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A self-shielding flux-cored welding wire added with multi-granularity flux-core components and its preparation method

A technology of flux-cored welding wire and self-protection, which is applied in the direction of welding equipment, metal processing equipment, welding medium, etc., to achieve the effect of high alloy homogeneity, good welding process performance, and good weld bead formation

Active Publication Date: 2018-07-03
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 disclosure on improving the self-protection effect of welding wire by controlling the particle size of components

Method used

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  • A self-shielding flux-cored welding wire added with multi-granularity flux-core components and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0027] A self-shielding flux-cored welding wire with multi-grain flux core components, including low-carbon steel strip and flux core, the flux core is filled in the steel strip, and the flux core components are prepared according to the following quality: including low-carbon steel strip and flux core, The drug core is filled in the steel strip, and the drug core components are prepared according to the following quality: 60g of 100-mesh high-carbon ferrochrome, 2g of 60-mesh graphite, 1g of 100-mesh graphite, 1.5g of 200-mesh graphite, 1g of 60-mesh boron Iron, 1g of 100-mesh ferroboron, 0.5g of 200-mesh ferroboron, 1.5g of 60-mesh cellulose powder, 1g of 100-mesh cellulose powder, 1g of 200-mesh cellulose powder, 1.5g of 60-mesh aluminum-magnesium alloy , 2g of 100-mesh aluminum-magnesium alloy, 1g of 200-mesh aluminum-magnesium alloy, 1g of 60-mesh silicon-manganese alloy, 3g of 100-mesh silicon-manganese alloy, 1g of 200-mesh silicon-manganese alloy, and 20g of 100-mesh ir...

Embodiment 2

[0029] A self-shielding flux-cored welding wire with multi-grain flux core components, including low-carbon steel strip and flux core, the flux core is filled in the steel strip, and the flux core components are prepared according to the following quality: including low-carbon steel strip and flux core, The drug core is filled in the steel strip, and the drug core components are prepared according to the following quality: 65g of 100-mesh high-carbon ferrochrome, 1.5g of 60-mesh graphite, 2g of 100-mesh graphite, 2.5g of 200-mesh graphite, 0.6g of 60-mesh graphite Mesh iron boron, 1.4g 100 mesh iron boron, 1g 200 mesh iron boron, 1g 60 mesh cellulose powder, 2.5g 100 mesh cellulose powder, 0.5g 200 mesh cellulose powder, 1g 60 mesh aluminum Magnesium alloy, 1g of 100-mesh aluminum-magnesium alloy, 1.5g of 200-mesh aluminum-magnesium alloy, 2g of 60-mesh silicon-manganese alloy, 4g of 100-mesh silicon-manganese alloy, 1.5g of 200-mesh silicon-manganese alloy, and the balance is ...

Embodiment 3

[0031]A self-shielding flux-cored welding wire with multi-grain flux core components, including low-carbon steel strip and flux core, the flux core is filled in the steel strip, and the flux core components are prepared according to the following quality: including low-carbon steel strip and flux core, The drug core is filled in the steel strip, and the drug core components are prepared according to the following quality: 70g of 100-mesh high-carbon ferrochrome, 1g of 60-mesh graphite, 1g of 100-mesh graphite, 1g of 200-mesh graphite, 0.5g of 60-mesh boron Iron, 1.5g of 100-mesh ferroboron, 0.5g of 200-mesh ferroboron, 1g of 60-mesh cellulose powder, 2g of 100-mesh cellulose powder, 0.8g of 200-mesh cellulose powder, 2g of 60-mesh aluminum-magnesium alloy , 1.5g of 100-mesh aluminum-magnesium alloy, 1g of 200-mesh aluminum-magnesium alloy, 3g of 60-mesh silicon-manganese alloy, 2g of 100-mesh silicon-manganese alloy, 2g of 200-mesh silicon-manganese alloy, and the balance of 9....

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Abstract

The invention discloses a self-protection flux-cored wire added with multi-granularity flux-cored components and a preparation method thereof. Using a low-carbon steel strip as a cover, a flux core comprises the following components: 60-75 wt% of high carbon ferrochrome, graphite, ferroboron, cellulose powder, aluminum-magnesium alloy, silicon-manganese alloy and the balance of iron powder, wherein the graphite, the ferroboron, the cellulose powder, the aluminum-magnesium alloy and the silicon-manganese alloy respectively consist of three particles of 60 meshes, 100 meshes and 200 meshes. The wire is gradually deoxidized in whole welding of wire melting, molten drop transition and melting pool phases, is excellent in welding process performance, and is beautiful in overlaying molding, high in hardness and excellent 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 self-protecting flux-cored welding wire added with multi-granularity flux-core components and a preparation method thereof. Background technique [0002] Since the self-shielding flux-cored wire has the advantages of easy operation, no need to add shielding gas, and high deposition efficiency, it has unique advantages in the field repair of large wear-resistant parts and has a wide application prospect. However, the self-shielding flux-cored wire can only rely on the flux core components to achieve functions such as deoxidation, nitrogen fixation, and gas generation during the welding process, so as to protect the molten metal. In the actual welding process, there are both the extremely high temperature droplet stage and the slightly lower temperature molten pool stage, no matter which stage needs to effectively avoid air pollution to obtain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/24B23K35/40B23K35/12
CPCB23K35/0266B23K35/24B23K35/40
Inventor 刘大双魏萍
Owner JIANGSU UNIV OF SCI & TECH