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Sintered flux for submerged arc welding of u-shaped ribs in steel structures

A technology for sintering flux and steel structural plates, which is applied in arc welding equipment, welding medium, welding equipment, etc., can solve problems such as unstable welding specifications, failure to meet design penetration requirements, and large assembly gap errors. Good slag property, excellent working performance, stable arc effect

Active Publication Date: 2018-06-05
武汉天高熔接股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the design requirement of U-shaped rib fillet welds on most steel structures at home and abroad is that the penetration depth is not less than 80% of the plate thickness. However, to meet this requirement, strict requirements must be imposed on the assembly process and welding process in the production process. , the existing welded steel structure U-shaped rib fillet weld full-penetration welding material is very easy to cause the workpiece to weld through or fail to reach the design penetration due to factors such as large assembly gap errors and unstable welding specification fluctuations during the welding process Require

Method used

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  • Sintered flux for submerged arc welding of u-shaped ribs in steel structures
  • Sintered flux for submerged arc welding of u-shaped ribs in steel structures
  • Sintered flux for submerged arc welding of u-shaped ribs in steel structures

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A sintered flux, comprising the following components by mass percentage:

[0039] MgO: 20%; CaO: 3%; CaF 2 : 22%; MnO: 5%; Al 2 o 3 : 32%; TiO 2 : 3%; SiO 2 : 12%; and SiFe: 3%.

Embodiment 2

[0041] A sintered flux, comprising the following components by mass percentage:

[0042] MgO: 20%; CaO: 6%; CaF 2 : 22%; MnO: 5%; Al 2 o 3 : 27%; TiO 2 : 5%; SiO 2 : 12%; and SiFe: 3%.

Embodiment 3

[0044] MgO: 18%; CaO: 5%; CaF 2 : 20%; MnO: 2%; Al 2 o 3 : 28%; TiO 2 : 7%; SiO 2 : 18%; and SiFe: 2%.

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Abstract

The invention discloses sintered flux for submerged-arc welding of a steel structure U-shaped rib plate. The sintered flux comprises, by mass percent, 15%-25% of MgO, 3%-8% of CaO, 15%-25% of CaF2, 2%-5% of MnO, 25%-35% of Al2O3, 10%-20% of SiO2, 3%-7% of TiO2 and 1%-3% of SiFe. According to the sintered flux, the welding speed can be increased, the stable fusion depth can be provided in the high-speed welding state, and welding forming is attractive.

Description

technical field [0001] The invention relates to the technical field of bridge welding. More specifically, the present invention relates to a sintered flux for submerged arc welding of U-shaped ribs in steel structures. Background technique [0002] At present, the design requirement of U-shaped rib fillet welds on most steel structures at home and abroad is that the penetration depth is not less than 80% of the plate thickness. However, to meet this requirement, strict requirements must be imposed on the assembly process and welding process in the production process. , the existing welded steel structure U-shaped rib fillet weld full-penetration welding material is very easy to cause the workpiece to weld through or fail to reach the design penetration due to factors such as large assembly gap errors and unstable welding specification fluctuations during the welding process Require. Therefore, it is of great significance to seek a full-penetration welding material for U-sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362B23K9/18
CPCB23K9/18B23K35/3601B23K35/362
Inventor 屠涛雄胡文喜李华汪小根
Owner 武汉天高熔接股份有限公司
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