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500MPa flux-cored wire and preparation method thereof

A technology of flux-cored welding wire and powder, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of increasing labor intensity of workers and affecting welding efficiency, and achieve the effects of improving welding efficiency, reducing smoke and dust, and improving forming quality

Inactive Publication Date: 2020-11-27
SHANDONG ENERGY HEAVY EQUIPMENT GROUP HENGTU TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional 500MPa titanium oxide, titanium calcium type and calcium oxide type flux-cored welding wires contain more slag-forming components in the powder. If multi-layer and multi-pass welding is carried out, it is necessary to carry out slag removal after each welding seam. Greatly increased the labor intensity of workers and affected the welding efficiency

Method used

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  • 500MPa flux-cored wire and preparation method thereof
  • 500MPa flux-cored wire and preparation method thereof
  • 500MPa flux-cored wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A 500MPa-grade flux-cored welding wire, consisting of a low-carbon steel strip and powder, the powder is wrapped in the low-carbon steel strip, and the powder is composed of the following components in parts by mass: 2 parts of arc stabilizing agent, 4 parts of catalyst , 10 parts of silicomanganese alloy, 6 parts of ferrosilicon, 12 parts of electrolytic manganese, 66 parts of reduced iron powder, and the powder filling rate is 14%.

Embodiment 2

[0030] A 500MPa-grade flux-cored welding wire, consisting of a low-carbon steel strip and powder, the powder is wrapped in the low-carbon steel strip, and the powder is composed of the following components in parts by mass: 4 parts of arc stabilizing agent, 3 parts of catalyst , 6.5 parts of silicomanganese alloy, 15 parts of ferrosilicon, 15 parts of electrolytic manganese, 56.5 parts of reduced iron powder, and the powder filling rate is 14.5%.

Embodiment 3

[0032] A 500MPa-grade flux-cored welding wire, consisting of a low-carbon steel strip and powder, the powder is wrapped in the low-carbon steel strip, and the powder is composed of the following components in parts by mass: 6 parts of arc stabilizing agent, 2 parts of catalyst , 8 parts of silicomanganese alloy, 12 parts of ferrosilicon, 10 parts of electrolytic manganese, 62 parts of reduced iron powder, and the powder filling rate is 15%.

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Abstract

The invention discloses a 500MPa flux-cored wire and a preparation method thereof. The 500MPa flux-cored wire is prepared from a low-carbon steel strip and flux powder. The flux powder is wrapped in the low-carbon steel strip. The flux powder comprises, by mass, 2-8 parts of arc stabilizer, 1-5 parts of catalyst, 5-15 parts of silicon-manganese alloy, 5-10 parts of ferrosilicon, 5-15 parts of electrolytic manganese and 55-75 parts of reduced iron powder. The 500MPa flux-cored wire is low in manufacturing cost. The welded surface has no molten slag. Slag removal is not needed during multilayerand multi-pass welding. The welding efficiency is greatly improved. The 500MPa flux-cored wire is environment-friendly in the welding process, small in welding spatter, small in smoke dust, high in cladding efficiency and capable of being popularized to robot welding and has wide development prospects.

Description

technical field [0001] The invention belongs to the field of metal welding materials, and in particular relates to a 500MPa class flux-cored welding wire and a preparation method thereof. Background technique [0002] At present, the production technology and formula of flux-cored welding wire in China are relatively mature. The current flux-cored welding wire will produce slag skin during use, and the cladding effect can achieve certain welding performance and weld beauty. The traditional 500MPa titanium oxide, titanium calcium type and calcium oxide type flux-cored welding wires contain more slag-forming components in the powder. If multi-layer and multi-pass welding is carried out, it is necessary to carry out slag removal after each welding seam. Greatly increased the labor intensity of workers, affecting the welding efficiency. [0003] Therefore, prior art still needs further development and improvement. Contents of the invention [0004] Aiming at various deficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/362B23K35/40
CPCB23K35/3053B23K35/362B23K35/406
Inventor 曹成铭王书存乔飞王亚军刘凯高婷婷
Owner SHANDONG ENERGY HEAVY EQUIPMENT GROUP HENGTU TECH CO LTD
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