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Oversized-linear-energy-resistant sintered flux for submerged-arc welding and manufacturing method thereof

A technology of sintered flux and submerged arc welding, applied in welding equipment, welding medium, manufacturing tools, etc., can solve problems such as difficulty in ensuring welding quality, achieve the effect of improving welding efficiency and enhancing the ability to withstand large currents

Active Publication Date: 2013-08-21
郑州固力特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the traditional sintered flux is difficult to guarantee the welding quality in submerged arc welding with large heat input, the present invention provides a sintered flux for submerged arc welding resistant to super large heat input and its preparation method, which can effectively avoid the use of conventional flux in welding When the current is as high as 1000-1400A, the slag formed by welding cannot cover the weld metal well, and can form a uniform and smooth weld bead

Method used

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  • Oversized-linear-energy-resistant sintered flux for submerged-arc welding and manufacturing method thereof
  • Oversized-linear-energy-resistant sintered flux for submerged-arc welding and manufacturing method thereof
  • Oversized-linear-energy-resistant sintered flux for submerged-arc welding and manufacturing method thereof

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Effect test

Embodiment 1

[0031] Using the method of the present invention, 10 kg of sintered flux was prepared in this example. The components of the flux and the mass percentages of each component are: alumina (industrial grade α-type alumina calcined at 1450°C, particle size: 80-100 mesh) 18%, magnesia (fused magnesia with a content of 92%, sulfur and phosphorus ≤ 0.04%, particle size: 80-90 mesh) 22%, natural wollastonite (SiO 2 : 42%, CaO: 47%, sulfur, phosphorus ≤ 0.04%, particle size: 80-90 mesh) 5%, fluorite (CaF 2 : 96%, sulfur, phosphorus ≤ 0.03%, particle size: 80-90 mesh) 11%, silicon micropowder (SiO 2 : 98%, sulfur, phosphorus ≤ 0.03%, particle size: 200-230 mesh) 6%, zircon sand (ZrO 2 : 60%, SiO 2 : 32%, S≤0.03%, P≤0.09%, particle size: 60-100 mesh) 2%, reduced iron powder (Fe: 98%, S≤0.02%, P≤0.02%, hydrogen loss ≤0.5%, particle size : 100-120 mesh) 30%, ferromanganese alloy (Mn: 75%, P≤0.33%, S≤0.03%, particle size: 80-100 mesh) 2.5%, ferrosilicon alloy (Si: 42%, P≤0.04%, S≤0.02%,...

Embodiment 2

[0047] Using the method of the present invention, 10 kg of sintered flux was obtained in this example. The components of the flux and the mass percentages of each component are: alumina (industrial grade α-type alumina calcined at 1500°C, particle size: 100-200 mesh) 18%, magnesia (fused magnesia with a content of 95%, sulfur and phosphorus ≤ 0.04%, particle size: 90-100 mesh) 22%, natural wollastonite (SiO 2 : 45%, CaO: 50%, sulfur, phosphorus ≤ 0.04%, particle size: 90-100 mesh) 5%, fluorite (CaF 2 : 98%, sulfur, phosphorus ≤ 0.03%, particle size: 90-100 mesh) 11%, silicon micropowder (SiO 2 : 99%, sulfur, phosphorus ≤ 0.03%, particle size: 240-250 mesh) 6%, zircon sand (ZrO 2 : 70%, SiO 2 ≤25%, S≤0.03%, P≤0.09%, particle size: 110-120 mesh) 2%, reduced iron powder (Fe: 99%, S≤0.02%, P≤0.02%, hydrogen loss ≤0.5%, particle size : 130-150 mesh) 30%, ferromanganese alloy (Mn: 85%, P≤0.33, S≤0.03%, particle size: 110-120 mesh) 2.5%, ferrosilicon alloy (Si: 47%, P≤0.04%, S ...

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Abstract

The invention discloses an oversized-linear-energy-resistant sintered flux for submerged-arc welding and a manufacturing method of the oversized-linear-energy-resistant sintered flux and belongs to the field of welding materials for submerged-arc automatic welding. The oversized-linear-energy-resistant sintered flux comprises, by mass, 18 percent of alumina, 22 percent of magnesia, 5 percent of natural aedelforsite, 11 percent of fluorite, 6 percent of silica powder, 2 percent of zircon sand, 30 percent of reduced iron powder, 2.5 percent of manganeisen and 3.5 percent of ferrosilicon. The oversized-linear-energy-resistant sintered flux for submerged-arc welding and the manufacturing method of the oversized-linear-energy-resistant sintered flux can effectively avoid the phenomenon that slag formed in welding with a welding current reaching up to 1000A to1400A with a conventional flux can not well cover weld metal, and an even welding bead with a bright and clean surface can be formed.

Description

technical field [0001] The invention belongs to the field of welding materials for submerged arc automatic welding, and more specifically relates to a sintered flux for submerged arc welding with resistance to super large heat input and a preparation method thereof. Background technique [0002] The submerged arc automatic welding method is widely used in the manufacture of large steel structures. In order to further improve the welding production efficiency, welding workers have adopted technical solutions such as increasing the welding current to 1000-1400A and welding multiple welding wires at the same time, so that the welding efficiency has been greatly improved. improvement. These approaches to improve welding efficiency are all based on trying to increase the welding line energy to improve deposition efficiency. For example, shipyards use a large number of welding wires or 3 welding wires for welding at the same time, and the welding current is as high as 1200A or mo...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/40
Inventor 李晓泉
Owner 郑州固力特新材料有限公司
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