Production of Austenitic Steel for the LHC Superconducting Dipole Magnets

The austenitic-steel collars are an important component of the LHC dipole magnets, operating at cryogenic temperature under high mechanical stress. The required steel, known as YUS 130S, has been specifically developed for this application by Nippon Steel Corporation (NSC), who was awarded a CERN co...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2006-06, Vol.16 (2), p.1773-1776
Main Authors: Bertinelli, F., Fudanoki, F., Komori, T., Peiro, G., Rossi, L.
Format: Article
Language:English
Subjects:
Applied sciences
CERN
Collars
Contracts
Cryogenic temperature
Cryogenics
Cyclic accelerators and storage rings
Electrical engineering. Electrical power engineering
Electrical machines
Electromagnets
Exact sciences and technology
Experimental methods and instrumentation for elementary-particle and nuclear physics
Iron and steel industry
Large Hadron Collider
Magnets
Manufacturing processes
Nuclear physics
Physics
Production
Pulp manufacturing
Regulation and control
Steel
Steel making
Steels
Stress
Structural materials for S.C. magnets
Superconducting magnets
Temperature
Various equipment and components
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Summary:The austenitic-steel collars are an important component of the LHC dipole magnets, operating at cryogenic temperature under high mechanical stress. The required steel, known as YUS 130S, has been specifically developed for this application by Nippon Steel Corporation (NSC), who was awarded a CERN contract in 1999 for the supply of 11 500 tonnes. In 2005-after six years of work-the contract is being successfully completed, with final production being ensured since October 2003 by Nippon Steel & Sumikin Stainless Steel Corporation (NSSC). The paper describes the steel properties, its manufacturing and quality control process, organization of production, logistics and contract follow-up. Extensive statistics have been collected relating to mechanical, physical and technological parameters. Specific attention is dedicated to measurements of magnetic permeability performed at cryogenic temperatures by CERN, the equipment used and statistical results. Reference is also made to the resulting precision of the fine-blanked collars
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2006.873244