An Innovative Process for the Impregnation of Magnet Coils and Other Structures
The need to bond and encapsulate the conductor in many types of superconductive magnet is well understood. The choice of material for bonding may influence the performance of the coil and the technique used for its application. This paper considers the merits of three types of ‘bonding’ procedure and presents details of an innovative method for the vacuum impregnation of coils. The process has been developed and evaluated in an attempt to remove some of the uncertainties of the vacuum impregnation process that traditionally may be eliminated only with the use of sealed mould tools and high quality vacuum chambers. For large magnets or for mass production, this process may lead to a reduction in tooling and plant costs, together with reduced resin consumption and improved health and safety factors. The process has been developed in conjunction with a resin system that has been designed to exhibit excellent thermal shock characteristics and to minimise preparation time and post impregnation cleaning requirements.
KeywordsThermal Shock Resistance Resin System Resin Flow Vacuum Impregnation Rutherford Appleton Laboratory
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- 1.D Evans and J T Morgan “Aspects of the bonding and insulation of a large superconducting solenoid”. Cryogenics 1988, Vol 28, April.Google Scholar
- 2.G W Knight and D Evans “Evaluation of the structural integrity of superconducting magnet coils”. Cryogenics 1991, Vol 31, April.Google Scholar
- 3.D Evans and J T Morgan “Epoxide Resin for use at low temperature” - Non Metallic Materials and Composites at Low Temperature 2. Plenum Press 1982, pp 73–87.Google Scholar
- 4.D Evans, S J Robertson, S Walmsley and J Wilson, “Measurement of the permeability of carbon fibre/PEEK composites”. Cryogenic Materials 1988, Vol 2, Structural Materials, ICMC, pp 755–763.Google Scholar