A kind of processing method of superconducting tape

Abstract

The invention provides a method for processing a superconducting strip, comprising: S1, obtaining the magnetic field strength in a preset region of the superconducting strip under an AC state; S2, judging whether the magnetic field strength is higher than the preset magnetic field strength threshold, and if so, Then cut the superconducting tape in the preset area to obtain the processed superconducting tape, if not, do not act. According to the magnetic field strength of the superconducting strip in the alternating current state, the present invention cuts the superconducting strip in the preset area when the magnetic field intensity is relatively high, so as to locally reduce the alternating current of the superconducting strip in the preset area. Loss, because it is only partially cut, the flow capacity of the current in the non-cut area remains unchanged, avoiding a sharp drop in the overall flow capacity of the superconducting strip, and at the same time does not change the overall shape of the superconducting strip, and thus does not change the superconducting strip. The mechanical strength of the strip realizes the reduction of the AC loss caused by the magnetic field while avoiding the decline of the mechanical strength and the current flow capacity.

Description

technical field [0001] The invention relates to the technical field of superconducting materials, in particular to a processing method for superconducting strips. Background technique [0002] Critical current, critical temperature and critical magnetic field are the three parameters of superconducting materials that affect each other. Only when the three critical conditions are satisfied at the same time can the superconducting material be in the superconducting state, which is the most important factor affecting the application of superconducting. Among them, the critical current refers to the maximum current that can pass in the superconducting state, which is greatly affected by the magnetic field. When the magnetic field is relatively large, the critical current will decrease. [0003] In order to reduce the influence of the magnetic field, the current processing method for the superconducting strip is to completely cut the superconducting strip into filaments before ap...

AI Technical Summary

Problems solved by technology

However, after the superconducting tape is completely cut into filaments, its strength will be greatly reduced, and it will be easily damaged under large deformation. At the same time, the current-carrying capacity of filament-shaped superconducting materials will decrease

Therefore, it is necessary to propose a new processing method for superconducting strips, which can avoid the decline of mechanical strength and current flow capacity while reducing the AC loss caused by the magnetic field.

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