Improved Nb3Al precursor wire and preparation method thereof
A precursor and improved technology, which is applied in the field of improved Nb3Al precursor wire and its preparation, can solve the problems of low wire yield and high process equipment requirements
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Embodiment 1
[0025] An improved Nb 3 The preparation method of Al precursor wire rod structure, it specifically comprises the following steps:
[0026] (1) Fabrication of Nb-Al composite rods: After stacking 0.01 mm thick Nb foil and 0.003 mm thick Al foil without a center Nb rod, it is manually wound into a Nb-Al composite rod with a diameter of 8 mm, and the center position is minimized The gap, the width of both Nb foil and Al foil is 200 mm;
[0027] (2) Making hexagonal composite rods: put the above-mentioned Nb-Al composite rods with a diameter of 8 mm into a Ta tube with an outer diameter of 10 mm and a wall thickness of 1.0 mm to obtain a Ta / Nb-Al composite; The Ta / Nb-Al composite is processed into a hexagonal Ta / Nb-Al single mandrel with a distance across sides of 3.0 mm;
[0028] (3) Making multi-core composite wires: 18 hexagonal Ta / Nb-Al single mandrels with a length of 2.0 m and 1 central Nb rod of the same size were packed into Cu with Ta barrier layer in the closest arrang...
Embodiment 2
[0031] An improved Nb 3 The preparation method of Al precursor wire rod structure specifically comprises the following steps:
[0032] (1) Fabrication of Nb-Al composite rod: After stacking 0.1 mm thick Nb foil and 0.03 mm thick Al foil without a center Nb rod, it is manually wound into a Nb-Al composite rod with a diameter of 8 mm, and the center position is minimized The gap, the width of both Nb foil and Al foil is 150 mm;
[0033](2) Making hexagonal composite rods: put the above-mentioned Nb-Al composite rods with a diameter of 8 mm into a Ta tube with an outer diameter of 10 mm and a wall thickness of 1.0 mm to obtain a Ta / Nb-Al composite; The manufacturing method processes the Ta / Nb-Al composite body into a hexagonal Ta / Nb-Al single mandrel with a distance across sides of 1.0 mm;
[0034] (3) Making multi-core composite wires: put 1000 hexagonal Ta / Nb-Al single mandrels with a length of 300 mm and 100 central Nb rods of the same size into the Ta-containing barrier lay...
Embodiment 3
[0037] An improved Nb 3 The preparation method of Al precursor wire rod specifically comprises the following steps:
[0038] (1) Fabrication of Nb-Al composite rods: After stacking 0.5 mm thick Nb foil and 0.15 mm thick Al foil without a center Nb rod, it is manually wound into a Nb-Al composite rod with a diameter of 8.0 mm, and the center position is minimized Void; the width of both Nb foil and Al foil is 300 mm;
[0039] (2) Fabrication of hexagonal composite rods: put the above-mentioned Nb-Al composite rods with a diameter of 8.0 mm into a Ta tube with an outer diameter of 10 mm and a wall thickness of 1.0 mm to form a Ta / Nb-Al composite; The manufacturing method is to process the Ta / Nb-Al composite body into a hexagonal Ta / Nb-Al single mandrel with a distance across sides of 10.0 mm;
[0040] (3) Making multi-core composite wires: put 10 Ta / Nb-Al single mandrels with a length of 3.0 m and hexagonal shape above and 9 central Nb rods of the same size into the Ta-contain...
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