Superconduction magnet fabrication process

Abstract

The invention provides a novel superconduction magnet fabrication process. The novel superconduction magnet fabrication process comprises the steps of (1) mixing a liquid-state polymer and a filler, and performing vacuum degassing to obtain a mixed liquid; (2) immersing a high-temperature resistant glass fiber fabric in the mixed liquid of the step (1); (3) winding the high-temperature resistant glass fiber fabric which is pre-immersed on a superconduction material to form a superconduction magnet; and (4) placing the superconduction magnet of the step (3) in inert gas, rising a temperature to150-250 DEG C, performing heat preservation for 2-5 hours, rising the temperature to 500-1,200 DEG C, and performing heat preservation for 10-450 hours to form a compact or porous ceramic-glass fiberfabric insulation layer. Preferably, the novel superconduction magnet fabrication process also comprises the steps of immersing the insulation layer in low-viscosity epoxy resin, and performing temperature rising and curing to fabricate the superconduction magnet. The insulation process method is simple, the formation of the insulation layer and the thermal treatment of a superconductor are synchronously performed, the insulation process of a superconduction magnet is simplified, the superconduction magnet manufacturing efficiency is improved, and meanwhile, the low-temperature thermal conductivity and the radiation-resistant performance of the insulation layer are improved.

Description

technical field [0001] The invention relates to the technical field of material engineering, in particular to a superconducting magnet insulation manufacturing process. Background technique [0002] Using Nb 3 Sn, Nb 3 When Al and Bi-based high-temperature superconducting materials are used to make high-field superconducting magnets, due to the high brittleness of these superconducting materials, they need to be wound first, and then undergo a long-term high-temperature heat treatment at 650°C or higher. Then, in order to avoid degrading the performance of superconducting materials, it is necessary to carefully wind glass fibers on superconducting materials, and then use organic resins such as epoxy resin as the resin matrix, and resin-pot the superconducting magnets through the vacuum pressure impregnation process. Heating and curing completes the insulation treatment of the magnet. This conventional magnet insulation process undoubtedly increases the time and cost of ma...

AI Technical Summary

Problems solved by technology

This conventional magnet insulation process undoubtedly increases the time and cost of magnet production, reduces production efficiency, and is not suitable for the production of special magnets

In addition, the insulating layer made of organic resin such as epoxy resin has low low-temperature thermal conductivity and high thermal expansion coefficient, which will generate large thermal stress during the operation of the magnet, which will affect the safe and reliable operation of the magnet. , especially in some large high-field magnets, the problems are more prominent and severe