Large-aperture high-field magnet Nb3Sn densely-wound coil heat treatment device
A heat treatment device and a technology of densely wound coils, applied in heat treatment furnaces, heat treatment equipment, heat treatment process control, etc., can solve the problems of superconducting performance degradation, contamination of superconducting wires, etc., to simplify manufacturing procedures, simplify processes, and improve heat transfer. The effect of efficiency
Active Publication Date: 2020-08-14
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology
[0007] In order to prevent the impurity gas in the furnace (O 2 、H 2 O, CH compounds) contaminate the superconducting wire, resulting in the degradation of superconducting properties
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[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0041] Such as figure 1 As shown, the present invention proposes a large-aperture high-field magnet Nb 3 Sn close-wound coil heat treatment device and method, described device comprises:
[0042] Fan stirring system, industrial muffle furnace, uniform temperature radiation protection screen 4, argon protection and detection system and carbon removal system, etc.;
[0043] The fan stirring system adopts a variable frequency motor 1, which is insta...
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Abstract
The invention discloses a large-aperture high-field magnet Nb3Sn densely-wound coil heat treatment device and method. The heat treatment device comprises a fan stirring system, an industrial muffle furnace, a uniform-temperature radiation protection screen, an argon protection and detection system and a carbon removal system. The heat treatment method comprises four stages, namely a heat treatmentpreparation stage, a gas replacement stage, a high-temperature phase change stage and a carbon removal stage. The heat treatment device has the advantages that the densely-wound coil is subjected toheat treatment in an argon protection mode, the manufacturing cost of the heat treatment device is greatly reduced, and foreign technical blockage is broken through. Due to the design of the uniform radiation protection screen, the heat treatment temperature uniformity of a superconducting coil is improved to be within + / -3 DEG C, meanwhile, the superconducting coil serves as a cavity of a carbonremoval reaction, and equipment required by a carbon removal process is simplified. According to the Nb3Sn densely-wound coil heat treatment and insulation decarbonization process method, the manufacturing procedure of the densely-wound coil is simplified. The system structure is simple, the reliability is high, and the operation and maintenance cost is low.
Description
technical field [0001] The present invention relates to Nb 3 Sn close-wound coil heat treatment technical field, especially a kind of large-aperture high-field magnet Nb 3 Sn closely wound coil argon protection heat treatment device and heat treatment method thereof. Background technique [0002] Superconducting technology is a high-tech of great economic and strategic significance in the 21st century. The breakthrough research on cutting-edge science and key technologies of high-field superconducting magnets will not only promote my country to occupy a leading position in the world in basic scientific research and advanced materials, but will also bring huge and even huge benefits to energy, medical care, transportation, and national security. Revolutionary impact. In order to realize the reliable application of superconducting technology in various fields, it is particularly critical to standardize the performance indicators of superconducting materials. In order to imp...
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IPC IPC(8): H01F41/04C21D9/00C21D1/767C22F1/18C22F1/02C21D11/00
CPCH01F41/048C21D9/0068C21D9/0043C21D1/767C22F1/18C22F1/02C21D11/00
Inventor 王维俊于敏薛圣泉秦经刚高鹏周超李建刚
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI