Recent advances in magnetic liquid sealing

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Description

In this paper recent work in design and testing of two special magnetic liquid seals extending the state-of-the-art of ferrofluidic sealing is discussed. These custom seals are a moving belt edge seal and an exclusion seal. The first seal provides a hermetic barrier to solid particulates expected to be present in enclosed nuclear environments. The second seal is used on a magnetic disk drive spindle and reduces the particulate contaminants in the memory disk pack area by up to three orders of magnitude. In addition, bearing life in the spindle is found to be doubled due to reduction of operating ... continued below

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Pages: 35

Creation Information

Raj, K.; Stahl, P.; Bottenberg, W.; True, D.; Martis, G. & Zook, C. January 1, 1979.

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Description

In this paper recent work in design and testing of two special magnetic liquid seals extending the state-of-the-art of ferrofluidic sealing is discussed. These custom seals are a moving belt edge seal and an exclusion seal. The first seal provides a hermetic barrier to solid particulates expected to be present in enclosed nuclear environments. The second seal is used on a magnetic disk drive spindle and reduces the particulate contaminants in the memory disk pack area by up to three orders of magnitude. In addition, bearing life in the spindle is found to be doubled due to reduction of operating temperature. The fundamentals of magnetic fluid sealing are presented in terms of magnetic circuit design and physical properties of ferrofluids.

Physical Description

Pages: 35

Notes

Dep. NTIS, PC A03/MF A01.

Source

  • 26. annual design engineering show and conference, Chicago, IL, USA, 7 May 1979

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  • Report No.: HEDL-SA-1733-FP
  • Report No.: CONF-790593-1
  • Grant Number: EY-76-C-14-2170
  • Office of Scientific & Technical Information Report Number: 6157047
  • Archival Resource Key: ark:/67531/metadc1107591

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1979

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

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  • June 8, 2018, 8:18 p.m.

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Raj, K.; Stahl, P.; Bottenberg, W.; True, D.; Martis, G. & Zook, C. Recent advances in magnetic liquid sealing, article, January 1, 1979; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1107591/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.