Soldering flux for submerged arc horizontal position welding of steel containment, preparation method and welding method
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A technology of containment and horizontal welding, applied in arc welding equipment, welding medium, welding equipment, etc., can solve the problems of high flux cost and poor performance, and achieve excellent weld performance, excellent weld mechanical properties, and good welding process. sexual effect
Inactive Publication Date: 2014-04-23
ATLANTIC CHINA WELDING CONSUMABLES +1
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[0002] Under the current situation of massive application of clean energy such as nuclear power in my country, nuclear power projects will be the focus of clean energy development in my country in the future, and the development of submerged arc welding consumables for nuclear power steel containment SA738Gr.B steel and other materials will have a great impact There is still room for development. In nuclear power products, the existing flux has high cost and poor performance after welding.
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Embodiment 1
[0080] The component composition is: SiO 2 14kg, MgO 30kg, Al 2 O 3 20kg, ΣCaO 25kg, MnO 0.5 kg, Na 2 O 0.5 kg, K 2 O 0.2kg, TiO 2 0.5kg, Fe 2 O 3 1.0kg, S 0.020kg and P 0.026kg of pure powder are placed in the mixer, stirred and mixed evenly, then 18kg of sodium water glass is added to mix and granulate, then baked at 350℃, sintered at 750℃, and sieved , That is, a flux with an alkalinity of 2.3.
Embodiment 2
[0082] The component composition is: SiO 2 18kg, MgO 25kg, Al 2 O 3 24kg, ΣCaO 22kg, MnO 0.8kg, Na 2 O 1.0 kg, K 2 O 0.4kg, TiO 2 0.5 kg, Fe 2 O 3 0.6kg, S 0.020kg and P 0.026kg of pure powder are placed in the mixer, stirred and mixed uniformly, 16kg potassium water glass is added to mix and granulate, and then baked at 350℃, sintered at 750℃, and sieved. The flux with a basicity of 2.1 is obtained.
Embodiment 3
[0084] The component composition is: SiO 2 10kg, MgO 35kg, Al 2 O 3 18 kg, ΣCaO 20kg, MnO 1.2 kg, Na 2 O 1.1 kg, K 2 O 0.5kg, TiO 2 2.0 kg, Fe 2 O 3 1.5kg, S 0.018kg and P 0.028kg of pure powder are placed in the mixer, stirred and mixed uniformly, 17kg of potassium sodium water glass is added to mix and granulate, then baked at 350℃, sintered at 750℃, and sieved , That is, a flux with a flux alkalinity of 2.6.
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Abstract
The invention relates to a soldering flux and discloses a soldering flux for submerged arc horizontal position welding of a steel containment. The soldering flux for submerged arc horizontal position welding of the steel containment comprises the following components of, by mass, 6-18% of SiO2, 22-40% of MgO, 12-28% of Al2O3, 15-30% of sigma CaO, 0.5-4% of MnO, 0.5-2% of Na2O, 0.2-2% of K2O, 0<TiO2<=3%, 0<Fe2O3<=3.0%, 0<S<=0.030%, and 0<P<=0.030%. Compared with soldering fluxes in prior art, the submerged arc soldering flux for submerged arc horizontal position welding of the steel containment is special for welding the steel containment for nuclear power and has the advantages of good welding manufacturability, slag removal effects and mechanical properties and attractive shaping.
Description
Technical field [0001] The invention relates to a flux, in particular to a flux for submerged arc transverse welding of steel containment, a preparation method and a welding method using the flux in conjunction with a welding wire CHW-S62HRF. Background technique [0002] Under the current situation of large-scale application of clean energy such as nuclear power in my country, nuclear power projects will be the focus of my country’s future clean energy development. The development of submerged arc welding materials for nuclear power steel containment SA738Gr.B steel and other materials will be very large. In the current nuclear power products, the existing flux has high cost and poor performance after welding. Summary of the invention [0003] One of the objectives of the present invention is to provide a flux for submerged arc transverse welding of steel containment. The flux used for submerged arc transverse welding of steel containment is specially used for steel containment SA...
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