A method for treating a superconducting tape

Abstract

The invention provides a processing method of a superconducting tape, comprising the following steps: S1, acquiring the magnetic field strength in a preset region of the superconducting tape under analternating current state; S2, determining whether that magnetic field strength is high than the preset magnetic field strength threshold, if so, cutting the superconducting tape in the preset regionto obtain the treated superconducting tape, and if not, not operaing. According to the magnetic field intensity of the superconducting tape in the alternating current state, the superconducting tapesare cut in the preset region when the magnetic field intensity is high, so as to locally reduce the AC loss of the superconducting tape in the preset region, As it is only a partial cut, the current carrying capacity of the superconducting tape is not changed in the uncut region, which avoids the sharp decrease of the overall current carrying capacity of the superconducting tape, and the overall shape of the superconducting tape is not changed, thereby the mechanical strength of the superconducting tape is not changed, and the decrease of the mechanical strength and the current carrying capacity is avoided while the AC loss caused by the magnetic field is reduced.

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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