Good document by Nick Granger-Brown (thank you) – Good background information !
The use of noble gases, notably Helium, is becoming mainstream as a vital component within the HDD manufacturing process. Helium provides a medium within the HDD for improving flow induced vibration characteristics during certain stages of the HDD test process, however the application of Helium in HDD production has physical limitations and demands process equipment requirements for the introduction and collection of the Helium gas whilst the technical challenges of hermetically sealed drives with Helium remains largely unaddressed. This paper reviews reasoning behind the use of using Helium in HDD manufacturing and examines the issues surrounding the continued use of it going forward both technically in terms of the specific requirements that need to be built into the HDD design, and managing the gas within the HDD manufacturing process equipment.
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