A manufacturing method of boron-aluminum neutron-absorbing shielding cylinder for spent fuel storage and transportation container
A shielding cylinder and spent fuel technology, applied in the field of nuclear material manufacturing technology, can solve the problems that the manufacturing method cannot be found and the structural form has not been reported, and achieve the effect of large arc adjustment, wide application and diversified forms
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Embodiment 1
[0024] Single-layer shielding bobbin unit structure: 2mm thick B 4 Boron-aluminum arc plates with a C content of 31%, two arc plates with a diameter of 200mm and a height of 120mm, and the clips are H-shaped boron-aluminum materials with a thickness of 5mm and a length of 120mm. The curved rolling tool makes the H-shaped clip fasten the two arc plates.
[0025] Three-layer shielding bobbin unit structure: 2mm thick B 4 Boron-aluminum arc plates with a C content of 31%. The diameters of the arc plates are 450mm, 454mm, and 458mm, and the heights are 200mm. Three pieces are assembled to form a multi-layer shielding tube. The schematic diagram of its structure is shown in figure 2 .
Embodiment 2
[0027] Manufacture of single-layer shielding tube arc plate: 2mm thick B 4 For boron-aluminum plates with a C content of 31%, cut out two rectangular plates of 314mm×120mm, put them in a heating furnace at 300°C to 550°C, and hold the heat for ≥5 minutes; send the plate in a hot state into the plate rolling machine, The curved plate is rolled according to the radian of the preset coil diameter of 200mm, and then the made curved plate is placed in a finishing steel mold at 300°C to 550°C for finishing, and the finishing time is ≥5min; after finishing, it is cut and cut. Open the finishing mold and take out the boron aluminum arc plate. The two arc plates are butted and assembled into a single-layer shielded cartridge unit.
[0028] Three-layer shielding cylinder arc plate manufacturing: 2mm thick B 4 For boron-aluminum plates with a C content of 31%, cut out 3 rectangular plates of 500mm×200mm, put them in a heating furnace at 300°C to 550°C, and hold the heat for ≥5 minutes;...
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