US 2026/0301997 A1Published application

Preparation method for bronze-process nb3sn superconducting wire, and superconducting wire

AssigneeXi'an Superconducting Wire Technologies Co., Ltd.

InventorsQiang GUO, Ke ZHANG, Bo WU, Shuaiwei JU, Tong CHEN, Yuxin XUE, Ruirui XIANG, Guo YAN, Xianghong LIU, Yong FENG, Jianfeng LI, Pingxiang ZHANG

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Abstract

Disclosed in the present application are a preparation method for a bronze-process Nb3Sn superconducting wire, and a superconducting wire. The preparation method comprises: placing a bronze rod into an Nb tube, placing the Nb tube into a bronze tube, and performing rotary swaging, drawing and annealing to prepare a bronze/Nb single core rod; bundling up hundreds of bronze/Nb single core rods in a hexagonal close-packed arrangement and then coating the exterior with a barrier layer, and then placing the bronze/Nb single core rods into a copper tube to form a final billet; and heating the final billet and then sequentially performing extruding, drawing and intermediate annealing thereon, so as to obtain a bronze-process Nb3Sn superconducting wire having ring-shaped filaments.

Claims10

Dependent claims

A preparation method for a bronze-process Nb3Sn superconducting wire, wherein, comprising:

placing a bronze rod (2) into an Nb tube (3), placing the Nb tube (3) into a bronze tube (1), and performing rotary swaging, drawing and annealing to prepare a bronze/Nb single core rod (6);
bundling up a plurality of bronze/Nb single core rods (6) in a hexagonal close-packed arrangement and then coating the exterior with a barrier layer (5), and then placing the plurality of bronze/Nb single core rods into a copper tube (4) to form a final billet;
and sequentially performing extruding, drawing and annealing on the final billet, to obtain a bronze-process Nb3Sn superconducting wire;
and
performing heat treatment on the bronze-process Nb3Sn superconducting wire to enable Sn and Nb in the bronze/Nb single core rod (6) to be diffused, to form a Nb3Sn phase.

2 more elements

Dependencies are inferred from the claim text.