A large-aperture high-field magnet nb3sn densely wound coil heat treatment device
A technology of densely wound coils and large apertures, applied in heat treatment furnaces, heat treatment equipment, heat treatment process control, etc., can solve problems such as contamination of superconducting wires and degradation of superconducting properties, simplify manufacturing procedures, simplify equipment, and break through technological blockades Effect
Active Publication Date: 2022-05-10
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 Nb 3 Sn densely wound coil heat treatment device and method, the heat treatment device includes: fan stirring system, industrial muffle furnace, uniform temperature radiation protection screen, argon gas protection and detection system and carbon removal system. Its heat treatment method includes four stages, namely: heat treatment preparation stage, gas replacement stage, high temperature phase change stage and carbon removal stage. The invention has the advantage that heat treatment is carried out on the densely wound coil in the way of argon protection, which greatly reduces the cost of the heat treatment device and breaks through the technical blockade abroad. The design of the uniform radiation protection screen improves the temperature uniformity of the heat treatment of the superconducting coil to within ±3°C, and at the same time serves as a chamber for the carbon removal reaction, which simplifies the equipment required for the carbon removal process. Proposed Nb 3 The Sn densely wound coil heat treatment and insulation decarburization process simplifies the manufacturing procedure of the densely wound coil. The system has simple structure, high reliability, and low operation and maintenance costs.
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