Method for manufacturing large-size superconducting magnet laminated iron core

Abstract

The invention relates to a method for manufacturing a superconducting electromagnet used for charged particle transmission. A method for manufacturing a large-size superconducting magnet laminated iron core is mainly characterized by comprising the following steps of: stamping, detecting, end plate bonding, machining, half-iron core laminating, welding, and overall iron core assembling, wherein guide posts are arranged between an upper magnet and a lower magnet; the guide posts are respectively arranged on an upper iron core and a lower iron core; the guide posts are well matched with the upper and lower iron cores by debugging; the positions of the upper and lower guide posts are fixed; and during assembling, when the upper iron core is close to a superconducting coil Dewar box in a descending process, the guide posts start to work so as to prevent the Dewar box from being damaged because the upper iron core cannot be aligned. The method has the advantages that: a superconducting magnet of which the laminated magnet iron core is over 20T can be manufactured; and mechanical dimensions of the iron cores can be maintained by adopting a welding structure after the magnet iron cores are laminated. The magnetic field intensity and the magnetic field precision of a magnet are ensured and simultaneously a reasonable and practical manufacturing process is adopted; and the transformation from physical design to project implementation is finished in a plurality of processes such as stamping, laminating, roasting, detecting, and the like.

Description

Technical field: [0001] The invention relates to a manufacturing method of a superconducting electromagnet used for charged particle transmission, in particular to a manufacturing method of a laminated iron core of an accelerator superconducting magnet. Background technique: [0002] The particle transport electromagnet is the main equipment of the accelerator, which is mainly used for the deflection and extraction of charged particles in the vacuum cavity. The superconducting two-pole magnet has the characteristics of high magnetic field energy, saving electric loss (the coil resistance is zero in the superconducting state), and high magnetic field accuracy; in the specific design process, in order to reduce the eddy current loss in the magnet and improve the uniformity of the material For the purpose, the magnet core will be manufactured by lamination of punched sheets; such as the dipole magnet of the Binp electron-positron collider of the Beijing High Energy Institute, t...

AI Technical Summary

Problems solved by technology

[0005] The detection process of conventional punching uses a three-coordinate point measuring instrument to measure the accuracy of key points. For small-sized punching, due to the small natural warping of the punching, relatively accurate measurement results can be obtained; but for large-size punching The area of ​​the punching sheet is large, because the three-coordinate measuring instrument requires that the punching sheet must be raised to a certain height in order to meet the normal operation of the position sensor on the measuring probe, resulting in the bending of the punching sheet itself on the three-coordinate measuring instrument The deformation is far greater than the measurement accuracy of the instrument, and cannot truly reflect the accuracy of the punch

[0006] Due to the limitation of the structure, the magnetic components made of silicon steel sheets cannot be machined according to the needs like the magnetic components made of solid iron, which will lead to cracking of the silicon steel sheets laminated together, or because The action of the cutting force causes the film to curl, resulting in the scrapping of the part

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