Preparation method of Bi-2212 high-temperature superconductivity wire

The invention discloses a preparation method of Bi-2212 high-temperature superconductivity wire, comprising the following steps: firstly, filling superconductivity powder into a pipe; secondly, drawing to process and prepare a secondary compound; thirdly, after drawing the secondary compound, combining the secondary compound with a pure silver rod and a silver alloy rod, and then packing the compound into an AgMn alloy pipe so as to obtain a third compound; fourthly, drawing and processing the third compound into a wire; fifthly, carrying out semi-fused treatment on the wire, and obtaining the Bi-2212 high-temperature superconductivity wire after cooling a furnace. As for the preparation method, the process is simple, the design is reasonable, the manufacturing cost is low, and the application range is wide, and the method can be effectively applied to the preparation process of other relevant superconductivity wires. In the invention, one silver or silver alloy core wire is additionally arranged at the centr