboron, 13g of deoxidizer, 3g of arc stabilizer, and 2g of 100 mesh iron powder. Among them, the deoxidizer is a mechanical mixture composed of silicon-manganese alloys of different particle sizes, graphite, aluminum powder and magnesium powder, specifically: 4g of 230-mesh silicon-manganese alloy, 4g of 50-mesh graphite, 4g of 50-mesh aluminum powder, 1g The 50-mesh magnesium powder, the arc stabilizer is a mechanical mixture composed of potassium s...

Embodiment 3

[0034]A flux-cored welding wire that enhances the continuous self-protection effect of the welding zone, including a low-carbon steel strip and a flux core, the flux core is filled in the steel strip, and the composition of the flux core is prepared according to the following quality: including the low-carbon steel strip and the flux core, and the flux core The core is filled in the steel strip, and the composition of the drug core is prepared according to the following quality: 75g of 100 mesh high carbon ferrochrome, 3g of 100 mesh ferroboron, 14.5g of deoxidizer, 4g of arc stabilizer, 3.5g of 100 mesh iron pink. Among them, the deoxidizer is a mechanical mixture composed of silicon-manganese alloys of different particle sizes, graphite, aluminum powder and magnesium powder, specifically: 5g of 230-mesh silicon-manganese alloy, 5g of 50-mesh graphite, 3g of 50-mesh aluminum powder, 1.5 g of 50-mesh magnesium powder, and the arc stabilizer is a mechanical mixture composed of ...

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Abstract

The invention discloses a flux-cored wire capable of enhancing the welding partition continuous self-protection effect and a preparation method thereof. A low-carbon steel strip serves as a skin. A flux core is prepared from 70-85wt% of high-carbon ferrochrome, 1-3.5wt% of ferroboron, 8.5-18.5wt% of a deoxidizing agent, 1-5wt% of an arc stabilizing agent and the balance ferrous powder. By the total weight of the flux core, the deoxidizing agent is prepared from 3-6wt% of 230-mesh silicomanganese alloy, 3-6wt% of 50-mesh graphite, 2-4.5wt% of 50-mesh aluminum powder and 0.5-2wt% of 50-mesh magnesium powder. The arc stabilizing agent is a mechanical mixture formed by sodium potassium silicate and sodium carbonate, and the flux core accounts for 54-59wt% of the mass of the wire. The wire can effectively enhance the self-protection effect of various partitions (at the melting stage, the globular transfer stage and the molten pool stage) of the wire, an arc is stable, the manufacturability is good, and a surfacing layer is attractive in shape, high in hardness and good in wear resistance.

Description

technical field [0001] The invention belongs to the field of welding in material processing engineering, and in particular relates to a flux-cored welding wire which enhances the continuous self-protection effect of welding zones and a preparation method thereof. Background technique [0002] Self-shielded flux-cored wire is widely used in the field of wear-resistant surfacing welding due to its advantages of easy operation, no need for additional shielding gas, and high deposition efficiency. According to the theory of welding metallurgy, the whole welding process is carried out in "partition and continuous", the reaction is not limited to one molten pool, and the reaction has a staged characteristic. For traditional electrodes, it can generally be divided into three areas: coating reaction area, droplet reaction area and molten pool reaction area. By analogy, it can be considered that the welding metallurgical process of welding wire can generally be divided into three ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/368B23K35/40
CPCB23K35/0266B23K35/3086B23K35/368B23K35/406
Inventor 刘大双魏萍
Owner JIANGSU UNIV OF SCI & TECH
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