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Neutral sintered flux for submerged arc welding and preparation method thereof

A technology of sintered flux and submerged arc welding, which is applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of inability to take into account welding processability and weld performance, etc., and achieve excellent comprehensive performance of flux and good resistance to cold crack sensitivity and porosity resistance, the effect of easy availability of raw materials

Inactive Publication Date: 2018-02-13
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a neutral sintered flux for submerged arc welding, so as to solve the problem that the existing flux cannot take into account the welding process and weld performance

Method used

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  • Neutral sintered flux for submerged arc welding and preparation method thereof
  • Neutral sintered flux for submerged arc welding and preparation method thereof
  • Neutral sintered flux for submerged arc welding and preparation method thereof

Examples

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Embodiment 1

[0023] The neutral sintering flux for submerged arc welding of the present embodiment is made of binder and mineral dry powder raw materials, and the weight percentage of mineral dry powder raw materials is composed of: 20% fused magnesia, 10% fluorite, 20% corundum, manganese ore 14%, 5% marble, 18% quartz, 10% rutile, 1% ferrosilicon, 2% ferromanganese; the binder is sodium silicate, and the dosage is 20% of the total weight of dry mineral powder raw materials.

[0024] The preparation method of the neutral sintered flux for submerged arc welding in this embodiment adopts the following steps: after mixing the raw material powder according to the proportion, adding a binder for preparation, then sintering at 600°C for 2 hours, pulverizing, and passing through a 10-40 mesh sieve , that is.

Embodiment 2

[0026] The neutral sintered flux for submerged arc welding of the present embodiment is made of binder and mineral dry powder raw material, and the weight percent of mineral dry powder raw material is composed of: fused magnesia 25%, fluorite 15%, corundum 25%, manganese ore 5%, 13% marble, 10% quartz, 3% rutile, 2% ferrosilicon, 2% ferromanganese; the binder is sodium silicate, and the dosage is 25% of the total weight of the dry mineral powder raw materials.

[0027] The preparation method of the neutral sintered flux for submerged arc welding in this embodiment adopts the following steps: after mixing the raw material powder according to the proportion, adding a binder for preparation, then sintering at 650°C for 2 hours, pulverizing, and passing through a 10-40 mesh sieve , that is.

Embodiment 3

[0029] The neutral sintering flux for submerged arc welding of the present embodiment is made of binder and mineral dry powder raw materials, and the weight percent of mineral dry powder raw materials is composed of: 25% of fused magnesia, 13% of fluorite, 30% of corundum, manganese ore 7%, 10% marble, 10% quartz, 3% rutile, 1% ferrosilicon, 1% ferromanganese; the binder is sodium silicate, and the dosage is 30% of the total weight of the mineral dry powder raw materials.

[0030] The preparation method of the neutral sintered flux for submerged arc welding in this embodiment adopts the following steps: after mixing the raw material powder according to the proportion, adding a binder for preparation, then sintering at 680°C for 2 hours, crushing, and passing through a 10-40 mesh sieve , that is.

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Abstract

The invention relates to a neutral sintered flux for submerged arc welding and a preparation method thereof. The neutral sintered flux is mainly prepared from, by weight, 20-30% of magnesia, 10-20% offluorite, 20-40% of corundum, 5-15% of manganese ore, 5-15% of marble, 10-20% of quartz, 2-10% of rutile and 2-8% of alloying agent. According to the neutral sintered flux for submerged arc welding,the magnesia, corundum and fluorite can ensure the purity and mechanical properties of welding seam metal, the marble, rutile, quartz and manganese ore can improve the oxidation and welding process performance of the flux, the neutral flux prepared by all the raw materials in a formula integrates the advantages of alkaline fluxes and acid fluxes, and the neutral flux is excellent in comprehensiveperformance, good in welding process performance and high in low-temperature impact energy of welding seams.

Description

technical field [0001] The invention belongs to the field of flux for submerged arc welding, and in particular relates to a neutral sintering flux for submerged arc welding and a preparation method thereof. Background technique [0002] With the improvement of production efficiency, production process automation and mechanization requirements of enterprises, submerged arc welding has become one of the commonly used welding methods for low-alloy high-strength steel structures, especially in the welding process of large thick plates with long welds. The advantages are more obvious. [0003] The main function of flux in submerged arc welding is to create slag, to isolate the air from polluting the molten pool metal, to control the chemical composition of the weld metal, to ensure the mechanical properties of the weld metal, and to prevent defects such as pores, cracks and slag inclusions. . At the same time, considering the needs of the welding process, it is also required th...

Claims

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Application Information

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IPC IPC(8): B23K35/362B23K35/40
CPCB23K35/3601B23K35/362B23K35/40
Inventor 邱然锋石红信张京海马恒波尹玉祥李久勇赵洋洋
Owner HENAN UNIV OF SCI & TECH