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Submerged arc welding flux for welding SA-508Gr.3Cl.1 steel of third-generation nuclear power equipment and preparation method thereof

A sa-508gr.3cl.1, submerged arc flux technology, applied in welding equipment, welding equipment, arc welding equipment, etc., can solve the problems of poor welding performance and high cost of welding materials

Active Publication Date: 2015-04-29
ATLANTIC CHINA WELDING CONSUMABLES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Under the condition of lack of resources, clean energy such as nuclear power will be widely used. Nuclear power projects will be the focus of clean energy development in my country in the future. Development of submerged arc welding for materials such as SA-508Gr.3Cl.1 steel used in third-generation nuclear power equipment There will be a lot of room for development of welding materials. Currently, the welding materials used in nuclear power products have high cost of welding materials and poor welding performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] SiO 2 8kg, CaF 2 25kg, MgO 20kg, Al 2 o 3 30kg, CaO 10kg, MnO 2.5kg, BaO 0.5kg, CeO 2 1.0kg (sifted through a 40-mesh sieve before being placed in a vibrating sieve), pure powder of S 0.015kg and P 0.015kg is placed in a vibrating sieve, vibrating and sieved through a 30-mesh sieve, and then placed in a mixer Inside, stir and mix evenly, the stirring time is 15 minutes, then add 22kg of sodium water glass to mix and granulate, then heat to 300°C for low-temperature baking with natural gas, electric heating to 900°C for high-temperature sintering, and sieve. In this embodiment, alkali The degree is calculated to be 2.22.

Embodiment 2

[0085] SiO 2 15kg, CaF 2 20kg, MgO 30kg, Al 2 o 3 20kg, CaO 8kg, MnO 4.0kg, BaO 1.0kg, CeO2 2.0kg (sieved through a 40-mesh sieve before placing in the vibrating sieve), S 0.016kg, P 0.013kg of pure powder were placed in the vibrating sieve, passed through Vibrate and sieve through a 30-mesh screen, then place it in a mixer, stir and mix evenly for 15 minutes, add 24kg of sodium water glass to mix and granulate, then heat it with natural gas to 300°C for low-temperature baking, and electric heating to 900°C ℃ high temperature sintering, sieving, in this embodiment, the basicity is calculated as 2.32.

Embodiment 3

[0087] SiO 2 12kg, CaF 2 30kg, MgO 22kg, Al 2 o 3 22kg, CaO 6kg, MnO 2.0kg, BaO 0.3kg, CeO2 1.4kg (passed through a 40-mesh sieve before being placed in a vibrating sieve), pure powders of S 0.014kg and P 0.014kg were placed in a vibrating sieve, passed through Vibrate and sieve through a 30-mesh screen, then place it in a mixer, stir and mix evenly for 15 minutes, add 23kg of sodium water glass to mix and granulate, then heat to 300°C for low-temperature baking with natural gas, and electric heating to 900°C ℃ high temperature sintering, sieving, in this embodiment, the basicity is calculated as 2.31.

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Abstract

The invention discloses a submerged arc welding flux for welding SA-508Gr.3Cl.1 steel of third-generation nuclear power equipment and a preparation method thereof. The submerged arc welding flux comprises the following components in parts by weight: 8-15 parts of SiO2 (silicon dioxide), 20-30 parts of MgO (magnesium oxide), 20-30 parts of CaF2 (calcium fluoride), 20-30 parts of Al2O3 (aluminum oxide), 6-10 parts of CaO (calcium oxide), 2-4 parts of MnO2 (manganese dioxide), 0.3-1 parts of BaO (barium oxide), 1-2 parts of rare earth oxides, 0.014-0.016 part of S (sulfur), 0.013-0.015 part of P (phosphor), and 22-24 parts of water glass. Compared with the prior art, the submerged arc welding flux has the advantages that the welding technological property is excellent, the slag removal property is excellent, the forming appearance is attractive, and the mechanical property is more excellent.

Description

technical field [0001] The invention relates to a nuclear-grade welding material, in particular to a submerged arc flux for welding SA-508Gr.3Cl.1 steel in third-generation nuclear power equipment and a preparation method thereof. Background technique [0002] Under the condition of lack of resources, clean energy such as nuclear power will be widely used. Nuclear power projects will be the focus of clean energy development in my country in the future. Development of submerged arc welding for materials such as SA-508Gr.3Cl.1 steel used in third-generation nuclear power equipment There will be a lot of room for development of welding materials. Currently, the welding materials used in nuclear power products have high cost of welding materials and poor welding performance. Contents of the invention [0003] One of the purposes of the present invention is to provide a kind of submerged arc flux for welding SA-508Gr.3Cl.1 steel in the third generation nuclear power equipment, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/362B23K9/18
CPCB23K35/3601B23K35/362B23K35/40B23K2101/36B23K2103/04
Inventor 毛兴贵黄逸峰兰志刚张俊宝蒋勇景益余燕韦性竹
Owner ATLANTIC CHINA WELDING CONSUMABLES
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