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Low hygroscopicity submerged-arc welding sintered flux and preparation method thereof

A sintered flux, submerged arc welding technology, applied in arc welding equipment, welding equipment, welding equipment and other directions, can solve the problems of high hydrogen content in welds, insufficient low-temperature impact toughness of welds, easy to absorb moisture, etc., to reduce S content, improved distribution, low hygroscopicity

Inactive Publication Date: 2019-03-12
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention overcomes the defects of high hydrogen content in the weld seam and insufficient low-temperature impact toughness of the weld seam due to the easy moisture absorption of the sintered flux in the prior art, and provides a solution by utilizing the adjustment of the flux slag system, the transition mode of the weld seam alloy and the improvement of the manufacturing process. A kind of submerged arc welding sintering flux with low moisture absorption and excellent low temperature impact toughness and its preparation method

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  • Low hygroscopicity submerged-arc welding sintered flux and preparation method thereof

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Embodiment 1

[0036] Preparation method of low moisture absorption submerged arc sintering flux:

[0037] 1) Ingredients: According to the formula, weigh the required raw materials on the electronic balance and place them in the same container. The sum of the mass fractions of various ore powders is 100%; the sintering flux components are: 18-28% fluorite, aluminum alum Soil 17-20%, magnesia 20-28%, marble 28-30%, wollastonite 17-20%, rutile 3-6%, zircon sand 0.1-1.2%, polyvinyl alcohol 3-6%, chrome Green 1.2-3.6%, sodium carbonate 2-8%, metal nickel 3-6%, metal manganese 2-3%, rare earth oxide 1-2%; configure PVA adhesive: accurately weigh a certain quality of PVA powder, Slowly add it to 20°C cold water to dissolve, while stirring continuously to make it fully swell, disperse and release volatile substances in cold water, then raise the temperature to 95°C to accelerate dissolution, and keep it warm for 2~2.5 hours until the solution is no longer Containing tiny particles, the solution h...

Embodiment 2

[0047] Preparation method of low moisture absorption submerged arc sintering flux:

[0048] 1) Ingredients: According to the formula, weigh the required raw materials on the electronic balance and place them in the same container. The sum of the mass fractions of various ore powders is 100%; the sintering flux components are: fluorite 13-28%, aluminum alum Soil 17-18%, magnesia 20-28%, marble 28-30%, wollastonite 17-20%, rutile 3-6%, zircon sand 0.1-1.2%, polyvinyl alcohol 3-6%, chrome Green 1.2-3%, sodium carbonate 2-4%, metal nickel 3-6%, metal manganese 2-3%, rare earth oxide 1%; configure PVA adhesive: accurately weigh a certain quality of PVA powder, and put it Slowly add to 20°C cold water to dissolve, while stirring continuously to make it fully swell, disperse and escape volatile substances in cold water, then raise the temperature to 95°C to accelerate dissolution, and keep it warm for 2~2.5 hours until the solution no longer contains Tiny particles, the solution sol...

Embodiment 3

[0058] Preparation method of low moisture absorption submerged arc sintering flux:

[0059] 1) Ingredients: According to the formula, weigh the required raw materials on the electronic balance and place them in the same container. The sum of the mass fractions of various ore powders is 100%; the sintering flux components are: fluorite 13-26%, aluminum alum Soil 17-18%, magnesia 20-28%, marble 28-45%, wollastonite 17-19%, rutile 3-5%, zircon sand 0.1-1.2%, polyvinyl alcohol 3-6%, chrome Green 1.2-3%, sodium carbonate 2-4%, metal nickel 3-4%, metal manganese 2-3%, rare earth oxide 1%; configure PVA adhesive: accurately weigh a certain quality of PVA powder, and put it Slowly add to 20°C cold water to dissolve, while stirring continuously to make it fully swell, disperse and escape volatile substances in cold water, then raise the temperature to 95°C to accelerate dissolution, and keep it warm for 2~2.5 hours until the solution no longer contains Tiny particles, the solution sol...

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Abstract

The invention relates to low hygroscopicity submerged-arc welding sintered flux and a preparation method thereof. The low hygroscopicity submerged-arc welding sintered flux is prepared from the following components in percent by weight: 13-28% of fluorite, 16-20% of bauxite, 20-28% of magnesite, 28-45% of marbles, 17-20% of wollastonite, 3-6% of rutile, 0.1-1.2% of zircon sand, 3-6% of polyvinyl alcohol, 1.2-3.6% of chrome green, 2-8% of sodium carbonate, 3-6% of metal nickel, 2-5% of manganese metal and 1-3% of rare earth oxides. By adjusting a flux slag system and improving the manufacturingprocess by means of a weld joint alloy transitional mode, the invention provides the low hygroscopicity submerged-arc welding sintered flux which is excellent in low temperature impact toughness.

Description

technical field [0001] The invention relates to a sintered flux for submerged arc welding, in particular to a low moisture absorption sintered flux for submerged arc welding and a preparation method thereof. Background technique [0002] The performance of sintered flux is superior, and its research and application are becoming more and more extensive at present. However, due to its composition and structural characteristics, the strong moisture absorption tendency of sintered flux in the process of manufacturing, storage and use has been an important obstacle that has hindered its popularization and application for many years. factor. [0003] The moisture absorption resistance of sintered flux is far inferior to that of sintered flux. The manufacturing process of the two is different, so they have different microstructures and properties. Effect of moisture and flux. [0004] The sintered flux adopts the sintering process at a lower temperature. Although it is gradually ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/362B23K9/18
CPCB23K9/18B23K35/3602B23K35/362
Inventor 荆建军武静
Owner DONGGUAN UNIV OF TECH
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